/**
 * Educollab Gen Z Minimal Design System
 * Font: IBM Plex Sans Thai
 * School identity: Siyanuson blue + yellow with modern violet, pink and mint accents
 */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans+Thai:wght@300;400;500;600;700&display=swap');

:root {
  --ec-primary: #3154d9;
  --ec-primary-dark: #173ea5;
  --ec-primary-soft: #eef2ff;
  --ec-violet: #6d5dfb;
  --ec-yellow: #ffca3a;
  --ec-pink: #ff6b9a;
  --ec-mint: #2ec4b6;
  --ec-danger: #e5484d;
  --ec-success: #17a673;
  --ec-bg: #f6f7fb;
  --ec-bg-elevated: #fbfcff;
  --ec-card: rgba(255, 255, 255, .92);
  --ec-card-solid: #ffffff;
  --ec-text: #101828;
  --ec-muted: #667085;
  --ec-border: #e7eaf2;
  --ec-border-strong: #d8deec;
  --ec-radius-xs: .65rem;
  --ec-radius: 1rem;
  --ec-radius-lg: 1.35rem;
  --ec-radius-xl: 1.75rem;
  --ec-shadow-sm: 0 5px 18px rgba(18, 36, 81, .05);
  --ec-shadow: 0 14px 40px rgba(18, 36, 81, .08);
  --ec-shadow-hover: 0 22px 56px rgba(18, 36, 81, .13);
  --ec-ring: 0 0 0 .24rem rgba(49, 84, 217, .14);
}

[data-bs-theme="dark"] {
  --ec-bg: #0b1020;
  --ec-bg-elevated: #10172a;
  --ec-card: rgba(19, 27, 48, .92);
  --ec-card-solid: #131b30;
  --ec-text: #f3f5ff;
  --ec-muted: #a9b2c7;
  --ec-border: #26314d;
  --ec-border-strong: #34415f;
  --ec-primary-soft: rgba(81, 105, 255, .14);
  --ec-shadow-sm: 0 8px 24px rgba(0, 0, 0, .18);
  --ec-shadow: 0 18px 48px rgba(0, 0, 0, .28);
  --ec-shadow-hover: 0 25px 64px rgba(0, 0, 0, .36);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--ec-text);
  background:
    radial-gradient(circle at 8% -8%, rgba(109, 93, 251, .10), transparent 27rem),
    radial-gradient(circle at 96% 6%, rgba(46, 196, 182, .09), transparent 24rem),
    var(--ec-bg);
  font-family: "IBM Plex Sans Thai", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 400;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { color: #fff; background: var(--ec-primary); }
a { color: var(--ec-primary); }
a:hover { color: var(--ec-primary-dark); }
img { max-width: 100%; }
.text-muted { color: var(--ec-muted) !important; }
.bg-body-tertiary { background-color: var(--ec-bg) !important; }

/* ---------- Brand ---------- */
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: .72rem;
  color: var(--ec-text) !important;
  font-weight: 700;
  letter-spacing: -.035em;
}
.brand-mark {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  display: inline-block;
  border-radius: 14px;
  background: url('../img/logo-icon-3d.png') center / contain no-repeat;
  color: transparent !important;
  box-shadow: 0 10px 24px rgba(49, 84, 217, .20);
}
.brand-mark > i { display: none !important; }
.brand-lockup { display: inline-flex; align-items: center; gap: .75rem; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name { font-size: 1.18rem; font-weight: 700; letter-spacing: -.045em; }
.brand-school { margin-top: .2rem; color: var(--ec-muted); font-size: .67rem; font-weight: 500; letter-spacing: .02em; }
.brand-wordmark { width: 216px; max-width: 44vw; height: auto; }

