/* ============================================================
   openEdu — Main Stylesheet
   Design: Royal-Blue Glassmorphism (openChurch shell)
   Primary: #1e3a8a  Secondary: #93c5fd  Accent: #ea580c
   ============================================================ */

:root {
  color-scheme: dark;
  /* Defaults — overridden at runtime by applyThemeColors() */
  --color-primary: #1e3a8a;
  --color-primary-dark: #162d6b;
  --color-primary-light: rgba(30, 58, 138, 0.12);
  --color-secondary: #0284c7;
  --color-accent: #ea580c;
  /* Aliases so all existing CSS picks up the dynamic values */
  --brand-primary: var(--color-primary);
  --brand-primary-mid: var(--color-primary-dark);
  --brand-secondary: #93c5fd;
  --brand-accent: var(--color-accent);
  --bg-base: color-mix(in srgb, var(--color-primary) 5%, #050505);
  --bg-surface: color-mix(in srgb, var(--color-primary) 10%, #111111);
  --bg-panel: rgba(10, 20, 50, 0.84);
  --bg-panel-soft: rgba(10, 20, 50, 0.62);
  --border-soft: rgba(147, 197, 253, 0.12);
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --shadow-panel: 0 24px 80px rgba(2, 6, 23, 0.45);
  --app-background-image: none;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  min-height: 100vh;
  color: var(--text-main);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-base) 92%, transparent), color-mix(in srgb, var(--bg-surface) 96%, transparent)),
    radial-gradient(circle at top, color-mix(in srgb, var(--color-primary) 30%, transparent), transparent 28%),
    radial-gradient(circle at bottom right, color-mix(in srgb, var(--color-primary) 22%, transparent), transparent 35%),
    var(--app-background-image),
    linear-gradient(180deg, var(--bg-base) 0%, var(--bg-surface) 100%);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

img { max-width: 100%; display: block; }

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

/* ---- Utilities ---- */
.hidden { display: none !important; }
.full-width { width: 100%; }

.stack-sm > * + * { margin-top: 0.75rem; }
.stack-md > * + * { margin-top: 1rem; }
.stack-lg > * + * { margin-top: 1.25rem; }
.stack-xl > * + * { margin-top: 1.5rem; }

/* ---- Panels ---- */
.panel {
  border: 1px solid var(--border-soft);
  background: var(--bg-panel);
  box-shadow: var(--shadow-panel);
  backdrop-filter: blur(20px);
}
.panel-soft {
  border: 1px solid var(--border-soft);
  background: var(--bg-panel-soft);
  backdrop-filter: blur(14px);
}

/* ---- Buttons ---- */
.btn-primary, .btn-secondary, .icon-button, .nav-button, .quick-link {
  transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease, color 0.18s ease;
}
.btn-primary:hover, .btn-secondary:hover, .icon-button:hover,
.nav-button:hover, .quick-link:hover { transform: translateY(-1px); }

.btn-primary {
  border: none;
  border-radius: 1rem;
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: #ffffff;
  font-weight: 700;
  padding: 0.9rem 1.2rem;
  box-shadow: 0 12px 32px color-mix(in srgb, var(--color-primary) 35%, transparent);
}

.btn-secondary {
  border: 1px solid rgba(147, 197, 253, 0.18);
  border-radius: 1rem;
  background: rgba(147, 197, 253, 0.06);
  color: var(--text-main);
  font-weight: 600;
  padding: 0.9rem 1.1rem;
}

.inline-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.form-actions { display: grid; gap: 0.75rem; }
.form-actions--inline { align-self: end; }

.form-status {
  margin: 0;
  color: var(--brand-secondary);
  font-size: 0.82rem;
  line-height: 1.5;
}

.import-tools { display: grid; gap: 0.65rem; }

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid rgba(147, 197, 253, 0.16);
  background: rgba(10, 20, 50, 0.86);
  color: #ffffff;
}

/* ---- Form Fields ---- */
.field, .select, .textarea {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(147, 197, 253, 0.14);
  background: rgba(10, 20, 50, 0.66);
  color: var(--text-main);
  padding: 0.85rem 1rem;
}
.field--color { height: 3.4rem; padding: 0.4rem; }
.field:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--brand-primary) 64%, #93c5fd 30%);
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.22);
}
.field::placeholder, .textarea::placeholder { color: #475569; }

/* ---- Typography ---- */
.form-label, .eyebrow, .metric-card__label {
  display: block;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}
.form-label, .metric-card__label {
  margin-bottom: 0.55rem;
  color: var(--text-muted);
}
.eyebrow { color: var(--brand-secondary); }

