/* ============================================================
   UNSAAC – Sistema de Laboratorios  |  style.css
   Design System: Light, Formal, Professional
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── TOKENS ─────────────────────────────────────────────── */
:root {
  --bg:            #EFF3FA;
  --card:          #FFFFFF;
  --primary:       #2952C3;
  --primary-dk:    #1E3FA8;
  --primary-lt:    #EBF0FF;
  --accent:        #20B2A0;
  --accent-lt:     #E4F5F3;
  --warning:       #D97706;
  --warning-lt:    #FEF3E2;
  --danger:        #DC2626;
  --danger-lt:     #FEE8E8;
  --success:       #16A34A;
  --success-lt:    #DCFCE7;

  --txt:           #1C2640;
  --txt-sec:       #64748B;
  --txt-muted:     #9BADC0;
  --border:        #DDE5F0;
  --border-lt:     #EEF2FA;

  --sidebar-w:     260px;
  --sidebar-coll:  70px;
  --header-h:      60px;

  --sh-sm:  0 1px 4px rgba(30,64,175,.06);
  --sh-md:  0 2px 14px rgba(30,64,175,.09);
  --sh-lg:  0 6px 30px rgba(30,64,175,.13);

  --r-sm: 6px; --r-md: 10px; --r-lg: 16px; --r-xl: 24px;
  --tr: 180ms ease;
}

/* ── RESET ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font, 'Inter', system-ui, sans-serif);
       background: var(--bg); color: var(--txt); line-height: 1.55;
       min-height: 100vh; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── LAYOUT ──────────────────────────────────────────────── */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ── SIDEBAR ─────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  min-height: 0;
  background: var(--card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  z-index: 100;
  transition: width var(--tr), transform var(--tr);
  overflow: hidden;
  box-shadow: var(--sh-sm);
}

.sidebar.collapsed { width: var(--sidebar-coll); }

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-lt);
  min-height: var(--header-h);
}
.sidebar-brand .brand-logo {
  width: 34px; height: 34px;
  background: #7dd3fc;
  border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: #083344; font-weight: 800; font-size: 13px;
  letter-spacing: 0;
}
.sidebar-brand .brand-text { overflow: hidden; }
.sidebar-brand .brand-name {
  font-size: 13.5px; font-weight: 700; color: var(--txt);
  white-space: nowrap; line-height: 1.2;
}
.sidebar-brand .brand-sub {
  font-size: 11px; color: var(--txt-muted); white-space: nowrap;
}

.sidebar-nav {
  flex: 1;
  padding: 10px 10px;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: #CBD5E1 transparent;
}

.sidebar-nav::-webkit-scrollbar { width: 6px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 999px; }

.sidebar-nav-admin { overflow-y: hidden; }

.nav-section-label {
  font-size: 10.5px; font-weight: 600; letter-spacing: .08em;
  color: var(--txt-muted); text-transform: uppercase;
  padding: 14px 10px 6px;
  white-space: nowrap; overflow: hidden;
  transition: opacity var(--tr);
}
.sidebar.collapsed .nav-section-label { opacity: 0; }

.nav-divider {
  height: 1px;
  margin: 8px 10px;
  background: var(--border);
  transition: opacity var(--tr);
}
.sidebar.collapsed .nav-divider { opacity: 0; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 10px;
  border-radius: var(--r-md);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--txt-sec);
  transition: background var(--tr), color var(--tr);
  white-space: nowrap;
  cursor: pointer;
}
.nav-item:hover { background: var(--bg); color: var(--txt); }
.nav-item.active {
  background: var(--primary-lt);
  color: var(--primary);
  font-weight: 600;
}
.nav-item .nav-icon {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 17px; flex-shrink: 0;
  background: transparent;
  transition: background var(--tr);
}
.nav-item.active .nav-icon { background: var(--primary-lt); }
.nav-item:hover .nav-icon  { background: var(--bg); }
.nav-item .nav-label { overflow: hidden; transition: opacity var(--tr), width var(--tr); }
.sidebar.collapsed .nav-label { opacity: 0; width: 0; }

@media (max-height: 900px) {
  .sidebar-nav-admin { padding-top: 6px; padding-bottom: 6px; }
  .sidebar-nav-admin .nav-item { padding-top: 5px; padding-bottom: 5px; }
  .sidebar-nav-admin .nav-item .nav-icon { height: 34px; }
  .sidebar-nav-admin .nav-divider { margin-top: 6px; margin-bottom: 6px; }
}

