/* ============================================================
   Portal do Aluno — InfoStart
   Design System: dark navy var(--bg) + ciano var(--accent)
   Fontes: Poppins (display) + Nunito (body)
   ============================================================ */

/* As fontes (Poppins + Nunito) são carregadas pelo <link> do header.php — um @import aqui
   baixaria tudo de novo e atrasaria a página. */

/* ── Variáveis ────────────────────────────────────────────── */
:root {
  /* Cores — valores da paleta padrão "InfoStart". Configurações → Aparência
     troca tudo isto (o header.php imprime as variáveis da paleta escolhida). */
  --bg:          #0a0e1a;
  --bg-card:     #111827;
  --bg-card2:    #0e1421;
  --bg-code:     #080b14;
  --text:        #f0f4f8;
  --text-muted:  #818690;
  --text-dim:    #656b75;
  --accent:      #00c8e0;
  --accent2:     #009caf;
  --accent-hover: #26d0e5;
  --on-accent:   #0a0a0a;
  --on-danger:   #000000;
  --success:     #22c55e;
  --warning:     #f59e0b;
  --danger:      #f05252;
  --info:        #60a5fa;
  --accent-rgb:  0,200,224;
  --accent2-rgb: 0,156,175;
  --success-rgb: 34,197,94;
  --warning-rgb: 245,158,11;
  --danger-rgb:  240,82,82;
  --info-rgb:    96,165,250;
  --bg-rgb:      10,14,26;
  --tint-rgb:    255,255,255;
  --border:      rgba(0,200,224,.16);
  --border-soft: rgba(255,255,255,.08);
  --accent-glow: rgba(0,200,224,.2);
  --shadow:      0 4px 24px rgba(0,0,0,0.5);
  --shadow-card: 0 2px 16px rgba(0,0,0,0.35);
  --logo-bg:     transparent;
  --logo-pad:    0;
  color-scheme: dark;
  --radius:      12px;
  --radius-sm:   8px;
  --radius-lg:   18px;
  --nav-h:       64px;
  --sidebar-w:   240px;
  --font-body:   'Nunito', sans-serif;
  --font-display:'Poppins', sans-serif;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; }

input, textarea, select {
  font-family: var(--font-body);
  background: rgba(var(--tint-rgb),0.04);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: .65rem 1rem;
  width: 100%;
  font-size: .95rem;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
input::placeholder, textarea::placeholder { color: var(--text-dim); }
select option { background: var(--bg-card); color: var(--text); }

/* ============================================================
   LAYOUT: sidebar + main
   ============================================================ */
.portal-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-card2);
  border-right: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  transition: transform .3s;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 1.5rem 1.25rem 1rem;
  border-bottom: 1px solid var(--border-soft);
  flex-shrink: 0;
}
.sidebar-logo .brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--accent);
  letter-spacing: -.5px;
}
.sidebar-logo .brand span { color: var(--text); }
.sidebar-logo .brand-sub {
  font-size: .72rem;
  color: var(--text-muted);
  margin-top: .15rem;
  display: block;
  font-weight: 500;
}

.sidebar-nav { flex: 1; padding: 1rem 0; overflow-y: auto; }

.nav-section-label {
  font-size: .67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-dim);
  padding: .75rem 1.25rem .35rem;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .6rem 1.25rem;
  color: var(--text-muted);
  font-size: .9rem;
  font-weight: 600;
  border-radius: 0;
  transition: background .15s, color .15s;
  border-left: 3px solid transparent;
}
.sidebar-nav a .nav-icon { font-size: 1rem; width: 20px; text-align: center; }
.sidebar-nav a:hover { background: rgba(var(--accent-rgb),0.06); color: var(--text); }
.sidebar-nav a.active {
  background: rgba(var(--accent-rgb),0.1);
  color: var(--accent);
  border-left-color: var(--accent);
}

/* Links rápidos no footer da sidebar */
.sidebar-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-soft);
  flex-shrink: 0;
}

.sidebar-quick-link {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem .75rem;
  border-radius: var(--radius-sm);
  background: rgba(var(--tint-rgb),.04);
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
  font-size: .8rem;
  font-weight: 600;
  transition: all .2s;
  text-decoration: none;
  margin-bottom: .3rem;
}
.sidebar-quick-link:hover,
.sidebar-quick-link.active {
  border-color: var(--accent);
  color: var(--accent);
}

