/* ═══════════════════════════════════════════════════════════════════════════
   Manuskrypton Gestão — Design System
   Identidade: Manuskrypton roxo + accent azul-gestão (#1e40af / #3b82f6)
   ═══════════════════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --purple-900: #1e1b4b;
  --purple-800: #312e81;
  --purple-700: #4338ca;
  --purple-600: #4f46e5;
  --purple-500: #6366f1;
  --purple-400: #818cf8;
  --purple-200: #c7d2fe;
  --purple-100: #e0e7ff;
  --purple-50:  #eef2ff;

  /* Accent gestão: azul-corporativo */
  --blue-900: #1e3a5f;
  --blue-700: #1d4ed8;
  --blue-600: #2563eb;
  --blue-500: #3b82f6;
  --blue-400: #60a5fa;
  --blue-100: #dbeafe;
  --blue-50:  #eff6ff;

  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;

  --red-600: #dc2626;
  --red-100: #fee2e2;
  --orange-500: #f97316;
  --orange-100: #ffedd5;
  --yellow-500: #eab308;
  --yellow-100: #fef9c3;
  --green-600: #16a34a;
  --green-100: #dcfce7;

  --sidebar-w: 240px;
  --header-h: 64px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.14);
  --transition: 0.2s ease;
}

html, body { height: 100%; font-family: 'Inter', system-ui, sans-serif; font-size: 14px; color: var(--slate-800); background: var(--slate-50); }

/* ── Layout screens ── */
.screen { width: 100vw; min-height: 100vh; }
.screen.hidden { display: none; }
.screen.active { display: flex; }

/* ═══ LOGIN ════════════════════════════════════════════════════════════════ */
#screen-login, #screen-auth, #screen-auth-pendente {
  align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--purple-900) 0%, var(--blue-900) 100%);
  position: relative; overflow: hidden;
}
.login-bg { position: absolute; inset: 0; pointer-events: none; }
.login-orb {
  position: absolute; border-radius: 50%;
  background: radial-gradient(circle, rgba(99,102,241,.35) 0%, transparent 70%);
  animation: orb-float 8s ease-in-out infinite;
}
.login-orb-1 { width: 600px; height: 600px; top: -200px; left: -200px; animation-delay: 0s; }
.login-orb-2 { width: 400px; height: 400px; bottom: -100px; right: -100px; animation-delay: -3s; }
.login-orb-3 { width: 300px; height: 300px; top: 40%; left: 55%; background: radial-gradient(circle, rgba(37,99,235,.3) 0%, transparent 70%); animation-delay: -6s; }

@keyframes orb-float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.login-card {
  position: relative; z-index: 2;
  background: rgba(255,255,255,.06); backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 24px; padding: 2rem;
  width: min(440px, 94vw);
  box-shadow: 0 32px 80px rgba(0,0,0,.4);
}

.login-logo { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .75rem; margin-bottom: 2.5rem; text-align: center; }
.logo-icon { width: 44px; height: 44px; flex-shrink: 0; }
.logo-icon svg { width: 100%; height: 100%; }
.logo-title { font-size: 1.1rem; font-weight: 800; color: #c40a0a; letter-spacing: -.02em; }
.logo-subtitle { font-size: .58rem; font-weight: 600; color: #ffffff; text-transform: uppercase; letter-spacing: .04em; line-height: 1.35; }

.login-heading { font-size: 1.6rem; font-weight: 800; color: #fff; margin-bottom: .5rem; }
.login-desc { font-size: .8rem; color: rgba(255,255,255,.6); margin-bottom: 1.75rem; line-height: 1.6; }

.field-group { margin-bottom: 1rem; }
.field-label { display: block; font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: rgba(255,255,255,.7); margin-bottom: .4rem; }
.field-input {
  width: 100%; padding: .7rem 1rem;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius-sm); color: #fff; font-size: .875rem;
  outline: none; transition: var(--transition);
}
.field-input::placeholder { color: rgba(255,255,255,.35); }
.field-input:focus { border-color: var(--blue-400); background: rgba(255,255,255,.12); box-shadow: 0 0 0 3px rgba(96,165,250,.2); }
.field-hint { font-size: .68rem; color: rgba(255,255,255,.4); margin-top: .35rem; }

.login-error { background: rgba(220,38,38,.2); border: 1px solid rgba(220,38,38,.4); color: #fca5a5; border-radius: var(--radius-sm); padding: .6rem .9rem; font-size: .8rem; margin-bottom: 1rem; }
.login-error.hidden { display: none; }

.btn-primary {
  display: flex; align-items: center; justify-content: center; gap: .5rem;
  width: 100%; padding: .8rem 1.5rem;
  background: linear-gradient(135deg, var(--blue-600), var(--purple-600));
  color: #fff; font-weight: 700; font-size: .875rem;
  border: none; border-radius: var(--radius-sm); cursor: pointer;
  transition: var(--transition); letter-spacing: .01em;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(37,99,235,.4); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.btn-login { margin-top: .5rem; }