.hero-title {
  margin: 0.15rem 0 0;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.05;
  color: #ffffff;
}
.hero-title--small { font-size: clamp(1.8rem, 3vw, 2.6rem); }

.section-title {
  margin: 0.25rem 0 0;
  font-size: clamp(1.4rem, 2vw, 2rem);
  line-height: 1.15;
  color: #ffffff;
}
.section-copy, .item-copy {
  margin: 0.4rem 0 0;
  color: var(--text-muted);
  line-height: 1.6;
}
.item-title {
  display: block;
  color: #ffffff;
  font-weight: 700;
}

/* ---- Alerts ---- */
.alert { border-radius: 1rem; padding: 0.85rem 1rem; }
.alert--danger {
  border: 1px solid rgba(244, 63, 94, 0.35);
  background: rgba(190, 24, 93, 0.12);
  color: #ffe4e6;
}

.info-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-radius: 1.25rem;
  border: 1px solid var(--border-soft);
  background: rgba(255, 255, 255, 0.04);
  padding: 1rem 1.1rem;
  color: var(--text-main);
}

.inline-metric {
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
}

/* ---- Auth Screen ---- */
.auth-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 480px);
}
.auth-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(2rem, 5vw, 4rem);
}
.auth-hero__image {
  width: 100%;
  height: 100%;
  min-height: 26rem;
  object-fit: cover;
  border-radius: 2rem;
  border: 1px solid var(--border-soft);
}
.auth-hero__card {
  position: absolute;
  right: clamp(1.5rem, 4vw, 3rem);
  bottom: clamp(1.5rem, 4vw, 3rem);
  max-width: 22rem;
  border-radius: 2rem;
  padding: 1.4rem;
}
.auth-panel { display: grid; place-items: center; padding: 2rem; }
.auth-panel__card {
  width: min(100%, 29rem);
  border-radius: 2rem;
  padding: 2rem;
}

.brand-lockup { display: flex; align-items: center; gap: 1rem; }
.brand-lockup__logo, .sidebar__logo {
  width: 4rem;
  height: 4rem;
  border-radius: 1.3rem;
  object-fit: cover;
  border: 1px solid rgba(147, 197, 253, 0.16);
  background: rgba(147, 197, 253, 0.07);
  padding: 0.5rem;
}

/* ---- App Shell ---- */
.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  position: relative;
}

.mobile-nav-overlay,
.mobile-nav-toggle,
.mobile-nav-close,
.mobile-footer-nav { display: none; }

/* ---- Sidebar ---- */
.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: 1.4rem;
}
.sidebar__brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(147, 197, 253, 0.1);
}
.sidebar__title, .sidebar__user { margin: 0; color: #ffffff; }
.sidebar__nav { display: grid; gap: 0.55rem; margin-top: 1.4rem; }
.sidebar__footer {
  margin-top: auto;
  border-radius: 1.6rem;
  border: 1px solid rgba(147, 197, 253, 0.1);
  background: rgba(255, 255, 255, 0.04);
  padding: 1rem;
}

.nav-button {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid transparent;
  border-radius: 1rem;
  background: transparent;
  color: #94a3b8;
  text-align: left;
}
.nav-button.is-active {
  border-color: color-mix(in srgb, var(--color-primary) 60%, transparent);
  background: color-mix(in srgb, var(--color-primary) 85%, transparent);
  color: #ffffff;
}

/* ---- Main Content ---- */
.main-content { padding: 1.4rem; }

/* ---- Mobile Footer Nav ---- */
.mobile-footer-nav {
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: max(1rem, env(safe-area-inset-bottom));
  z-index: 35;
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 0.65rem calc(0.55rem + env(safe-area-inset-bottom));
  border-radius: 1.8rem;
  background: linear-gradient(180deg, rgba(10, 20, 50, 0.94), rgba(10, 20, 50, 0.98));
  box-shadow: 0 24px 60px rgba(2, 6, 23, 0.46);
}
.mobile-footer-nav__inner {
  display: flex;
  align-items: end;
  justify-content: center;
  gap: 0.45rem;
  width: 100%;
}
.mobile-footer-nav__button {
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 0.35rem;
  border: 1px solid transparent;
  border-radius: 1.15rem;
  background: transparent;
  color: #94a3b8;
  min-width: 3.8rem;
  padding: 0.65rem 0.45rem;
  text-align: center;
  flex: 1 1 0;
}
.mobile-footer-nav__button span:last-child {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.mobile-footer-nav__button.is-active {
  border-color: color-mix(in srgb, var(--color-primary) 60%, transparent);
  background: color-mix(in srgb, var(--color-primary) 85%, transparent);
  color: #ffffff;
}
.mobile-footer-nav__button--primary {
  position: relative;
  min-width: 4.4rem;
  min-height: 4.4rem;
  margin-top: -1.6rem;
  border-radius: 1.5rem;
  background: linear-gradient(180deg, var(--color-primary-dark), var(--color-primary));
  color: #ffffff;
  box-shadow: 0 18px 32px color-mix(in srgb, var(--color-primary) 42%, transparent);
}
.mobile-footer-nav__button--primary.is-active {
  border-color: rgba(147, 197, 253, 0.22);
  background: linear-gradient(180deg, var(--color-primary-dark), var(--color-primary));
}
.mobile-footer-nav__button--more { max-width: 4.2rem; }
.mobile-footer-nav__inner--compact .mobile-footer-nav__button { max-width: 5.25rem; }

