/* ===========================================================
   Avidlearn — Design System
   Persian / RTL educational platform
   Palette: Indigo primary · Cyan accent · Amber highlight
   =========================================================== */

@import url('https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/Vazirmatn-font-face.css');

:root {
  /* ---- Brand ---- */
  --indigo-50:  #EEF0FF;
  --indigo-100: #E0E3FF;
  --indigo-200: #C4C9FF;
  --indigo-300: #A0A8FF;
  --indigo-400: #7C84F7;
  --indigo-500: #5B63E8;
  --indigo-600: #4F46E5;
  --indigo-700: #4038C4;
  --indigo-800: #322C9B;
  --indigo-900: #272275;

  --cyan-300: #67E8F9;
  --cyan-400: #38D6EE;
  --cyan-500: #22C7E0;
  --cyan-600: #0FAEC9;

  --amber-300: #FCD34D;
  --amber-400: #FBBF24;
  --amber-500: #F59E0B;
  --amber-600: #D97706;

  /* ---- Neutrals (slate) ---- */
  --slate-50:  #F8FAFC;
  --slate-100: #F1F5F9;
  --slate-150: #E9EEF5;
  --slate-200: #E2E8F0;
  --slate-300: #CBD5E1;
  --slate-400: #94A3B8;
  --slate-500: #64748B;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1E293B;
  --slate-900: #0F172A;
  --slate-950: #070C18;

  /* ---- Semantic ---- */
  --success: #16A34A;
  --success-bg: #DCFCE7;
  --warn: #D97706;
  --warn-bg: #FEF3C7;
  --danger: #DC2626;
  --danger-bg: #FEE2E2;
  --info: #2563EB;
  --info-bg: #DBEAFE;

  /* ---- Roles ---- */
  --primary: var(--indigo-600);
  --primary-strong: var(--indigo-700);
  --accent: var(--cyan-500);
  --highlight: var(--amber-400);

  --bg: var(--slate-100);
  --surface: #FFFFFF;
  --surface-2: var(--slate-50);
  --text: var(--slate-800);
  --text-soft: var(--slate-500);
  --text-faint: var(--slate-400);
  --border: var(--slate-200);
  --border-strong: var(--slate-300);

  /* ---- Radii ---- */
  --r-xs: 7px;
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 28px;
  --r-full: 999px;

  /* ---- Shadow ---- */
  --sh-xs: 0 1px 2px rgba(15,23,42,.06);
  --sh-sm: 0 1px 3px rgba(15,23,42,.08), 0 1px 2px rgba(15,23,42,.04);
  --sh-md: 0 4px 14px rgba(15,23,42,.08), 0 2px 4px rgba(15,23,42,.04);
  --sh-lg: 0 14px 40px rgba(15,23,42,.12), 0 4px 10px rgba(15,23,42,.05);
  --sh-indigo: 0 10px 28px rgba(79,70,229,.30);

  /* ---- Type ---- */
  --font: 'Vazirmatn', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --sidebar-w: 264px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body { font-size: 15px; line-height: 1.7; }

h1,h2,h3,h4,h5 { margin: 0; font-weight: 700; line-height: 1.35; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }
::selection { background: var(--indigo-200); }
:focus-visible { outline: 2px solid var(--indigo-400); outline-offset: 2px; }

/* numbers / latin tabular look */
.tabular { font-feature-settings: "tnum"; font-variant-numeric: tabular-nums; }

/* ---- Scrollbar ---- */
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb { background: var(--slate-300); border-radius: 99px; border: 2px solid transparent; background-clip: content-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--slate-400); background-clip: content-box; }
*::-webkit-scrollbar-track { background: transparent; }