/* Badge de não lidas no link de chat */
.chat-badge {
  margin-left: auto;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: .65rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: .65rem;
}
.user-avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .85rem;
  color: var(--on-accent);
  flex-shrink: 0;
}
.user-info .user-name { font-size: .85rem; font-weight: 700; color: var(--text); }
.user-info .user-role { font-size: .72rem; color: var(--text-muted); }

.sidebar-logout {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .75rem;
  border-radius: var(--radius-sm);
  background: rgba(var(--danger-rgb),.08);
  color: var(--danger) !important;
  font-size: .82rem;
  font-weight: 600;
  border: 1px solid rgba(var(--danger-rgb),.15);
  transition: background .2s !important;
  text-decoration: none;
}
.sidebar-logout:hover { background: rgba(var(--danger-rgb),.18) !important; color: var(--danger) !important; }

/* ── Main content ─────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;   /* deixa o conteúdo encolher: tabelas largas rolam dentro do quadro em vez de esticar a página */
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Topbar ───────────────────────────────────────────────── */
.topbar {
  height: var(--nav-h);
  background: rgba(var(--bg-rgb),.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  position: sticky;
  top: 0;
  z-index: 50;
  flex-shrink: 0;
}
.topbar-title { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--text); }
.topbar-actions { display: flex; align-items: center; gap: 1rem; }
.topbar-badge {
  background: rgba(var(--accent-rgb),.12);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: .75rem;
  font-weight: 700;
  padding: .25rem .7rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ── Page content ─────────────────────────────────────────── */
.page-content { padding: 2rem; flex: 1; max-width: 1200px; }

.page-header {
  margin-bottom: 2rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.page-header h1 {
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text);
  line-height: 1.1;
}
.page-header h1 span { color: var(--accent); }
.page-header p { color: var(--text-muted); font-size: .9rem; margin-top: .25rem; }

/* ============================================================
   CARDS & COMPONENTES
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.card-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}

/* ── Stats cards ──────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  position: relative;
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--accent);
  border-radius: 2px 0 0 2px;
}
.stat-card:hover { border-color: var(--border); transform: translateY(-2px); }
.stat-icon { font-size: 1.6rem; }
.stat-value { font-family: var(--font-display); font-size: 1.65rem; font-weight: 800; color: var(--text); line-height: 1; }
.stat-label { font-size: .78rem; color: var(--text-muted); font-weight: 600; margin-top: .2rem; }

/* ── Botões ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: .88rem;
  cursor: pointer;
  border: none;
  transition: all .2s;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
}
.btn-primary:hover { background: var(--accent-hover); color: var(--on-accent); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(var(--accent-rgb),.35); }

.btn-secondary {
  background: rgba(var(--tint-rgb),.06);
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-danger {
  background: rgba(var(--danger-rgb),.12);
  border: 1px solid rgba(var(--danger-rgb),.25);
  color: var(--danger);
}
.btn-danger:hover { background: rgba(var(--danger-rgb),.2); }

.btn-success {
  background: rgba(var(--success-rgb),.12);
  border: 1px solid rgba(var(--success-rgb),.25);
  color: var(--success);
}
.btn-success:hover { background: rgba(var(--success-rgb),.2); }

.btn-warning {
  background: rgba(var(--warning-rgb),.12);
  border: 1px solid rgba(var(--warning-rgb),.25);
  color: var(--warning);
}
.btn-warning:hover { background: rgba(var(--warning-rgb),.2); }

.btn-sm { padding: .38rem .85rem; font-size: .8rem; }
.btn-lg { padding: .8rem 1.75rem; font-size: 1rem; }

/* ── Formulários ──────────────────────────────────────────── */
.form-group { margin-bottom: 1.1rem; }
.form-label {
  display: block;
  font-size: .82rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: .4rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.form-hint { font-size: .78rem; color: var(--text-dim); margin-top: .35rem; }
.form-error { font-size: .78rem; color: var(--danger); margin-top: .35rem; }

/* Indicador de arquivo selecionado */
.file-hint {
  display: block;
  margin-top: .35rem;
  color: var(--accent);
  font-size: .78rem;
}

