/* ============================================================
   Cuarahí · style.css v7 — responsive
   ============================================================ */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --color-background-primary:   #ffffff;
  --color-background-secondary: #f7f9fb;
  --color-background-tertiary:  #f1f4f6;
  --color-text-primary:   #1f2937;
  --color-text-secondary: #4b5563;
  --color-text-tertiary:  #9ca3af;
  --color-border-secondary: #e5e7eb;
  --color-border-tertiary:  #eef0f2;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --color-accent:       #1D9E75;
  --color-accent-dark:  #0F6E56;
  --color-accent-light: #E1F5EE;
  --color-accent-text:  #0F6E56;
  --color-teal-bg:   #E1F5EE; --color-teal-text:   #0F6E56;
  --color-blue-bg:   #EFF6FF; --color-blue-text:   #1D4ED8;
  --color-amber-bg:  #FFFBEB; --color-amber-text:  #B45309;
  --color-purple-bg: #F5F3FF; --color-purple-text: #6D28D9;
  --color-red-bg:    #FEF2F2; --color-red-text:    #B91C1C;
  --color-gray-bg:   var(--color-background-secondary);
  --color-gray-text: var(--color-text-secondary);
  --sidebar-w: 220px;
  --topbar-h: 52px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; font-family: var(--font-sans); font-size: 14px; color: var(--color-text-primary); background: var(--color-background-tertiary); -webkit-font-smoothing: antialiased; }

/* ── Layout ───────────────────────────────────────────────── */
.app { display: flex; height: 100vh; overflow: hidden; }

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--color-background-primary);
  border-right: 1px solid var(--color-border-tertiary);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  transition: transform .25s ease;
  z-index: 200;
}

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; overflow: hidden; }

.topbar {
  height: var(--topbar-h);
  flex-shrink: 0;
  background: var(--color-background-primary);
  border-bottom: 1px solid var(--color-border-tertiary);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 10px;
  position: relative;
  z-index: 100;
}

#main-content { flex: 1; overflow-y: auto; padding: 20px 16px; }

/* ── Sidebar toggle (mobile) ─────────────────────────────── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.35);
  z-index: 190;
}
.btn-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--color-text-secondary);
  flex-shrink: 0;
}

/* ── Sidebar content ──────────────────────────────────────── */
.logo { padding: 16px; border-bottom: 1px solid var(--color-border-tertiary); }
.logo-title { font-size: 16px; font-weight: 600; }
.logo-sub   { font-size: 11px; color: var(--color-text-tertiary); margin-top: 2px; }

.nav-section { padding: 14px 12px 4px; font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-tertiary); }

.nav-item {
  display: flex; align-items: center; gap: 9px;
  margin: 1px 6px; padding: 9px 10px;
  border-radius: var(--border-radius-md);
  cursor: pointer; font-size: 13px;
  color: var(--color-text-secondary);
  transition: background .12s, color .12s;
  user-select: none;
}
.nav-item:hover  { background: var(--color-background-secondary); color: var(--color-text-primary); }
.nav-item.active { background: var(--color-accent-light); color: var(--color-accent-text); font-weight: 500; }
.nav-item svg    { width: 15px; height: 15px; flex-shrink: 0; opacity: .6; }
.nav-item.active svg { opacity: 1; }

/* ── Topbar elements ──────────────────────────────────────── */
#page-title { font-size: 15px; font-weight: 500; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.periodo-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--color-amber-bg); color: var(--color-amber-text);
  padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 500;
  white-space: nowrap; flex-shrink: 0;
}
.periodo-chip-dot { width: 6px; height: 6px; border-radius: 50%; background: #D97706; flex-shrink: 0; }