@media (max-height: 720px) {
  .sidebar-nav-admin .nav-item { padding-top: 3px; padding-bottom: 3px; }
  .sidebar-nav-admin .nav-item .nav-icon { height: 32px; }
  .sidebar-nav-admin .nav-divider { margin-top: 5px; margin-bottom: 5px; }
}

@media (max-height: 650px) {
  .sidebar-nav-admin { overflow-y: auto; }
}

.coord-docentes-list {
  display: grid;
  gap: 8px;
  padding: 2px 4px 10px;
}

.coord-docente-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  padding: 8px 9px;
  transition: border-color var(--tr), background var(--tr), box-shadow var(--tr);
}

.coord-docente-card:hover {
  border-color: #bfcde7;
  background: #f8fbff;
}

.coord-docente-card.active {
  border-color: var(--accent);
  background: var(--accent-lt);
  box-shadow: 0 0 0 1px rgba(32,178,160,.12) inset;
}

.coord-docente-name {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--txt);
  line-height: 1.2;
}

.coord-docente-code {
  display: block;
  font-size: 11px;
  color: var(--txt-sec);
  margin-top: 3px;
}

.sidebar.collapsed .coord-docentes-list {
  display: none;
}

.sidebar-footer {
  border-top: 1px solid var(--border-lt);
  padding: 12px 10px;
}

.notes-timer-card {
  border: 1px solid #dbe8ff;
  border-radius: 12px;
  background: linear-gradient(145deg, #eef4ff 0%, #f8fbff 100%);
  padding: 10px 12px;
  margin-bottom: 10px;
  box-shadow: var(--sh-sm);
}

.notes-timer-title {
  font-size: 11px;
  color: var(--txt-sec);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
}

.notes-timer-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dk);
  line-height: 1.2;
  margin-top: 4px;
}

.notes-timer-meta {
  font-size: 11px;
  color: var(--txt-sec);
  margin-top: 4px;
}

.notes-timer-close {
  font-size: 11px;
  color: var(--txt);
  margin-top: 4px;
  font-weight: 600;
}

.notes-timer-card[data-status='activo'] .notes-timer-value { color: var(--success); }
.notes-timer-card[data-status='programado'] .notes-timer-value { color: var(--primary); }
.notes-timer-card[data-status='cerrado'] .notes-timer-value { color: var(--danger); }
.notes-timer-card[data-status='no_habilitado'] .notes-timer-value,
.notes-timer-card[data-status='sin_fechas'] .notes-timer-value { color: var(--txt-muted); }

.sidebar.collapsed .notes-timer-card {
  display: none;
}
.user-card {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: var(--r-md);
  overflow: hidden;
}
.student-user-card { flex-direction:column; justify-content:center; text-align:center; gap:7px; }
.student-avatar-link { position:relative; display:flex; width:68px; height:68px; align-items:center; justify-content:center; flex-shrink:0; border-radius:50%; overflow:hidden; text-decoration:none; border:2px solid var(--card); box-shadow:var(--sh-sm); background:var(--primary-lt); }
.student-avatar-photo { position:absolute; inset:0; width:100%; height:100%; border-radius:50%; object-fit:cover; background:var(--primary-lt); }
.student-avatar-fallback { width:100%; height:100%; font-size:16px; }
.student-user-card .user-info { width:100%; min-width:0; }
.student-user-card .user-name { white-space:normal; line-height:1.25; }
.sidebar.collapsed .student-avatar-link { width:42px; height:42px; }
.user-avatar {
  width: 34px; height: 34px;
  background: var(--primary-lt);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-weight: 700; font-size: 13px;
  flex-shrink: 0;
}
.user-name { font-size: 12.5px; font-weight: 600; color: var(--txt); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 11px; color: var(--txt-muted); white-space: nowrap; }
.sidebar.collapsed .user-info { display: none; }

/* ── MAIN CONTENT ─────────────────────────────────────────── */
.main-wrap {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--tr);
}
.main-wrap.sb-collapsed { margin-left: var(--sidebar-coll); }

