/* ==========================================================================
   EAD 2060 — Cyber Prism UI
   Futurista · Glassmorphism · Neon (lime/magenta/violeta) · sem azul
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  /* Neon primário (verde-lima).
     O --neon fica VIVO para botões, barras e gradientes. O --neon-texto é a
     versão escura, porque verde claro sobre branco fica ilegível. */
  --neon: #b8ff4d;
  --neon-texto: #153502;
  --neon-forte: #9be12e;
  --neon-escuro: #6fae1a;

  /* Neon secundário (magenta) */
  --magenta: #ff2e97;
  --magenta-texto: #761440;
  --magenta-forte: #d61f7a;
  --magenta-suave: rgba(255, 46, 151, 0.14);
  /* Fundo de botao/badge com TEXTO BRANCO: L<=0.10 = 7:1. */
  --magenta-fundo: #9d174d;

  /* Neon terciário (violeta) */
  --violeta: #a78bfa;
  --violeta-texto: #3b0764;
  --violeta-forte: #7c3aed;
  --violeta-fundo: #5b21b6;

  /* Âmbar (atenção) */
  --ambar: #ffb300;
  --ambar-texto: #78350f;
  --ambar-suave: rgba(255, 179, 0, 0.16);

  /* Semânticas (ajustadas para contraste no BRANCO) */
  --ok: #05391a;
  --ok-suave: rgba(5, 57, 26, 0.1);
  --erro: #6b0f2c;
  --erro-suave: rgba(107, 15, 44, 0.1);
  --info: #043c5e;
  --info-suave: rgba(4, 60, 94, 0.1);
  --alerta: #5c2a06;
  --alerta-suave: rgba(92, 42, 6, 0.1);

  /* Fundos — tema CLARO (fundo branco) */
  --bg-0: #ffffff;
  --bg-1: #f7f8fc;
  --bg-2: #eef1f8;
  --surface: rgba(15, 23, 42, 0.04);
  --surface-2: rgba(15, 23, 42, 0.07);
  --surface-3: rgba(15, 23, 42, 0.12);
  --borda: rgba(15, 23, 42, 0.13);
  --borda-forte: rgba(15, 23, 42, 0.24);
  --borda-neon: rgba(79, 138, 16, 0.4);

  /* Texto — escuro sobre branco */
  --texto: #101828;
  --texto-2: #242e3d;
  /* Contraste no branco: #667085 dá 4.6 (mínimo confortável de leitura). */
  --texto-3: #2a3444;

  /* Tipografia futurista */
  --fonte-display: "Orbitron", "Segoe UI", sans-serif;
  --fonte: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --fonte-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  /* Fonte de LEITURA — só para textos longos (estilo universitário).
     A Literata foi desenhada pela Google para leitura prolongada. */
  --fonte-leitura: "Literata", Georgia, "Times New Roman", serif;

  /* Raios e sombras */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-full: 999px;

  --sombra-1: 0 1px 0 rgba(15, 23, 42, 0.05);
  --sombra-2: 0 12px 32px -12px rgba(15, 23, 42, 0.16);
  --sombra-3: 0 24px 60px -18px rgba(15, 23, 42, 0.2);
  --glow-neon: 0 0 18px rgba(63, 125, 10, 0.16);
  --glow-magenta: 0 0 18px rgba(194, 24, 91, 0.14);
  --glow-violeta: 0 0 18px rgba(109, 40, 217, 0.16);

  /* Layout */
  --sidebar-w: 264px;
  --topbar-h: 66px;
  --transicao: 0.24s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}
* {
  margin: 0;
  padding: 0;
}

/* Landings e containers de tela cheia */
.landing {
  display: block;
  min-height: 100vh;
}

[hidden] {
  display: none !important;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: var(--fonte);
  background: var(--bg-0);
  color: var(--texto);
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  /* Grade cyber sutil de fundo */
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(167, 139, 250, 0.14), transparent),
    radial-gradient(ellipse 60% 40% at 90% 110%, rgba(255, 46, 151, 0.1), transparent),
    linear-gradient(rgba(184, 255, 77, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 255, 77, 0.028) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 42px 42px, 42px 42px;
  background-attachment: fixed;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}
button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}
a {
  color: var(--neon-texto);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}
ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--neon-texto);
  outline-offset: 2px;
  border-radius: 4px;
  box-shadow: var(--glow-neon);
}

.oculto-visual {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

::selection {
  background: var(--neon);
  color: #05050a;
}

/* Scrollbar futurista */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-1);
}
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--violeta), var(--magenta));
  border-radius: var(--r-full);
  border: 2px solid var(--bg-1);
}

/* ---------- 3. Tipografia ---------- */
h1,
h2,
h3,
h4 {
  font-family: var(--fonte-display);
  line-height: 1.25;
  font-weight: 700;
  color: var(--texto);
  letter-spacing: 0.02em;
}
h1 {
  font-size: clamp(1.5rem, 3.2vw, 2.3rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
h2 {
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
h3 {
  font-size: 1.02rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
h4 {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

p {
  color: var(--texto-2);
}
.lead {
  font-size: 1.08rem;
  color: var(--texto-2);
}
.texto-pequeno {
  font-size: 0.84rem;
  color: var(--texto-2);
}
.texto-centro {
  text-align: center;
}
.mono {
  font-family: var(--fonte-mono);
}

/* Título com gradiente neon */
.titulo-neon {
  background: linear-gradient(90deg, var(--neon-texto), var(--violeta-texto) 55%, var(--magenta-texto));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- 4. Layout ---------- */
.container {
  width: min(1200px, 100% - 2.5rem);
  margin-inline: auto;
}
.container-estreito {
  width: min(860px, 100% - 2.5rem);
  margin-inline: auto;
}
.grade {
  display: grid;
  gap: 1.25rem;
}
.grade-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}
.grade-3 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.grade-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.pilha {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.linha {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.linha-fim {
  justify-content: flex-end;
}
.espaco {
  flex: 1;
}

/* ---------- 5. App shell ---------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

.sidebar {
  background: rgba(247, 248, 252, 0.92);
  backdrop-filter: blur(18px);
  border-right: 1px solid var(--borda);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 210;
}

.sidebar .marca {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.35rem 0.5rem 0.9rem;
  border-bottom: 1px solid var(--borda);
}

.sidebar .marca .logo {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--fonte-display);
  font-weight: 800;
  font-size: 1.05rem;
  flex-shrink: 0;
  box-shadow: var(--glow-violeta);
  letter-spacing: 0.05em;
}

.sidebar .marca strong {
  font-family: var(--fonte-display);
  font-size: 1.02rem;
  display: block;
  line-height: 1.2;
  letter-spacing: 0.08em;
}
.sidebar .marca span {
  font-size: 0.66rem;
  color: var(--texto-3);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-family: var(--fonte-mono);
}

.menu-titulo {
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.24em;
  color: var(--texto-3);
  font-weight: 700;
  padding: 0 0.6rem 0.55rem;
  font-family: var(--fonte-mono);
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.menu a {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.66rem 0.75rem;
  border-radius: var(--r-md);
  color: var(--texto-2);
  font-weight: 500;
  font-size: 0.92rem;
  transition: var(--transicao);
  position: relative;
  border: 1px solid transparent;
}

.menu a:hover {
  background: var(--surface-2);
  color: var(--texto);
  text-decoration: none;
  border-color: var(--borda);
}

.menu a.ativo {
  background: linear-gradient(90deg, rgba(184, 255, 77, 0.14), rgba(184, 255, 77, 0.02));
  color: var(--neon-texto);
  border-color: var(--borda-neon);
  box-shadow: inset 0 0 24px rgba(184, 255, 77, 0.06);
}