/* Abas */
.tabs {
  display: flex;
  gap: .25rem;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.tab-btn {
  padding: .55rem 1.1rem;
  font-size: .85rem;
  font-weight: 700;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all .2s;
  font-family: var(--font-body);
  margin-bottom: -1px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Tabelas ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border-soft); }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
thead tr { background: rgba(var(--tint-rgb),.03); }
th {
  padding: .75rem 1rem;
  text-align: left;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}
td { padding: .8rem 1rem; border-bottom: 1px solid rgba(var(--tint-rgb),.04); color: var(--text); vertical-align: middle; }
tbody tr { transition: background .15s; }
tbody tr:hover { background: rgba(var(--accent-rgb),.04); }
tbody tr:last-child td { border-bottom: none; }

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .2rem .65rem;
  border-radius: 20px;
  font-size: .73rem;
  font-weight: 700;
  letter-spacing: .03em;
  white-space: nowrap;
}
.badge-accent  { background: rgba(var(--accent-rgb),.12); color: var(--accent); border: 1px solid rgba(var(--accent-rgb),.2); }
.badge-success { background: rgba(var(--success-rgb),.12); color: var(--success); border: 1px solid rgba(var(--success-rgb),.2); }
.badge-warning { background: rgba(var(--warning-rgb),.12); color: var(--warning); border: 1px solid rgba(var(--warning-rgb),.2); }
.badge-danger  { background: rgba(var(--danger-rgb),.12); color: var(--danger); border: 1px solid rgba(var(--danger-rgb),.2); }
.badge-info    { background: rgba(var(--info-rgb),.12); color: var(--info); border: 1px solid rgba(var(--info-rgb),.2); }
.badge-muted   { background: rgba(var(--tint-rgb),.06); color: var(--text-muted); border: 1px solid var(--border-soft); }

/* ── Flash messages ───────────────────────────────────────── */
.flash-container { padding: 0 2rem; margin-top: 1rem; }
.alert {
  padding: .85rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .6rem;
  border: 1px solid;
}
.alert-success { background: rgba(var(--success-rgb),.1); border-color: rgba(var(--success-rgb),.25); color: var(--success); }
.alert-danger  { background: rgba(var(--danger-rgb),.1); border-color: rgba(var(--danger-rgb),.25); color: var(--danger); }
.alert-warning { background: rgba(var(--warning-rgb),.1); border-color: rgba(var(--warning-rgb),.25); color: var(--warning); }
.alert-info    { background: rgba(var(--info-rgb),.1); border-color: rgba(var(--info-rgb),.25); color: var(--info); }

/* ── Empty state ──────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
}
.empty-state .es-icon { font-size: 2.5rem; margin-bottom: .75rem; opacity: .5; display: block; }
.empty-state p { font-size: .9rem; }

/* ── Grid layouts ─────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem; }

/* ── Modal ────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 500px;
  position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
  animation: modal-in .2s ease;
}
@keyframes modal-in {
  from { opacity: 0; transform: scale(.95) translateY(-10px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.modal-title { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; }
.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.3rem;
  padding: .2rem;
  transition: color .2s;
}
.modal-close:hover { color: var(--text); }

/* ── Turma card (hero com capa) ───────────────────────────── */
.turma-hero {
  border-radius: var(--radius-lg);
  height: 200px;
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--bg-card), var(--accent2));
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
}
.turma-hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .4;
}
.turma-hero-info { position: relative; z-index: 2; }
.turma-hero-info h1 { font-family: var(--font-display); font-size: 1.8rem; font-weight: 900; color: #fff; }
.turma-hero-info p { color: rgba(var(--tint-rgb),.7); font-size: .9rem; }

/* ── Seletor de cor (form_turma) ──────────────────────────── */
.color-picker-row {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  margin-top: .5rem;
}
.color-dot {
  width: 30px; height: 30px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .15s, border-color .15s;
}
.color-dot:hover { transform: scale(1.15); }
.color-dot.selected { border-color: #fff; transform: scale(1.1); }

