/* ============================================================
   codencode.my LMS — "admin-match" light skin
   Loaded last; overrides the base <style> in lms.html so the
   student + teacher portal shares the admin panel's look & feel.
   ============================================================ */

/* ---- 1. Design tokens (force light, admin palette) --------- */
:root,
[data-theme="dark"],
[data-theme="light"] {
  --bg-page: #F0F1F3;
  --bg: #F0F1F3;
  --bg-base: #F0F1F3;
  --bg-grad: #F0F1F3;
  --bg-raised: #ffffff;
  --bg-hover: #F7FAF8;
  --bg-active: #E6F6EC;
  --surface: #ffffff;
  --surface2: #FAFCFB;
  --surface3: #E6F6EC;
  --surface-solid: #ffffff;
  --border: #ECEDEF;
  --border2: #DDE9E3;
  --border3: #C8DDD3;
  --border-strong: #B8D2C7;
  --text: #14181B;
  --text-1: #14181B;
  --text-muted: #8A8F98;
  --text-2: #8A8F98;
  --text-dim: #B7BBC2;
  --text-3: #B7BBC2;
  --text-faint: #CDD1D6;
  --text-4: #CDD1D6;
  --accent: #0F9D58;
  --accent-bright: #0F9D58;
  --accent-mid: #0B7A43;
  --accent-dim: #E6F6EC;
  --accent-glow: rgba(15, 157, 88, 0.12);
  --cyan: #0F9D58;
  --cyan-dim: #E6F6EC;
  --cyan-glow: rgba(15, 157, 88, 0.14);
  --green: #0F9D58;
  --green2: #12A862;
  --green3: #0B7A43;
  --green-dim: #E6F6EC;
  --green-mid: #CFEEDB;
  --gold: #B9660B;
  --gold2: #B9660B;
  --gold-dim: #fff2d7;
  --gold-mid: #ffe2a5;
  --red: #C0392B;
  --red-dim: #FBEAE8;
  --orange: #B9660B;
  --orange-dim: #fff2d7;
  --blue: #3197b6;
  --blue-dim: #e6f5fa;
  --purple: #8368bd;
  --purple-dim: #f0ebfb;
  --glass-bg: #ffffff;
  --glass-border: 1px solid var(--border);
  --glass-blur: none;
  --glass-shadow: 0 2px 10px rgba(20, 24, 27, 0.03);
  --white: #14181B;
  --muted: #8A8F98;
  --muted2: #B7BBC2;
  --radius: 18px;
  --sidebar-w: 250px;
  --topbar-h: 68px;
  --font-d: 'Inter', 'Outfit', sans-serif;
  --font-m: 'Inter', 'Lato', sans-serif;
  --font-c: 'JetBrains Mono', monospace;
}

/* ---- 2. Page background ----------------------------------- */
body {
  font-family: var(--font-m);
  color: var(--text);
  background:
    radial-gradient(circle at 10% -5%, rgba(15, 157, 88, .14), transparent 34%),
    linear-gradient(135deg, #F0F1F3 0%, #F7FAF8 48%, #FFFFFF 100%) !important;
}
body::before {
  background-image: radial-gradient(circle, rgba(15, 157, 88, .08) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: .45;
}
body::after { display: none !important; }

::-webkit-scrollbar-thumb { background: var(--border2); }
::-webkit-scrollbar-thumb:hover { background: var(--border3); }

/* ---- 3. App shell / layout ------------------------------- */
#app.visible { display: flex; gap: 20px; padding: 22px; }

.sidebar {
  border: 0 !important;
  border-radius: 24px;
  box-shadow: 0 14px 34px rgba(20, 24, 27, .06);
  background: #ffffff !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  height: calc(100dvh - 44px);
  padding: 6px 6px 10px;
}
.sidebar-logo {
  padding: 14px 14px 14px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.sidebar-logo .brand {
  font-family: var(--font-d);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.6px;
}
.role-badge-sidebar {
  background: var(--green-dim);
  color: var(--green3);
  border: 0;
  font-family: var(--font-c);
  font-size: 10px;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 1px;
}
.role-badge-sidebar.teacher { background: var(--gold-dim); color: var(--gold); }