/* ---------- Navigation ---------- */
.navbar {
  min-height: 72px;
  border-bottom: 1px solid color-mix(in srgb, var(--ec-border) 78%, transparent);
  background: color-mix(in srgb, var(--ec-card-solid) 78%, transparent) !important;
  box-shadow: 0 1px 0 rgba(255,255,255,.25);
  backdrop-filter: blur(18px) saturate(145%);
  -webkit-backdrop-filter: blur(18px) saturate(145%);
}
.navbar .nav-link {
  margin: 0 .08rem;
  padding: .58rem .82rem !important;
  color: var(--ec-muted);
  border-radius: .8rem;
  font-size: .92rem;
  font-weight: 500;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}
.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: var(--ec-primary);
  background: var(--ec-primary-soft);
}
.navbar .nav-link:hover { transform: translateY(-1px); }
.navbar-toggler { border: 0; box-shadow: none !important; }
.dropdown-menu {
  padding: .55rem;
  border: 1px solid var(--ec-border);
  border-radius: 1rem;
  background: var(--ec-card-solid);
  box-shadow: var(--ec-shadow);
}
.dropdown-item { padding: .62rem .75rem; border-radius: .7rem; }
.dropdown-item:hover { background: var(--ec-primary-soft); color: var(--ec-primary); }

/* ---------- Buttons ---------- */
.btn {
  min-height: 42px;
  padding: .58rem 1rem;
  border-radius: .82rem;
  font-weight: 600;
  letter-spacing: -.01em;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary {
  --bs-btn-bg: var(--ec-primary);
  --bs-btn-border-color: var(--ec-primary);
  --bs-btn-hover-bg: var(--ec-primary-dark);
  --bs-btn-hover-border-color: var(--ec-primary-dark);
  --bs-btn-active-bg: var(--ec-primary-dark);
  box-shadow: 0 8px 18px rgba(49, 84, 217, .22);
}
.btn-outline-primary {
  --bs-btn-color: var(--ec-primary);
  --bs-btn-border-color: color-mix(in srgb, var(--ec-primary) 55%, var(--ec-border));
  --bs-btn-hover-bg: var(--ec-primary);
  --bs-btn-hover-border-color: var(--ec-primary);
}
.btn-light {
  --bs-btn-bg: var(--ec-card-solid);
  --bs-btn-border-color: var(--ec-border);
  --bs-btn-color: var(--ec-text);
  --bs-btn-hover-bg: var(--ec-primary-soft);
  --bs-btn-hover-color: var(--ec-primary);
  --bs-btn-hover-border-color: color-mix(in srgb, var(--ec-primary) 25%, var(--ec-border));
  box-shadow: none;
}
.btn-sm { min-height: 34px; padding: .38rem .72rem; border-radius: .68rem; }
.rounded-circle.btn { width: 42px; min-width: 42px; padding: 0; display: inline-grid; place-items: center; }

/* ---------- Form controls ---------- */
.form-label { margin-bottom: .42rem; color: var(--ec-text); font-size: .9rem; font-weight: 600; }
.form-control,
.form-select,
.select2-container--default .select2-selection--multiple,
.select2-container--default .select2-selection--single {
  min-height: 45px;
  border: 1px solid var(--ec-border-strong);
  border-radius: .85rem;
  color: var(--ec-text);
  background-color: var(--ec-card-solid);
  box-shadow: none;
}
.form-control::placeholder { color: color-mix(in srgb, var(--ec-muted) 72%, transparent); }
.form-control:focus,
.form-select:focus {
  border-color: color-mix(in srgb, var(--ec-primary) 70%, white);
  color: var(--ec-text);
  background-color: var(--ec-card-solid);
  box-shadow: var(--ec-ring);
}
.input-group > .form-control:first-child { border-radius: .85rem 0 0 .85rem; }
.input-group > .btn:last-child { border-radius: 0 .85rem .85rem 0; }
.select2-container--default .select2-selection--multiple { padding: .3rem .45rem; }
.select2-container--default .select2-selection--multiple .select2-selection__choice {
  border: 0;
  border-radius: 999px;
  background: var(--ec-primary-soft);
  color: var(--ec-primary);
}