.spinner { width: 18px; height: 18px; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.login-footer { display: flex; gap: .5rem; align-items: center; justify-content: center; margin-top: 1.5rem; font-size: .68rem; color: rgba(255,255,255,.3); }

/* ═══ MAIN LAYOUT ══════════════════════════════════════════════════════════ */
#screen-main { flex-direction: row; background: var(--slate-100); }

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w); min-height: 100vh; flex-shrink: 0;
  background: var(--purple-900); display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
  transition: transform .25s ease;
}
.sidebar-header { padding: 1.25rem 1rem; border-bottom: 1px solid rgba(255,255,255,.08); }
.sidebar-logo { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: .35rem; padding-bottom: 0.5rem; }
.logo-icon-sm { width: 32px; height: 32px; }
.sidebar-title { font-size: .85rem; font-weight: 800; color: #c40a0a; }
.sidebar-subtitle { font-size: .6rem; font-weight: 700; color: #ffffff; text-transform: uppercase; letter-spacing: .1em; }

.sidebar-nav { flex: 1; padding: .75rem .5rem; display: flex; flex-direction: column; gap: .25rem; }
.nav-item {
  display: flex; align-items: center; gap: .65rem; width: 100%;
  padding: .65rem .85rem; border-radius: var(--radius-sm);
  font-size: .8rem; font-weight: 600; color: rgba(255,255,255,.6);
  background: none; border: none; cursor: pointer; text-align: left;
  transition: var(--transition); position: relative;
}
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }
.nav-item:hover { background: rgba(255,255,255,.07); color: rgba(255,255,255,.9); }
.nav-item.active { background: linear-gradient(135deg, rgba(37,99,235,.25), rgba(79,70,229,.25)); color: #fff; font-weight: 700; }
.nav-item.active::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 3px; height: 60%; background: var(--blue-400); border-radius: 0 3px 3px 0; }

.badge-count, .badge-alert {
  margin-left: auto; font-size: .65rem; font-weight: 800;
  padding: .1rem .4rem; border-radius: 99px; line-height: 1.4;
}
.badge-count { background: rgba(255,255,255,.12); color: rgba(255,255,255,.7); }
.badge-alert { background: var(--red-600); color: #fff; }
.badge-alert.hidden, .badge-count.zero { display: none; }

.sidebar-bottom { padding: .75rem .5rem; border-top: 1px solid rgba(255,255,255,.08); display: flex; align-items: center; gap: .5rem; }
.user-info { display: flex; align-items: center; gap: .5rem; min-width: 0; flex: 1; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: linear-gradient(135deg, var(--blue-600), var(--purple-600)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 800; font-size: .8rem; flex-shrink: 0; }
.user-name { font-size: .75rem; font-weight: 700; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: .62rem; color: rgba(255,255,255,.4); }
.btn-logout { background: none; border: none; padding: .4rem; cursor: pointer; color: rgba(255,255,255,.4); border-radius: var(--radius-sm); transition: var(--transition); }
.btn-logout:hover { color: #fff; background: rgba(255,255,255,.1); }
.btn-logout svg { width: 16px; height: 16px; display: block; }

/* ── Main content ── */
.main-content { flex: 1; margin-left: var(--sidebar-w); display: flex; flex-direction: column; min-height: 100vh; }

.content-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(248,250,252,.95); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  height: var(--header-h); padding: 0 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.content-header-left { display: flex; align-items: center; gap: .75rem; min-width: 0; }
.content-title { font-size: 1.1rem; font-weight: 800; color: var(--slate-900); }
.content-subtitle { font-size: .72rem; color: var(--slate-500); white-space: nowrap; }
.content-header-right { display: flex; align-items: center; gap: .75rem; flex-shrink: 0; }
.last-update { font-size: .68rem; color: var(--slate-400); }

.btn-icon { background: none; border: none; padding: .4rem; cursor: pointer; color: var(--slate-500); border-radius: var(--radius-sm); transition: var(--transition); }
.btn-icon:hover { color: var(--slate-900); background: var(--slate-200); }
.btn-icon svg { width: 18px; height: 18px; display: block; }
.btn-secondary {
  display: flex; align-items: center; gap: .4rem;
  padding: .45rem .85rem; background: #fff; border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm); font-size: .75rem; font-weight: 600; color: var(--slate-700);
  cursor: pointer; transition: var(--transition);
}
.btn-secondary:hover { border-color: var(--blue-500); color: var(--blue-600); }
.btn-secondary svg { width: 14px; height: 14px; }

/* Loading bar */
.loading-bar { height: 3px; position: fixed; top: 0; left: var(--sidebar-w); right: 0; z-index: 200; background: var(--slate-200); }
.loading-bar-inner { height: 100%; background: linear-gradient(90deg, var(--blue-500), var(--purple-500)); transition: width .3s ease; }
.loading-bar.hidden { display: none; }