/* ===========================================================
   Layout — app shell with sidebar
   =========================================================== */
.app { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--surface);
  border-inline-start: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
  z-index: 40;
}
.sidebar__brand {
  display: flex; align-items: center; gap: 11px;
  padding: 20px 22px 18px;
}
.sidebar__brand .logo { width: 38px; height: 38px; flex: 0 0 38px; }
.sidebar__brand .name { font-weight: 800; font-size: 19px; letter-spacing: -.02em; }
.sidebar__brand .name b { color: var(--primary); }
.sidebar__role {
  font-size: 11.5px; color: var(--text-soft); font-weight: 600;
  background: var(--slate-100); padding: 2px 9px; border-radius: var(--r-full);
}
.sidebar__nav { padding: 8px 12px; overflow-y: auto; flex: 1; }
.nav-group__label {
  font-size: 11px; font-weight: 700; color: var(--text-faint);
  text-transform: uppercase; letter-spacing: .08em;
  padding: 16px 12px 7px;
}
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: var(--r-sm);
  color: var(--slate-600); font-weight: 600; font-size: 14.5px;
  margin-bottom: 2px; transition: background .14s, color .14s;
  position: relative;
}
.nav-item svg { width: 20px; height: 20px; flex: 0 0 20px; stroke-width: 1.9; }
.nav-item:hover { background: var(--slate-100); color: var(--slate-900); }
.nav-item.active { background: var(--indigo-50); color: var(--primary-strong); }
.nav-item.active::before {
  content: ''; position: absolute; inset-inline-start: -12px; top: 50%;
  transform: translateY(-50%); width: 4px; height: 22px;
  background: var(--primary); border-radius: 0 4px 4px 0;
}
.nav-item .badge-count {
  margin-inline-start: auto; background: var(--indigo-100); color: var(--primary-strong);
  font-size: 11.5px; font-weight: 700; padding: 1px 8px; border-radius: var(--r-full);
}
.sidebar__foot { padding: 12px; border-top: 1px solid var(--border); }

/* ---- Collapsible sidebar (desktop) ---- */
@media (min-width: 981px) {
  .sidebar { transition: width .22s ease, flex-basis .22s ease; }
  .sidebar.collapsed { width: 76px; flex: 0 0 76px; }
  .sidebar.collapsed .sidebar__brand { justify-content: center; padding-inline: 0; gap: 0; }
  .sidebar.collapsed .sidebar__brand .name,
  .sidebar.collapsed .sidebar__role,
  .sidebar.collapsed .nav-item > span,
  .sidebar.collapsed .nav-item .badge-count,
  .sidebar.collapsed .nav-group__label,
  .sidebar.collapsed .userchip .meta,
  .sidebar.collapsed .userchip > svg { display: none; }
  .sidebar.collapsed .nav-item { justify-content: center; padding-inline: 0; }
  .sidebar.collapsed .userchip { justify-content: center; padding-inline: 0; }
  .collapse-btn { display: inline-grid; }
}
@media (max-width: 980px) {
  .topbar .collapse-btn { display: none !important; }
}

.userchip {
  display: flex; align-items: center; gap: 11px;
  padding: 9px 10px; border-radius: var(--r-md);
  transition: background .14s; cursor: pointer;
}
.userchip:hover { background: var(--slate-100); }
.userchip .meta { line-height: 1.3; min-width: 0; }
.userchip .meta .nm { font-weight: 700; font-size: 13.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.userchip .meta .sub { font-size: 11.5px; color: var(--text-soft); }

/* ---- Main column ---- */
.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  height: 66px; flex: 0 0 66px;
  background: rgba(255,255,255,.82); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 16px;
  padding: 0 26px; position: sticky; top: 0; z-index: 30;
}
.topbar h1 { font-size: 19px; font-weight: 800; letter-spacing: -.02em; }
.topbar .sub { font-size: 12.5px; color: var(--text-soft); font-weight: 500; }
.topbar__spacer { flex: 1; }

.icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center;
  border-radius: var(--r-sm); border: 1px solid var(--border);
  background: var(--surface); color: var(--slate-600);
  transition: background .14s, border-color .14s, color .14s; position: relative;
}
.icon-btn:hover { background: var(--slate-100); color: var(--slate-900); }
.icon-btn svg { width: 20px; height: 20px; stroke-width: 1.9; }
.icon-btn .dot { position: absolute; top: 8px; inset-inline-end: 9px; width: 8px; height: 8px; background: var(--danger); border-radius: 99px; border: 2px solid #fff; }

.mobile-only { display: none; }

.content { padding: 26px; flex: 1; }
.content--narrow { max-width: 1180px; margin: 0 auto; width: 100%; }

.page-head { margin-bottom: 22px; }
.page-head h2 { font-size: 24px; font-weight: 800; letter-spacing: -.02em; }
.page-head p { color: var(--text-soft); margin-top: 4px; font-size: 14px; }