/* ---------- Cards ---------- */
.card {
  color: var(--ec-text);
  border: 1px solid color-mix(in srgb, var(--ec-border) 88%, transparent);
  border-radius: var(--ec-radius-lg);
  background: var(--ec-card);
  box-shadow: var(--ec-shadow-sm);
  backdrop-filter: blur(12px);
}
.hover-lift { transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease; }
.hover-lift:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--ec-primary) 23%, var(--ec-border));
  box-shadow: var(--ec-shadow-hover);
}
.card-title, .section-title { letter-spacing: -.035em; }
.section-title { font-weight: 700; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 7.2rem 0 5.5rem;
  background:
    linear-gradient(135deg, rgba(255,255,255,.70), rgba(255,255,255,.20)),
    radial-gradient(circle at 15% 18%, rgba(49, 84, 217, .18), transparent 23rem),
    radial-gradient(circle at 82% 12%, rgba(255, 107, 154, .16), transparent 19rem),
    radial-gradient(circle at 76% 88%, rgba(46, 196, 182, .15), transparent 22rem);
}
[data-bs-theme="dark"] .hero { background: radial-gradient(circle at 15% 18%, rgba(81,105,255,.18), transparent 25rem), radial-gradient(circle at 82% 12%, rgba(255,107,154,.10), transparent 20rem); }
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .42;
  pointer-events: none;
  background-image: linear-gradient(rgba(49,84,217,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(49,84,217,.055) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 86%);
}
.hero .container { position: relative; z-index: 1; }
.hero-title {
  max-width: 900px;
  margin-inline: auto;
  font-size: clamp(2.55rem, 6vw, 5.15rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.065em;
}
.gradient-text {
  color: transparent;
  background: linear-gradient(90deg, var(--ec-primary-dark), var(--ec-violet) 58%, var(--ec-pink));
  background-clip: text;
  -webkit-background-clip: text;
}
.hero p.lead { max-width: 700px; margin-inline: auto; color: var(--ec-muted); }
.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .42rem .75rem;
  color: var(--ec-primary-dark);
  border: 1px solid rgba(49,84,217,.14);
  border-radius: 999px;
  background: rgba(255,255,255,.72);
  box-shadow: var(--ec-shadow-sm);
  font-size: .82rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
}
.hero-chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--ec-mint); box-shadow: 0 0 0 4px rgba(46,196,182,.15); }

/* ---------- Stats ---------- */
.stat-card { padding: 1.35rem; }
.stat-card .h3, .stat-card .h2 { letter-spacing: -.04em; }
.stat-icon {
  width: 50px;
  height: 50px;
  flex: 0 0 50px;
  display: grid;
  place-items: center;
  color: var(--ec-primary);
  border: 1px solid rgba(49,84,217,.09);
  border-radius: 15px;
  background: linear-gradient(145deg, #f2f5ff, #e9efff);
  font-size: 1.25rem;
}
[data-bs-theme="dark"] .stat-icon { background: rgba(81,105,255,.13); }
.admin-kpi { position: relative; overflow: hidden; }
.admin-kpi::after { content: ""; position: absolute; right: -35px; bottom: -45px; width: 120px; height: 120px; border-radius: 50%; background: linear-gradient(135deg, rgba(49,84,217,.11), rgba(109,93,251,.03)); }

/* ---------- Project and member cards ---------- */
.project-cover {
  width: 100%;
  height: 196px;
  object-fit: cover;
  border-radius: var(--ec-radius-lg) var(--ec-radius-lg) 0 0;
  background: linear-gradient(135deg, #edf1ff, #e7faf6);
}
.avatar { width: 44px; height: 44px; object-fit: cover; border: 3px solid var(--ec-card-solid); border-radius: 50%; box-shadow: 0 4px 12px rgba(17,24,39,.10); }
.avatar-lg { width: 96px; height: 96px; }
.avatar-xl { width: 132px; height: 132px; }
.skill-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .34rem .68rem;
  color: var(--ec-primary);
  border: 1px solid rgba(49,84,217,.08);
  border-radius: 999px;
  background: var(--ec-primary-soft);
  font-size: .8rem;
  font-weight: 600;
}
.badge { border-radius: 999px; font-weight: 600; }
.status-open, .status-accepted, .status-approved { color: #087a56; background: rgba(23,166,115,.12); }
.status-closed { color: var(--ec-muted); background: rgba(102,112,133,.12); }
.status-draft, .status-pending { color: #9a6700; background: rgba(255,202,58,.20); }
.status-rejected, .status-suspended { color: #c62f3a; background: rgba(229,72,77,.12); }