/* ── Tab content ── */
.tab-content { padding: 1.5rem; display: flex; flex-direction: column; gap: 1.25rem; }
.tab-content.hidden { display: none; }

/* ── Loading state ── */
.loading-state { display: flex; flex-direction: row; align-items: center; justify-content: flex-start; background: #f8fafc; border: 1px solid var(--slate-200); border-radius: 8px; padding: 1rem 1.5rem; margin-bottom: 1.5rem; gap: 1.5rem; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05); }
.loading-spinner { width: 32px; height: 32px; border: 3px solid var(--slate-200); border-top-color: var(--blue-500); border-radius: 50%; animation: spin .8s linear infinite; flex-shrink: 0; }
.loading-text { font-size: 1rem; font-weight: 700; color: var(--slate-700); flex: 1; }
.loading-progress { width: 320px; display: flex; flex-direction: column; gap: .35rem; flex-shrink: 0; }
.progress-bar { height: 8px; background: var(--slate-200); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--blue-500), var(--purple-500)); border-radius: 99px; transition: width .4s ease; }
.progress-label { font-size: .75rem; font-weight: 600; color: var(--slate-500); text-align: center; }

/* ── KPI Grid ── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.25rem; }
.kpi-card {
  background: #fff; border-radius: var(--radius); padding: 1.25rem;
  border: 1px solid var(--slate-200); box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: .5rem;
  transition: var(--transition);
}
.kpi-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.kpi-icon { width: 36px; height: 36px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; }
.kpi-icon svg { width: 18px; height: 18px; }
.kpi-turmas .kpi-icon { background: var(--purple-100); color: var(--purple-700); }
.kpi-professores .kpi-icon { background: var(--blue-100); color: var(--blue-700); }
.kpi-alunos .kpi-icon { background: var(--green-100); color: var(--green-600); }
.kpi-alertas .kpi-icon { background: var(--red-100); color: var(--red-600); }
.kpi-participacao .kpi-icon { background: var(--purple-100); color: var(--purple-700); }
.kpi-resposta .kpi-icon { background: var(--blue-100); color: var(--blue-700); }
.kpi-value { font-size: 1.75rem; font-weight: 800; color: var(--slate-900); letter-spacing: -.03em; }
.kpi-alert-val { color: var(--red-600); }
.kpi-label { font-size: .7rem; font-weight: 600; color: var(--slate-500); text-transform: uppercase; letter-spacing: .04em; }

/* ── Overview Grid ── */
.overview-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 1rem; margin-bottom: 1.25rem; }
.card { background: #fff; border-radius: var(--radius); border: 1px solid var(--slate-200); box-shadow: var(--shadow); }
.card-header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--slate-100); }
.card-title { font-size: .85rem; font-weight: 700; color: var(--slate-800); }

.donut-wrapper { padding: 1.25rem; display: flex; align-items: center; gap: 1.5rem; }
#donut-chart { flex-shrink: 0; }
.donut-legend { display: flex; flex-direction: column; gap: .5rem; }
.legend-item { display: flex; align-items: center; gap: .5rem; font-size: .75rem; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.legend-count { font-weight: 800; color: var(--slate-900); }
.legend-label { color: var(--slate-500); }

/* ── Alertas ── */
.alertas-list { display: flex; flex-direction: column; }
.alerta-item {
  display: flex; align-items: flex-start; gap: .75rem;
  padding: .85rem 1.25rem; border-bottom: 1px solid var(--slate-100);
  transition: var(--transition); cursor: pointer;
}
.alerta-item:last-child { border-bottom: none; }
.alerta-item:hover { background: var(--slate-50); }
.alerta-gravidade { font-size: 1.1rem; flex-shrink: 0; }
.alerta-info { flex: 1; min-width: 0; }
.alerta-titulo { font-size: .8rem; font-weight: 700; color: var(--slate-800); }
.alerta-desc { font-size: .72rem; color: var(--slate-500); margin-top: 2px; }
.alerta-badge { font-size: .65rem; font-weight: 700; padding: .15rem .5rem; border-radius: 99px; flex-shrink: 0; margin-top: 2px; }
.badge-critico { background: var(--red-100); color: var(--red-600); }
.badge-urgente { background: var(--orange-100); color: var(--orange-500); }
.badge-atencao { background: var(--yellow-100); color: var(--yellow-500); }
.badge-ok { background: var(--green-100); color: var(--green-600); }

.alertas-full-list { padding: 0; }
.alertas-full-list .alerta-item { padding: 1rem 1.25rem; background: #fff; border-radius: var(--radius-sm); border: 1px solid var(--slate-200); margin-bottom: .5rem; }