/* ── TOPBAR ──────────────────────────────────────────────── */
.topbar {
  height: var(--header-h);
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px;
  position: sticky; top: 0;
  z-index: 50;
  box-shadow: var(--sh-sm);
}
.topbar-toggle {
  width: 36px; height: 36px;
  border: 1px solid var(--border);
  background: transparent;
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--txt-sec); font-size: 18px;
  transition: background var(--tr);
}
.topbar-toggle:hover { background: var(--bg); }
.topbar-breadcrumb { font-size: 13px; color: var(--txt-sec); flex: 1; }
.topbar-breadcrumb strong { color: var(--txt); }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.topbar-btn {
  height: 34px; padding: 0 12px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  background: transparent;
  font-size: 13px; color: var(--txt-sec);
  display: flex; align-items: center; gap: 6px;
  transition: background var(--tr), border-color var(--tr);
}
.topbar-btn:hover { background: var(--bg); border-color: var(--primary); color: var(--primary); }

/* ── MSG BADGE ───────────────────────────────────────────── */
.msg-badge {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--danger); color: #fff;
  font-size: 10px; font-weight: 700; line-height: 1;
  min-width: 18px; height: 18px;
  padding: 0 4px;
  border-radius: 9px;
  box-shadow: 0 0 0 2px var(--card);
  animation: badgePop .3s cubic-bezier(.34,1.56,.64,1);
  position: relative;
}

/* Nav-item with unread messages: bell shake + highlight */
.msg-has-unread .nav-icon {
  animation: bellShake 1.2s ease infinite;
  color: var(--danger);
}
.msg-has-unread .nav-icon::after {
  content: '🔔';
  position: absolute;
  font-size: 16px;
}
.msg-has-unread {
  background: var(--danger-lt) !important;
  color: var(--danger) !important;
}

@keyframes bellShake {
  0%,100% { transform: rotate(0deg);    }
  10%      { transform: rotate(-12deg);  }
  20%      { transform: rotate(12deg);   }
  30%      { transform: rotate(-10deg);  }
  40%      { transform: rotate(10deg);   }
  50%      { transform: rotate(-6deg);   }
  60%      { transform: rotate(6deg);    }
  70%      { transform: rotate(-3deg);   }
  80%      { transform: rotate(0deg);    }
}

@keyframes badgePop {
  from { transform: scale(0); }
  to   { transform: scale(1); }
}

/* Pulse glow on badge when active */
.msg-badge:not(.hidden) {
  animation: badgePop .3s cubic-bezier(.34,1.56,.64,1),
             badgePulse 2.5s ease 1s infinite;
}
@keyframes badgePulse {
  0%,100% { box-shadow: 0 0 0 2px var(--card); }
  50%     { box-shadow: 0 0 0 4px rgba(220,38,38,.25); }
}

/* Toast info type */
.toast.info { border-left: 4px solid var(--primary); }

/* ── PAGE CONTENT ─────────────────────────────────────────── */
.page-content { padding: 28px 28px; flex: 1; }
.page-header { margin-bottom: 24px; }
.page-title { font-size: 22px; font-weight: 700; color: var(--txt); }
.page-subtitle { font-size: 13px; color: var(--txt-sec); margin-top: 3px; }

/* ── CARDS ───────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-sm);
  overflow: hidden;
}

.panel-loading {
  position: relative;
}

.panel-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, rgba(255,255,255,0) 8%, rgba(255,255,255,.68) 18%, rgba(255,255,255,0) 33%);
  transform: translateX(-100%);
  animation: panelShimmer .55s ease 1;
  pointer-events: none;
}

@keyframes panelShimmer {
  to { transform: translateX(100%); }
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-lt);
  display: flex; align-items: center; justify-content: space-between;
}
.card-title { font-size: 14px; font-weight: 600; color: var(--txt); }
.card-body { padding: 20px; }