/* ── Buscador ─────────────────────────────────────────────── */
.search-wrap {
  position: relative;
  flex: 1;
  max-width: 300px;
  min-width: 0;
}
.search-input {
  width: 100%;
  padding: 7px 11px 7px 32px;
  font-size: 13px;
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  background: var(--color-background-secondary);
  color: var(--color-text-primary);
  outline: none;
  font-family: var(--font-sans);
  transition: border-color .15s, box-shadow .15s;
}
.search-input:focus {
  background: var(--color-background-primary);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(29,158,117,.12);
}
.search-icon {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px; height: 14px;
  color: var(--color-text-tertiary);
  pointer-events: none;
  flex-shrink: 0;
}
.search-results {
  position: absolute;
  top: calc(100% + 6px); left: 0; right: 0;
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
  z-index: 999;
  max-height: 280px;
  overflow-y: auto;
}
.search-result-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 13px; cursor: pointer; font-size: 13px;
  border-bottom: 1px solid var(--color-border-tertiary);
  transition: background .1s;
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--color-background-secondary); }
.search-result-name { font-weight: 500; }
.search-result-meta { font-size: 11px; color: var(--color-text-tertiary); margin-top: 1px; }

/* ── User chip ────────────────────────────────────────────── */
.user-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--color-text-secondary);
  cursor: pointer; padding: 4px 8px; border-radius: 20px;
  border: 1px solid var(--color-border-secondary);
  background: var(--color-background-secondary);
  transition: background .12s; white-space: nowrap; flex-shrink: 0;
}
.user-chip:hover { background: var(--color-background-tertiary); }
.user-chip-dot {
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--color-accent-light); color: var(--color-accent-text);
  font-size: 10px; font-weight: 600;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.user-chip-name { display: inline; }

/* ── Botones ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--border-radius-md);
  font-size: 13px; font-family: var(--font-sans); font-weight: 400;
  cursor: pointer; border: 1px solid var(--color-border-secondary);
  background: var(--color-background-primary); color: var(--color-text-primary);
  transition: background .12s; white-space: nowrap;
}
.btn:hover   { background: var(--color-background-secondary); }
.btn:active  { transform: scale(0.98); }
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); }
.btn-danger  { background: var(--color-red-bg); border-color: #FECACA; color: var(--color-red-text); }
.btn-danger:hover { background: #FEE2E2; }
.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn-group { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 16px 18px; margin-bottom: 14px;
}
.card-title { font-size: 13px; font-weight: 500; margin-bottom: 14px; }

/* ── Stats ────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; margin-bottom: 14px; }
.stat-card  { background: var(--color-background-secondary); border-radius: var(--border-radius-md); padding: 14px; }
.stat-number{ font-size: 24px; font-weight: 600; line-height: 1; }
.stat-label { font-size: 12px; color: var(--color-text-secondary); margin-top: 4px; }

/* ── Tabla ────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 420px; }
.table th {
  text-align: left; font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .05em;
  color: var(--color-text-tertiary); padding: 0 12px 10px;
  border-bottom: 1px solid var(--color-border-tertiary);
}
.table td { padding: 10px 12px; border-bottom: 1px solid var(--color-border-tertiary); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tbody tr:hover td { background: var(--color-background-secondary); }

/* ── Badges ───────────────────────────────────────────────── */
.badge { display: inline-flex; align-items: center; padding: 3px 9px; border-radius: 20px; font-size: 11px; font-weight: 500; white-space: nowrap; }
.badge + .badge { margin-left: 4px; }
.badge-teal   { background: var(--color-teal-bg);   color: var(--color-teal-text); }
.badge-blue   { background: var(--color-blue-bg);   color: var(--color-blue-text); }
.badge-amber  { background: var(--color-amber-bg);  color: var(--color-amber-text); }
.badge-purple { background: var(--color-purple-bg); color: var(--color-purple-text); }
.badge-red    { background: var(--color-red-bg);    color: var(--color-red-text); }
.badge-gray   { background: var(--color-gray-bg);   color: var(--color-gray-text); }

/* ── Formularios ──────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 12px; font-weight: 500; color: var(--color-text-secondary); }

input[type="text"], input[type="date"], input[type="email"],
input[type="password"], select, textarea {
  font-family: var(--font-sans); font-size: 13px;
  color: var(--color-text-primary); background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md); padding: 10px 25px; width: 100%;
  outline: none; transition: border-color .15s, box-shadow .15s;
  -webkit-appearance: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(29,158,117,.12);
}
textarea { resize: vertical; min-height: 120px; line-height: 1.6; }