.sidebar-course-selector { padding: 12px 12px; border-bottom: 1px solid var(--border); }
.course-select-label {
  font-family: var(--font-c);
  font-size: 10px;
  letter-spacing: 1.3px;
  color: var(--text-dim);
}
.course-select {
  background: #f5fbf8;
  border: 1px solid var(--border2);
  border-radius: 12px;
  font-family: var(--font-m);
  padding: 9px 11px;
}
.course-select:focus { border-color: var(--cyan); box-shadow: 0 0 0 4px rgba(15, 157, 88, .12); }

.sidebar-section { padding: 10px 0 2px; }
.sidebar-label {
  padding: 0 12px 8px;
  color: var(--text-dim);
  font-family: var(--font-c);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.3px;
}
.nav-item {
  border-left: 0 !important;
  border-radius: 12px;
  min-height: 42px;
  gap: 12px;
  padding: 8px 11px;
  margin: 1px 4px;
  width: calc(100% - 8px);
  color: var(--text-muted);
  font-family: var(--font-m);
  font-size: 13px;
  font-weight: 600;
}
.nav-item i {
  width: 20px;
  text-align: center;
  font-size: 15px;
  color: var(--text-dim);
}
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item:hover i { color: var(--text-muted); }
.nav-item.active {
  background: var(--cyan) !important;
  color: #ffffff !important;
  border-left-color: transparent !important;
}
.nav-item.active i { color: #ffffff; }
.nav-badge {
  background: var(--gold);
  color: #fff;
  font-family: var(--font-c);
  border-radius: 999px;
}
.nav-item.active .nav-badge { background: rgba(255, 255, 255, .25); }

.sidebar-footer {
  margin: auto 6px 0;
  padding: 12px 8px 4px;
  border-top: 1px solid var(--border);
  gap: 10px;
}
.user-avatar {
  background: var(--green3) !important;
  border: 0 !important;
  color: #fff !important;
  font-weight: 800;
}
.footer-name { font-family: var(--font-d); font-weight: 700; }
.footer-role { font-family: var(--font-c); color: var(--text-muted); }
.logout-btn {
  border: 0;
  border-radius: 11px;
  background: var(--green-dim);
  color: var(--green3);
  font-weight: 700;
  padding: 7px 11px;
}
.logout-btn:hover { background: #ffe6e6; color: var(--red); border: 0; }

/* ---- 4. Main area + topbar ------------------------------- */
.main-area {
  gap: 18px;
  overflow-y: auto;
  padding-right: 2px;
}
.topbar {
  min-height: var(--topbar-h);
  border: 0 !important;
  border-radius: 20px;
  box-shadow: 0 2px 10px rgba(20, 24, 27, .03);
  padding: 12px 22px;
  background: #ffffff !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}
.topbar-title { font-family: var(--font-d); font-size: 18px; font-weight: 800; letter-spacing: -0.4px; }
.topbar-subtitle { font-family: var(--font-m); color: var(--text-muted); }
.notif-btn {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 13px;
  background: var(--green-dim);
  color: var(--green3);
}
.notif-btn:hover { background: var(--green-mid); color: var(--green3); border: 0; }
.user-avatar, .notif-btn { flex: 0 0 auto; }

.main-content { padding: 4px 4px 28px; gap: 20px; }

/* ---- 5. Page headers ------------------------------------- */
.page-label { color: var(--green3); font-family: var(--font-c); font-weight: 800; letter-spacing: 1.3px; }
.page-label::before { background: var(--green3); }
.page-title { font-family: var(--font-d); font-size: 25px; font-weight: 800; letter-spacing: -0.5px; }
.page-sub { font-family: var(--font-m); color: var(--text-muted); }

/* ---- 6. Cards + stat tiles ------------------------------- */
.card,
.material-card,
.video-card,
.assignment-card,
.announcement-card,
.grade-table-wrap,
.table-wrap,
.modal-box {
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: 20px !important;
  box-shadow: 0 18px 46px rgba(30, 70, 58, .08), 0 1px 0 rgba(255, 255, 255, .8) inset !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