.menu a.ativo::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 20%;
  height: 60%;
  width: 3px;
  border-radius: var(--r-full);
  background: var(--neon);
  box-shadow: var(--glow-neon);
}

.menu a .icone {
  font-size: 1.05rem;
  width: 1.35rem;
  text-align: center;
  flex-shrink: 0;
}

.menu a .badge-menu {
  margin-left: auto;
  background: var(--magenta);
  color: #fff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: var(--r-full);
  box-shadow: var(--glow-magenta);
}

.conteudo {
  padding: 1.75rem 1.75rem 3rem;
  min-width: 0;
}

/* ---------- 6. Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.6rem;
}
.topbar .saudacao h1 {
  font-size: 1.45rem;
}
.topbar .saudacao p {
  font-size: 0.9rem;
  color: var(--texto-3);
  font-family: var(--fonte-mono);
  letter-spacing: 0.04em;
}

.btn-icone {
  width: 42px;
  height: 42px;
  border-radius: var(--r-md);
  border: 1px solid var(--borda);
  background: var(--surface);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1.05rem;
  transition: var(--transicao);
  flex-shrink: 0;
  backdrop-filter: blur(8px);
}
.btn-icone:hover {
  background: var(--surface-3);
  border-color: var(--borda-forte);
}

/* ---------- 7. Cartões (glass) ---------- */
.cartao {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--borda);
  border-radius: var(--r-lg);
  padding: 1.4rem;
  box-shadow: var(--sombra-2);
  position: relative;
}

/* cantos de HUD */
.cartao::before,
.cartao::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid var(--borda-neon);
  border-radius: 2px;
  opacity: 0.55;
  pointer-events: none;
}
.cartao::before {
  top: 8px;
  left: 8px;
  border-right: none;
  border-bottom: none;
}
.cartao::after {
  bottom: 8px;
  right: 8px;
  border-left: none;
  border-top: none;
}

.cartao-compacto {
  padding: 1rem 1.1rem;
}

.cartao-cabecalho {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.cartao-cabecalho h2,
.cartao-cabecalho h3 {
  margin: 0;
}

.secao-titulo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.1rem;
}
.secao-titulo::before {
  content: "▍";
  color: var(--violeta-texto);
  font-size: 1.15rem;
  text-shadow: var(--glow-violeta);
}

/* Cartão de estatística */
.stat {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.stat .stat-icone {
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  border: 1px solid var(--borda);
  background: linear-gradient(135deg, rgba(184, 255, 77, 0.14), rgba(255, 46, 151, 0.1));
  box-shadow: inset 0 0 18px rgba(184, 255, 77, 0.08);
}
.stat .stat-valor {
  font-family: var(--fonte-display);
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--texto);
  letter-spacing: 0.03em;
}
.stat .stat-rotulo {
  font-size: 0.78rem;
  color: var(--texto-2);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-family: var(--fonte-mono);
}
.stat.verde .stat-icone {
  border-color: rgba(74, 222, 128, 0.5);
  background: rgba(74, 222, 128, 0.1);
  box-shadow: inset 0 0 18px rgba(74, 222, 128, 0.08);
}
.stat.magenta .stat-icone {
  border-color: rgba(255, 46, 151, 0.5);
  background: rgba(255, 46, 151, 0.1);
}
.stat.ambar .stat-icone {
  border-color: rgba(255, 179, 0, 0.5);
  background: rgba(255, 179, 0, 0.1);
}
.stat.violeta .stat-icone {
  border-color: rgba(167, 139, 250, 0.5);
  background: rgba(167, 139, 250, 0.1);
}

/* ---------- 8. Botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.68rem 1.25rem;
  border-radius: var(--r-md);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transicao);
  white-space: nowrap;
  text-decoration: none;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-family: var(--fonte-mono);
}
.btn:hover {
  text-decoration: none;
}
.btn:active {
  transform: translateY(1px) scale(0.99);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primario {
  background: linear-gradient(135deg, var(--neon), var(--neon-forte));
  color: #060a00;
  box-shadow: var(--glow-neon);
  border-color: rgba(184, 255, 77, 0.6);
}
.btn-primario:hover:not(:disabled) {
  box-shadow: 0 0 26px rgba(184, 255, 77, 0.55);
  filter: brightness(1.06);
}

.btn-accent {
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  color: #fff;
  box-shadow: var(--glow-violeta);
  border-color: rgba(167, 139, 250, 0.5);
}
.btn-accent:hover:not(:disabled) {
  box-shadow: var(--glow-magenta);
  filter: brightness(1.06);
}

.btn-sucesso {
  background: linear-gradient(135deg, var(--ok), #14532d);
  color: #fff;
  box-shadow: 0 0 16px rgba(74, 222, 128, 0.35);
}
.btn-perigo {
  background: linear-gradient(135deg, var(--erro), #991b1b);
  color: #fff;
  box-shadow: 0 0 16px rgba(251, 113, 133, 0.35);
}

.btn-secundario {
  background: var(--surface);
  color: var(--texto);
  border-color: var(--borda-forte);
  backdrop-filter: blur(8px);
}
.btn-secundario:hover:not(:disabled) {
  background: var(--surface-3);
  border-color: var(--neon-texto);
  color: var(--neon-texto);
}

.btn-fantasma {
  background: transparent;
  color: var(--texto-2);
}
.btn-fantasma:hover:not(:disabled) {
  background: var(--surface-2);
  color: var(--texto);
}

.btn-bloco {
  width: 100%;
}
.btn-pequeno {
  padding: 0.4rem 0.78rem;
  font-size: 0.74rem;
  border-radius: var(--r-sm);
  letter-spacing: 0.06em;
}
.btn-grande {
  padding: 0.95rem 1.8rem;
  font-size: 0.98rem;
  border-radius: var(--r-lg);
}

/* ---------- 9. Formulários ---------- */
.campo {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.campo label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--texto-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-family: var(--fonte-mono);
}
.campo .dica {
  font-size: 0.78rem;
  color: var(--texto-3);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="search"],
select,
textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--borda-forte);
  border-radius: var(--r-md);
  background: rgba(15, 23, 42, 0.04);
  color: var(--texto);
  transition: var(--transicao);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--neon-texto);
  box-shadow: 0 0 0 3px rgba(184, 255, 77, 0.15), var(--glow-neon);
}

input::placeholder,
textarea::placeholder {
  color: var(--texto-3);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

.campo-senha {
  position: relative;
}
.campo-senha .olho {
  position: absolute;
  right: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.05rem;
  padding: 0.3rem;
  border-radius: var(--r-sm);
  color: var(--texto-3);
}
.campo-senha .olho:hover {
  color: var(--texto);
  background: var(--surface-2);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--texto-2);
}
.checkbox input {
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--neon-texto);
  cursor: pointer;
}

/* ---------- 10. Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.65rem;
  border-radius: var(--r-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  background: var(--surface-2);
  color: var(--texto-2);
  border: 1px solid var(--borda);
  white-space: nowrap;
  text-transform: uppercase;
  font-family: var(--fonte-mono);
}

.badge-azul {
  background: var(--info-suave);
  color: var(--info);
  border-color: rgba(125, 211, 252, 0.35);
}
.badge-verde {
  background: var(--ok-suave);
  color: var(--ok);
  border-color: rgba(16, 101, 47, 0.35);
}
.badge-ambar {
  background: var(--ambar-suave);
  color: var(--ambar-texto);
  border-color: rgba(180, 83, 9, 0.35);
}
.badge-vermelho {
  background: var(--erro-suave);
  color: var(--erro);
  border-color: rgba(251, 113, 133, 0.35);
}
.badge-brand {
  background: rgba(184, 255, 77, 0.12);
  color: var(--neon-texto);
  border-color: var(--borda-neon);
}
.badge-violeta {
  background: rgba(167, 139, 250, 0.14);
  color: var(--violeta-texto);
  border-color: rgba(167, 139, 250, 0.4);
}
.badge-magenta {
  background: var(--magenta-suave);
  color: var(--magenta-texto);
  border-color: rgba(255, 46, 151, 0.4);
}