/* ---------- Filters / tables ---------- */
.filter-panel { position: sticky; top: 92px; }
.filter-panel .card, .filter-panel.card { box-shadow: none; }
.table { --bs-table-bg: transparent; --bs-table-color: var(--ec-text); --bs-table-border-color: var(--ec-border); }
.table > :not(caption) > * > * { padding: .9rem .8rem; }
.table thead th { color: var(--ec-muted); font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .02em; }
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  color: var(--ec-text) !important;
  border: 1px solid var(--ec-border-strong) !important;
  border-radius: .75rem !important;
  background: var(--ec-card-solid) !important;
}
.pagination .page-link { margin: 0 .14rem; color: var(--ec-primary); border-color: var(--ec-border); border-radius: .65rem !important; background: var(--ec-card-solid); }
.pagination .active > .page-link { border-color: var(--ec-primary); background: var(--ec-primary); }

/* ---------- Dashboard ---------- */
.dashboard-shell { display: grid; grid-template-columns: 272px minmax(0, 1fr); min-height: 100vh; }
.dashboard-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  padding: 1.35rem 1rem;
  border-right: 1px solid var(--ec-border);
  background: color-mix(in srgb, var(--ec-card-solid) 92%, transparent);
  backdrop-filter: blur(16px);
}
.dashboard-main { min-width: 0; padding: 2rem clamp(1rem, 3vw, 2.5rem); }
.sidebar-link {
  display: flex;
  align-items: center;
  gap: .78rem;
  margin-bottom: .26rem;
  padding: .72rem .82rem;
  color: var(--ec-muted);
  border-radius: .82rem;
  text-decoration: none;
  font-size: .91rem;
  font-weight: 500;
  transition: color .2s ease, background .2s ease, transform .2s ease;
}
.sidebar-link i { width: 20px; text-align: center; font-size: 1.05rem; }
.sidebar-link:hover, .sidebar-link.active { color: var(--ec-primary); background: var(--ec-primary-soft); }
.sidebar-link:hover { transform: translateX(2px); }
.sidebar-link.active { font-weight: 600; }

/* ---------- Profile ---------- */
.profile-cover { width: 100%; height: 240px; object-fit: cover; border-radius: var(--ec-radius-lg); }
.profile-avatar-wrap { margin-top: -72px; padding-left: 2rem; }
.profile-avatar { width: 144px; height: 144px; object-fit: cover; border: 7px solid var(--ec-card-solid); border-radius: 50%; box-shadow: var(--ec-shadow); }

/* ---------- Notifications / comments ---------- */
.notification-unread { border-left: 4px solid var(--ec-primary); background: linear-gradient(90deg, rgba(49,84,217,.08), transparent); }
.comment-line { padding-left: 1rem; border-left: 2px solid var(--ec-border); }
.list-group-item { color: var(--ec-text); border-color: var(--ec-border); background: transparent; }

/* ---------- Authentication ---------- */
.auth-page {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 2rem;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 10%, rgba(49,84,217,.18), transparent 28rem),
    radial-gradient(circle at 92% 92%, rgba(255,107,154,.15), transparent 24rem),
    var(--ec-bg);
}
.auth-page::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .35; background-image: radial-gradient(rgba(49,84,217,.18) 1px, transparent 1px); background-size: 24px 24px; mask-image: linear-gradient(black, transparent 75%); }
.auth-card { position: relative; width: min(100%, 620px); padding: clamp(1.25rem, 4vw, 2rem) !important; }
.dropzone { padding: 1.25rem; text-align: center; border: 2px dashed var(--ec-border-strong); border-radius: var(--ec-radius); background: var(--ec-bg-elevated); }