/* Group/Lab cards */
.grupos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.grupo-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px;
  box-shadow: var(--sh-sm);
  display: flex; flex-direction: column; gap: 10px;
  transition: box-shadow var(--tr), transform var(--tr), border-color var(--tr);
  position: relative;
  overflow: hidden;
}
.grupo-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
}
.grupo-card:hover {
  box-shadow: var(--sh-md);
  transform: translateY(-2px);
  border-color: var(--primary);
}
.grupo-card-tipo {
  font-size: 15px; font-weight: 900; letter-spacing: .01em;
  color: var(--primary); text-transform: uppercase;
  width: 100%;
  text-align: center;
}
.grupo-card-grupo {
  font-size: 14px;
  font-weight: 700;
  color: var(--txt);
  text-transform: none;
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  align-self: center;
}
.grupo-pill-a {
  color: #1f4db8;
  background: #e8f0ff;
  border-color: #b8ccff;
}
.grupo-pill-b {
  color: #1f7a43;
  background: #e8f7ef;
  border-color: #bde6cd;
}
.grupo-pill-c {
  color: #9a5b00;
  background: #fff6e8;
  border-color: #f5d6a1;
}
.grupo-pill-d {
  color: #a12626;
  background: #fdecec;
  border-color: #f4c1c1;
}
.grupo-pill-default {
  color: var(--txt);
  background: var(--bg);
  border-color: var(--border);
}
.grupo-card-meta {
  font-size: 12px;
  color: var(--txt-sec);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 5px;
  width: 100%;
}
.grupo-card-prog { margin-top: 4px; }
.prog-bar { height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; }
.prog-fill { height: 100%; border-radius: 3px; background: var(--accent); transition: width .4s ease; }
.prog-label { font-size: 11.5px; color: var(--txt-muted); margin-top: 4px; }

/* ── STATS ROW ──────────────────────────────────────────── */
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 20px;
  box-shadow: var(--sh-sm);
  display: flex; flex-direction: column; gap: 6px;
}
.stat-label { font-size: 12px; color: var(--txt-sec); font-weight: 500; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--txt); line-height: 1; }
.stat-sub { font-size: 11.5px; color: var(--txt-muted); }
.stat-card.primary { border-left: 4px solid var(--primary); }
.stat-card.accent  { border-left: 4px solid var(--accent);  }
.stat-card.warning { border-left: 4px solid var(--warning); }
.stat-card.success { border-left: 4px solid var(--success); }

/* ── TABLE ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%; border-collapse: collapse;
  font-size: 13px;
}
thead th {
  background: #F4F7FD;
  font-size: 11.5px; font-weight: 600;
  color: var(--txt-sec); text-transform: uppercase; letter-spacing: .05em;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap; text-align: left;
  position: sticky; top: 0;
}
thead th.center, td.center { text-align: center; }
thead th.sortable-th {
  cursor: pointer;
  user-select: none;
}
thead th.sortable-th::after {
  content: '↕';
  font-size: 10px;
  color: var(--txt-muted);
  margin-left: 6px;
}
thead th.sortable-th.sort-asc::after {
  content: '▲';
  color: var(--primary);
}
thead th.sortable-th.sort-desc::after {
  content: '▼';
  color: var(--primary);
}
tbody tr { border-bottom: 1px solid var(--border-lt); transition: background var(--tr); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #F7F9FE; }
tbody tr.editing-row { background: #FAFCFF; }
td { padding: 9px 12px; color: var(--txt); vertical-align: middle; }
td.muted { color: var(--txt-sec); }

/* Nota inputs inside table */
.nota-input {
  width: 54px;
  padding: 5px 6px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 13px; font-weight: 500; text-align: center;
  color: var(--txt);
  background: var(--card);
  transition: border-color var(--tr), box-shadow var(--tr);
}
.nota-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(41,82,195,.12);
}
.nota-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.prom-cell {
  font-weight: 600; font-size: 13px;
  color: var(--accent);
  min-width: 44px; text-align: center;
  background: var(--accent-lt);
  padding: 4px 8px; border-radius: var(--r-sm);
  display: inline-block;
}
.obs-input {
  width: 100%; min-width: 100px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 12px; color: var(--txt);
  background: var(--card);
}
.obs-input:focus { outline: none; border-color: var(--primary); }

/* ── SEARCH BAR ──────────────────────────────────────────── */
.search-wrap {
  position: relative;
  margin-bottom: 20px;
}
.search-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  align-items: start;
}
.search-input-col {
  min-width: 0;
}
.search-results-col {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--card);
  box-shadow: var(--sh-sm);
  overflow: hidden;
  min-height: 68px;
}
.search-results-head {
  font-size: 12px;
  font-weight: 600;
  color: var(--txt-sec);
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-lt);
  background: #f8fbff;
}
.search-bar {
  display: flex; align-items: center; gap: 10px;
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--r-xl);
  padding: 10px 16px;
  box-shadow: var(--sh-sm);
  transition: border-color var(--tr), box-shadow var(--tr);
}
.search-bar:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(41,82,195,.1);
}
.search-bar svg { color: var(--txt-muted); flex-shrink: 0; }
.search-bar input {
  flex: 1; border: none; background: transparent;
  font-size: 14px; color: var(--txt);
  outline: none;
}
.search-bar input::placeholder { color: var(--txt-muted); }