/* ── Ranking ── */
.ranking-card { padding: 0; }
.ranking-list { padding: .5rem 0; }
.ranking-item {
  display: grid; grid-template-columns: 32px 1fr 80px 80px 80px 60px;
  align-items: center; gap: .75rem;
  padding: .9rem 1.25rem; border-bottom: 1px solid var(--slate-100);
}
.ranking-item:last-child { border-bottom: none; }
.rank-pos { font-size: .75rem; font-weight: 800; color: var(--slate-400); text-align: center; }
.rank-nome { font-size: .8rem; font-weight: 600; color: var(--slate-800); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-val { font-size: .75rem; text-align: center; color: var(--slate-600); }
.rank-score { font-size: .85rem; font-weight: 800; text-align: center; }
.score-high { color: var(--green-600); }
.score-mid { color: var(--yellow-500); }
.score-low { color: var(--red-600); }

/* ── Toolbar ── */
.toolbar { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.search-input {
  flex: 1; min-width: 200px; padding: .6rem 1rem;
  border: 1px solid var(--slate-200); border-radius: var(--radius-sm);
  font-size: .8rem; color: var(--slate-800); background: #fff;
  outline: none; transition: var(--transition);
}
.search-input:focus { border-color: var(--blue-500); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.select-filter {
  padding: .6rem .85rem; border: 1px solid var(--slate-200); border-radius: var(--radius-sm);
  font-size: .78rem; color: var(--slate-700); background: #fff;
  outline: none; cursor: pointer;
}

/* ── Turmas Grid ── */
.turmas-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1rem; }
.turma-card {
  background: #fff; border-radius: var(--radius); border: 1px solid var(--slate-200);
  box-shadow: var(--shadow); overflow: hidden; cursor: pointer;
  transition: var(--transition);
}
.turma-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--blue-300, #93c5fd); }
.turma-card-top { padding: 1rem 1.1rem; border-bottom: 1px solid var(--slate-100); }
.turma-status-bar { height: 4px; margin: -1rem -1.1rem 1rem; }
.status-bar-critico { background: var(--red-600); }
.status-bar-urgente { background: var(--orange-500); }
.status-bar-atencao { background: var(--yellow-500); }
.status-bar-ok { background: var(--green-600); }
.turma-name { font-size: .82rem; font-weight: 700; color: var(--slate-900); margin-bottom: .25rem; }
.turma-prof { font-size: .72rem; color: var(--slate-500); }
.turma-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(70px, 1fr)); gap: 0; }
.turma-metric { padding: .75rem .85rem; border-right: 1px solid var(--slate-100); text-align: center; }
.turma-metric:last-child { border-right: none; }
.turma-metric-val { font-size: 1.1rem; font-weight: 800; color: var(--slate-800); }
.turma-metric-label { font-size: .62rem; color: var(--slate-500); text-transform: uppercase; letter-spacing: .04em; margin-top: .15rem; }
.turma-alert-badge { display: inline-flex; align-items: center; gap: .3rem; padding: .35rem .75rem 0; font-size: .68rem; font-weight: 700; }

/* ── Table ── */
.table-wrapper { background: #fff; border-radius: var(--radius); border: 1px solid var(--slate-200); overflow: hidden; box-shadow: var(--shadow); }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { padding: .75rem 1rem; font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--slate-500); background: var(--slate-50); border-bottom: 1px solid var(--slate-200); text-align: left; white-space: nowrap; }
.data-table td { padding: .85rem 1rem; font-size: .8rem; color: var(--slate-700); border-bottom: 1px solid var(--slate-100); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--slate-50); }
.td-score { font-weight: 800; font-size: .9rem; }
.td-nome { font-weight: 600; color: var(--slate-900); }

/* ── Modal ── */
.modal-overlay { position: fixed; inset: 0; background: rgba(15,23,42,.6); z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.modal-overlay.hidden { display: none; }
.modal-box { background: #fff; border-radius: var(--radius); width: min(680px, 96vw); max-height: 85vh; display: flex; flex-direction: column; box-shadow: var(--shadow-lg); transition: all .25s ease; }
.modal-box.maximized { width: 98vw !important; max-width: 98vw; max-height: 96vh; border-radius: var(--radius-sm); }
.modal-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--slate-200); display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.modal-title { font-size: 1rem; font-weight: 800; color: var(--slate-900); }
.modal-subtitle { font-size: .75rem; color: var(--slate-500); margin-top: .2rem; }
.modal-close { background: var(--slate-100); border: none; width: 28px; height: 28px; border-radius: 50%; cursor: pointer; font-size: .85rem; color: var(--slate-600); display: flex; align-items: center; justify-content: center; flex-shrink: 0; transition: var(--transition); }
.modal-close:hover { background: var(--slate-200); color: var(--slate-900); }
.modal-body { padding: 1.5rem; overflow-y: auto; display: flex; flex-direction: column; gap: 1.25rem; }

/* Modal sections */
.modal-metrics { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: .75rem; }
.modal-kpi { background: var(--slate-50); border-radius: var(--radius-sm); padding: .85rem 1rem; border: 1px solid var(--slate-200); }
.modal-kpi-val { font-size: 1.3rem; font-weight: 800; color: var(--slate-900); }
.modal-kpi-label { font-size: .65rem; font-weight: 700; color: var(--slate-500); text-transform: uppercase; letter-spacing: .04em; margin-top: .2rem; }
.modal-section-title { font-size: .75rem; font-weight: 700; color: var(--slate-700); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .5rem; }
.modal-list { list-style: none; display: flex; flex-direction: column; gap: .25rem; max-height: 160px; overflow-y: auto; }
.modal-list li { font-size: .78rem; color: var(--slate-600); padding: .3rem .5rem; border-radius: 4px; background: var(--slate-50); }