/* ---------- Misc ---------- */
.nav-pills { gap: .35rem; }
.nav-pills .nav-link { color: var(--ec-muted); border-radius: .78rem; font-weight: 600; }
.nav-pills .nav-link.active { color: #fff; background: var(--ec-primary); box-shadow: 0 7px 16px rgba(49,84,217,.20); }
.footer { border-top: 1px solid var(--ec-border); background: color-mix(in srgb, var(--ec-card-solid) 90%, transparent); }
.empty-state { padding: 3rem; text-align: center; }
.empty-state i { color: color-mix(in srgb, var(--ec-muted) 72%, transparent); font-size: 3rem; }
.loading-screen { position: fixed; inset: 0; z-index: 9999; display: grid; place-items: center; background: var(--ec-bg); transition: opacity .3s ease; }
.loading-screen.hidden { opacity: 0; pointer-events: none; }
.skeleton { border-radius: .65rem; background: linear-gradient(90deg, var(--ec-border) 25%, color-mix(in srgb, var(--ec-border) 58%, white) 50%, var(--ec-border) 75%); background-size: 200% 100%; animation: skeleton 1.35s infinite; }
@keyframes skeleton { to { background-position: -200% 0; } }

/* ---------- Responsive ---------- */
@media (max-width: 1199.98px) {
  .navbar .nav-link { padding-inline: .62rem !important; }
}
@media (max-width: 991.98px) {
  .navbar-collapse { margin-top: .75rem; padding: .9rem; border: 1px solid var(--ec-border); border-radius: 1rem; background: var(--ec-card-solid); box-shadow: var(--ec-shadow); }
  .dashboard-shell { display: block; }
  .dashboard-sidebar { position: fixed; left: -292px; top: 0; z-index: 1055; width: 272px; height: 100vh; box-shadow: var(--ec-shadow-hover); transition: left .25s ease; }
  .dashboard-sidebar.show { left: 0; }
  .dashboard-main { padding: 1.2rem; }
  .filter-panel { position: static; }
  .hero { padding: 5rem 0 4rem; }
  .profile-cover { height: 175px; }
  .profile-avatar { width: 116px; height: 116px; }
  .profile-avatar-wrap { margin-top: -58px; padding-left: 1rem; }
}
@media (max-width: 575.98px) {
  .brand-school { display: none; }
  .brand-mark { width: 40px; height: 40px; flex-basis: 40px; }
  .hero-title { letter-spacing: -.052em; }
  .project-cover { height: 168px; }
  .dashboard-main { padding: .8rem; }
  .stat-card { padding: 1rem; }
  .card { border-radius: 1.05rem; }
  .btn { min-height: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}


/* ==========================================================
   Educollab Depth Layer v2 — subtle dimensional Gen Z polish
   Uses the user-selected blue/gold Educollab logo.
   ========================================================== */
:root {
  --ec-depth-1: 0 2px 4px rgba(14, 34, 82, .06), 0 12px 28px rgba(14, 34, 82, .08);
  --ec-depth-2: 0 4px 10px rgba(14, 34, 82, .08), 0 20px 48px rgba(14, 34, 82, .12);
  --ec-depth-3: 0 8px 18px rgba(14, 34, 82, .10), 0 30px 70px rgba(14, 34, 82, .16);
  --ec-highlight: inset 0 1px 0 rgba(255,255,255,.82);
}
[data-bs-theme="dark"] {
  --ec-depth-1: 0 2px 8px rgba(0,0,0,.18), 0 16px 32px rgba(0,0,0,.22);
  --ec-depth-2: 0 6px 14px rgba(0,0,0,.24), 0 24px 54px rgba(0,0,0,.34);
  --ec-depth-3: 0 10px 24px rgba(0,0,0,.30), 0 34px 80px rgba(0,0,0,.42);
  --ec-highlight: inset 0 1px 0 rgba(255,255,255,.07);
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  filter: blur(76px);
  pointer-events: none;
  opacity: .18;
}
body::before { top: 12%; left: -130px; background: #4776ff; }
body::after { right: -140px; bottom: 8%; background: #ffca3a; opacity: .12; }