.materia-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px; border: 1px solid var(--color-border-secondary); border-radius: var(--border-radius-md); }
.materia-chip {
  padding: 5px 12px; border-radius: 20px; font-size: 12px; cursor: pointer;
  border: 1px solid var(--color-border-secondary);
  color: var(--color-text-secondary); background: var(--color-background-secondary);
  user-select: none; transition: background .12s, color .12s;
}
.materia-chip.selected { background: var(--color-accent-light); color: var(--color-accent-text); border-color: #9FE1CB; }

/* ── Page header ──────────────────────────────────────────── */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; flex-wrap: wrap; gap: 10px; }
.filter-bar  { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter-bar select { width: auto; }

/* ── Wizard ───────────────────────────────────────────────── */
.step-bar { display: flex; margin-bottom: 22px; }
.step { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 4px; position: relative; }
.step::after { content: ''; position: absolute; top: 13px; left: 50%; width: 100%; height: 1px; background: var(--color-border-tertiary); }
.step:last-child::after { display: none; }
.step-dot {
  width: 26px; height: 26px; border-radius: 50%;
  border: 1px solid var(--color-border-secondary);
  background: var(--color-background-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 500; z-index: 1; color: var(--color-text-tertiary);
}
.step-dot.done   { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.step-dot.active { background: var(--color-accent-light); border-color: var(--color-accent); color: var(--color-accent-text); }
.step-label { font-size: 10px; color: var(--color-text-tertiary); text-align: center; }
.step.active .step-label { color: var(--color-accent-text); font-weight: 500; }

.sel-cards { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 14px; }
.sel-card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  padding: 14px; cursor: pointer; transition: border-color .15s, background .15s;
}
.sel-card:hover    { border-color: #5DCAA5; }
.sel-card.selected { border-color: var(--color-accent); background: var(--color-accent-light); }
.sel-card.read-only { opacity: .6; cursor: default; border-style: dashed; }
.sel-card.read-only:hover { border-color: var(--color-border-tertiary); }
.sel-card-label { font-size: 10px; color: var(--color-text-tertiary); margin-bottom: 3px; }
.sel-card-value { font-size: 13px; font-weight: 500; }
.sel-card.selected .sel-card-value { color: var(--color-accent-text); }
.sel-card-sub   { font-size: 11px; color: var(--color-text-tertiary); margin-top: 2px; }

/* ── Ficha ────────────────────────────────────────────────── */
.ficha-header-card { margin-bottom: 14px; }
.progreso-bar  { height: 5px; background: var(--color-border-tertiary); border-radius: 4px; overflow: hidden; width: 160px; }
.progreso-fill { height: 100%; background: var(--color-accent); border-radius: 4px; transition: width .4s ease; }
.ficha-materias { display: flex; flex-direction: column; gap: 12px; }
.ficha-materia {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg); overflow: hidden;
}
.ficha-materia-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 11px 16px; border-bottom: 1px solid var(--color-border-tertiary);
  background: var(--color-background-secondary); flex-wrap: wrap; gap: 6px;
}
.ficha-materia-nombre { font-size: 13px; font-weight: 500; }
.ficha-materia-body { padding: 13px 16px; }
.ficha-textarea {
  width: 100%; min-height: 110px; font-family: var(--font-sans); font-size: 13px;
  line-height: 1.7; color: var(--color-text-primary); background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary); border-radius: var(--border-radius-md);
  padding: 10px 12px; resize: vertical; outline: none; transition: border-color .15s, box-shadow .15s;
}
.ficha-textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(29,158,117,.12); }
.ficha-texto { font-size: 13px; line-height: 1.8; padding: 4px 0; }
.avatar {
  border-radius: 50%; background: var(--color-accent-light); color: var(--color-accent-text);
  display: flex; align-items: center; justify-content: center; font-weight: 600; flex-shrink: 0;
}