/* ===========================================================
   Buttons
   =========================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--r-sm); border: 1px solid transparent;
  font-weight: 700; font-size: 14px; line-height: 1; white-space: nowrap;
  transition: transform .08s, background .14s, box-shadow .14s, border-color .14s;
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 18px; height: 18px; stroke-width: 2; }
.btn--primary { background: var(--primary); color: #fff; box-shadow: var(--sh-indigo); }
.btn--primary:hover { background: var(--primary-strong); }
.btn--ghost { background: var(--surface); color: var(--slate-700); border-color: var(--border-strong); }
.btn--ghost:hover { background: var(--slate-100); }
.btn--soft { background: var(--indigo-50); color: var(--primary-strong); }
.btn--soft:hover { background: var(--indigo-100); }
.btn--accent { background: var(--accent); color: #06343d; }
.btn--accent:hover { background: var(--cyan-600); color:#fff; }
.btn--danger { background: var(--danger-bg); color: var(--danger); }
.btn--danger:hover { background: #FBCFCF; }
.btn--sm { padding: 7px 13px; font-size: 13px; border-radius: var(--r-xs); }
.btn--lg { padding: 13px 24px; font-size: 15.5px; border-radius: var(--r-md); }
.btn--block { width: 100%; }

/* ===========================================================
   Card
   =========================================================== */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); box-shadow: var(--sh-sm);
}
.card--pad { padding: 22px; }
.card__head {
  display: flex; align-items: center; gap: 12px;
  padding: 18px 22px; border-bottom: 1px solid var(--border);
}
.card__head h3 { font-size: 16px; font-weight: 800; }
.card__head .sub { font-size: 12.5px; color: var(--text-soft); margin-top: 2px; }
.card__head .spacer { flex: 1; }
.card__body { padding: 22px; }

/* ===========================================================
   Stat cards
   =========================================================== */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 18px; box-shadow: var(--sh-sm);
  position: relative; overflow: hidden;
}
.stat__ico {
  width: 42px; height: 42px; border-radius: var(--r-md);
  display: grid; place-items: center; margin-bottom: 14px;
}
.stat__ico svg { width: 22px; height: 22px; stroke-width: 2; }
.stat__val { font-size: 27px; font-weight: 800; letter-spacing: -.02em; line-height: 1; }
.stat__label { font-size: 13px; color: var(--text-soft); margin-top: 6px; font-weight: 600; }
.stat__delta { font-size: 12px; font-weight: 700; margin-top: 9px; display: inline-flex; align-items: center; gap: 3px; }
.stat__delta.up { color: var(--success); }
.stat__delta.down { color: var(--danger); }

.ico-indigo { background: var(--indigo-50); color: var(--primary); }
.ico-cyan   { background: #E0F7FB; color: var(--cyan-600); }
.ico-amber  { background: var(--warn-bg); color: var(--amber-600); }
.ico-green  { background: var(--success-bg); color: var(--success); }
.ico-rose   { background: var(--danger-bg); color: var(--danger); }
.ico-violet { background: #F3E8FF; color: #7C3AED; }

/* ===========================================================
   Badges / chips / pills
   =========================================================== */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 11px; border-radius: var(--r-full);
  font-size: 12.5px; font-weight: 700;
  background: var(--slate-100); color: var(--slate-600);
}
.chip svg { width: 14px; height: 14px; stroke-width: 2.2; }
.chip--success { background: var(--success-bg); color: var(--success); }
.chip--warn { background: var(--warn-bg); color: var(--warn); }
.chip--danger { background: var(--danger-bg); color: var(--danger); }
.chip--info { background: var(--info-bg); color: var(--info); }
.chip--indigo { background: var(--indigo-50); color: var(--primary-strong); }
.chip--dot::before { content:''; width:7px;height:7px;border-radius:99px;background:currentColor; }

/* ===========================================================
   Progress
   =========================================================== */
.progress { height: 9px; border-radius: 99px; background: var(--slate-150); overflow: hidden; }
.progress__bar { height: 100%; border-radius: 99px; background: var(--primary); transition: width .6s cubic-bezier(.4,0,.2,1); }
.progress__bar.grad { background: linear-gradient(90deg, var(--indigo-500), var(--cyan-500)); }
.progress__bar.amber { background: linear-gradient(90deg, var(--amber-400), var(--amber-500)); }
.progress__bar.green { background: var(--success); }

/* circular */
.ring { position: relative; display: inline-grid; place-items: center; }
.ring svg { transform: rotate(-90deg); }
.ring__val { position: absolute; font-weight: 800; }

/* ===========================================================
   Tables
   =========================================================== */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tbl th {
  text-align: start; font-size: 12px; font-weight: 700; color: var(--text-soft);
  padding: 11px 16px; border-bottom: 1px solid var(--border);
  text-transform: uppercase; letter-spacing: .03em; white-space: nowrap;
}
table.tbl td { padding: 13px 16px; border-bottom: 1px solid var(--slate-100); vertical-align: middle; }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl tbody tr { transition: background .12s; }
table.tbl tbody tr:hover { background: var(--slate-50); }