.brand-logo-full {
  display: block;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 3px 2px rgba(6,35,86,.12)) drop-shadow(0 9px 13px rgba(6,35,86,.10));
  transform: translateZ(0);
  transition: transform .22s ease, filter .22s ease;
}
.brand-logo-full:hover {
  transform: translateY(-1px) scale(1.012);
  filter: drop-shadow(0 4px 3px rgba(6,35,86,.14)) drop-shadow(0 12px 16px rgba(6,35,86,.14));
}
.brand-logo-nav { width: 172px; max-height: 58px; }
.brand-logo-sidebar { width: 190px; max-width: 100%; max-height: 72px; }
.brand-logo-footer { width: 230px; max-width: 78vw; }
.sidebar-brand { min-width: 0; }

.brand-mark {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  border-radius: 16px;
  box-shadow: none;
  filter: drop-shadow(0 5px 4px rgba(6,35,86,.11)) drop-shadow(0 12px 15px rgba(6,35,86,.11));
}

.navbar {
  box-shadow: 0 1px 0 rgba(255,255,255,.7), 0 12px 36px rgba(18,36,81,.055);
}

.card {
  border-color: color-mix(in srgb, var(--ec-border) 82%, white);
  box-shadow: var(--ec-highlight), var(--ec-depth-1);
  transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}
.card:hover { border-color: color-mix(in srgb, var(--ec-primary) 13%, var(--ec-border)); }
.hover-lift:hover { transform: translateY(-7px) scale(1.006); box-shadow: var(--ec-highlight), var(--ec-depth-3); }

.btn-primary {
  background-image: linear-gradient(180deg, #3d63eb 0%, var(--ec-primary) 56%, #2748c6 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 5px 10px rgba(49,84,217,.18), 0 12px 24px rgba(49,84,217,.14);
}
.btn-primary:hover {
  background-image: linear-gradient(180deg, #496def 0%, #3154d9 52%, #1f3fae 100%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.32), 0 7px 14px rgba(49,84,217,.22), 0 16px 30px rgba(49,84,217,.18);
}
.btn-light { box-shadow: inset 0 1px 0 rgba(255,255,255,.74), 0 5px 12px rgba(18,36,81,.055); }

.form-control,
.form-select,
.select2-container--default .select2-selection--multiple,
.select2-container--default .select2-selection--single {
  box-shadow: inset 0 1px 2px rgba(18,36,81,.025), 0 1px 0 rgba(255,255,255,.72);
}
.form-control:focus,
.form-select:focus {
  box-shadow: var(--ec-ring), inset 0 1px 2px rgba(18,36,81,.02), 0 8px 22px rgba(49,84,217,.08);
}

.stat-card { position: relative; overflow: hidden; }
.stat-card::before {
  content: "";
  position: absolute;
  width: 110px;
  height: 110px;
  right: -42px;
  top: -48px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(49,84,217,.11), rgba(109,93,251,.02) 64%, transparent 72%);
}
.stat-icon {
  box-shadow: inset 0 1px 0 rgba(255,255,255,.96), 0 6px 12px rgba(49,84,217,.10), 0 14px 26px rgba(49,84,217,.07);
}

.dashboard-sidebar {
  box-shadow: inset -1px 0 0 rgba(255,255,255,.48), 14px 0 44px rgba(18,36,81,.055);
}
.sidebar-link.active {
  box-shadow: inset 0 1px 0 rgba(255,255,255,.66), 0 6px 14px rgba(49,84,217,.08);
}

.project-cover { box-shadow: inset 0 -1px 0 rgba(14,34,82,.05); }
.avatar { box-shadow: 0 3px 6px rgba(17,24,39,.08), 0 10px 20px rgba(17,24,39,.08); }
.profile-avatar { box-shadow: 0 5px 12px rgba(18,36,81,.12), 0 24px 52px rgba(18,36,81,.16); }