/* ---- Page Header ---- */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-radius: 1.75rem;
  padding: 1.2rem 1.4rem;
}
.page-header__main { display: flex; align-items: center; gap: 1rem; }

.date-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(147, 197, 253, 0.1);
  background: rgba(10, 20, 50, 0.92);
  padding: 0.8rem 1rem;
  color: #ffffff;
}

.page-section { margin-top: 1.5rem; }

/* ---- Views ---- */
.view:not(.is-active) { display: none !important; }
.view.is-active { display: block; }
.view.is-active.two-column-grid,
.view.is-active.projection-grid,
.view.is-active.settings-layout { display: grid; }

/* ---- Cards ---- */
.section-panel, .metric-card, .member-card, .student-card,
.list-item, .empty-state, .preview-card,
.asset-card, .backup-meta-card, .permission-card, .checkbox-pill {
  border: 1px solid var(--border-soft);
  background: rgba(147, 197, 253, 0.03);
  border-radius: 1.75rem;
}
.section-panel { padding: 1.4rem; }

/* ---- Grids ---- */
.metric-grid, .two-column-grid, .projection-grid, .settings-layout,
.form-grid, .button-grid, .button-row, .brand-assets-grid,
.backup-meta-grid, .permissions-grid, .permission-list, .info-list {
  display: grid;
  gap: 1rem;
}
.metric-grid--five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.metric-grid--four  { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.two-column-grid    { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.projection-grid    { grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.8fr); }
.settings-layout    { grid-template-columns: 1fr; max-width: 48rem; margin-left: auto; margin-right: auto; }
.form-grid--two   { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid--three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid--four  { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.form-grid--five  { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.form-grid__action, .inline-form__action { align-self: end; }
.inline-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: end;
}
.button-grid--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.button-row { grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); }
.brand-assets-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.backup-meta-grid  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.permissions-grid  { grid-template-columns: 1fr; max-width: 48rem; margin-left: auto; margin-right: auto; }
.permission-list, .info-list { gap: 0.75rem; }

/* ---- Metric Cards ---- */
.metric-card { padding: 1.3rem; cursor: pointer; transition: transform 0.15s ease; }
.metric-card:hover { transform: translateY(-2px); border-color: rgba(59, 130, 246, 0.35); }
.metric-card__value {
  margin: 0.75rem 0 0;
  font-size: clamp(1.9rem, 3vw, 2.8rem);
  font-weight: 800;
  color: #ffffff;
}
.metric-card__value--success { color: #a7f3d0; }
.metric-card__value--danger  { color: #fecdd3; }
.metric-card__value--accent  { color: #fdba74; }
.metric-card__value--info    { color: #bae6fd; }

/* ---- Section Header ---- */
.section-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; }
.section-header--stack-mobile { align-items: end; }
.header-search { width: min(100%, 20rem); }

/* ---- Student / Member Card ---- */
.student-card, .member-card {
  position: relative;
  padding: 1.2rem;
  display: grid;
  gap: 1rem;
  grid-template-columns: 4rem minmax(0, 1fr) auto;
  align-items: center;
}
.student-card__avatar, .member-card__avatar {
  width: 4rem;
  height: 4rem;
  border-radius: 1.2rem;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: rgba(30, 58, 138, 0.85);
  color: #ffffff;
  font-weight: 800;
  font-size: 1.3rem;
}
.student-card__avatar img, .member-card__avatar img {
  width: 100%; height: 100%; object-fit: cover;
}

.record-actions { display: inline-flex; align-items: center; gap: 0.45rem; }

/* ---- List Items ---- */
.list-item {
  width: 100%;
  display: block;
  padding: 1rem;
  text-align: left;
  cursor: pointer;
}
.list-item:hover {
  border-color: rgba(147, 197, 253, 0.18);
  background: rgba(147, 197, 253, 0.06);
}