/* ===========================================================
   Avatar
   =========================================================== */
.avatar {
  border-radius: 99px; display: grid; place-items: center;
  font-weight: 800; color: #fff; flex: 0 0 auto; overflow: hidden;
  background: var(--indigo-500);
}
.avatar.sm { width: 34px; height: 34px; font-size: 13px; }
.avatar.md { width: 42px; height: 42px; font-size: 15px; }
.avatar.lg { width: 56px; height: 56px; font-size: 19px; }
.av-1 { background: linear-gradient(135deg,#6366F1,#4F46E5); }
.av-2 { background: linear-gradient(135deg,#22C7E0,#0FAEC9); }
.av-3 { background: linear-gradient(135deg,#FBBF24,#F59E0B); }
.av-4 { background: linear-gradient(135deg,#EC4899,#DB2777); }
.av-5 { background: linear-gradient(135deg,#10B981,#059669); }
.av-6 { background: linear-gradient(135deg,#8B5CF6,#7C3AED); }

/* ===========================================================
   Inputs
   =========================================================== */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 7px; color: var(--slate-700); }
.input, .select, .textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border-strong);
  border-radius: var(--r-sm); font-family: inherit; font-size: 14.5px;
  background: var(--surface); color: var(--text); transition: border-color .14s, box-shadow .14s;
}
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--indigo-400); box-shadow: 0 0 0 3px var(--indigo-100);
}
.input::placeholder, .textarea::placeholder { color: var(--text-faint); }
.input-icon { position: relative; }
.input-icon svg { position: absolute; inset-inline-start: 13px; top: 50%; transform: translateY(-50%); width: 19px; height: 19px; color: var(--text-faint); stroke-width:2; }
.input-icon .input { padding-inline-start: 42px; }

/* ===========================================================
   Misc helpers
   =========================================================== */
.row { display: flex; align-items: center; gap: 12px; }
.col { display: flex; flex-direction: column; }
.between { justify-content: space-between; }
.wrap { flex-wrap: wrap; }
.grow { flex: 1; }
.muted { color: var(--text-soft); }
.faint { color: var(--text-faint); }
.center { text-align: center; }
.divider { height: 1px; background: var(--border); margin: 18px 0; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.hide { display: none !important; }

.tag-soft { font-size:12px; font-weight:700; padding:3px 9px; border-radius:var(--r-full); background:var(--slate-100); color:var(--slate-600); }

/* segmented control */
.seg { display: inline-flex; background: var(--slate-100); border-radius: var(--r-sm); padding: 3px; gap: 2px; }
.seg button {
  border: none; background: transparent; padding: 7px 15px; border-radius: 7px;
  font-weight: 700; font-size: 13.5px; color: var(--slate-500); transition: all .14s;
}
.seg button.active { background: var(--surface); color: var(--primary-strong); box-shadow: var(--sh-xs); }

/* toast */
.toast-host { position: fixed; bottom: 22px; inset-inline-start: 22px; z-index: 200; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: var(--slate-900); color: #fff; padding: 13px 18px; border-radius: var(--r-md);
  box-shadow: var(--sh-lg); font-weight: 600; font-size: 14px; display: flex; align-items: center; gap: 10px;
  animation: toastIn .3s cubic-bezier(.2,.8,.2,1);
}
.toast svg { width: 19px; height: 19px; color: var(--cyan-400); }
@keyframes toastIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* skeleton shimmer */
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ===========================================================
   Mobile
   =========================================================== */
.scrim { position: fixed; inset: 0; background: rgba(15,23,42,.45); z-index: 39; opacity: 0; pointer-events: none; transition: opacity .2s; }
.scrim.show { opacity: 1; pointer-events: auto; }

@media (max-width: 980px) {
  :root { --sidebar-w: 280px; }
  .sidebar {
    position: fixed; top: 0; bottom: 0; inset-inline-start: 0;
    transform: translateX(100%); transition: transform .26s cubic-bezier(.4,0,.2,1);
    box-shadow: var(--sh-lg); border: none;
  }
  [dir=rtl] .sidebar { transform: translateX(100%); }
  [dir=rtl] .sidebar.open { transform: translateX(0); }
  .sidebar.open { transform: translateX(0); }
  .mobile-only { display: inline-grid; }
  .stat-grid { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .content { padding: 16px; }
  .topbar { padding: 0 16px; gap: 10px; }
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .grid-2 { grid-template-columns: 1fr; }
  .hide-sm { display: none !important; }
}