/* Feeds/lists that live INSIDE a .card — keep them flat, no nested card */
.activity-feed,
.course-progress-card,
.submission-detail,
.file-list {
  background: transparent !important;
  border: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
}
.activity-item { border-bottom: 1px solid var(--border); padding: 12px 0; }
.activity-item:last-child { border-bottom: 0; }
.activity-text { font-family: var(--font-m); font-size: 12px; color: var(--text-muted); }
.activity-text strong { color: var(--text); }
.activity-time { font-family: var(--font-c); font-size: 10px; color: var(--text-dim); }
.card-header { border-bottom: 1px solid var(--border); padding: 16px 20px; }
.card-title { font-family: var(--font-d); font-size: 15px; font-weight: 700; }
.card-body { padding: 20px; }

.stats-row { gap: 16px; margin-bottom: 4px; }
.stat-cell {
  position: relative;
  overflow: hidden;
  min-height: 118px;
  padding: 18px 20px;
  background: #ffffff !important;
  border: 1px solid var(--border) !important;
  border-radius: 20px !important;
  box-shadow: 0 18px 46px rgba(30, 70, 58, .08) !important;
  backdrop-filter: none !important;
}
.stat-cell::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 30px;
  background: var(--green-dim);
  z-index: 0;
}
.stat-cell.orange::after { background: var(--gold-dim); }
.stat-cell.purple::after { background: var(--purple-dim); }
.stat-cell > * { position: relative; z-index: 1; }
.stat-val { font-family: var(--font-d); font-size: 32px; font-weight: 800; letter-spacing: -0.6px; color: var(--text); }
.stat-cell.orange .stat-val { color: var(--gold); }
.stat-cell.green .stat-val { color: var(--green); }
.stat-cell.purple .stat-val { color: var(--purple); }
.stat-lbl { font-family: var(--font-c); font-size: 10px; letter-spacing: .9px; color: var(--text-muted); text-transform: uppercase; }

.grid-2 { gap: 20px; }
.grid-3 { gap: 20px; }

/* ---- 7. Buttons ----------------------------------------- */
.btn,
.btn-action,
.btn-dl,
.btn-open,
.btn-preview {
  min-height: 38px;
  border-radius: 12px;
  font-family: var(--font-m);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: none;
  border: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 9px 15px;
  transition: all .15s;
}
.btn-primary,
.btn-open {
  background: var(--cyan);
  color: #ffffff;
  box-shadow: 0 12px 22px rgba(15, 157, 88, .18);
}
.btn-primary:hover,
.btn-open:hover { background: var(--green3); }
.btn-secondary,
.btn-preview,
.btn-dl,
.btn-action {
  background: #f5fbf8;
  border: 1px solid var(--border2);
  color: var(--text);
}
.btn-secondary:hover,
.btn-preview:hover,
.btn-dl:hover,
.btn-action:hover { background: var(--green-dim); border-color: var(--cyan); color: var(--green3); }
.btn-danger { background: var(--red-dim); border: 1px solid rgba(192, 57, 43, .3); color: var(--red); }
.btn-login {
  background: var(--cyan);
  color: #fff;
  border-radius: 13px;
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--font-m);
  font-weight: 800;
  box-shadow: 0 12px 22px rgba(15, 157, 88, .18);
}
.btn-login:hover { background: var(--green3); opacity: 1; }

/* ---- 8. Forms ------------------------------------------- */
.form-input,
.form-select,
.form-textarea,
.grade-input,
.feedback-input,
.tt-topic-input,
.upload-input {
  background: #f8fcfa;
  border: 1px solid var(--border2);
  border-radius: 12px;
  color: var(--text);
  font-family: var(--font-m);
  font-size: 13px;
  padding: 11px 13px;
  backdrop-filter: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus,
.grade-input:focus,
.feedback-input:focus,
.tt-topic-input:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(15, 157, 88, .12);
}
.form-label { font-family: var(--font-c); color: var(--text-muted); font-size: 10px; letter-spacing: 1.3px; }

/* ---- 9. Tables ----------------------------------------- */
.grade-table th,
.grade-table thead td {
  background: var(--green-dim);
  color: var(--text);
  border-bottom: 0;
  padding: 13px 15px;
  font-family: var(--font-c);
  font-size: 10px;
  letter-spacing: .8px;
}
.grade-table td { padding: 13px 15px; border-bottom: 1px solid var(--border); }
.grade-table tr:hover td { background: #f8fcfa; }

