/* ===================================================================== *
 *  ChessVision — Design System
 *  Persian-first, RTL, dark/light, typography-driven, keyboard friendly.
 * ===================================================================== */

@font-face { font-family: "Vazirmatn"; src: url("./fonts/Vazirmatn-Regular.woff2") format("woff2");
  font-weight: 400; font-display: swap; }
@font-face { font-family: "Vazirmatn"; src: url("./fonts/Vazirmatn-Medium.woff2") format("woff2");
  font-weight: 500; font-display: swap; }
@font-face { font-family: "Vazirmatn"; src: url("./fonts/Vazirmatn-Bold.woff2") format("woff2");
  font-weight: 700; font-display: swap; }

:root {
  /* ---- palette (dark is the default: a calm midnight study room) ---- */
  --bg:            #0d1117;
  --bg-elevated:   #131a24;
  --bg-subtle:     #182231;
  --bg-hover:      #1e2937;
  --panel:         #141c26;
  --panel-border:  #22303f;
  --text:          #e8eef6;
  --text-muted:    #9db0c4;
  --text-dim:      #6b8199;

  --brand:         #35c9a6;
  --brand-strong:  #22a98a;
  --brand-soft:    rgba(53, 201, 166, 0.14);
  --accent:        #f2b23e;
  --accent-soft:   rgba(242, 178, 62, 0.15);
  --danger:        #f2604f;
  --danger-soft:   rgba(242, 96, 79, 0.14);
  --info:          #5aa4f5;
  --info-soft:     rgba(90, 164, 245, 0.14);
  --success:       #4cd07d;
  --success-soft:  rgba(76, 208, 125, 0.14);
  --purple:        #a984f2;

  --board-light:   #dfe6ec;
  --board-dark:    #5c7d99;
  --board-highlight: rgba(242, 178, 62, 0.55);
  --board-correct: rgba(76, 208, 125, 0.5);
  --board-wrong:   rgba(242, 96, 79, 0.5);
  --board-hint:    rgba(90, 164, 245, 0.45);
  --board-last:    rgba(242, 178, 62, 0.28);

  --radius-sm: 8px;  --radius: 14px;  --radius-lg: 20px;  --radius-pill: 999px;
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.24);
  --shadow: 0 8px 24px rgba(0,0,0,.28);
  --shadow-lg: 0 20px 48px rgba(0,0,0,.4);
  --font: "Vazirmatn", "Segoe UI", Tahoma, system-ui, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --transition: 180ms cubic-bezier(.22,.61,.36,1);
  --sidebar-w: 248px;
  --header-h: 64px;
  --z-modal: 900; --z-toast: 1000; --z-palette: 1100;
}

[data-theme="light"] {
  --bg:            #f5f7fa;
  --bg-elevated:   #ffffff;
  --bg-subtle:     #eef2f7;
  --bg-hover:      #e6ecf3;
  --panel:         #ffffff;
  --panel-border:  #dbe3ec;
  --text:          #16202b;
  --text-muted:    #55657a;
  --text-dim:      #7a8ba0;
  --brand:         #12866f;
  --brand-strong:  #0c6b58;
  --brand-soft:    rgba(18, 134, 111, 0.1);
  --accent:        #b7791f;
  --accent-soft:   rgba(183, 121, 31, 0.12);
  --danger:        #c0392b;
  --danger-soft:   rgba(192, 57, 43, 0.1);
  --info:          #2b6cb0;
  --info-soft:     rgba(43, 108, 176, 0.1);
  --success:       #227a4b;
  --success-soft:  rgba(34, 122, 75, 0.1);
  --board-light:   #f0e9dd;
  --board-dark:    #a58a6f;
  --shadow-sm: 0 1px 2px rgba(22,32,43,.08);
  --shadow: 0 6px 20px rgba(22,32,43,.1);
  --shadow-lg: 0 18px 40px rgba(22,32,43,.16);
}