/* ---------- 11. Tabelas ---------- */
.tabela-envolve {
  overflow-x: auto;
  border-radius: var(--r-md);
  border: 1px solid var(--borda);
  background: var(--surface);
  backdrop-filter: blur(12px);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 560px;
}

thead th {
  background: rgba(15, 23, 42, 0.05);
  text-align: left;
  padding: 0.8rem 1rem;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--texto-2);
  font-weight: 700;
  border-bottom: 1px solid var(--borda);
  white-space: nowrap;
  font-family: var(--fonte-mono);
}

tbody td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--borda);
  color: var(--texto-2);
  vertical-align: middle;
}
tbody tr:last-child td {
  border-bottom: none;
}
tbody tr:hover {
  background: rgba(15, 23, 42, 0.04);
}
tbody tr:hover td:first-child {
  box-shadow: inset 3px 0 0 var(--neon-texto);
}
td .forte,
th .forte {
  color: var(--texto);
  font-weight: 600;
}

/* ---------- 12. Avatar ---------- */
.avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--r-full);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: #fff;
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  flex-shrink: 0;
  letter-spacing: 0.02em;
  border: 1px solid rgba(15, 23, 42, 0.35);
  box-shadow: var(--glow-violeta);
  font-family: var(--fonte-display);
}
.avatar-grande {
  width: 64px;
  height: 64px;
  font-size: 1.4rem;
}
.avatar-pequeno {
  width: 32px;
  height: 32px;
  font-size: 0.8rem;
}

/* ---------- 13. Login ---------- */
.login-tela {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
}

.login-arte {
  position: relative;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.6rem;
  overflow: hidden;
  color: var(--texto);
  background:
    radial-gradient(ellipse 90% 60% at 20% 0%, rgba(167, 139, 250, 0.18), transparent),
    radial-gradient(ellipse 70% 50% at 100% 100%, rgba(255, 46, 151, 0.14), transparent),
    linear-gradient(145deg, #f2f4fc, #e6eaf6);
  border-right: 1px solid var(--borda);
}

/* rede cyber animada */
.login-arte::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(184, 255, 77, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 255, 77, 0.05) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, #000 40%, transparent 100%);
  animation: gradeMove 8s linear infinite;
}
@keyframes gradeMove {
  to {
    background-position: 34px 34px, 34px 34px;
  }
}

.login-arte .arte-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  width: fit-content;
  padding: 0.4rem 0.9rem;
  border-radius: var(--r-full);
  border: 1px solid var(--borda-neon);
  background: rgba(184, 255, 77, 0.08);
  color: var(--neon-texto);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-family: var(--fonte-mono);
  box-shadow: var(--glow-neon);
}

h1.arte-titulo {
  position: relative;
  font-size: clamp(1.9rem, 4vw, 3rem);
  text-transform: uppercase;
  line-height: 1.15;
  letter-spacing: 0.05em;
  background: linear-gradient(90deg, var(--texto), var(--violeta-texto) 60%, var(--neon-texto));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  max-width: 20ch;
}

.login-arte .arte-sub {
  position: relative;
  color: var(--texto-2);
  max-width: 46ch;
  font-size: 1.02rem;
}

.login-beneficios {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  position: relative;
}
.login-beneficio {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.93rem;
  color: var(--texto-2);
}
.login-beneficio .check {
  width: 24px;
  height: 24px;
  border-radius: var(--r-full);
  background: rgba(184, 255, 77, 0.16);
  border: 1px solid var(--borda-neon);
  color: var(--neon-texto);
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  flex-shrink: 0;
  box-shadow: var(--glow-neon);
}

.login-form-area {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1.5rem;
  position: relative;
}

.login-form {
  width: min(420px, 100%);
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.login-marca {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.4rem;
}
.login-marca .logo {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  color: #fff;
  display: grid;
  place-items: center;
  font-family: var(--fonte-display);
  font-weight: 800;
  font-size: 1.2rem;
  box-shadow: var(--glow-violeta);
}
.login-marca strong {
  font-family: var(--fonte-display);
  font-size: 1.15rem;
  display: block;
  letter-spacing: 0.06em;
}
.login-marca span {
  font-size: 0.68rem;
  color: var(--texto-3);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-family: var(--fonte-mono);
}

.abas-papel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  background: rgba(15, 23, 42, 0.04);
  padding: 0.35rem;
  border-radius: var(--r-md);
  border: 1px solid var(--borda);
}
.aba-papel {
  padding: 0.6rem;
  border: none;
  background: transparent;
  border-radius: var(--r-sm);
  font-weight: 600;
  font-size: 0.86rem;
  cursor: pointer;
  color: var(--texto-2);
  transition: var(--transicao);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--fonte-mono);
}
.aba-papel.ativa {
  background: linear-gradient(135deg, rgba(184, 255, 77, 0.2), rgba(167, 139, 250, 0.14));
  color: var(--neon-texto);
  border: 1px solid var(--borda-neon);
  box-shadow: var(--glow-neon);
  text-shadow: 0 0 12px rgba(184, 255, 77, 0.5);
}

/* ---------- Cadastro: escolha de papel (aluno x professor) ---------- */
.papel-escolha {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}
.papel-btn {
  border: 2px solid var(--borda);
  background: var(--bg-0);
  color: var(--texto-2);
  border-radius: var(--r-md);
  padding: 0.7rem 0.45rem;
  font-family: var(--fonte-mono);
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: var(--transicao);
}
.papel-btn:hover {
  border-color: var(--violeta-forte);
  color: var(--texto);
}
/* Ativo: branco sobre L<=0.10 = 7:1 (WCAG AAA) */
.papel-btn.ativo {
  border-color: var(--violeta-forte);
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  color: #fff;
}

.demo-contas {
  background: rgba(15, 23, 42, 0.04);
  border: 1px dashed var(--borda-forte);
  border-radius: var(--r-md);
  padding: 0.85rem 1rem;
  font-size: 0.8rem;
  color: var(--texto-2);
}
.demo-contas code {
  font-family: var(--fonte-mono);
  background: rgba(15, 23, 42, 0.07);
  border: 1px solid var(--borda);
  padding: 0.08rem 0.35rem;
  border-radius: 5px;
  font-size: 0.78rem;
  color: var(--neon-texto);
}
.demo-linha {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  padding: 0.28rem 0;
}
.demo-linha button {
  background: none;
  border: none;
  color: var(--magenta-texto);
  cursor: pointer;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--fonte-mono);
}
.demo-linha button:hover {
  text-decoration: underline;
}

/* ---------- 14. Alertas ---------- */
.alerta {
  padding: 0.85rem 1.05rem;
  border-radius: var(--r-md);
  font-size: 0.89rem;
  border: 1px solid;
  display: flex;
  gap: 0.65rem;
  align-items: flex-start;
  backdrop-filter: blur(10px);
}
.alerta-erro {
  background: var(--erro-suave);
  color: var(--erro);
  border-color: rgba(251, 113, 133, 0.4);
}
.alerta-ok {
  background: var(--ok-suave);
  color: var(--ok);
  border-color: rgba(74, 222, 128, 0.4);
}
.alerta-info {
  background: var(--info-suave);
  color: var(--info);
  border-color: rgba(125, 211, 252, 0.4);
}
.alerta-ambar {
  background: var(--alerta-suave);
  color: var(--alerta);
  border-color: rgba(253, 186, 116, 0.4);
}