/* ── Alerts ───────────────────────────────────────────────── */
.alert { padding: 10px 14px; border-radius: var(--border-radius-md); font-size: 13px; margin-bottom: 14px; }
.alert-info    { background: #EFF6FF; border: 1px solid #BFDBFE; color: #1D4ED8; }
.alert-success { background: var(--color-teal-bg); border: 1px solid #9FE1CB; color: var(--color-teal-text); }
.alert-warning { background: var(--color-amber-bg); border: 1px solid #FCD34D; color: var(--color-amber-text); }

/* ── Grupos colapsables ───────────────────────────────────── */
.grupo-collapsible { background: var(--color-background-primary); border: 1px solid var(--color-border-tertiary); border-radius: var(--border-radius-lg); margin-bottom: 8px; overflow: hidden; }
.grupo-header { display: flex; align-items: center; justify-content: space-between; padding: 13px 16px; cursor: pointer; user-select: none; gap: 10px; flex-wrap: wrap; transition: background .12s; }
.grupo-header:hover { background: var(--color-background-secondary); }
.grupo-chevron { font-size: 10px; color: var(--color-text-tertiary); flex-shrink: 0; }
.grupo-body { border-top: 1px solid var(--color-border-tertiary); }

/* ── Divider / utils ──────────────────────────────────────── */
.divider { height: 1px; background: var(--color-border-tertiary); margin: 14px 0; }
.text-muted  { color: var(--color-text-tertiary); }
.text-sm     { font-size: 12px; }
.text-right  { text-align: right; }
.mt-sm  { margin-top: 8px; }
.mt-md  { margin-top: 14px; }
.flex   { display: flex; align-items: center; gap: 8px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-end { display: flex; align-items: center; justify-content: flex-end; gap: 8px; }
.empty-state { text-align: center; padding: 48px 24px; color: var(--color-text-tertiary); font-size: 14px; }

/* ── Toast ────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 20px; right: 20px;
  padding: 12px 18px; border-radius: var(--border-radius-md);
  font-size: 13px; font-weight: 500; z-index: 9999;
  opacity: 0; transform: translateY(8px);
  transition: opacity .25s, transform .25s; pointer-events: none; max-width: 300px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast-success { background: var(--color-accent); color: #fff; }
.toast-error   { background: #DC2626; color: #fff; }
.toast-info    { background: #1D4ED8; color: #fff; }

/* ── Login ────────────────────────────────────────────────── */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--color-background-tertiary); padding: 20px; }
.login-card {
  background: var(--color-background-primary); border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg); padding: 32px 36px; width: 100%; max-width: 360px;
  box-shadow: 0 4px 24px rgba(0,0,0,.06);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo-title { font-size: 22px; font-weight: 600; }
.login-logo-sub   { font-size: 12px; color: var(--color-text-tertiary); margin-top: 3px; }
.login-error { background: var(--color-red-bg); border: 1px solid #FECACA; color: var(--color-red-text); border-radius: var(--border-radius-md); padding: 9px 13px; font-size: 13px; margin-bottom: 14px; }

/* ── Sidebar rol ──────────────────────────────────────────── */
.sidebar[data-rol="profesor"]     .nav-admin { display: none; }
.sidebar[data-rol="coordinador"]  .nav-admin { display: none; }
/* Coordinador sí ve Períodos */
.sidebar[data-rol="coordinador"]  .nav-coord { display: flex; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

/* Tablet: 768px */
@media (max-width: 900px) {
  :root { --sidebar-w: 200px; }
  .stats-grid   { grid-template-columns: 1fr 1fr; }
  .sel-cards    { grid-template-columns: 1fr 1fr; }
  .form-grid    { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: 1; }
  #main-content { padding: 16px 14px; }
  .user-chip-name { display: none; }
  .periodo-chip   { display: none; }
}

/* Mobile: 640px — sidebar se convierte en drawer */
@media (max-width: 640px) {
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0,0,0,.12);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .btn-menu { display: flex; }

  .stats-grid   { grid-template-columns: 1fr; }
  .sel-cards    { grid-template-columns: 1fr 1fr; }
  #main-content { padding: 14px 12px; }

  /* Ocultar columnas menos importantes en tablas */
  .table .hide-mobile { display: none; }

