/* ── Reset & Variables ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --teal-50:  #E1F5EE;
  --teal-100: #9FE1CB;
  --teal-200: #5DCAA5;
  --teal-400: #1D9E75;
  --teal-600: #0F6E56;
  --teal-800: #085041;

  --blue-50:  #E6F1FB;
  --blue-100: #B5D4F4;
  --blue-400: #378ADD;
  --blue-600: #185FA5;

  --amber-50:  #FAEEDA;
  --amber-100: #FAC775;
  --amber-400: #BA7517;

  --red-50:  #FCEBEB;
  --red-100: #F7C1C1;
  --red-400: #E24B4A;

  --green-50:  #EAF3DE;
  --green-100: #C0DD97;
  --green-400: #639922;

  --gray-50:  #F1EFE8;
  --gray-100: #D3D1C7;
  --gray-400: #888780;
  --gray-800: #2C2C2A;

  --bg-primary:   #ffffff;
  --bg-secondary: #f5f5f3;
  --bg-tertiary:  #eeede9;
  --text-primary:   #1a1a18;
  --text-secondary: #5f5e5a;
  --text-tertiary:  #888780;
  --border-light: rgba(0,0,0,0.10);
  --border-mid:   rgba(0,0,0,0.18);
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --sidebar-w: 210px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary:   #1c1c1a;
    --bg-secondary: #252522;
    --bg-tertiary:  #2c2c2a;
    --text-primary:   #f0ede8;
    --text-secondary: #a8a7a2;
    --text-tertiary:  #6a6966;
    --border-light: rgba(255,255,255,0.08);
    --border-mid:   rgba(255,255,255,0.14);
  }
}

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* ── Login ─────────────────────────────────────────────── */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  background: var(--bg-tertiary);
}

.login-card {
  background: var(--bg-primary);
  border: 0.5px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.06);
}

.login-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 2rem;
}
.login-logo-icon {
  width: 42px; height: 42px;
  background: var(--teal-400);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 22px;
}
.login-logo-text { font-size: 15px; font-weight: 600; line-height: 1.2; }
.login-logo-sub  { font-size: 12px; color: var(--text-secondary); }

.login-title { font-size: 22px; font-weight: 600; margin-bottom: 4px; }
.login-sub   { font-size: 13px; color: var(--text-secondary); margin-bottom: 1.5rem; }

.role-tabs { display: flex; gap: 8px; margin-bottom: 1.5rem; }
.role-tab {
  flex: 1; padding: 8px;
  border: 0.5px solid var(--border-light);
  border-radius: var(--radius-md);
  background: transparent;
  font-size: 13px; cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s;
}
.role-tab.active {
  background: var(--teal-50);
  border-color: var(--teal-400);
  color: var(--teal-600);
  font-weight: 500;
}

.field-group { margin-bottom: 1rem; }
.field-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.field-input {
  width: 100%; padding: 9px 12px;
  border: 0.5px solid var(--border-mid);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  transition: border-color 0.15s;
}
.field-input:focus { outline: none; border-color: var(--teal-400); }

.login-error {
  font-size: 12px; color: var(--red-400);
  min-height: 18px; margin-bottom: 6px;
}

.btn-primary {
  width: 100%; padding: 10px;
  background: var(--teal-400); color: #fff;
  border: none; border-radius: var(--radius-md);
  font-size: 14px; font-weight: 500;
  cursor: pointer; transition: background 0.15s;
}
.btn-primary:hover { background: var(--teal-600); }

/* ── App Shell ─────────────────────────────────────────── */
.app-shell { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  background: var(--bg-primary);
  border-bottom: 0.5px solid var(--border-light);
  height: 56px; padding: 0 1.5rem;
  display: flex; align-items: center;
  justify-content: space-between;
  position: sticky; top: 0; z-index: 20;
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.topbar-icon {
  width: 32px; height: 32px;
  background: var(--teal-400);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 16px;
}
.topbar-title { font-size: 14px; font-weight: 500; }
.topbar-right  { display: flex; align-items: center; gap: 12px; }
.user-name     { font-size: 13px; color: var(--text-secondary); }
.role-badge {
  font-size: 11px; font-weight: 500;
  padding: 3px 10px; border-radius: 99px;
}
.badge-admin   { background: var(--teal-50);  color: var(--teal-600); }
.badge-student { background: var(--blue-50);  color: var(--blue-600); }
.btn-logout {
  padding: 6px 12px;
  border: 0.5px solid var(--border-mid);
  border-radius: var(--radius-md);
  background: transparent;
  font-size: 13px; cursor: pointer;
  color: var(--text-secondary);
  transition: background 0.15s;
}
.btn-logout:hover { background: var(--bg-secondary); }

/* ── Layout ────────────────────────────────────────────── */
.layout {
  display: flex;
  flex: 1;
  min-height: calc(100vh - 56px);
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-primary);
  border-right: 0.5px solid var(--border-light);
  padding: 1rem 0;
  flex-shrink: 0;
  position: sticky;
  top: 56px;
  height: calc(100vh - 56px);
  overflow-y: auto;
}

.nav-section {
  font-size: 10px; letter-spacing: 0.07em;
  color: var(--text-tertiary);
  padding: 1rem 1.25rem 0.4rem;
  text-transform: uppercase;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 1.25rem;
  font-size: 13px; cursor: pointer;
  color: var(--text-secondary);
  border-left: 2px solid transparent;
  transition: all 0.12s;
}
.nav-item:hover  { background: var(--bg-secondary); color: var(--text-primary); }
.nav-item.active {
  color: var(--teal-600);
  border-left-color: var(--teal-400);
  background: var(--teal-50);
  font-weight: 500;
}
.nav-item i { font-size: 16px; }