.search-dropdown {
  position: static;
  background: var(--card);
  border: 0;
  border-radius: 0;
  box-shadow: none;
  max-height: 250px;
  overflow-y: auto;
  z-index: 1;
  display: none;
}
.search-dropdown.open { display: block; }
.search-result-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-lt);
  gap: 12px;
  transition: background var(--tr);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--bg); }
.result-info { flex: 1; min-width: 0; }
.result-code { font-size: 11.5px; color: var(--txt-muted); font-weight: 500; }
.result-name { font-size: 13px; font-weight: 600; color: var(--txt); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.result-name {
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .02em;
}
.result-tag {
  font-size: 11px; font-weight: 600;
  background: var(--warning-lt); color: var(--warning);
  border-radius: 4px; padding: 2px 7px;
}

@media (max-width: 980px) {
  .search-layout {
    grid-template-columns: 1fr;
  }
  .search-results-col {
    min-height: 0;
  }
}

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--r-sm);
  font-size: 13px; font-weight: 600;
  border: 1.5px solid transparent;
  transition: background var(--tr), transform var(--tr), box-shadow var(--tr), border-color var(--tr);
  white-space: nowrap;
}
.btn:hover  { transform: translateY(-1px); box-shadow: var(--sh-sm); }
.btn:active { transform: translateY(0); box-shadow: none; }
.btn:disabled { opacity:.5; cursor:not-allowed; transform:none; box-shadow:none; }

.btn-primary  { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dk); border-color: var(--primary-dk); }

.btn-accent   { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-accent:hover { background: #19998a; }

.btn-outline  { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-lt); }

.btn-ghost    { background: transparent; color: var(--txt-sec); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg); color: var(--txt); border-color: var(--txt-sec); }

.btn-danger   { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #b91c1c; }

.btn-success  { background: var(--success); color: #fff; border-color: var(--success); }
.btn-success:hover { background: #15803d; }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11.5px; border-radius: 5px; }
.btn-icon { padding: 7px; border-radius: var(--r-sm); }

/* ── BADGES ──────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  font-size: 11px; font-weight: 600;
  padding: 2px 9px; border-radius: 20px;
}
.badge-primary { background: var(--primary-lt); color: var(--primary); }
.badge-accent  { background: var(--accent-lt);  color: var(--accent);  }
.badge-success { background: var(--success-lt); color: var(--success); }
.badge-warning { background: var(--warning-lt); color: var(--warning); }
.badge-danger  { background: var(--danger-lt);  color: var(--danger);  }
.badge-muted   { background: var(--border-lt);  color: var(--txt-sec); }

/* ── FORMS ───────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12.5px; font-weight: 600; color: var(--txt-sec); margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 14px; color: var(--txt);
  background: var(--card);
  transition: border-color var(--tr), box-shadow var(--tr);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(41,82,195,.1);
}
.form-control::placeholder { color: var(--txt-muted); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}
input[type="checkbox"]:disabled {
  cursor: not-allowed;
  opacity: .55;
}

/* ── TOASTS ──────────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 1000;
}
.toast {
  min-width: 260px; max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 12px 16px;
  display: flex; align-items: flex-start; gap: 10px;
  box-shadow: var(--sh-lg);
  animation: slideUp .25s ease;
}
.toast.success { border-left: 4px solid var(--success); }
.toast.error   { border-left: 4px solid var(--danger);  }
.toast.warning { border-left: 4px solid var(--warning); }
.toast-icon    { font-size: 18px; flex-shrink: 0; line-height: 1; }
.toast-body    { flex: 1; }
.toast-title   { font-size: 13px; font-weight: 600; color: var(--txt); }
.toast-msg     { font-size: 12px; color: var(--txt-sec); margin-top: 2px; }
@keyframes slideUp { from { opacity:0; transform: translateY(16px); } to { opacity:1; transform: translateY(0); } }