/* ---------- 15. Progresso ---------- */
.progresso {
  height: 9px;
  border-radius: var(--r-full);
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid var(--borda);
  overflow: hidden;
}
.progresso > span {
  display: block;
  height: 100%;
  border-radius: var(--r-full);
  background: linear-gradient(90deg, var(--violeta), var(--magenta));
  box-shadow: var(--glow-magenta);
  transition: width 0.5s ease;
}
.progresso.verde > span {
  background: linear-gradient(90deg, #22c55e, var(--ok));
  box-shadow: 0 0 10px rgba(74, 222, 128, 0.5);
}
.progresso.ambar > span {
  background: linear-gradient(90deg, #f59e0b, var(--ambar));
}
.progresso.vermelho > span {
  background: linear-gradient(90deg, #ef4444, var(--erro));
}

/* ---------- 16. Cartão de matéria ---------- */
.card-materia {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--borda);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transicao);
  box-shadow: var(--sombra-2);
  position: relative;
}

.card-materia:hover {
  transform: translateY(-4px);
  border-color: var(--borda-neon);
  box-shadow: var(--sombra-3), var(--glow-neon);
}

.card-materia .capa {
  height: 92px;
  display: grid;
  place-items: center;
  font-size: 2.4rem;
  position: relative;
  background: linear-gradient(135deg, rgba(167, 139, 250, 0.22), rgba(255, 46, 151, 0.16));
  border-bottom: 1px solid var(--borda);
}

.card-materia .capa::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.5;
}

.card-materia .capa .tag {
  position: absolute;
  top: 0.65rem;
  left: 0.7rem;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--borda);
  color: var(--neon-texto);
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.22rem 0.6rem;
  border-radius: var(--r-full);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border: 1px solid var(--borda-neon);
  font-family: var(--fonte-mono);
}

.card-materia .capa .emoji {
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 0 14px rgba(167, 139, 250, 0.6));
}

.card-materia .corpo {
  padding: 1rem 1.15rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  flex: 1;
}
.card-materia .corpo h3 {
  font-size: 0.98rem;
}
.card-materia .meta {
  display: flex;
  gap: 1rem;
  font-size: 0.76rem;
  color: var(--texto-2);
  flex-wrap: wrap;
  font-family: var(--fonte-mono);
}
.card-materia .meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  letter-spacing: 0.04em;
}
.card-materia .acoes {
  margin-top: auto;
  display: flex;
  gap: 0.5rem;
  padding-top: 0.4rem;
}
.card-materia .acoes .btn {
  flex: 1;
}

/* ---------- 17. Lista de aulas ---------- */
.aula-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.1rem;
  border: 1px solid var(--borda);
  border-radius: var(--r-md);
  background: var(--surface);
  backdrop-filter: blur(12px);
  transition: var(--transicao);
}
.aula-item:hover {
  border-color: var(--borda-neon);
  box-shadow: var(--sombra-2), var(--glow-neon);
}

.aula-num {
  width: 42px;
  height: 42px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, rgba(184, 255, 77, 0.14), rgba(255, 46, 151, 0.1));
  color: var(--neon-texto);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-family: var(--fonte-display);
  font-size: 0.9rem;
  flex-shrink: 0;
  border: 1px solid var(--borda-neon);
}

.aula-info {
  min-width: 0;
  flex: 1;
}
.aula-info strong {
  display: block;
  font-size: 0.95rem;
  color: var(--texto);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.aula-info span {
  font-size: 0.78rem;
  color: var(--texto-2);
  font-family: var(--fonte-mono);
  letter-spacing: 0.04em;
}
.aula-acoes {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* ---------- 18. Modal ---------- */
.modal-fundo {
  position: fixed;
  inset: 0;
  background: rgba(3, 3, 8, 0.78);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  z-index: 300;
}
.modal-fundo.aberto {
  display: flex;
}
.modal {
  background: linear-gradient(160deg, #ffffff, #f5f7fd);
  border: 1px solid var(--borda-forte);
  border-radius: var(--r-lg);
  width: min(760px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--sombra-3), 0 0 40px rgba(167, 139, 250, 0.14);
  animation: modalEntra 0.24s ease;
}
.modal-largo {
  width: min(1000px, 100%);
}
@keyframes modalEntra {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.modal-cabecalho {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.4rem;
  border-bottom: 1px solid var(--borda);
  position: sticky;
  top: 0;
  background: rgba(247, 248, 252, 0.95);
  backdrop-filter: blur(12px);
  z-index: 1;
}
.modal-cabecalho h3 {
  font-size: 1.02rem;
}
.modal-corpo {
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}
.modal-rodape {
  padding: 1rem 1.4rem;
  border-top: 1px solid var(--borda);
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  flex-wrap: wrap;
  position: sticky;
  bottom: 0;
  background: rgba(247, 248, 252, 0.95);
  backdrop-filter: blur(12px);
}

.btn-fechar {
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid var(--borda);
  width: 34px;
  height: 34px;
  border-radius: var(--r-sm);
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1rem;
  color: var(--texto-2);
  flex-shrink: 0;
}
.btn-fechar:hover {
  background: var(--erro-suave);
  color: var(--erro);
  border-color: rgba(251, 113, 133, 0.4);
}

/* ---------- 19. Questões / Atividades ---------- */
.questao {
  border: 1px solid var(--borda);
  border-radius: var(--r-md);
  padding: 1.25rem;
  background: var(--surface);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.questao + .questao {
  margin-top: 1rem;
}
.questao-topo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.questao-enunciado {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--texto);
  font-weight: 400;
}
.questao-enunciado .destaque {
  font-weight: 700;
  color: var(--neon-texto);
  text-shadow: 0 0 14px rgba(184, 255, 77, 0.4);
}

.opcoes {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.opcao {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.85rem 1rem;
  border: 1.5px solid var(--borda);
  border-radius: var(--r-md);
  cursor: pointer;
  background: rgba(15, 23, 42, 0.03);
  transition: var(--transicao);
  font-size: 0.93rem;
  line-height: 1.5;
}
.opcao:hover {
  border-color: var(--borda-neon);
  background: rgba(184, 255, 77, 0.06);
}
.opcao input {
  display: none;
}
.opcao .letra {
  width: 28px;
  height: 28px;
  border-radius: var(--r-sm);
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid var(--borda);
  color: var(--texto-2);
  font-weight: 700;
  font-size: 0.8rem;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  transition: var(--transicao);
  font-family: var(--fonte-display);
}
.opcao.selecionada {
  border-color: var(--neon-texto);
  background: rgba(184, 255, 77, 0.1);
  box-shadow: inset 0 0 24px rgba(184, 255, 77, 0.05);
}
.opcao.selecionada .letra {
  background: var(--neon);
  color: #05050a;
  border-color: var(--neon-texto);
  box-shadow: var(--glow-neon);
}
.opcao.correta {
  border-color: var(--ok);
  background: var(--ok-suave);
}
.opcao.correta .letra {
  background: var(--ok);
  color: #04150a;
  border-color: var(--ok);
}
.opcao.incorreta {
  border-color: var(--erro);
  background: var(--erro-suave);
}
.opcao.incorreta .letra {
  background: var(--erro);
  color: #fff;
  border-color: var(--erro);
}
.opcao.bloqueada {
  cursor: default;
}
.opcao.bloqueada:hover {
  border-color: var(--borda);
  background: rgba(15, 23, 42, 0.03);
}