  /* Topbar compacto */
  .topbar { gap: 8px; padding: 0 12px; }
  #page-title { font-size: 14px; }
  .search-wrap { max-width: 160px; }

  /* Ficha: header apilado */
  .ficha-header-card .flex-wrap { flex-direction: column; align-items: flex-start; }
  .progreso-bar { width: 100%; margin-left: 0 !important; }

  /* Botones en ficha */
  .ficha-materia-body .flex-end { flex-direction: column; align-items: stretch; }
  .ficha-materia-body .flex-end .btn { justify-content: center; }

  /* Grupos colapsables */
  .grupo-header { padding: 11px 12px; }

  /* Wizard cards */
  .step-label { display: none; }
}

/* Muy chico: 380px */
@media (max-width: 380px) {
  .sel-cards { grid-template-columns: 1fr; }
  .login-card { padding: 24px 20px; }
}


/* ── Vista grupal de evaluaciones (evalGrupo) ─────────────── */
.eg-alumno-card {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  margin-bottom: 10px;
  overflow: hidden;
}

.eg-alumno-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 16px;
  background: var(--color-background-secondary);
  border-bottom: 1px solid var(--color-border-tertiary);
  flex-wrap: wrap;
  gap: 8px;
  cursor: default;
}

.eg-alumno-body {
  padding: 12px 16px;
}

/* ── Vista grupal de evaluaciones (evalGrupo) — estilos completos ── */

/* Tabs de materias */
.evalg-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-tertiary);
  background: var(--color-background-secondary);
}
.evalg-tab {
  padding: 6px 13px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid transparent;
  background: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
  white-space: nowrap;
}
.evalg-tab:hover  { background: var(--color-background-tertiary); color: var(--color-text-primary); }
.evalg-tab.active { background: var(--color-accent-light); color: var(--color-accent-text); border-color: var(--color-accent); }

/* Lista de alumnos */
.evalg-lista { display: flex; flex-direction: column; gap: 10px; }

/* Fila de cada alumno */
.evalg-alumno-row {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: border-color .15s;
}
.evalg-alumno-row:focus-within { border-color: var(--color-accent); }

.evalg-alumno-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--color-background-secondary);
  border-bottom: 1px solid var(--color-border-tertiary);
  flex-wrap: wrap;
  gap: 8px;
}

.evalg-alumno-body { padding: 12px 14px; }

/* Textarea editable */
.evalg-textarea {
  width: 100%;
  min-height: 90px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-primary);
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  padding: 9px 11px;
  resize: vertical;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.evalg-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(29,158,117,.12);
}

/* Texto solo lectura */
.evalg-texto-ro {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-primary);
  padding: 4px 0;
  white-space: pre-wrap;
}

/* Responsive */
@media (max-width: 640px) {
  .evalg-tabs { padding: 8px; gap: 4px; }
  .evalg-tab  { font-size: 11px; padding: 5px 10px; }
  .evalg-alumno-header { padding: 9px 12px; }
  .evalg-alumno-body   { padding: 10px 12px; }
}

/* ── Modo "Ver todo" — secciones por materia ─────────────── */
.evalg-seccion {
  margin-bottom: 24px;
}
.evalg-seccion-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--color-background-tertiary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
  border-bottom: 2px solid var(--color-accent);
  margin-bottom: 8px;
}
.evalg-seccion-titulo {
  font-weight: 700;
  font-size: 14px;
  color: var(--color-text-primary);
  letter-spacing: .01em;
}

/* Tab "Ver todo" — estilo levemente diferenciado */
.evalg-tab-all {
  margin-left: auto;
  border-color: var(--color-border-secondary);
  color: var(--color-text-secondary);
}
.evalg-tab-all:hover, .evalg-tab-all.active {
  background: var(--color-background-tertiary);
  color: var(--color-text-primary);
  border-color: var(--color-accent);
}