/* ---- 12 Full UI Themes (Directive 11) + Dark Default ---- */
[data-theme="dark"] {
  --bg: #0d1117; --bg-elevated: #131a24; --bg-subtle: #182231; --bg-hover: #1e2937;
  --panel: #141c26; --panel-border: #22303f; --text: #e8eef6; --text-muted: #9db0c4; --text-dim: #6b8199;
  --brand: #35c9a6; --brand-strong: #22a98a; --brand-soft: rgba(53, 201, 166, 0.14);
  --accent: #f2b23e; --accent-soft: rgba(242, 178, 62, 0.15);
}
[data-theme="classic"] {
  --bg: #111418; --bg-elevated: #181d24; --bg-subtle: #202730; --bg-hover: #29323d;
  --panel: #181d24; --panel-border: #2c3644; --text: #eaecef; --text-muted: #9aa7b5; --text-dim: #6c7989;
  --brand: #3b82f6; --brand-strong: #2563eb; --brand-soft: rgba(59, 130, 246, 0.14);
  --accent: #f59e0b; --accent-soft: rgba(245, 158, 11, 0.14);
}
[data-theme="modern"] {
  --bg: #0f172a; --bg-elevated: #1e293b; --bg-subtle: #334155; --bg-hover: #3e4f66;
  --panel: #1e293b; --panel-border: #475569; --text: #f8fafc; --text-muted: #94a3b8; --text-dim: #64748b;
  --brand: #6366f1; --brand-strong: #4f46e5; --brand-soft: rgba(99, 102, 241, 0.14);
  --accent: #ec4899; --accent-soft: rgba(236, 72, 153, 0.14);
}
[data-theme="midnight"] {
  --bg: #05070a; --bg-elevated: #0b0f15; --bg-subtle: #121820; --bg-hover: #19212c;
  --panel: #0b0f15; --panel-border: #1a222c; --text: #e2e8f0; --text-muted: #8492a6; --text-dim: #5c6b80;
  --brand: #06b6d4; --brand-strong: #0891b2; --brand-soft: rgba(6, 182, 212, 0.14);
  --accent: #38bdf8; --accent-soft: rgba(56, 189, 248, 0.14);
}
[data-theme="ocean"] {
  --bg: #0a192f; --bg-elevated: #112240; --bg-subtle: #233554; --bg-hover: #2b4267;
  --panel: #112240; --panel-border: #233554; --text: #ccd6f6; --text-muted: #8892b0; --text-dim: #627295;
  --brand: #64ffda; --brand-strong: #52e3c2; --brand-soft: rgba(100, 255, 218, 0.14);
  --accent: #00bcd4; --accent-soft: rgba(0, 188, 212, 0.14);
}
[data-theme="forest"] {
  --bg: #0d1a14; --bg-elevated: #152920; --bg-subtle: #1e382c; --bg-hover: #264738;
  --panel: #152920; --panel-border: #274839; --text: #e2f0e8; --text-muted: #8fb39f; --text-dim: #678b77;
  --brand: #2ecc71; --brand-strong: #27ae60; --brand-soft: rgba(46, 204, 113, 0.14);
  --accent: #f1c40f; --accent-soft: rgba(241, 196, 15, 0.14);
}
[data-theme="royal"] {
  --bg: #120b1f; --bg-elevated: #1e1333; --bg-subtle: #2d1e4a; --bg-hover: #3b2860;
  --panel: #1e1333; --panel-border: #432e6e; --text: #f3e8ff; --text-muted: #bfa5e6; --text-dim: #9472c6;
  --brand: #a855f7; --brand-strong: #9333ea; --brand-soft: rgba(168, 85, 247, 0.14);