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
  min-height: 100vh;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}
.login-glow {
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--accent-rgb),.12) 0%, transparent 70%);
  top: -100px; left: -100px;
  pointer-events: none;
}
.login-glow2 {
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--accent2-rgb),.08) 0%, transparent 70%);
  bottom: -100px; right: -50px;
  pointer-events: none;
}
.login-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(var(--accent-rgb),.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--accent-rgb),.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}
.login-box {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 2;
  box-shadow: 0 20px 60px rgba(0,0,0,.5), 0 0 0 1px rgba(var(--accent-rgb),.06);
}
.login-brand {
  text-align: center;
  margin-bottom: 2rem;
}
.login-brand .brand-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--accent);
  letter-spacing: -1px;
}
.login-brand .brand-name span { color: var(--text); }
.login-brand p {
  font-size: .85rem;
  color: var(--text-muted);
  margin-top: .3rem;
}
.login-brand .portal-pill {
  display: inline-block;
  background: rgba(var(--accent-rgb),.1);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: .72rem;
  font-weight: 700;
  padding: .2rem .8rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .75rem;
}
.login-box h2 { font-family: var(--font-display); font-size: 1.3rem; font-weight: 800; margin-bottom: .3rem; }
.login-box .login-sub { font-size: .85rem; color: var(--text-muted); margin-bottom: 1.75rem; }

/* ============================================================
   CHAT
   ============================================================ */
.chat-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: calc(100vh - var(--nav-h));
  overflow: hidden;
}
.chat-sidebar {
  border-right: 1px solid var(--border-soft);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.chat-sidebar-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chat-grupos {
  flex: 1;
  overflow-y: auto;
}
.chat-grupo-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1.25rem;
  cursor: pointer;
  transition: background .15s;
  border-left: 3px solid transparent;
}
.chat-grupo-item:hover { background: rgba(var(--accent-rgb),.05); }
.chat-grupo-item.active {
  background: rgba(var(--accent-rgb),.1);
  border-left-color: var(--accent);
}
.chat-grupo-avatar {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .85rem; color: var(--on-accent);
  flex-shrink: 0;
}
.chat-grupo-info { flex: 1; min-width: 0; }
.chat-grupo-nome { font-size: .88rem; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-grupo-preview { font-size: .75rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: .1rem; }
.chat-grupo-badge {
  min-width: 20px; height: 20px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: .68rem;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
}
.chat-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.chat-header {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-shrink: 0;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
}
.msg {
  display: flex;
  gap: .75rem;
  max-width: 75%;
}
.msg.mine {
  flex-direction: row-reverse;
  align-self: flex-end;
}
.msg-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
  font-size: .72rem; font-weight: 700; color: var(--on-accent);
  flex-shrink: 0;
}
.msg-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: .65rem 1rem;
  max-width: 100%;
}
.msg.mine .msg-bubble {
  background: rgba(var(--accent-rgb),.12);
  border-color: rgba(var(--accent-rgb),.2);
}
.msg-autor { font-size: .72rem; font-weight: 700; color: var(--accent); margin-bottom: .2rem; }
.msg-texto { font-size: .88rem; line-height: 1.5; word-break: break-word; }
.msg-hora { font-size: .68rem; color: var(--text-dim); margin-top: .3rem; text-align: right; }
.chat-input-area {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-soft);
  display: flex;
  gap: .75rem;
  flex-shrink: 0;
}
.chat-input-area input { border-radius: 24px; }
.chat-typing {
  padding: 0 1.5rem .5rem;
  font-size: .75rem;
  color: var(--text-muted);
  min-height: 1.2rem;
}

/* ============================================================
   MOBILE
   ============================================================ */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-size: 1.3rem;
  padding: .25rem;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-left: 0;
  }
  .menu-toggle { display: flex; }
  .page-content { padding: 1.25rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .topbar { padding: 0 1.25rem; }
  .sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.6);
    z-index: 99;
  }
  .sidebar-overlay.open { display: block; }
  .chat-layout { grid-template-columns: 1fr; }
  .chat-sidebar { display: none; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .modal { padding: 1.5rem; }
}


/* ============================================================
   MELHORIAS DE UX — out/2026
   Ajustes globais que valem para todas as telas:
   foco visível, botões maiores no toque, celular sem rolagem
   lateral, confirmação dentro do botão, paginação e listas.
   ============================================================ */

/* ── Foco visível (teclado) ───────────────────────────────── */
a:focus-visible, button:focus-visible, .btn:focus-visible, summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}
.skip-link {
  position: absolute; left: -999px; top: .5rem; z-index: 300;
  background: var(--accent); color: var(--on-accent); font-weight: 800;
  padding: .5rem 1rem; border-radius: var(--radius-sm);
}
.skip-link:focus { left: .5rem; color: var(--on-accent); }