/* ── Modo "Ver todo" agrupado por alumno ─────────────────── */
.evalg-materia-fila {
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: var(--color-background-primary);
}
.evalg-materia-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 12px;
  background: var(--color-background-secondary);
  border-bottom: 1px solid var(--color-border-tertiary);
  gap: 8px;
}
.evalg-materia-nombre {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* ── Botón flotante "ir al top" ──────────────────────────── */
#btn-scroll-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 999;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  box-shadow: 0 3px 10px rgba(0,0,0,.18);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
#btn-scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
#btn-scroll-top:hover {
  filter: brightness(1.1);
}
@media (max-width: 640px) {
  #btn-scroll-top { bottom: 16px; right: 14px; width: 36px; height: 36px; font-size: 16px; }
}

/* ── Modal de confirmación ───────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  transition: opacity .18s;
  padding: 16px;
}
.modal-overlay.show { opacity: 1; }

.modal-box {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-xl, 12px);
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
  width: 100%;
  max-width: 400px;
  transform: translateY(6px);
  transition: transform .18s;
}
.modal-overlay.show .modal-box { transform: translateY(0); }

.modal-header {
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--color-border-tertiary);
}
.modal-titulo {
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text-primary);
}

.modal-body {
  padding: 16px 20px;
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}
.modal-body strong { color: var(--color-text-primary); }

.modal-footer {
  padding: 12px 20px 16px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  border-top: 1px solid var(--color-border-tertiary);
}

/* ── Notas internas por materia ──────────────────────────── */
.btn-notas {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-border-secondary);
  border-radius: 20px;
  background: var(--color-background-secondary);
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: background .12s, border-color .12s;
  flex-shrink: 0;
}
.btn-notas:hover {
  background: var(--color-background-tertiary);
  border-color: var(--color-accent);
  color: var(--color-accent-text);
}
.notas-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 10px;
  background: red;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
}

/* Lista dentro del modal */
.notas-lista {
  padding: 12px 16px;
  max-height: 320px;
  overflow-y: auto;
  border-bottom: 1px solid var(--color-border-tertiary);
}
.notas-empty {
  color: var(--color-text-secondary);
  font-size: 13px;
  padding: 8px 0;
  font-style: italic;
}
.notas-hilo-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Nota raíz */
.nota-raiz {
  background: var(--color-background-secondary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--border-radius-lg);
  padding: 10px 12px;
}

/* Hilo de respuestas */
.nota-hilo {
  margin-top: 8px;
  padding-left: 12px;
  border-left: 2px solid var(--color-accent);
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.nota-respuesta {
  background: var(--color-background-primary);
  border: 1px solid var(--color-border-tertiary);
  border-radius: var(--border-radius-md);
  padding: 8px 10px;
}

/* Cabecera de cada nota */
.nota-meta-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.nota-autor {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-primary);
}
.nota-en-respuesta {
  font-size: 11px;
  color: var(--color-text-secondary);
  font-style: italic;
}
.nota-en-respuesta strong { color: var(--color-accent-text); font-style: normal; }

.nota-fecha {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-left: auto;
}

/* Texto */
.nota-texto {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

/* Acciones */
.nota-acciones-bar {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.btn-nota-reply,
.btn-nota-edit,
.btn-nota-del {
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 4px;
  border: 1px solid var(--color-border-secondary);
  background: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: background .1s;
}
.btn-nota-reply { border-color: var(--color-accent); color: var(--color-accent-text); }
.btn-nota-reply:hover { background: var(--color-accent-light); }
.btn-nota-edit:hover  { background: var(--color-background-tertiary); }
.btn-nota-del:hover   { background: var(--color-red-bg); color: var(--color-red-text); border-color: #FECACA; }

/* Caja de respuesta inline */
.nota-reply-box {
  margin-top: 8px;
  padding: 10px;
  background: var(--color-background-secondary);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-border-tertiary);
}
.nota-reply-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}
.nota-reply-label strong { color: var(--color-text-primary); }

/* Área nueva nota */
.notas-nueva {
  padding: 14px 16px 16px;
  border-top: 2px dashed var(--color-border-tertiary);
  background: var(--color-background-secondary);
  border-radius: 0 0 12px 12px;
}
.notas-nueva::before {
  content: '+ Nueva nota';
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}