  --accent: #fbbf24; --accent-soft: rgba(251, 191, 36, 0.14);
}
[data-theme="paper"] {
  --bg: #f7f3e8; --bg-elevated: #ffffff; --bg-subtle: #eee6d3; --bg-hover: #e5dac1;
  --panel: #ffffff; --panel-border: #ded3bb; --text: #2c2518; --text-muted: #6e624d; --text-dim: #948671;
  --brand: #8b5a2b; --brand-strong: #6d441f; --brand-soft: rgba(139, 90, 43, 0.12);
  --accent: #b45309; --accent-soft: rgba(180, 83, 9, 0.12);
  --shadow-sm: 0 1px 2px rgba(44,37,24,.06); --shadow: 0 4px 16px rgba(44,37,24,.09);
}
[data-theme="neon"] {
  --bg: #080811; --bg-elevated: #121124; --bg-subtle: #1f1d3d; --bg-hover: #2c2957;
  --panel: #121124; --panel-border: #3b357a; --text: #ffffff; --text-muted: #a39cf4; --text-dim: #7971d6;
  --brand: #ff007f; --brand-strong: #e0006f; --brand-soft: rgba(255, 0, 127, 0.16);
  --accent: #00f0ff; --accent-soft: rgba(0, 240, 255, 0.16);
}
[data-theme="kids"] {
  --bg: #fff9e6; --bg-elevated: #ffffff; --bg-subtle: #ffeeba; --bg-hover: #ffe499;
  --panel: #ffffff; --panel-border: #ffd166; --text: #33272a; --text-muted: #594a4e; --text-dim: #8c767c;
  --brand: #ff6b6b; --brand-strong: #ee5253; --brand-soft: rgba(255, 107, 107, 0.14);
  --accent: #4ecdc4; --accent-soft: rgba(78, 205, 196, 0.14);
  --shadow-sm: 0 1px 2px rgba(51,39,42,.06); --shadow: 0 4px 16px rgba(51,39,42,.08);
}
[data-theme="space"] {
  --bg: #090a16; --bg-elevated: #13152c; --bg-subtle: #202347; --bg-hover: #2b2f5f;
  --panel: #13152c; --panel-border: #31366b; --text: #f0f2ff; --text-muted: #9aa1db; --text-dim: #6d75bd;
  --brand: #818cf8; --brand-strong: #6366f1; --brand-soft: rgba(129, 140, 248, 0.14);
  --accent: #f43f5e; --accent-soft: rgba(244, 63, 94, 0.14);
}
[data-theme="adventure"] {
  --bg: #1c1815; --bg-elevated: #292420; --bg-subtle: #3d352f; --bg-hover: #4e443c;
  --panel: #292420; --panel-border: #52473f; --text: #f5ede6; --text-muted: #ab9c90; --text-dim: #84756a;
  --brand: #d97706; --brand-strong: #b45309; --brand-soft: rgba(217, 119, 6, 0.14);
  --accent: #10b981; --accent-soft: rgba(16, 185, 129, 0.14);
}
[data-theme="candy"] {
  --bg: #fff0f5; --bg-elevated: #ffffff; --bg-subtle: #ffd6e5; --bg-hover: #ffc2d8;
  --panel: #ffffff; --panel-border: #ffb3cc; --text: #4a2533; --text-muted: #855366; --text-dim: #b37b92;
  --brand: #f472b6; --brand-strong: #ec4899; --brand-soft: rgba(244, 114, 182, 0.14);
  --accent: #38bdf8; --accent-soft: rgba(56, 189, 248, 0.14);
  --shadow-sm: 0 1px 2px rgba(74,37,51,.06); --shadow: 0 4px 16px rgba(74,37,51,.08);
}