/* ---- 10. Badges ---------------------------------------- */
.status-badge,
.watched-badge,
.week-count,
.tt-week-badge {
  border: 0;
  border-radius: 999px;
  padding: 4px 10px;
  font-family: var(--font-c);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .4px;
}
.status-graded, .status-submitted { background: #dff8ea; color: #07814f; }
.status-pending, .status-open { background: #fff0c9; color: #9a6a05; }
.status-late { background: #ffe6e6; color: #bf3838; }

/* ---- 11. Modals --------------------------------------- */
.modal-overlay { background: rgba(20, 24, 27, .45); }
.modal-box { border-radius: 20px !important; padding: 24px; }
.modal-header { border-bottom: 1px solid var(--border); padding-bottom: 14px; margin-bottom: 16px; }
.modal-title { font-family: var(--font-d); font-size: 17px; font-weight: 700; }
.modal-close {
  background: var(--green-dim);
  border: 0;
  color: var(--green3);
  border-radius: 10px;
  width: 34px;
  height: 34px;
}
.modal-footer { border-top: 1px solid var(--border); padding-top: 14px; margin-top: 16px; }

/* ---- 12. Login screen --------------------------------- */
#login-screen {
  background: linear-gradient(135deg, #F0F1F3 0%, #F7FAF8 48%, #FFFFFF 100%);
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.login-wrap {
  border: 1px solid var(--border);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 30px 60px rgba(30, 70, 58, .12);
  margin: auto;
}
.login-header { text-align: center; }
.login-logo { justify-content: center; margin-bottom: 16px; }
.login-title { font-family: var(--font-d); font-weight: 800; }
.login-sub { font-family: var(--font-c); color: var(--text-muted); }
.logo-text { font-family: var(--font-d); font-weight: 800; }

/* ---- 13. Misc component polish ------------------------ */
.toast {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(30, 70, 58, .16);
  color: var(--text);
}
.file-row { border-bottom: 1px solid var(--border); }
.file-row:hover { background: var(--bg-hover); }
.video-thumb, .video-thumb-grid { border-radius: 14px; }
.progress-bar { background: var(--border); border-radius: 999px; }
.progress-fill { background: var(--cyan); border-radius: 999px; }
.week-header { background: #f8fcfa; border-radius: 12px; }
.week-header:hover { background: var(--green-dim); }

/* ---- 13b. Brand logo -------------------------------- */
.brand-img { height: 22px; width: auto; display: block; }
.login-logo img { max-width: 170px; }
@media (max-width: 1024px) { .brand-img { height: 20px; } }

/* ---- 13c. Material preview modal -------------------- */
.material-actions { display: flex; gap: 8px; flex-shrink: 0; }
.material-preview-box {
  width: min(960px, 94vw) !important;
  max-width: 960px !important;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  padding: 18px !important;
}
.material-preview-body {
  flex: 1;
  min-height: 0;
  margin-top: 14px;
  overflow: auto;
  border-radius: 12px;
  background: #f6f8f7;
  border: 1px solid var(--border);
}
.material-preview-body iframe {
  width: 100%;
  height: 74vh;
  border: 0;
  display: block;
  background: #fff;
}
.material-preview-body img { display: block; margin: 0 auto; padding: 16px; }
.preview-text {
  margin: 0;
  padding: 18px 20px;
  font-family: var(--font-c);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ---- 14. Mobile ------------------------------------- */
@media (max-width: 1024px) {
  #app.visible { padding: 0; gap: 0; }
  .sidebar {
    border-radius: 0;
    height: 100dvh;
    padding: 6px;
  }
  .main-area { padding: 12px; gap: 12px; }
}

@media (max-width: 720px) {
  .stats-row { grid-template-columns: repeat(2, 1fr) !important; }
  .stat-cell { min-height: 96px; padding: 14px 16px; }
  .stat-cell::after { height: 0; }
  .stat-val { font-size: 26px; }
  .grid-2, .grid-3 { grid-template-columns: 1fr !important; }
  .material-actions { flex-wrap: wrap; }
}