/* Gabarito escondido */
.gabarito-box {
  border: 1px solid rgba(16, 101, 47, 0.45);
  background: var(--ok-suave);
  border-radius: var(--r-md);
  padding: 1rem 1.1rem;
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  box-shadow: inset 0 0 24px rgba(74, 222, 128, 0.06);
}
.gabarito-box .g-icone {
  width: 34px;
  height: 34px;
  border-radius: var(--r-full);
  background: var(--ok);
  color: #04150a;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 0 14px rgba(74, 222, 128, 0.5);
}
.gabarito-box h4 {
  color: var(--ok);
  margin-bottom: 0.2rem;
}
.gabarito-box p {
  font-size: 0.9rem;
  color: var(--texto);
}

.bloqueado-aviso {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.85rem 1.05rem;
  border: 1px dashed var(--borda-forte);
  border-radius: var(--r-md);
  background: rgba(15, 23, 42, 0.03);
  color: var(--texto-2);
  font-size: 0.87rem;
}

/* ---------- 20. Gabarito escondido (blur + toggle) ---------- */
.escondido {
  position: relative;
  display: inline-block;
}
.escondido .conteudo-oculto {
  filter: blur(7px);
  user-select: none;
  transition: var(--transicao);
  pointer-events: none;
}
.escondido.revelado .conteudo-oculto {
  filter: none;
  user-select: auto;
  pointer-events: auto;
}
.escondido::after {
  content: "◉ CLIQUE PARA REVELAR";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--neon-texto);
  background: rgba(5, 5, 10, 0.72);
  backdrop-filter: blur(4px);
  border-radius: var(--r-sm);
  cursor: pointer;
  text-align: center;
  padding: 0.25rem;
  border: 1px dashed var(--borda-neon);
  font-family: var(--fonte-mono);
}
.escondido.revelado::after {
  content: "◉ OCULTO NOVAMENTE";
  background: rgba(5, 5, 10, 0.6);
  font-size: 0.66rem;
}

/* ---------- 21. Player / live ---------- */
.player {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  overflow: hidden;
  background: #060611;
  border: 1px solid var(--borda);
  box-shadow: var(--sombra-2);
}
.player iframe,
.player video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.player-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  color: rgba(15, 23, 42, 0.75);
  text-align: center;
  padding: 1.5rem;
  background:
    radial-gradient(ellipse 80% 50% at 50% 20%, rgba(167, 139, 250, 0.22), transparent),
    #0a0a16;
}
.player-placeholder .pp-icone {
  width: 66px;
  height: 66px;
  border-radius: var(--r-full);
  background: rgba(15, 23, 42, 0.08);
  border: 1px solid var(--borda);
  display: grid;
  place-items: center;
  font-size: 1.8rem;
  filter: drop-shadow(var(--glow-violeta));
}
.player-placeholder p {
  color: rgba(15, 23, 42, 0.72);
  font-size: 0.9rem;
  max-width: 40ch;
}
.player-placeholder .pp-titulo {
  font-family: var(--fonte-display);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--texto);
}

/* Link de reunião */
.reuniao-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--borda);
  border-radius: var(--r-md);
  background: var(--surface);
  backdrop-filter: blur(12px);
  flex-wrap: wrap;
  transition: var(--transicao);
}
.reuniao-link:hover {
  border-color: var(--borda-neon);
  box-shadow: var(--glow-neon);
}
.reuniao-link .r-icone {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  background: rgba(15, 23, 42, 0.06);
  border: 1px solid var(--borda);
  flex-shrink: 0;
}
.reuniao-link.zoom .r-icone {
  color: var(--violeta-texto);
  text-shadow: var(--glow-violeta);
}
.reuniao-link.meet .r-icone {
  color: var(--ok);
  text-shadow: 0 0 12px rgba(74, 222, 128, 0.6);
}
.reuniao-link .r-info {
  flex: 1;
  min-width: 160px;
}
.reuniao-link .r-info strong {
  display: block;
  font-size: 0.93rem;
  color: var(--texto);
}
.reuniao-link .r-info span {
  font-size: 0.78rem;
  color: var(--texto-2);
  font-family: var(--fonte-mono);
}
.reuniao-link .url-mon {
  font-family: var(--fonte-mono);
  font-size: 0.74rem;
  color: var(--texto-3);
  word-break: break-all;
}

.ao-vivo {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--erro);
  font-family: var(--fonte-mono);
  text-transform: uppercase;
}
.ao-vivo .ponto {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--erro);
  box-shadow: 0 0 10px var(--erro);
  animation: pulsar 1.4s infinite;
}
@keyframes pulsar {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.35;
    transform: scale(1.3);
  }
}

/* ---------- 22. Hero (landing) — capa de entrada ---------- */
.hero {
  position: relative;
  padding: 4.5rem 0 4.5rem;
  overflow: hidden;
  color: var(--texto);
  background:
    radial-gradient(ellipse 70% 55% at 15% 0%, rgba(167, 139, 250, 0.16), transparent),
    radial-gradient(ellipse 55% 45% at 100% 90%, rgba(255, 46, 151, 0.12), transparent),
    linear-gradient(180deg, #ffffff, #f5f7fd);
  border-bottom: 1px solid var(--borda);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(184, 255, 77, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 255, 77, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 0%, #000 25%, transparent 100%);
}

/* Orbes de cor flutuando atrás — dão profundidade à capa */
.hero-arte {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.5;
  animation: orb-flutuar 14s ease-in-out infinite;
}
.orb-neon {
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(184, 255, 77, 0.45), transparent 70%);
  top: -80px;
  right: 18%;
  animation-delay: 0s;
}
.orb-violeta {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(167, 139, 250, 0.4), transparent 70%);
  bottom: -140px;
  left: -60px;
  animation-delay: -4s;
}
.orb-magenta {
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255, 46, 151, 0.35), transparent 70%);
  top: 30%;
  right: -70px;
  animation-delay: -8s;
}
@keyframes orb-flutuar {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(18px, -26px, 0) scale(1.08);
  }
}

/* Grade: texto à esquerda, painel visual à direita */
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3.5rem;
  align-items: center;
}
.hero-texto h1 {
  color: var(--texto);
  font-size: clamp(2.1rem, 5.2vw, 3.6rem);
  margin-bottom: 1.1rem;
  max-width: 15ch;
  letter-spacing: 0.04em;
  line-height: 1.12;
}
/* No tema claro o gradiente usa as versões ESCURAS, senão some no branco. */
.hero h1 .glow-texto {
  background: linear-gradient(90deg, var(--neon-texto), var(--violeta-texto) 50%, var(--magenta-texto));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
}
.hero p.sub {
  font-size: clamp(1rem, 1.9vw, 1.15rem);
  color: var(--texto-2);
  max-width: 52ch;
  margin-bottom: 1.9rem;
  line-height: 1.7;
}
.hero p.sub strong {
  color: var(--texto);
}

.hero-acoes {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}
.hero-acoes .btn-secundario {
  background: rgba(15, 23, 42, 0.06);
  border-color: var(--borda-forte);
  color: var(--texto);
}
.hero-acoes .btn-secundario:hover {
  background: rgba(15, 23, 42, 0.12);
  border-color: var(--neon-texto);
  color: var(--neon-texto);
}

/* Microgarantias sob o botão — reduzem a inércia do visitante */
.hero-micro {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.4rem;
  margin: 0 0 2.4rem;
  padding: 0;
  list-style: none;
  font-size: 0.82rem;
  color: var(--texto-3);
}
.hero-micro strong {
  color: var(--neon-texto);
  font-weight: 700;
}

.hero-stats {
  display: flex;
  gap: 2.2rem;
  flex-wrap: wrap;
  padding-top: 1.8rem;
  border-top: 1px solid var(--borda);
}
.hero-stats .hs-item strong {
  display: block;
  font-family: var(--fonte-display);
  font-size: 1.85rem;
  line-height: 1.1;
  color: var(--neon-texto);
  text-shadow: var(--glow-neon);
  letter-spacing: 0.04em;
}
.hero-stats .hs-item span {
  font-size: 0.72rem;
  color: var(--texto-2);
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-family: var(--fonte-mono);
}