/* Aluno selecionável */
.aluno-row { display: flex; align-items: center; gap: .5rem; padding: .3rem .5rem; border-radius: 4px; background: var(--slate-50); cursor: pointer; transition: background .12s; }
.aluno-row:hover { background: var(--blue-50); }
.aluno-row input[type=checkbox] { accent-color: var(--blue-600); width: 14px; height: 14px; flex-shrink: 0; cursor: pointer; }
.aluno-row label { flex: 1; font-size: .78rem; color: var(--slate-700); cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Toolbar de e-mail */
.email-toolbar { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; margin-top: .5rem; }
.btn-select-all { font-size: .68rem; font-weight: 700; color: var(--blue-600); background: none; border: none; cursor: pointer; padding: 0; text-decoration: underline; text-underline-offset: 2px; }
.btn-gmail {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .4rem .9rem; border-radius: 6px;
  background: #ea4335; color: #fff; font-size: .72rem; font-weight: 700;
  border: none; cursor: pointer; transition: opacity .15s;
  text-decoration: none;
}
.btn-gmail:hover { opacity: .88; }
.btn-gmail:disabled { opacity: .4; cursor: not-allowed; }

/* ── Utilities ── */
.hidden { display: none !important; }
.text-red { color: var(--red-600); }
.text-orange { color: var(--orange-500); }
.text-yellow { color: var(--yellow-500); }
.text-green { color: var(--green-600); }

/* ═══ UX REDESIGN: BREADCRUMB ═════════════════════════════════════════════ */
.breadcrumb {
  display: flex; align-items: center; gap: .35rem;
  font-size: .72rem; color: var(--slate-400);
}
.breadcrumb-step {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .2rem .55rem; border-radius: 999px;
  background: rgba(255,255,255,.06); border: 1px solid transparent;
  transition: all .2s; cursor: default; font-weight: 600;
  color: rgba(255,255,255,.4);
}
.breadcrumb-step.active {
  background: rgba(99,102,241,.2); border-color: rgba(99,102,241,.4);
  color: #a78bfa; font-weight: 700;
}
.breadcrumb-step.clickable { cursor: pointer; }
.breadcrumb-step.clickable:hover { background: rgba(99,102,241,.15); color: #c4b5fd; }
.breadcrumb-step.completed {
  background: rgba(22,163,74,.12); border-color: rgba(22,163,74,.3);
  color: #4ade80;
}
.breadcrumb-sep { color: rgba(255,255,255,.2); font-size: .6rem; }

/* ═══ UX REDESIGN: SCREEN TRANSITIONS ══════════════════════════════════════ */
.screen {
  animation: screen-enter .3s ease-out;
}
@keyframes screen-enter {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══ UX REDESIGN: HELP BUTTON (replaces fixed footer) ════════════════════ */
.btn-help {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .3rem .65rem; border-radius: 6px;
  background: rgba(99,102,241,.08); border: 1px solid rgba(99,102,241,.2);
  color: var(--purple-500); font-size: .72rem; font-weight: 600;
  cursor: pointer; transition: all .2s; font-family: inherit;
}
.btn-help:hover { background: rgba(99,102,241,.15); border-color: rgba(99,102,241,.35); }
.btn-help svg { width: 14px; height: 14px; }

/* Help dropdown popover */
.help-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0;
  background: var(--slate-900); border: 1px solid rgba(99,102,241,.25);
  border-radius: 12px; padding: .6rem; min-width: 240px;
  box-shadow: 0 16px 48px rgba(0,0,0,.4);
  z-index: 500; opacity: 0; transform: translateY(-4px) scale(.97);
  pointer-events: none; transition: all .15s ease;
}
.help-dropdown.open {
  opacity: 1; transform: translateY(0) scale(1); pointer-events: all;
}
.help-dropdown-item {
  display: flex; align-items: center; gap: .6rem;
  padding: .55rem .75rem; border-radius: 8px;
  font-size: .75rem; font-weight: 600; color: rgba(255,255,255,.7);
  cursor: pointer; transition: all .15s; background: none; border: none;
  width: 100%; text-align: left; font-family: inherit;
}
.help-dropdown-item:hover { background: rgba(255,255,255,.07); color: #fff; }
.help-dropdown-item .help-badges { display: flex; gap: .2rem; }
.help-dropdown-item .help-badges span {
  padding: .05rem .3rem; border-radius: 3px; font-size: .58rem; font-weight: 800; color: #fff;
}