/* Botão desabilitado e "carregando" (ao enviar formulário) */
.btn:disabled, .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; transform: none !important; box-shadow: none !important; }
.btn.enviando { pointer-events: none; opacity: .75; }
.btn.enviando::after {
  content: ""; width: .85em; height: .85em; border-radius: 50%;
  border: 2px solid currentColor; border-right-color: transparent;
  animation: girar .7s linear infinite; margin-left: .15rem;
}
@keyframes girar { to { transform: rotate(360deg); } }

/* Logo: fundo escuro automático nas paletas claras */
.sidebar-logo img { background: var(--logo-bg); padding: var(--logo-pad); border-radius: 10px; }

/* Linhas de botões nunca são cortadas: quebram para a linha de baixo */
.btn-linha { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.page-content [style*="display:flex"]:has(> .btn, > a.btn, > form > .btn),
.page-content [style*="display: flex"]:has(> .btn, > a.btn, > form > .btn) { flex-wrap: wrap; }
.card-turma { display: flex; flex-direction: column; transition: transform .2s, border-color .2s; }
.card-turma:hover { transform: translateY(-3px); }
.card-turma .btn-linha { margin-top: auto; }

/* Cabeçalhos de card quebram a linha quando faltam espaço */
.card-header { flex-wrap: wrap; gap: .6rem; }
.card-header > * { min-width: 0; }

/* Tabelas: números alinhados e linhas mais fáceis de seguir */
td { font-variant-numeric: tabular-nums; }
.table-wrap { -webkit-overflow-scrolling: touch; }

/* Alertas: botão de fechar */
.alert { position: relative; padding-right: 2.6rem; }
.alert-fechar {
  position: absolute; right: .5rem; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: inherit; opacity: .6; cursor: pointer;
  font-size: 1.1rem; line-height: 1; padding: .35rem .5rem; border-radius: 6px;
}
.alert-fechar:hover { opacity: 1; background: rgba(var(--tint-rgb),.06); }
.alert.saindo { opacity: 0; transform: translateY(-4px); transition: opacity .3s, transform .3s; }

/* ── Confirmação dentro do próprio botão (sem modal) ───────── */
.confirma-box {
  display: inline-flex; align-items: center; gap: .35rem; flex-wrap: wrap;
  animation: confirma-in .15s ease;
}
@keyframes confirma-in { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: none; } }
.confirma-msg {
  flex-basis: 100%; font-size: .76rem; color: var(--warning); font-weight: 700;
  line-height: 1.35; max-width: 340px; white-space: normal; order: -1;
}
.btn-confirma {
  background: var(--danger) !important; color: var(--on-danger) !important; border: 1px solid var(--danger) !important;
}
.btn-confirma:hover { filter: brightness(.9); }
.btn-cancela-confirma { background: transparent; border: 1px solid var(--border-soft); color: var(--text-muted); }

/* ── Painel que abre e fecha (substitui modal) ─────────────── */
.painel-inline {
  display: none; margin: 1rem 0 1.25rem;
  background: var(--bg-card); border: 1px solid var(--border);
  border-left: 3px solid var(--accent); border-radius: var(--radius);
  padding: 1.25rem 1.5rem; box-shadow: var(--shadow-card);
  animation: confirma-in .18s ease;
}
.painel-inline.aberto { display: block; }
.painel-inline.perigo { border-left-color: var(--danger); }
.painel-inline .painel-topo { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.painel-inline .painel-titulo { font-family: var(--font-display); font-weight: 700; font-size: 1rem; }

/* ── Barra de ferramentas de lista (busca + filtros) ───────── */
.lista-ferr {
  display: flex; flex-wrap: wrap; gap: .6rem; align-items: center;
  margin-bottom: 1rem;
}
.lista-ferr .busca { flex: 1 1 260px; position: relative; }
.lista-ferr .busca input { padding-left: 2.2rem; }
.lista-ferr .busca::before {
  content: "🔎"; position: absolute; left: .75rem; top: 50%; transform: translateY(-50%);
  font-size: .85rem; opacity: .6; pointer-events: none;
}
.lista-ferr select { width: auto; flex: 0 1 auto; min-width: 140px; }
.lista-info { font-size: .8rem; color: var(--text-muted); margin-bottom: .6rem; }