/* ── MODAL ───────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(15,25,50,.45);
  backdrop-filter: blur(3px);
  display: none; align-items: center; justify-content: center;
  z-index: 500;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--card);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-lg);
  width: 100%; max-width: 520px;
  animation: scaleIn .2s ease;
}
@keyframes scaleIn { from { opacity:0; transform: scale(.95); } to { opacity:1; transform: scale(1); } }
.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border-lt);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 15px; font-weight: 700; }
.modal-close { background: none; border: none; font-size: 20px; color: var(--txt-muted); padding: 2px; }
.modal-close:hover { color: var(--txt); }
.modal-body { padding: 20px 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border-lt); display: flex; justify-content: flex-end; gap: 10px; }
.student-app-install{display:grid;justify-items:center;gap:4px;width:154px;margin:8px auto 0;color:var(--primary);font-size:10px;font-weight:700;line-height:1.2;text-align:center;text-decoration:none}.student-app-install img{display:block!important;width:130px!important;height:130px!important;max-width:130px!important;padding:4px;border:1px solid var(--border);border-radius:8px;background:#fff;object-fit:contain}.student-app-install:hover span{text-decoration:underline}

/* ── LOGIN ───────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #1830A0 0%, #2952C3 45%, #20B2A0 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
}
.login-box {
  background: #fff;
  border-radius: var(--r-xl);
  box-shadow: var(--sh-lg);
  padding: 40px 40px;
  width: 100%; max-width: 420px;
}
.login-logo {
  width: 52px; height: 52px;
  background: var(--primary-lt);
  border-radius: var(--r-lg);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; font-weight: 800; color: var(--primary);
  margin: 0 auto 20px;
}
.login-title { font-size: 20px; font-weight: 700; color: var(--txt); text-align: center; }
.login-sub   { font-size: 13px; color: var(--txt-sec); text-align: center; margin-top: 4px; margin-bottom: 28px; }
.login-error {
  background: var(--danger-lt); color: var(--danger);
  border-radius: var(--r-sm); padding: 10px 14px;
  font-size: 13px; margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}

/* ── PROGRESS BAR ────────────────────────────────────────── */
.progress {
  height: 8px; background: var(--border);
  border-radius: 4px; overflow: hidden;
}
.progress-fill {
  height: 100%; border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width .5s ease;
}
.progress-label {
  font-size: 12px; font-weight: 600; color: var(--txt-sec);
  margin-top: 4px; display: flex; justify-content: space-between;
}

/* ── DIVIDER ─────────────────────────────────────────────── */
.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* ── EMPTY STATE ─────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--txt-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 14px; }
.empty-state p { font-size: 14px; }

/* ── TABS ────────────────────────────────────────────────── */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab-btn {
  padding: 9px 16px;
  font-size: 13px; font-weight: 500; color: var(--txt-sec);
  background: transparent; border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--tr), border-color var(--tr);
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }
.tab-btn:hover  { color: var(--txt); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── GRUPO INFO BANNER ───────────────────────────────────── */
.grupo-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #3B6FE0 100%);
  color: #fff;
  border-radius: var(--r-lg);
  padding: 20px 24px;
  margin-bottom: 22px;
  display: flex; flex-wrap: wrap; gap: 20px; align-items: center;
}
.grupo-banner h2 { font-size: 17px; font-weight: 700; }
.grupo-banner .meta-items { display: flex; flex-wrap: wrap; gap: 16px; }
.grupo-banner .meta-item { font-size: 13px; opacity: .88; display: flex; gap: 5px; align-items: center; }
.grupo-banner .meta-label { opacity: .7; font-size: 11.5px; display: block; }

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --sidebar-w: var(--sidebar-coll); }
  .sidebar .nav-label, .sidebar .brand-text, .sidebar .user-info,
  .sidebar .nav-section-label, .sidebar .nav-divider { display: none !important; }
  .sidebar { width: var(--sidebar-coll); }
  .main-wrap { margin-left: var(--sidebar-coll); }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-w) !important;
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .sidebar .nav-label, .sidebar .brand-text, .sidebar .user-info,
  .sidebar .nav-section-label { display: block !important; opacity: 1 !important; width: auto !important; }
  .sidebar .nav-divider { display: block !important; opacity: 1 !important; }
  .main-wrap { margin-left: 0 !important; }
  .page-content { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .grupos-grid { grid-template-columns: 1fr; }
  .modal { max-width: calc(100vw - 32px); }
  .login-box { padding: 28px 22px; }
  .topbar { padding: 0 14px; }
  .overlay-bg {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.4); z-index: 99;
  }
  .overlay-bg.active { display: block; }
}