/* ═══ UX REDESIGN: PULSE ANIMATION ════════════════════════════════════════ */
.btn-primary.pulse {
  animation: btn-pulse 2s ease-in-out infinite;
}
@keyframes btn-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(37,99,235,.4); }
  50% { box-shadow: 0 0 0 8px rgba(37,99,235,0); }
}

/* ═══ UX REDESIGN: STAGGERED CARD ENTRANCE ════════════════════════════════ */
@keyframes card-enter {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.kpi-card, .turma-card, .card {
  animation: card-enter .35s ease-out backwards;
}
.kpi-grid .kpi-card:nth-child(1) { animation-delay: .05s; }
.kpi-grid .kpi-card:nth-child(2) { animation-delay: .1s; }
.kpi-grid .kpi-card:nth-child(3) { animation-delay: .15s; }
.kpi-grid .kpi-card:nth-child(4) { animation-delay: .2s; }
.kpi-grid .kpi-card:nth-child(5) { animation-delay: .25s; }
.kpi-grid .kpi-card:nth-child(6) { animation-delay: .3s; }
.turmas-grid .turma-card:nth-child(n) { animation-delay: calc(var(--i, 0) * .04s); }

/* ═══ UX REDESIGN: SIDEBAR MINI-SUMMARY ═══════════════════════════════════ */
.sidebar-summary {
  padding: .6rem .85rem; margin: 0 .5rem;
  background: rgba(99,102,241,.1); border: 1px solid rgba(99,102,241,.2);
  border-radius: 8px; font-size: .7rem; color: rgba(255,255,255,.6);
  display: none; /* shown via JS when data is loaded */
  transition: all .2s;
}
.sidebar-summary .summary-val {
  font-weight: 800; color: #a78bfa; font-size: .82rem;
}

/* ═══ UX REDESIGN: SELECTION SCREEN IMPROVEMENTS ══════════════════════════ */
.sel-header {
  background: var(--purple-900); padding: .85rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-shrink: 0;
}
.sel-filter-bar {
  padding: .85rem 2rem; background: #fff;
  border-bottom: 1px solid var(--slate-200);
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
  flex-shrink: 0;
}
.sel-footer {
  background: #fff; border-top: 1px solid var(--slate-200);
  padding: .85rem 2rem; display: flex; align-items: center;
  justify-content: space-between; gap: 1rem; flex-shrink: 0;
  box-shadow: 0 -4px 16px rgba(0,0,0,.06);
}
.sel-footer .sel-count-display {
  display: flex; align-items: baseline; gap: .4rem;
}
.sel-footer .sel-count-num {
  font-size: 1.4rem; font-weight: 900; color: var(--purple-600);
  transition: transform .15s;
}
.sel-footer .sel-count-label {
  font-size: .8rem; color: var(--slate-500); font-weight: 500;
}

/* Sidebar action buttons redesign */
.sidebar-actions {
  display: flex; flex-direction: column; gap: .3rem;
  padding: .5rem;
}
.sidebar-action-btn {
  display: flex; align-items: center; gap: .55rem;
  padding: .55rem .75rem; border-radius: 8px;
  font-size: .75rem; font-weight: 600; cursor: pointer;
  transition: all .15s; border: 1px solid transparent;
  background: none; width: 100%; text-align: left;
  font-family: inherit;
}
.sidebar-action-btn.btn-back {
  color: #a78bfa;
}
.sidebar-action-btn.btn-back:hover {
  background: rgba(167,139,250,.1); border-color: rgba(167,139,250,.2);
}
.sidebar-action-btn.btn-exit {
  color: rgba(255,255,255,.45);
}
.sidebar-action-btn.btn-exit:hover {
  color: #f87171; background: rgba(248,113,113,.08);
}
.sidebar-action-btn svg { width: 15px; height: 15px; flex-shrink: 0; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .overview-grid { grid-template-columns: 1fr; }
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .loading-bar { left: 0; }
  .breadcrumb { display: none; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   REDESIGN UX — GESTÃO v2  (aditivo — não quebra nada existente)
   ═══════════════════════════════════════════════════════════════════════════ */

/* Semáforo global de alertas */
.semaforo-wrapper{display:flex;align-items:center;gap:.75rem;width:100%;margin-bottom:1rem;}
.semaforo-bar{display:flex;align-items:stretch;gap:.5rem;font-size:.85rem;font-weight:700;animation:card-enter .4s ease-out;flex:1;}
.semaforo-seg{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.25rem;padding:.75rem 1.25rem;flex:1;min-width:80px;cursor:pointer;transition:filter .15s,transform .15s,box-shadow .15s;border-radius:12px;box-shadow:0 2px 8px rgba(0,0,0,.12);}
.semaforo-seg:hover{filter:brightness(1.07);transform:translateY(-2px);box-shadow:0 6px 18px rgba(0,0,0,.18);}
.semaforo-seg.seg-critico{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;}
.semaforo-seg.seg-urgente{background:linear-gradient(135deg,#fb923c,#f97316);color:#fff;}
.semaforo-seg.seg-atencao{background:linear-gradient(135deg,#facc15,#eab308);color:#1e293b;}
.semaforo-seg.seg-ok{background:linear-gradient(135deg,#4ade80,#16a34a);color:#fff;}
.semaforo-num{font-size:1.8rem;font-weight:900;letter-spacing:-.04em;line-height:1;}
.semaforo-label{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;opacity:.9;}
.semaforo-seg.seg-zero{opacity:.3;cursor:default;filter:none !important;transform:none !important;box-shadow:none !important;}