/* Chips de filtro rápido */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1rem; }
.chip {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .35rem .8rem; border-radius: 99px; font-size: .8rem; font-weight: 700;
  border: 1px solid var(--border-soft); color: var(--text-muted); background: rgba(var(--tint-rgb),.02);
  cursor: pointer; font-family: var(--font-body); text-decoration: none;
}
.chip:hover { color: var(--text); border-color: var(--border); }
.chip.on { background: rgba(var(--accent-rgb),.12); border-color: rgba(var(--accent-rgb),.4); color: var(--accent); }
.chip .n { font-size: .7rem; padding: 0 .4rem; border-radius: 99px; background: rgba(var(--tint-rgb),.08); color: inherit; }

/* Paginação */
.paginacao { display: flex; flex-wrap: wrap; gap: .35rem; align-items: center; justify-content: center; margin-top: 1.1rem; }
.paginacao a, .paginacao span {
  min-width: 38px; height: 38px; padding: 0 .7rem; display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); border: 1px solid var(--border-soft); font-size: .85rem; font-weight: 700;
  color: var(--text-muted);
}
.paginacao a:hover { border-color: var(--accent); color: var(--accent); }
.paginacao .atual { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.paginacao .reti { border: none; min-width: 20px; padding: 0; }

/* Lista em linhas (alunos, matrículas) */
.linhas { display: flex; flex-direction: column; border: 1px solid var(--border-soft); border-radius: var(--radius); background: var(--bg-card); }
.linha {
  display: grid; grid-template-columns: 40px minmax(0, 1.6fr) minmax(0, 1.4fr) auto;
  gap: .9rem; align-items: center; padding: .75rem 1rem;
  border-bottom: 1px solid rgba(var(--tint-rgb),.04); transition: background .15s;
}
.linha:last-child { border-bottom: none; }
.linha:hover { background: rgba(var(--accent-rgb),.035); }
.linha .av {
  width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent2)); color: var(--on-accent);
  font-family: var(--font-display); font-weight: 800; font-size: .95rem;
}
.linha .av.inativo { background: var(--text-dim); color: var(--text); }
.linha .nome { font-weight: 800; color: var(--text); display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.linha .nome:hover { color: var(--accent); }
.linha .sub { font-size: .78rem; color: var(--text-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.linha .tags { display: flex; flex-wrap: wrap; gap: .3rem; }
.linha .acoes { display: flex; gap: .35rem; align-items: center; justify-content: flex-end; flex-wrap: wrap; }

/* Menu "mais ações" (⋯) sem modal: <details> */
.mais { position: relative; }
.mais > summary { list-style: none; }
.mais > summary::-webkit-details-marker { display: none; }
.mais-menu {
  position: absolute; right: 0; top: calc(100% + 4px); z-index: 20; min-width: 210px;
  background: var(--bg-card2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  box-shadow: var(--shadow); padding: .35rem; display: flex; flex-direction: column;
}
.mais-menu a, .mais-menu button {
  display: flex; align-items: center; gap: .5rem; width: 100%; text-align: left;
  padding: .55rem .7rem; border-radius: 6px; font-size: .84rem; font-weight: 600;
  color: var(--text); background: none; border: none; cursor: pointer; font-family: var(--font-body);
}
.mais-menu a:hover, .mais-menu button:hover { background: rgba(var(--accent-rgb),.08); color: var(--accent); }
.mais-menu .perigo { color: var(--danger); }
.mais-menu .perigo:hover { background: rgba(var(--danger-rgb),.1); color: var(--danger); }
.mais-menu form { margin: 0; }
.mais-menu hr { border: none; border-top: 1px solid var(--border-soft); margin: .3rem 0; }