/* ---- 7 Board Themes (Directive 11) ---- */
[data-board-theme="wood"], .board-theme-wood {
  --board-light: #eedab7; --board-dark: #b88b4a;
}
[data-board-theme="marble"], .board-theme-marble {
  --board-light: #e6e9ed; --board-dark: #8c9ba5;
}
[data-board-theme="green"], .board-theme-green {
  --board-light: #eeeed2; --board-dark: #769656;
}
[data-board-theme="blue"], .board-theme-blue {
  --board-light: #dee3e6; --board-dark: #4e78a0;
}
[data-board-theme="tournament"], .board-theme-tournament {
  --board-light: #f0d9b5; --board-dark: #b58863;
}
[data-board-theme="neon"], .board-theme-neon {
  --board-light: #1e1f38; --board-dark: #0a0b17;
  --board-highlight: rgba(0, 240, 255, 0.6);
}
[data-board-theme="kids"], .board-theme-kids {
  --board-light: #cbe3fb; --board-dark: #63a4ff;
}

/* ---- Accessibility (Directive 11) ---- */
[data-a11y-contrast="high"] {
  --panel-border: #ffffff !important;
  --text-muted: #ffffff !important;
  --text-dim: #cccccc !important;
  border-width: 2px !important;
}
[data-a11y-cb="true"] {
  --board-correct: #2980b9 !important;
  --board-wrong: #e67e22 !important;
  --success: #2980b9 !important;
  --danger: #e67e22 !important;
}
[data-a11y-large="true"] {
  font-size: 17.5px !important;
}
[data-a11y-motion="reduced"] *,
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ---- Player Identity Strip & Micro-animations (Directive 10) ---- */
.identity-strip {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.identity-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  background: var(--bg-hover);
  color: var(--text);
  border: 1px solid var(--panel-border);
  text-decoration: none;
  transition: transform var(--transition);
}
.identity-pill:hover {
  transform: translateY(-1px);
}
@keyframes floatUpFade {
  0% { opacity: 0; transform: translateY(6px) scale(0.88); }
  20% { opacity: 1; transform: translateY(0) scale(1.04); }
  80% { opacity: 1; transform: translateY(-3px) scale(1); }
  100% { opacity: 0; transform: translateY(-12px) scale(0.92); }
}
.stat-floater {
  position: absolute;
  top: -18px;
  inset-inline-end: 0;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  pointer-events: none;
  z-index: 50;
  animation: floatUpFade 1.25s cubic-bezier(.22,.61,.36,1) forwards;
}
.stat-floater.up { background: var(--success); color: #fff; box-shadow: 0 2px 8px rgba(76,208,125,.4); }
.stat-floater.down { background: var(--danger); color: #fff; box-shadow: 0 2px 8px rgba(242,96,79,.4); }


* { box-sizing: border-box; }
html {
  min-height: 100%;
  overflow-y: scroll;
}
body {
  min-height: 100%;
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font); font-size: 15px; line-height: 1.75;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  font-feature-settings: "ss02";
  overflow-x: hidden;
}
h1,h2,h3,h4,h5 { margin: 0 0 var(--space-3); font-weight: 700; line-height: 1.4; letter-spacing: -.01em; }
h1 { font-size: 26px; } h2 { font-size: 21px; } h3 { font-size: 17px; }
p { margin: 0 0 var(--space-3); color: var(--text-muted); }
a { color: var(--brand); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--brand-strong); }
small, .small { font-size: 12.5px; color: var(--text-dim); }
code, .mono { font-family: var(--mono); direction: ltr; unicode-bidi: embed; font-size: 12.5px; }
::selection { background: var(--brand-soft); }