/* ================= PAINEL VISUAL (mockup do progresso) =================
   Mostra, sem precisar de foto, o que o aluno ganha: progresso, meta,
   sequência de estudos e a sensação de ir bem na prova. */
.hero-visao {
  position: relative;
  display: flex;
  justify-content: center;
}
.hv-painel {
  width: 100%;
  max-width: 400px;
  padding: 1.5rem;
  border-radius: 20px;
  background: linear-gradient(160deg, rgba(15, 23, 42, 0.09), rgba(15, 23, 42, 0.03));
  border: 1px solid var(--borda-forte);
  backdrop-filter: blur(20px);
  box-shadow:
    0 30px 60px rgba(15, 23, 42, 0.18),
    inset 0 1px 0 rgba(15, 23, 42, 0.12);
  animation: painel-sobrar 7s ease-in-out infinite;
}
@keyframes painel-sobrar {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}
.hv-topo {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.3rem;
}
.hv-rotulo {
  font-family: var(--fonte-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--texto-3);
  text-transform: uppercase;
}
.hv-chip {
  font-family: var(--fonte-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  padding: 0.24rem 0.6rem;
  border-radius: var(--r-full);
  background: rgba(184, 255, 77, 0.14);
  border: 1px solid rgba(63, 125, 10, 0.45);
  color: var(--neon-texto);
  font-weight: 700;
}
.hv-corpo {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  margin-bottom: 1.5rem;
}

/* Anel de progresso com conic-gradient (sem imagem, sem JS) */
.hv-anel {
  position: relative;
  flex-shrink: 0;
  width: 122px;
  height: 122px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  /* --pct (0..100%) vem do JS com o progresso REAL do aluno. */
  background: conic-gradient(
    var(--neon) 0deg var(--pct, 0%),
    rgba(15, 23, 42, 0.08) var(--pct, 0%) 360deg
  );
  box-shadow: 0 0 36px rgba(184, 255, 77, 0.28);
}
.hv-anel::before {
  content: "";
  position: absolute;
  inset: 11px;
  border-radius: 50%;
  background: #f2f4fb;
  border: 1px solid var(--borda);
}
.hv-anel-num {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: baseline;
  gap: 1px;
  font-family: var(--fonte-display);
}
.hv-anel-num strong {
  font-size: 2.1rem;
  color: var(--texto);
  line-height: 1;
}
.hv-anel-num span {
  font-size: 0.9rem;
  color: var(--neon-texto);
}
.hv-meta {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}
.hv-meta-rotulo {
  font-family: var(--fonte-mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  color: var(--texto-3);
}
.hv-meta strong {
  font-family: var(--fonte-display);
  font-size: 1.9rem;
  line-height: 1;
  background: linear-gradient(90deg, var(--violeta-texto), var(--magenta-texto));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hv-meta-txt {
  font-size: 0.76rem;
  color: var(--texto-2);
}

/* Barras por área */
.hv-linhas {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.3rem;
}
.hv-linha {
  display: grid;
  grid-template-columns: 90px 1fr 34px;
  align-items: center;
  gap: 0.6rem;
}
.hv-linha span {
  font-size: 0.74rem;
  color: var(--texto-2);
  white-space: nowrap;
}
.hv-linha b {
  display: block;
  height: 6px;
  border-radius: 99px;
  background: rgba(15, 23, 42, 0.08);
  position: relative;
  overflow: hidden;
}
.hv-linha b::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--p);
  border-radius: 99px;
  background: linear-gradient(90deg, var(--neon), var(--violeta));
}
.hv-linha em {
  font-style: normal;
  font-family: var(--fonte-mono);
  font-size: 0.68rem;
  color: var(--texto-3);
  text-align: right;
}

.hv-rodape {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--borda);
  font-size: 0.78rem;
  color: var(--texto-2);
}
.hv-ok {
  color: var(--neon-texto);
  font-weight: 700;
  text-shadow: 0 0 14px rgba(184, 255, 77, 0.5);
}

/* Cartões flutuantes ao redor do painel */
.hv-flutua {
  position: absolute;
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
  padding: 0.7rem 0.9rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--borda-forte);
  backdrop-filter: blur(14px);
  box-shadow: 0 14px 32px rgba(15, 23, 42, 0.16);
  animation: flutua 6s ease-in-out infinite;
}
.flutua-1 {
  top: 8%;
  left: -6%;
  animation-delay: -1s;
}
.flutua-2 {
  bottom: 10%;
  right: -4%;
  animation-delay: -3s;
}
.hv-f-num {
  font-family: var(--fonte-display);
  font-size: 1.2rem;
  color: var(--neon-texto);
  line-height: 1.1;
  text-shadow: var(--glow-neon);
}
.flutua-2 .hv-f-num {
  background: linear-gradient(90deg, var(--violeta-texto), var(--magenta-texto));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none;
}
.hv-f-txt {
  font-size: 0.66rem;
  color: var(--texto-2);
  white-space: nowrap;
  letter-spacing: 0.04em;
}
@keyframes flutua {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* ---------- Capa no celular ---------- */
@media (max-width: 900px) {
  .hero {
    padding: 3rem 0 3.25rem;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.75rem;
  }
  .hero-texto h1 {
    max-width: 100%;
  }
  .hero-visao {
    order: 2;
  }
  .hv-painel {
    max-width: 100%;
  }
  .hv-flutua {
    display: none; /* no celular o painel ocupa a largura toda */
  }
  .hero-stats {
    gap: 1.4rem 1.8rem;
  }
  .hero-stats .hs-item strong {
    font-size: 1.5rem;
  }
}

/* Respeita quem prefere menos movimento */
@media (prefers-reduced-motion: reduce) {
  .hero-orb,
  .hv-painel,
  .hv-flutua {
    animation: none;
  }
}

.secao {
  padding: 3.5rem 0;
}
.secao.alt {
  background: var(--surface);
  backdrop-filter: blur(12px);
  border-block: 1px solid var(--borda);
}

.secao-titulo-centro {
  text-align: center;
  margin-bottom: 2.5rem;
}
.secao-titulo-centro p {
  max-width: 60ch;
  margin-inline: auto;
}

/* ---------- 23. Topbar site ---------- */
.site-topbar {
  position: sticky;
  top: 0;
  z-index: 200;
  padding: 0.85rem 0;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--borda);
}
.site-topbar .container {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}
.site-topbar .marca {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--fonte-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--texto);
}
.site-topbar .marca .logo {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1rem;
  box-shadow: var(--glow-violeta);
}
.site-topbar nav {
  display: flex;
  gap: 1.4rem;
  margin-left: auto;
  flex-wrap: wrap;
}
.site-topbar nav a:not(.btn) {
  color: var(--texto-2);
  font-weight: 500;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-family: var(--fonte-mono);
}
.site-topbar nav a:not(.btn):hover {
  color: var(--neon-texto);
  text-decoration: none;
  text-shadow: var(--glow-neon);
}

/* ---------- 24. Footer ---------- */
footer.site-footer {
  background: #f2f4fa;
  color: var(--texto-2);
  padding: 2.75rem 0 1.5rem;
  margin-top: auto;
  border-top: 1px solid var(--borda);
  position: relative;
}
footer.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), var(--magenta), transparent);
}
/* h3 (antes h4 — h4 depois de h2 quebrava a ordem de headings) */
footer.site-footer h3,
footer.site-footer h4 {
  color: var(--texto);
  margin-bottom: 0.7rem;
  font-size: 0.82rem;
}
footer.site-footer a {
  color: var(--texto-2);
}
footer.site-footer a:hover {
  color: var(--neon-texto);
}
.footer-grade {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  font-size: 0.88rem;
}
.footer-base {
  border-top: 1px solid var(--borda);
  padding-top: 1.2rem;
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--texto-3);
}