/* ---- Empty State ---- */
.empty-state { padding: 2rem; text-align: center; color: var(--text-muted); }

/* ---- Tables ---- */
.table-shell { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td {
  padding: 0.95rem 1rem;
  border-bottom: 1px solid rgba(147, 197, 253, 0.07);
  text-align: left;
  vertical-align: top;
}
.data-table th {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: #94a3b8;
}
.table-empty { padding: 2rem; text-align: center; color: var(--text-muted); }

/* ---- Badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.3rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
}
.badge--success { background: rgba(5, 46, 22, 0.9);  color: #ecfdf5; }
.badge--danger  { background: rgba(76, 5, 25, 0.92);  color: #fff1f2; }
.badge--info    { background: rgba(2, 42, 90, 0.9);   color: #bae6fd; }
.badge--warning { background: rgba(60, 45, 5, 0.9);   color: #fef9c3; }
.badge--accent  { background: rgba(90, 30, 5, 0.9);   color: #ffedd5; }

/* Grade badges */
.grade-a  { background: rgba(5, 46, 22, 0.85); color: #86efac; }
.grade-b  { background: rgba(2, 42, 90, 0.85); color: #93c5fd; }
.grade-c  { background: rgba(60, 45, 5, 0.85); color: #fde68a; }
.grade-d  { background: rgba(90, 30, 5, 0.85); color: #fdba74; }
.grade-f  { background: rgba(76, 5, 25, 0.85); color: #fca5a5; }

/* ---- Divider ---- */
.divider {
  height: 1px;
  background: var(--border-soft);
  margin: 0.75rem 0;
}

/* ---- Quick Links ---- */
.quick-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.1rem;
  border-radius: 1.25rem;
  border: 1px solid var(--border-soft);
  background: rgba(147, 197, 253, 0.04);
  color: var(--text-main);
  width: 100%;
  text-align: left;
}
.quick-link:hover {
  border-color: rgba(59, 130, 246, 0.4);
  background: rgba(30, 58, 138, 0.2);
}

/* ---- Avatar Preview ---- */
.avatar-preview {
  width: 4rem;
  height: 4rem;
  border-radius: 1.2rem;
  object-fit: cover;
  border: 1px solid rgba(147, 197, 253, 0.12);
}
.asset-preview {
  width: 100%;
  height: 8rem;
  object-fit: cover;
  border-radius: 1.2rem;
}
.asset-card { padding: 1rem; display: grid; gap: 0.75rem; }
.backup-meta-card {
  padding: 1rem;
  display: grid;
  gap: 0.3rem;
}
.backup-meta-card strong { color: #ffffff; font-size: 1.1rem; }

/* ---- Permissions ---- */
.permission-card { padding: 1.2rem; display: grid; gap: 0.75rem; }
.permission-card__title { color: #ffffff; font-weight: 700; margin: 0; }
.permission-card__copy { color: var(--text-muted); font-size: 0.84rem; margin: 0; }

.checkbox-pill {
  padding: 0.75rem 1rem;
  display: flex;
  gap: 0.75rem;
  cursor: pointer;
}
.checkbox-pill input[type=checkbox] { accent-color: var(--brand-primary); margin-top: 0.15rem; }
.checkbox-pill--locked { opacity: 0.6; cursor: not-allowed; }
.checkbox-pill__title { display: block; color: #ffffff; font-weight: 600; font-size: 0.88rem; }
.checkbox-pill__copy { display: block; color: var(--text-muted); font-size: 0.78rem; }

/* ---- Modal ---- */
.modal-container {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(6px);
}
.modal-content {
  position: relative;
  width: min(100%, 36rem);
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 2rem;
  border: 1px solid var(--border-soft);
  background: var(--bg-panel);
  box-shadow: var(--shadow-panel);
  padding: 1.8rem;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.2rem;
}
.modal-title { margin: 0; color: #ffffff; font-size: 1.2rem; }
.modal-close { background: transparent; border: none; color: var(--text-muted); font-size: 1.2rem; }

/* ---- Toast ---- */
.toast-container {
  position: fixed;
  bottom: 5.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1.2rem;
  border-radius: 999px;
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 600;
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: auto;
}
.toast.success { background: rgba(5, 46, 22, 0.95); }
.toast.error   { background: rgba(76, 5, 25, 0.95); }
.toast.warning { background: rgba(60, 45, 5, 0.95); }
.toast.info    { background: rgba(2, 42, 90, 0.95); }