/* Botão de critérios do semáforo */
.semaforo-criteria-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:rgba(100,116,139,.12);border:1px solid rgba(100,116,139,.2);color:var(--slate-500);font-size:.8rem;font-weight:800;cursor:pointer;transition:all .15s;flex-shrink:0;user-select:none;}
.semaforo-criteria-btn:hover{background:rgba(59,130,246,.15);border-color:rgba(59,130,246,.4);color:var(--blue-600);transform:scale(1.1);}

/* ── Botões de navegação do histórico (← →) ── */
/* Versão clara — barra superior roxa da tela de seleção */
.nav-hist-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:7px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:rgba(255,255,255,.9);cursor:pointer;transition:background .15s,transform .12s,box-shadow .15s;flex-shrink:0;padding:0;}
.nav-hist-btn:hover{background:rgba(255,255,255,.22);transform:scale(1.1);box-shadow:0 2px 8px rgba(0,0,0,.2);}
.nav-hist-btn:active{transform:scale(.93);}
/* Versão escura — content-header branco do dashboard */
.nav-hist-dark{background:rgba(100,116,139,.08);border-color:rgba(100,116,139,.18);color:var(--slate-500);}
.nav-hist-dark:hover{background:rgba(99,102,241,.1);border-color:rgba(99,102,241,.3);color:var(--purple-700);}
/* Versão sidebar — fundo escuro da barra lateral */
.nav-hist-sidebar{background:rgba(255,255,255,.07);border-color:rgba(255,255,255,.12);color:rgba(255,255,255,.55);width:32px;height:32px;border-radius:8px;}
.nav-hist-sidebar:hover{background:rgba(255,255,255,.15);color:rgba(255,255,255,.9);}

/* Painel de critérios */
.criteria-panel-overlay{position:fixed;inset:0;z-index:1100;display:flex;align-items:center;justify-content:center;padding:1.5rem;background:rgba(15,23,42,.55);backdrop-filter:blur(6px);}
.criteria-panel-overlay.hidden{display:none;}
.criteria-panel{background:#fff;border-radius:18px;width:min(580px,96vw);max-height:88vh;overflow-y:auto;overflow-x:hidden;box-shadow:0 32px 80px rgba(0,0,0,.25);animation:card-enter .22s ease-out;display:flex;flex-direction:column;transition:width .25s ease,max-height .25s ease,border-radius .25s ease;}
.criteria-panel.maximized{width:98vw;max-height:96vh;border-radius:10px;}
.criteria-panel-head{padding:1.25rem 1.5rem;border-bottom:1px solid var(--slate-200);display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-shrink:0;background:#fff;position:sticky;top:0;z-index:2;border-radius:18px 18px 0 0;}
.criteria-panel.maximized .criteria-panel-head{border-radius:10px 10px 0 0;}
.criteria-panel-title{font-size:1.05rem;font-weight:800;color:var(--slate-900);}
.criteria-panel-actions{display:flex;align-items:center;gap:.4rem;}
.criteria-panel-btn{background:var(--slate-100);border:none;width:32px;height:32px;border-radius:8px;cursor:pointer;font-size:.9rem;color:var(--slate-600);display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0;}
.criteria-panel-btn:hover{background:var(--slate-200);color:var(--slate-900);}
.criteria-panel-body{padding:1.5rem;display:flex;flex-direction:column;gap:1rem;flex:1;}
.criteria-item{border-radius:12px;overflow:hidden;border:1px solid rgba(0,0,0,.07);}
.criteria-item-head{display:flex;align-items:center;gap:.8rem;padding:.85rem 1.2rem;}
.criteria-item-name{font-size:.95rem;font-weight:800;}
.criteria-item-body{padding:.85rem 1.2rem 1rem;background:var(--slate-50);font-size:.875rem;color:var(--slate-600);line-height:1.75;}
.criteria-item-body ul{padding-left:1.25rem;margin-top:.4rem;display:flex;flex-direction:column;gap:.4rem;}
.criteria-item-body li{list-style:disc;}
.criteria-item-body li strong{color:var(--slate-800);}
.criteria-item.ci-critico .criteria-item-head{background:#fef2f2;}
.criteria-item.ci-critico .criteria-item-name{color:#b91c1c;}
.criteria-item.ci-urgente .criteria-item-head{background:#fff7ed;}
.criteria-item.ci-urgente .criteria-item-name{color:#c2410c;}
.criteria-item.ci-atencao .criteria-item-head{background:#fefce8;}
.criteria-item.ci-atencao .criteria-item-name{color:#92400e;}
.criteria-item.ci-normal .criteria-item-head{background:#f0fdf4;}
.criteria-item.ci-normal .criteria-item-name{color:#15803d;}
.criteria-panel-footer{padding:.85rem 1.5rem 1.5rem;font-size:.8rem;color:var(--slate-500);border-top:1px solid var(--slate-200);line-height:1.6;flex-shrink:0;}