/* Seções de painel (dashboards) */
.sec-titulo {
  display: flex; align-items: center; justify-content: space-between; gap: .75rem; flex-wrap: wrap;
  font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; margin: 1.75rem 0 .8rem;
}
.sec-titulo a { font-family: var(--font-body); font-size: .82rem; font-weight: 700; }
.atalhos { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: .75rem; margin-bottom: 1.5rem; }
.atalho {
  display: flex; align-items: center; gap: .7rem; padding: .85rem 1rem;
  background: var(--bg-card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  color: var(--text); font-weight: 700; font-size: .88rem; transition: border-color .2s, transform .2s;
}
.atalho:hover { border-color: var(--accent); color: var(--text); transform: translateY(-2px); }
.atalho .ic { font-size: 1.3rem; width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; border-radius: 10px; background: rgba(var(--accent-rgb),.1); flex-shrink: 0; }
.atalho small { display: block; font-weight: 600; color: var(--text-muted); font-size: .74rem; }
a.stat-card { color: inherit; }
a.stat-card:hover { color: inherit; }

/* Lista de pendências / avisos */
.pend { display: flex; flex-direction: column; gap: .5rem; }
.pend-item {
  display: flex; align-items: center; gap: .75rem; padding: .7rem .9rem;
  border-radius: var(--radius-sm); border: 1px solid var(--border-soft); background: rgba(var(--tint-rgb),.02);
  color: var(--text); font-size: .88rem;
}
a.pend-item:hover { border-color: var(--accent); color: var(--text); }
.pend-item .pi { font-size: 1.15rem; flex-shrink: 0; }
.pend-item .pt { flex: 1; min-width: 0; }
.pend-item .pt small { display: block; color: var(--text-muted); font-size: .76rem; }
.pend-item.danger { border-color: rgba(var(--danger-rgb),.3); background: rgba(var(--danger-rgb),.05); }
.pend-item.warning { border-color: rgba(var(--warning-rgb),.3); background: rgba(var(--warning-rgb),.05); }

/* ── Toque (celular/tablet): alvos de pelo menos ~40px ─────── */
@media (pointer: coarse) {
  .btn { min-height: 42px; }
  .btn-sm { min-height: 38px; padding: .4rem .85rem; }
  .tab-btn { min-height: 44px; }
  .sidebar-nav a { padding-top: .75rem; padding-bottom: .75rem; }
  input, select, textarea { font-size: 16px; }   /* evita o zoom automático do iPhone */
  .chip { min-height: 36px; }
}

/* ── Celular: nada passa da largura da tela ────────────────── */
@media (max-width: 768px) {
  html, body { overflow-x: hidden; }
  .page-header { align-items: flex-start; margin-bottom: 1.4rem; }
  .page-header h1 { font-size: 1.4rem; }
  .page-header > div:last-child:not(:first-child) { width: 100%; }
  .card { padding: 1.1rem; }
  .flash-container { padding: 0 1.25rem; }
  .topbar-title { font-size: .95rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 55vw; }

  /* Grades escritas direto no HTML (style="grid-template-columns: 280px 1fr" etc.)
     viram uma coluna só. Ficam de fora as grades pequenas de propósito
     (emojis, calendário, campo + botão). */
  .page-content [style*="grid-template-columns"]:not([style*="repeat(6"]):not([style*="repeat(7"]):not([style*="repeat(4"]):not([style*="34px"]):not([style*="auto-fit,minmax(1"]):not([style*="auto-fit, minmax(1"]):not(.manter-grade) {
    grid-template-columns: minmax(0, 1fr) !important;
  }
  /* Linhas de botões/etiquetas escritas no HTML quebram em vez de vazar */
  .page-content [style*="display:flex"]:not(.manter-linha),
  .page-content [style*="display: flex"]:not(.manter-linha) { flex-wrap: wrap; }
  .page-content [style*="white-space:nowrap"] { white-space: normal !important; }
  .page-content [style*="min-width:"] { min-width: 0 !important; }
  .page-content [style*="width:"]:not([style*="width:100%"]):not(.manter-largura) { max-width: 100%; }

  .linha { grid-template-columns: 40px minmax(0, 1fr); row-gap: .5rem; }
  .linha .tags, .linha .acoes { grid-column: 1 / -1; justify-content: flex-start; }
  .linha .acoes .btn { flex: 1 1 auto; justify-content: center; }
  .mais-menu { right: auto; left: 0; }
  .lista-ferr select { flex: 1 1 140px; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: .6rem; }
  .stat-card { padding: .9rem 1rem; gap: .6rem; }
  .stat-icon { font-size: 1.25rem; }
  .stat-value { font-size: 1.3rem; }
  .atalhos { grid-template-columns: 1fr 1fr; }
}

/* Movimento reduzido */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}