/* ---- Media field ---- */
.media-field { display: flex; align-items: center; gap: 1rem; }

/* ---- Splash Screen ---- */
.splash-screen {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #020617 0%, #0f172a 60%, #0d2060 100%);
  transition: opacity 0.5s ease;
}
.splash-screen.fade-out { opacity: 0; }
.splash-content { text-align: center; }
.splash-icon {
  width: 5rem;
  height: 5rem;
  margin: 0 auto 1.2rem;
  border-radius: 1.5rem;
  background: linear-gradient(135deg, #1e40af, #1e3a8a);
  display: grid;
  place-items: center;
  font-size: 2.2rem;
  color: #ffffff;
  box-shadow: 0 20px 50px rgba(30, 58, 138, 0.5);
}
.splash-title {
  font-size: 2.4rem;
  font-weight: 900;
  color: #ffffff;
  margin: 0 0 0.3rem;
  letter-spacing: -0.03em;
}
.splash-subtitle { color: var(--brand-secondary); font-weight: 600; margin: 0 0 1.5rem; }
.splash-loader {
  width: 3rem;
  height: 3px;
  background: rgba(147, 197, 253, 0.25);
  border-radius: 999px;
  margin: 1.2rem auto 0;
  overflow: hidden;
}
.splash-loader::after {
  content: '';
  display: block;
  height: 100%;
  width: 40%;
  background: var(--brand-secondary);
  border-radius: 999px;
  animation: slide-loader 1.2s ease-in-out infinite;
}
@keyframes slide-loader {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ---- Install Prompt ---- */
.install-prompt {
  position: fixed;
  bottom: 5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 150;
  width: min(calc(100vw - 2rem), 24rem);
}
.install-prompt-content {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.2rem;
  border-radius: 1.5rem;
  border: 1px solid var(--border-soft);
  background: var(--bg-panel);
  box-shadow: var(--shadow-panel);
}
.install-icon {
  width: 3rem; height: 3rem;
  border-radius: 1rem;
  background: linear-gradient(135deg, #1e40af, #1e3a8a);
  display: grid; place-items: center;
  color: white; font-size: 1.2rem;
  flex-shrink: 0;
}
.install-text { flex: 1; }
.install-text h3 { margin: 0 0 0.2rem; color: white; font-size: 0.9rem; font-weight: 700; }
.install-text p  { margin: 0; color: var(--text-muted); font-size: 0.78rem; }
.install-actions { display: flex; gap: 0.5rem; flex-shrink: 0; }

/* ---- Attendance dots area ---- */
.att-dot { display: inline-block; width: 0.7rem; height: 0.7rem; border-radius: 50%; }
.att-dot--present { background: #4ade80; }
.att-dot--absent  { background: #f87171; }
.att-dot--late    { background: #fbbf24; }

/* ---- Inline form actions ---- */
.form-row { display: flex; gap: 0.75rem; align-items: end; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-hero { display: none; }

  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 50;
    width: 18rem;
    transform: translateX(-100%);
    transition: transform 0.26s ease;
  }
  .sidebar.is-open { transform: translateX(0); }

  .mobile-nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 45;
    background: rgba(2, 6, 23, 0.6);
    backdrop-filter: blur(4px);
  }
  .mobile-nav-toggle, .mobile-nav-close { display: inline-grid; }
  .mobile-footer-nav { display: flex; }
  
  .main-content { padding: 0.75rem 0.75rem calc(8rem + env(safe-area-inset-bottom)); }
  .page-header { border-radius: 1.25rem; }

  .metric-grid--five  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-grid--four  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metric-grid--three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .two-column-grid    { grid-template-columns: 1fr; }
  .settings-layout    { grid-template-columns: 1fr; }
  .projection-grid    { grid-template-columns: 1fr; }
  .form-grid--five    { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid--three   { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .brand-assets-grid  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .backup-meta-grid   { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .student-card, .member-card { grid-template-columns: 3.2rem minmax(0,1fr) auto; }
}

@media (max-width: 540px) {
  .metric-grid--five  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .form-grid--three   { grid-template-columns: 1fr; }
  .form-grid--four    { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-header--stack-mobile { flex-direction: column; align-items: stretch; }
  .button-row { grid-template-columns: 1fr; }
}

/* ---- Icon resolver ---- */
[data-icon] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.15rem;
  height: 1.15rem;
  vertical-align: middle;
}
[data-icon] svg { width: 100%; height: 100%; }

/* ---- Phosphor icon font integration ---- */
.ph { display: inline-flex; }