.main {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

/* ── Page header ───────────────────────────────────────── */
.page-header { margin-bottom: 1.5rem; }
.page-title  { font-size: 20px; font-weight: 600; }
.page-sub    { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }

/* ── Stats grid ────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 1rem;
}
.stat-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.stat-value { font-size: 26px; font-weight: 600; }
.stat-teal  { color: var(--teal-400); }
.stat-blue  { color: var(--blue-400); }
.stat-amber { color: var(--amber-400); }
.stat-green { color: var(--green-400); }

/* ── Cards ─────────────────────────────────────────────── */
.card {
  background: var(--bg-primary);
  border: 0.5px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
  overflow-x: auto;
}
.card-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.card-title { font-size: 15px; font-weight: 500; }

/* ── Buttons ───────────────────────────────────────────── */
.btn {
  padding: 7px 14px;
  border-radius: var(--radius-md);
  font-size: 13px; cursor: pointer;
  border: 0.5px solid var(--border-mid);
  background: transparent;
  color: var(--text-primary);
  transition: background 0.12s;
  white-space: nowrap;
}
.btn:hover { background: var(--bg-secondary); }
.btn-teal  { background: var(--teal-400); color: #fff; border-color: var(--teal-400); }
.btn-teal:hover { background: var(--teal-600); border-color: var(--teal-600); }
.btn-danger { background: var(--red-50); color: var(--red-400); border-color: var(--red-100); }
.btn-danger:hover { background: var(--red-100); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Filters ───────────────────────────────────────────── */
.filters { display: flex; gap: 8px; margin-bottom: 1rem; flex-wrap: wrap; }
.filter-input {
  padding: 7px 12px;
  border: 0.5px solid var(--border-mid);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
}
.filter-input:focus { outline: none; border-color: var(--teal-400); }

/* ── Table ─────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 520px; }
th {
  text-align: left; padding: 8px 12px;
  color: var(--text-secondary); font-weight: 500;
  border-bottom: 0.5px solid var(--border-light);
  font-size: 12px; white-space: nowrap;
}
td {
  padding: 10px 12px;
  border-bottom: 0.5px solid var(--border-light);
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg-secondary); }

/* ── Tags ──────────────────────────────────────────────── */
.tag {
  display: inline-block; padding: 2px 9px;
  border-radius: 99px; font-size: 11px; font-weight: 500;
  white-space: nowrap;
}
.tag-deportivo { background: var(--blue-50);  color: var(--blue-600); }
.tag-cultural  { background: var(--amber-50); color: var(--amber-400); }
.tag-academico { background: var(--teal-50);  color: var(--teal-600); }
.tag-social    { background: var(--green-50); color: var(--green-400); }
.tag-active    { background: var(--green-50); color: var(--green-400); }
.tag-inactive  { background: var(--red-50);   color: var(--red-400); }

/* ── Modal ─────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.40);
  z-index: 50;
  display: flex; align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  width: 100%; max-width: 520px;
  max-height: 90vh; overflow-y: auto;
  border: 0.5px solid var(--border-light);
}
.modal-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}
.modal-title  { font-size: 16px; font-weight: 500; }
.modal-close  {
  background: none; border: none;
  cursor: pointer; color: var(--text-secondary);
  font-size: 22px; line-height: 1; padding: 2px;
}
.modal-footer {
  display: flex; gap: 8px;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* ── Forms ─────────────────────────────────────────────── */
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-group { margin-bottom: 1rem; }
.form-label {
  font-size: 12px; color: var(--text-secondary);
  display: block; margin-bottom: 5px;
}
.form-control {
  width: 100%; padding: 8px 10px;
  border: 0.5px solid var(--border-mid);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 13px;
  transition: border-color 0.12s;
}
.form-control:focus { outline: none; border-color: var(--teal-400); }

/* ── Alert ─────────────────────────────────────────────── */
.alert {
  padding: 10px 14px; border-radius: var(--radius-md);
  font-size: 13px; margin-bottom: 1rem;
  display: flex; align-items: center; gap: 8px;
}
.alert-success {
  background: var(--green-50);
  color: var(--green-400);
  border: 0.5px solid var(--green-100);
}
.alert-danger {
  background: var(--red-50);
  color: var(--red-400);
  border: 0.5px solid var(--red-100);
}

/* ── Student banner ────────────────────────────────────── */
.hours-banner {
  background: var(--teal-50);
  border: 0.5px solid var(--teal-100);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 1.5rem;
}
.hours-num   { font-size: 38px; font-weight: 600; color: var(--teal-600); line-height: 1; }
.hours-label { font-size: 13px; color: var(--teal-600); }

/* ── Empty state ───────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
}
.empty-state i { font-size: 40px; display: block; margin-bottom: 1rem; opacity: 0.4; }

/* ── Checkbox list ─────────────────────────────────────── */
.check-list label {
  display: flex; align-items: center;
  gap: 8px; font-size: 13px;
  padding: 5px 0; cursor: pointer;
}

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 680px) {
  .sidebar { display: none; }
  .topbar-title { display: none; }
  .form-row { grid-template-columns: 1fr; }
}