/* ---------- 25. Filtro / busca ---------- */
.barra-filtro {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 1.5rem;
}
.barra-filtro .campo-busca {
  flex: 1;
  min-width: 220px;
  position: relative;
}
.barra-filtro .campo-busca input {
  padding-left: 2.6rem;
}
.barra-filtro .campo-busca .lupa {
  position: absolute;
  left: 0.9rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--texto-3);
  pointer-events: none;
}
.chips {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.chip {
  padding: 0.45rem 0.95rem;
  border-radius: var(--r-full);
  border: 1px solid var(--borda-forte);
  background: var(--surface);
  color: var(--texto-2);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transicao);
  font-family: var(--fonte-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.chip:hover {
  border-color: var(--neon-texto);
  color: var(--neon-texto);
}
.chip.ativa {
  background: linear-gradient(135deg, rgba(184, 255, 77, 0.2), rgba(167, 139, 250, 0.12));
  border-color: var(--borda-neon);
  color: var(--neon-texto);
  box-shadow: var(--glow-neon);
}

/* ---------- 26. Vazio / estados ---------- */
.vazio {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--texto-2);
}
.vazio .v-icone {
  font-size: 2.6rem;
  margin-bottom: 0.6rem;
  opacity: 0.6;
  filter: grayscale(0.4);
}
.vazio h3 {
  margin-bottom: 0.35rem;
}
.carregando {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  padding: 3rem;
  color: var(--texto-2);
}
.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(15, 23, 42, 0.08);
  border-top-color: var(--neon-texto);
  border-right-color: var(--magenta-texto);
  border-radius: 50%;
  animation: girar 0.8s linear infinite;
  box-shadow: var(--glow-violeta);
}
@keyframes girar {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- 27. Toast ---------- */
#toast-area {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  z-index: 500;
  max-width: min(380px, calc(100vw - 2.5rem));
}
.toast {
  background: #ffffff;
  color: var(--texto);
  border: 1px solid var(--borda-forte);
  border-left: 3px solid var(--neon-texto);
  border-radius: var(--r-md);
  padding: 0.85rem 1.05rem;
  box-shadow: var(--sombra-3);
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  animation: toastEntra 0.25s ease;
  font-size: 0.89rem;
}
.toast.sucesso {
  border-left-color: var(--ok);
}
.toast.erro {
  border-left-color: var(--erro);
}
.toast.atencao {
  border-left-color: var(--ambar);
}
.toast .t-msg strong {
  display: block;
  color: var(--texto);
  font-size: 0.9rem;
}
.toast .t-msg span {
  color: var(--texto-2);
  font-size: 0.85rem;
}
@keyframes toastEntra {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 28. Gráfico de notas ---------- */
.barras {
  display: flex;
  align-items: flex-end;
  gap: 0.55rem;
  height: 150px;
  padding: 0.5rem 0;
}
.barra-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  height: 100%;
  justify-content: flex-end;
}
.barra {
  width: 100%;
  max-width: 40px;
  background: linear-gradient(180deg, var(--violeta), var(--magenta));
  border-radius: 6px 6px 0 0;
  min-height: 4px;
  transition: height 0.5s ease;
  position: relative;
  box-shadow: 0 0 12px rgba(255, 46, 151, 0.3);
}
.barra .valor {
  position: absolute;
  top: -1.35rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--texto-2);
  white-space: nowrap;
  font-family: var(--fonte-mono);
}
.barra-label {
  font-size: 0.7rem;
  color: var(--texto-2);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  font-family: var(--fonte-mono);
  text-transform: uppercase;
}

/* ---------- 29. Texto ENEM ---------- */
.texto-enem {
  border: 1px solid var(--borda);
  border-radius: var(--r-md);
  background: rgba(15, 23, 42, 0.025);
  padding: 1.4rem 1.5rem;
  position: relative;
}
.texto-enem .te-rotulo {
  display: inline-block;
  padding: 0.28rem 0.8rem;
  border-radius: var(--r-full);
  background: rgba(167, 139, 250, 0.14);
  border: 1px solid rgba(109, 40, 217, 0.4);
  color: var(--violeta-texto);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--fonte-mono);
  margin-bottom: 1rem;
}
.texto-enem .te-titulo {
  font-family: var(--fonte-display);
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--texto);
  margin-bottom: 0.35rem;
}
.texto-enem .te-fonte {
  font-size: 0.74rem;
  color: var(--texto-3);
  font-family: var(--fonte-mono);
  margin-bottom: 1rem;
  letter-spacing: 0.06em;
}
/* --- Coluna de leitura: o cartão do texto vira um "documento" centralizado.
       Sem isso a linha fica com ~97 caracteres, cansativa para ler. --- */
.texto-enem {
  max-width: 42rem; /* ~672px: dá uns 68 caracteres por linha */
  margin-inline: auto;
}

.texto-enem .te-corpo {
  font-family: var(--fonte-leitura);
  font-size: 1.06rem; /* ~17px, confortável para texto longo */
  line-height: 1.82;
  color: var(--texto-2);
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
  text-rendering: optimizeLegibility;
}
.texto-enem .te-corpo p + p {
  margin-top: 0.95rem;
  text-indent: 1.5em; /* recuo de parágrafo, como em trabalho acadêmico */
}
.texto-enem .te-corpo p:first-child,
.texto-enem .te-corpo > *:first-child {
  text-indent: 0;
}
.texto-enem .te-corpo em {
  color: var(--texto);
  font-style: italic;
}
.texto-enem .te-corpo strong {
  color: var(--neon-texto);
  font-weight: 600;
}

/* --- Citação (blockquote) --- */
.texto-enem .te-corpo blockquote {
  margin: 1.4rem 0;
  padding: 0.95rem 1.25rem;
  border-left: 3px solid var(--violeta);
  background: var(--surface);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-style: italic;
  color: var(--texto);
}
.texto-enem .te-corpo blockquote p {
  text-indent: 0;
}

/* --- Tabelas (muito comuns em questão de ENEM: estatística, histórico...) --- */
.texto-enem .te-corpo table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-family: var(--fonte);
  font-size: 0.9rem;
  border: 1px solid var(--borda-forte);
}
.texto-enem .te-corpo thead th {
  background: var(--surface-2);
  color: var(--texto);
  font-weight: 600;
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 2px solid var(--borda-neon);
}
.texto-enem .te-corpo tbody td {
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--borda);
  color: var(--texto-2);
}
.texto-enem .te-corpo tbody tr:last-child td {
  border-bottom: 0;
}
.texto-enem .te-corpo tbody tr:nth-child(even) {
  background: var(--surface);
}

.texto-enem.impresso {
  box-shadow: inset 0 0 60px rgba(167, 139, 250, 0.05);
}

/* ---------- 30. Responsivo ---------- */
@media (max-width: 1024px) {
  .login-tela {
    grid-template-columns: 1fr;
  }
  .login-arte {
    padding: 2.25rem 1.5rem;
  }
  .login-arte h1.arte-titulo {
    font-size: 1.8rem;
  }
  .login-beneficios {
    display: none;
  }
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(280px, 84vw);
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: var(--sombra-3);
    border-right: none;
  }
  .sidebar.aberta {
    transform: none;
  }
  .conteudo {
    padding: 1.25rem 1.15rem 4rem;
  }
  .topbar .saudacao h1 {
    font-size: 1.2rem;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(1200px, 100% - 1.75rem);
  }
  .hero {
    padding: 3rem 0 2.75rem;
  }
  .hero-stats {
    gap: 1.5rem;
    margin-top: 2rem;
  }
  .hero-stats .hs-item strong {
    font-size: 1.5rem;
  }
  .cartao {
    padding: 1.1rem;
  }
  .abas-papel {
    grid-template-columns: 1fr;
  }
  .site-topbar nav {
    width: 100%;
    margin-left: 0;
    gap: 1rem;
    overflow-x: auto;
  }
  .aula-item {
    flex-wrap: wrap;
  }
  .aula-acoes {
    width: 100%;
  }
  .aula-acoes .btn {
    flex: 1;
  }
  .footer-base {
    flex-direction: column;
  }
  .texto-enem {
    padding: 1.1rem;
  }
}