/* Turma card v2 */
.turma-card-v2{background:#fff;border-radius:var(--radius);border:1px solid var(--slate-200);box-shadow:var(--shadow);overflow:hidden;cursor:pointer;transition:var(--transition);display:flex;flex-direction:column;border-left:5px solid var(--slate-300);}
.turma-card-v2:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);}
.turma-card-v2[data-alerta="critico"]{border-left-color:#dc2626;}
.turma-card-v2[data-alerta="urgente"]{border-left-color:#f97316;}
.turma-card-v2[data-alerta="atencao"]{border-left-color:#eab308;}
.turma-card-v2[data-alerta="ok"]{border-left-color:#16a34a;}
.turma-v2-head{display:flex;align-items:flex-start;justify-content:space-between;gap:.75rem;padding:.85rem 1rem .6rem;}
.turma-v2-info{flex:1;min-width:0;}
.turma-v2-nome{font-size:.82rem;font-weight:700;color:var(--slate-900);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.turma-v2-prof{font-size:.7rem;color:var(--slate-500);margin-top:.15rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.turma-v2-periodo{font-size:.6rem;color:var(--slate-400);margin-top:.1rem;}
.turma-v2-score{flex-shrink:0;width:46px;height:46px;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:900;line-height:1;cursor:pointer;transition:transform .15s,box-shadow .15s;user-select:none;}
.turma-v2-score:hover{transform:scale(1.12);box-shadow:0 4px 14px rgba(0,0,0,.15);}
.turma-v2-score .grade-letter{font-size:1.4rem;}
.turma-v2-score .grade-pts{font-size:.57rem;opacity:.75;margin-top:1px;}
.grade-a{background:#dcfce7;color:#15803d;}
.grade-b{background:#d1fae5;color:#065f46;}
.grade-c{background:#fef9c3;color:#854d0e;}
.grade-d{background:#ffedd5;color:#9a3412;}
.grade-f{background:#fee2e2;color:#991b1b;}
.turma-v2-reason{display:flex;align-items:center;gap:.4rem;padding:.42rem 1rem;font-size:.71rem;font-weight:700;border-top:1px solid var(--slate-100);min-height:30px;}
.turma-v2-reason.reason-critico{background:#fff1f2;color:#be123c;}
.turma-v2-reason.reason-urgente{background:#fff7ed;color:#c2410c;}
.turma-v2-reason.reason-atencao{background:#fefce8;color:#92400e;}
.turma-v2-reason.reason-ok{background:#f0fdf4;color:#15803d;}
.turma-v2-metrics{display:flex;align-items:center;padding:.45rem 1rem;border-top:1px solid var(--slate-100);}
.turma-v2-metric{flex:1;display:flex;flex-direction:column;align-items:center;border-right:1px solid var(--slate-100);padding:.15rem 0;}
.turma-v2-metric:last-child{border-right:none;}
.turma-v2-mval{font-size:.85rem;font-weight:800;color:var(--slate-800);}
.turma-v2-mlbl{font-size:.57rem;color:var(--slate-400);text-transform:uppercase;letter-spacing:.04em;margin-top:.1rem;}

/* Skeleton loader */
@keyframes shimmer{0%{background-position:-600px 0;}100%{background-position:600px 0;}}
.skeleton{background:linear-gradient(90deg,#f1f5f9 25%,#e2e8f0 50%,#f1f5f9 75%);background-size:1200px 100%;animation:shimmer 1.4s ease-in-out infinite;border-radius:6px;}
.skeleton-val{height:28px;width:55%;margin:6px 0;}
.skeleton-text{height:12px;margin:4px 0;width:80%;}

/* Context chips */
.context-chip{display:inline-flex;align-items:center;gap:.3rem;padding:.18rem .6rem;border-radius:999px;font-size:.67rem;font-weight:700;}
.context-chip-periodo{background:var(--purple-100);color:var(--purple-700);}
.context-chip-count{background:var(--blue-100);color:var(--blue-700);}

/* Card professores ausentes */
#card-profs-ausentes{background:linear-gradient(135deg,#fff7ed,#fff) !important;}

@media (max-width:640px){
  .semaforo-seg{padding:.6rem .5rem;min-width:60px;}
  .semaforo-num{font-size:1.4rem;}
  .semaforo-label{font-size:.6rem;}
  .turmas-grid{grid-template-columns:1fr;}
  .criteria-panel{width:98vw;}
}

/* === Auth Firebase tabs === */
.aba-ativa { border-bottom: 2px solid #7c3aed !important; color: #a78bfa !important; }