@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr; }
}

/* ── UTILS ───────────────────────────────────────────────── */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mt-4 { margin-top: 16px; }
.text-sm { font-size: 12.5px; }
.text-muted { color: var(--txt-muted); }
.font-600 { font-weight: 600; }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ── SPLIT LOGIN PORTADAS PREVIEW & REDESIGN ───────────────── */
:root {
  --primary-glow: #3b82f6;
  --secondary-glow: #8b5cf6;
}

.login-page-bg {
  background-color: #050814; /* Darkened page background */
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 20px;
  box-sizing: border-box;
  font-family: 'Outfit', 'Inter', sans-serif;
}

/* CONTAINER DE LA TARJETA FLOTANTE */
.login-card-container {
  width: 100%;
  max-width: 1000px;
  min-height: 600px;
  background-color: #ffffff;
  border-radius: 24px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.45);
  z-index: 10;
  position: relative;
}

/* PANEL IZQUIERDO: DEGRADADO FLUIDO (MESH GRADIENT) Y CANVAS */
.login-visual-panel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #04060f; /* Darkened base background */
  overflow: hidden;
}

/* Efecto de malla líquida / degradado fluido en movimiento */
.login-visual-panel::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 20%, rgba(239, 227, 200, 0.12) 0%, transparent 40%),
              radial-gradient(circle at 75% 65%, rgba(59, 130, 246, 0.18) 0%, transparent 50%),
              radial-gradient(circle at 45% 85%, rgba(139, 92, 246, 0.10) 0%, transparent 45%);
  filter: blur(80px);
  animation: meshFlow 22s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 1;
}

@keyframes meshFlow {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-5%, 8%) rotate(60deg);
  }
  100% {
    transform: translate(5%, -5%) rotate(120deg);
  }
}

.login-visual-panel canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: auto;
  z-index: 2;
}

/* MENÚ SUPERIOR (PANEL IZQUIERDO) */
.visual-top-nav {
  position: absolute;
  top: 40px;
  left: 45px;
  right: 45px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 24px;
  z-index: 999;
  pointer-events: auto;
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  width: 18px;
  margin-right: 8px;
}

.hamburger-icon span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: #ffffff;
  border-radius: 2px;
  transition: opacity 0.25s, transform 0.25s;
}

.hamburger-icon span:nth-child(2) {
  width: 13px;
}

.nav-pill-active {
  background-color: #ffffff;
  color: #0f172a;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background-color 0.25s, transform 0.2s;
}

.nav-pill-active:hover {
  background-color: rgba(255, 255, 255, 0.9);
  transform: translateY(-0.5px);
}

.nav-link {
  color: #ffffff;
  opacity: 0.8;
  font-size: 10px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: opacity 0.2s, transform 0.2s;
}

.nav-link:hover {
  opacity: 1;
  transform: translateY(-0.5px);
}

/* CONTENIDO SUPERIOR (PANEL IZQUIERDO) */
.visual-top-content {
  position: absolute;
  top: 45px;
  left: 0;
  right: 0;
  width: 100%;
  text-align: center;
  z-index: 999;
  pointer-events: none;
  user-select: none;
}

/* CONTENIDO INFERIOR (PANEL IZQUIERDO) */
.visual-bottom-content {
  position: absolute;
  bottom: 45px;
  left: 45px;
  right: 45px;
  z-index: 999;
  text-align: left;
  pointer-events: none;
  user-select: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.welcome-text {
  font-size: 46px;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.sigelab-context {
  display: flex;
  flex-direction: column;
  gap: 3px;
  border-left: 2.5px solid rgba(255, 255, 255, 0.25);
  padding-left: 15px;
}

.sigelab-brand {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  margin: 0;
  letter-spacing: 0.05em;
}

.sigelab-sub {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.sigelab-dep,
.sigelab-univ {
  font-size: 10.5px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.55);
  margin: 0;
  line-height: 1.3;
}

.signup-row {
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.02em;
}

.signup-label {
  color: rgba(255, 255, 255, 0.55);
}

.signup-link {
  color: #ffffff;
  font-weight: 700;
  text-decoration: underline;
  margin-left: 4px;
  pointer-events: auto;
  transition: color 0.2s;
}