/* Menu hambúrguer (mobile) */
#btn-sidebar {
  display: none;
}
@media (max-width: 900px) {
  #btn-sidebar {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 32. Professor Virtual (chat) ---------- */
#tutor-corpo {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.25rem 1.4rem;
}

.tutor-balao {
  max-width: 86%;
  padding: 0.85rem 1.1rem;
  border-radius: var(--r-md);
  font-size: 0.92rem;
  line-height: 1.65;
  animation: tutorEntra 0.22s ease;
}

.tutor-balao p + p {
  margin-top: 0.6rem;
}
.tutor-balao ul,
.tutor-balao ol {
  margin: 0.5rem 0 0.2rem;
  padding-left: 1.3rem;
  list-style: revert;
}
.tutor-balao li + li {
  margin-top: 0.3rem;
}
.tutor-balao strong {
  color: var(--texto);
}
.tutor-balao .tutor-tema {
  font-family: var(--fonte-mono);
  color: var(--neon-texto);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
}

/* bolha do professor */
.tutor-balao.tutor {
  align-self: flex-start;
  background: linear-gradient(150deg, rgba(167, 139, 250, 0.12), rgba(184, 255, 77, 0.06));
  border: 1px solid var(--borda-neon);
  border-left: 3px solid var(--neon-texto);
  border-bottom-left-radius: 4px;
  color: var(--texto);
  box-shadow: inset 0 0 26px rgba(184, 255, 77, 0.05);
}

/* bolha do aluno */
.tutor-balao.eu {
  align-self: flex-end;
  background: #f3eefb;
  border: 1px solid var(--borda-forte);
  border-right: 3px solid var(--magenta-texto);
  border-bottom-right-radius: 4px;
  color: var(--texto);
  box-shadow: var(--glow-magenta);
}

@keyframes tutorEntra {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* Botão flutuante do tutor */
#btn-tutor-float {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 290;
  width: 58px;
  height: 58px;
  border-radius: var(--r-full);
  border: 1px solid var(--borda-neon);
  background: linear-gradient(135deg, var(--violeta-fundo), var(--magenta-fundo));
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: var(--sombra-3), var(--glow-violeta);
  transition: var(--transicao);
}
#btn-tutor-float:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: var(--sombra-3), var(--glow-magenta);
}
#btn-tutor-float small {
  position: absolute;
  top: -2px;
  right: -2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: var(--glow-neon);
  border: 2px solid var(--bg-0);
}

/* ---------- 33. Impressão ---------- */
@media print {
  .sidebar,
  .topbar,
  .btn,
  .site-topbar,
  footer.site-footer,
  #toast-area,
  .ao-vivo,
  .barra-filtro {
    display: none !important;
  }
  body {
    background: #fff;
    color: #111;
  }
  .app {
    grid-template-columns: 1fr;
  }
}
/* ---------- 32. Estúdio de gravação e galeria ---------- */
.estudio-palco,
.gc-midia {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--r-md);
  overflow: hidden;
  background: #060611;
  border: 1px solid var(--borda);
  box-shadow: var(--sombra-2);
}
.estudio-palco video,
.gc-midia video,
.gc-midia iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #060611;
}
#estudo-timer {
  font-family: var(--fonte-mono);
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* cartão de gravação na galeria */
.grav-card {
  background: var(--surface);
  backdrop-filter: blur(16px);
  border: 1px solid var(--borda);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transicao);
  box-shadow: var(--sombra-2);
}
.grav-card:hover {
  border-color: var(--borda-neon);
  box-shadow: var(--sombra-3), var(--glow-neon);
}
.grav-card .gc-corpo {
  padding: 1rem 1.15rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  flex: 1;
}
.grav-card .gc-corpo h3 {
  font-size: 0.98rem;
  line-height: 1.4;
}
.grav-card .gc-meta {
  font-size: 0.78rem;
  color: var(--texto-2);
  font-family: var(--fonte-mono);
  letter-spacing: 0.03em;
}
.grav-card .gc-acoes {
  margin-top: auto;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-top: 0.3rem;
}
.gc-midia-vazia {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 1.5rem;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 50% at 50% 20%, rgba(167, 139, 250, 0.16), transparent),
    #0a0a16;
  color: var(--texto-2);
}
.gc-midia-vazia .v-icone {
  font-size: 2.4rem;
  opacity: 0.7;
}

/* =========================================================================
   24. VESTIBULARES — Fuvest / Unicamp (js/vestibulares.js)
   ========================================================================= */

/* Tabela ENEM x vestibular. O que é do ENEM aparece apagado; o que muda
   no vestibular fica destacado — o olho vai direto ao que interessa. */
.tab-comparativo {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--borda);
  border-radius: var(--r-md);
}
.tab-comparativo table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.92rem;
}
.tab-comparativo thead th {
  background: var(--surface-2);
  color: var(--texto);
  font-weight: 600;
  text-align: left;
  padding: 0.75rem 0.9rem;
  border-bottom: 2px solid var(--borda-neon);
  white-space: nowrap;
}
.tab-comparativo tbody td {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--borda);
  color: var(--texto-2);
  vertical-align: top;
  line-height: 1.55;
}
.tab-comparativo tbody tr:last-child td {
  border-bottom: 0;
}
.tab-comparativo tbody tr:nth-child(even) {
  background: var(--surface);
}
.tab-comparativo .tab-enem {
  color: var(--texto-3); /* o que NÃO muda — recuado de propósito */
}
.tab-comparativo .tab-vest {
  color: var(--texto);
  background: rgba(184, 255, 77, 0.05);
  border-left: 2px solid var(--borda-neon);
}
.tab-comparativo tbody tr:nth-child(even) .tab-vest {
  background: rgba(184, 255, 77, 0.08);
}

/* Lista "o que muda nos estudos" */
.lista-check {
  margin: 0;
  padding: 0;
  list-style: none;
}
.lista-check li {
  position: relative;
  padding-left: 1.9rem;
  margin-bottom: 0.85rem;
  color: var(--texto-2);
  line-height: 1.65;
}
.lista-check li:last-child {
  margin-bottom: 0;
}
.lista-check li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--neon-texto);
  font-weight: 700;
}

/* Alternativas das questões de vestibular */
.alternativas {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.alternativas li {
  margin: 0;
}
.alternativas label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--borda);
  border-radius: var(--r-sm, 8px);
  background: var(--surface);
  color: var(--texto-2);
  cursor: pointer;
  line-height: 1.55;
  transition: border-color 0.15s, background 0.15s;
}
.alternativas label:hover {
  border-color: var(--borda-neon);
  background: var(--surface-2);
  color: var(--texto);
}
.alternativas input[type="radio"] {
  margin-top: 0.28rem;
  accent-color: var(--neon-texto);
  flex-shrink: 0;
}
.alternativas input[type="radio"]:checked + strong,
.alternativas input[type="radio"]:checked ~ * {
  color: var(--neon-texto);
}
.alternativas label:has(input:checked) {
  border-color: var(--neon-texto);
  background: rgba(184, 255, 77, 0.07);
  color: var(--texto);
}