.footer { box-shadow: inset 0 1px 0 rgba(255,255,255,.62), 0 -16px 42px rgba(18,36,81,.035); }
.loading-screen .brand-mark { width: 92px; height: 92px; filter: drop-shadow(0 12px 18px rgba(6,35,86,.16)); }

@media (max-width: 991.98px) {
  .brand-logo-nav { width: 156px; }
  .brand-logo-sidebar { width: 175px; }
}
@media (max-width: 575.98px) {
  .brand-logo-nav { width: 142px; max-height: 52px; }
  .brand-logo-footer { width: 205px; }
  .brand-mark { width: 44px; height: 44px; flex-basis: 44px; }
}

/* =========================================================
   Privacy / Cookie Consent — Educollab v3
   ========================================================= */
.ec-privacy-banner {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1090;
  padding: 18px;
  pointer-events: none;
}
.ec-privacy-card {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 20px 22px;
  border: 1px solid color-mix(in srgb, var(--ec-primary) 14%, var(--ec-border));
  border-radius: 24px;
  background: color-mix(in srgb, var(--ec-card) 94%, transparent);
  backdrop-filter: blur(22px) saturate(130%);
  -webkit-backdrop-filter: blur(22px) saturate(130%);
  box-shadow: 0 24px 70px rgba(15, 32, 76, .20), inset 0 1px 0 rgba(255,255,255,.76);
  pointer-events: auto;
}
.ec-privacy-icon {
  width: 50px;
  height: 50px;
  flex: 0 0 50px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 1.28rem;
  background: linear-gradient(145deg, #3d63eb, #3154d9 52%, #ffb800);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.32), 0 12px 26px rgba(49,84,217,.22);
}
.ec-eyebrow {
  font-size: .72rem;
  letter-spacing: .14em;
  font-weight: 700;
  color: var(--ec-primary);
}
.ec-privacy-fab {
  position: fixed;
  left: 18px;
  bottom: 18px;
  width: 48px;
  height: 48px;
  z-index: 1080;
  border: 1px solid color-mix(in srgb, var(--ec-primary) 14%, var(--ec-border));
  border-radius: 16px;
  background: color-mix(in srgb, var(--ec-card) 94%, transparent);
  color: var(--ec-primary);
  box-shadow: 0 12px 34px rgba(18,36,81,.14), inset 0 1px 0 rgba(255,255,255,.75);
  backdrop-filter: blur(16px);
  transition: transform .2s ease, box-shadow .2s ease;
}
.ec-privacy-fab:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(18,36,81,.18); }
.ec-privacy-modal { border: 1px solid var(--ec-border); border-radius: 26px; background: var(--ec-card); box-shadow: 0 28px 80px rgba(13,28,64,.24); overflow: hidden; }
.ec-cookie-option { padding: 18px; border: 1px solid var(--ec-border); border-radius: 18px; background: color-mix(in srgb, var(--ec-bg) 62%, var(--ec-card)); }
.ec-data-notice { border: 1px solid color-mix(in srgb, var(--ec-primary) 16%, var(--ec-border)); border-radius: 18px; background: color-mix(in srgb, var(--ec-primary) 6%, var(--ec-card)); color: var(--ec-text); }
.ec-cookie-option .form-check-input { width: 2.55rem; height: 1.35rem; cursor: pointer; }
.ec-cookie-option .form-check-input:checked { background-color: var(--ec-primary); border-color: var(--ec-primary); }
[data-bs-theme="dark"] .ec-privacy-card,
[data-bs-theme="dark"] .ec-privacy-modal { box-shadow: 0 28px 80px rgba(0,0,0,.36); }
@media (max-width: 575.98px) {
  .ec-privacy-banner { padding: 10px; }
  .ec-privacy-card { width: 100%; padding: 17px; border-radius: 21px; }
  .ec-privacy-icon { width: 44px; height: 44px; flex-basis: 44px; border-radius: 14px; }
  .ec-privacy-card .btn { flex: 1 1 auto; }
  .ec-privacy-fab { left: 12px; bottom: 12px; }
}