.signup-link:hover {
  color: rgba(255, 255, 255, 0.85);
}

/* PANEL DERECHO: FORMULARIO DE INGRESO */
.login-form-panel {
  background-color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 50px 45px;
  position: relative;
}

/* Logotipo superior derecho */
.login-brand-top {
  position: absolute;
  top: 40px;
  right: 45px;
  display: flex;
  align-items: center;
  gap: 10px;
  user-select: none;
}

.brand-text {
  font-family: inherit;
  font-size: 12px;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brand-squares {
  position: relative;
  width: 22px;
  height: 22px;
}

.square-solid {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 14px;
  height: 14px;
  background-color: #7dd3fc;
  border-radius: 4px;
}

.square-outline {
  position: absolute;
  top: 0;
  right: 0;
  width: 14px;
  height: 14px;
  border: 2.5px solid #0ea5e9;
  border-radius: 4px;
  box-sizing: border-box;
  background-color: #ffffff;
}

.login-box-card {
  width: 100%;
  max-width: 320px;
  display: flex;
  flex-direction: column;
}

/* Avatar circular */
.login-avatar-circle {
  width: 84px;
  height: 84px;
  border: 1.5px solid #0f172a;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 36px auto;
  background-color: #ffffff;
}

/* Inputs de estilo pastilla (Pill) */
.input-pill-container {
  position: relative;
  margin-bottom: 16px;
  width: 100%;
}

.form-control-pill {
  width: 100%;
  padding: 13px 48px 13px 26px;
  border: 1.5px solid #0f172a;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  color: #0f172a;
  background: transparent;
  outline: none;
  letter-spacing: 0.12em;
  transition: box-shadow 0.25s, border-color 0.25s;
  box-sizing: border-box;
}

.form-control-pill::placeholder {
  color: rgba(15, 23, 42, 0.4);
  letter-spacing: 0.15em;
  font-weight: 700;
}

.form-control-pill:focus {
  border-color: #1e293b;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

.pill-icon-right {
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.85;
}

/* Botón de login estilo pastilla */
.btn-pill-primary {
  width: 100%;
  padding: 13.5px 20px;
  background-color: #0f172a;
  border: none;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.22em;
  cursor: pointer;
  transition: background-color 0.25s, transform 0.2s, box-shadow 0.2s;
  margin-top: 8px;
  text-transform: uppercase;
  box-shadow: 0 4px 10px rgba(15, 23, 42, 0.1);
}

.btn-pill-primary:hover {
  background-color: #1e293b;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.16);
}

.btn-pill-primary:active {
  transform: translateY(0);
}

/* Enlaces y Checkbox de Recordar */
.login-links-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  font-size: 11px;
}

.remember-me-label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  font-weight: 600;
  color: rgba(15, 23, 42, 0.7);
  user-select: none;
}

.remember-me-label input {
  accent-color: #0f172a;
  width: 13px;
  height: 13px;
  cursor: pointer;
}

.forgot-pass-link {
  color: rgba(15, 23, 42, 0.7);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.forgot-pass-link:hover {
  color: #0f172a;
}

/* Alerta de Error de pastilla */
.login-error-alert-pill {
  background: rgba(239, 68, 68, 0.08);
  border: 1.5px solid rgba(239, 68, 68, 0.3);
  color: #b91c1c;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  margin-bottom: 18px;
  text-align: center;
}

/* Puntos de paginación del pie */
.login-dots-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 45px;
}

.login-dots-footer .dot {
  width: 6px;
  height: 6px;
  background-color: rgba(15, 23, 42, 0.25);
  border-radius: 50%;
  transition: background-color 0.25s, transform 0.25s;
}

.login-dots-footer .dot.active {
  background-color: #0f172a;
  transform: scale(1.2);
}

/* ── DISEÑO ADAPTATIVO (RESPONSIVE) ────────────────────────── */
@media (max-width: 900px) {
  .login-page-bg {
    padding: 15px;
  }

  .login-card-container {
    grid-template-columns: 1fr;
    max-width: 440px;
    min-height: auto;
    border-radius: 20px;
  }

  .login-visual-panel {
    display: none;
  }

  .login-form-panel {
    padding: 45px 30px;
  }

  .login-brand-top {
    display: none !important;
  }

  .login-box-card {
    max-width: 100%;
  }
}