/* ------------------------------- layout -------------------------------- */
.app-shell { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100vh; }
.sidebar {
  background: var(--bg-elevated); border-inline-end: 1px solid var(--panel-border);
  padding: var(--space-4) var(--space-3); position: sticky; top: 0; height: 100vh;
  overflow-y: auto; scrollbar-width: thin;
}
.brand { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-3) var(--space-5); }
.brand-logo {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; flex: none;
  background: linear-gradient(140deg, var(--brand), var(--brand-strong)); color: #04231c;
  font-size: 22px; box-shadow: var(--shadow-sm);
}
.brand-name { font-weight: 700; font-size: 17px; line-height: 1.2; }
.brand-sub { font-size: 11.5px; color: var(--text-dim); }
.nav-group { margin-bottom: var(--space-2); }
.nav-group-header {
  width: 100%; display: flex; align-items: center; justify-content: space-between;
  padding: 8px var(--space-3); border-radius: var(--radius-sm); background: transparent;
  border: 1px solid transparent; color: var(--text-muted); font-size: 13.5px;
  font-weight: 600; cursor: pointer; user-select: none;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  text-align: start; font-family: inherit;
}
.nav-group-header:hover { background: var(--bg-hover); color: var(--text); }
.nav-group-header.open { color: var(--text); font-weight: 700; }
.nav-group-title { display: flex; align-items: center; gap: var(--space-2); min-width: 0; }
.nav-group-icon { font-size: 16px; width: 20px; text-align: center; flex: none; }
.nav-group-label { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 13.5px; }
.nav-group-count {
  font-size: 11px; padding: 1px 6px; border-radius: var(--radius-pill);
  background: var(--bg-subtle); color: var(--text-dim); font-weight: normal; margin-inline-start: 4px;
}
.nav-group-chevron {
  font-size: 12px; color: var(--text-dim); transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), color var(--transition);
  margin-inline-start: auto; padding-inline-start: 8px; flex: none;
}
.nav-group-header.open .nav-group-chevron { color: var(--brand); }
.nav-group-items {
  display: flex; flex-direction: column; gap: 2px; margin-top: 3px;
  margin-inline-start: 14px; padding-inline-start: 6px;
  border-inline-start: 1.5px solid var(--panel-border);
  overflow: hidden;
}
.nav-group-items.collapsed { display: none; }
.nav-group-items.expanded { display: flex; }
.nav-label { font-size: 11.5px; color: var(--text-dim); padding: 0 var(--space-3) var(--space-2);
  letter-spacing: .02em; }
.nav-item {
  display: flex; align-items: center; gap: var(--space-3); padding: 8px var(--space-3);
  border-radius: var(--radius-sm); color: var(--text-muted); font-size: 13.5px;
  transition: background var(--transition), color var(--transition); cursor: pointer;
  border: 1px solid transparent; text-decoration: none;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { background: var(--brand-soft); color: var(--brand); border-color: rgba(53,201,166,.24); font-weight: 600; }
.nav-item .ico { width: 20px; text-align: center; flex: none; font-size: 16px; }
.nav-item .badge { margin-inline-start: auto; }

.main-col { display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: var(--header-h); display: flex; align-items: center; gap: var(--space-3);
  padding: 0 var(--space-5); border-bottom: 1px solid var(--panel-border);
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 40;
}
.topbar .search-trigger {
  display: flex; align-items: center; gap: var(--space-2); background: var(--bg-subtle);
  border: 1px solid var(--panel-border); color: var(--text-dim); border-radius: var(--radius-pill);
  padding: 7px var(--space-4); min-width: 220px; cursor: pointer; font-size: 13.5px;
  transition: border-color var(--transition);
}
.topbar .search-trigger:hover { border-color: var(--brand); }
.topbar .spacer { flex: 1; }
.content { padding: var(--space-5); max-width: 1500px; width: 100%; margin: 0 auto; }
.page-head { display: flex; align-items: flex-end; gap: var(--space-4); margin-bottom: var(--space-5); flex-wrap: wrap; }
.page-head h1 { margin: 0; }
.page-head .sub { color: var(--text-muted); font-size: 14px; }

/* ------------------------------- grid ---------------------------------- */
.grid { display: grid; gap: var(--space-4); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-side { grid-template-columns: minmax(0, 1.6fr) minmax(280px, 1fr); align-items: start; }
@media (max-width: 1080px) { .grid-side { grid-template-columns: 1fr; } }
.row { display: flex; gap: var(--space-3); align-items: center; flex-wrap: wrap; }
.row-sm { display: flex; gap: var(--space-2); align-items: center; }
.row-between { display: flex; gap: var(--space-3); align-items: center; justify-content: space-between; flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: var(--space-3); }
.stack-sm { display: flex; flex-direction: column; gap: var(--space-2); }
.stack-xs { display: flex; flex-direction: column; gap: var(--space-1); }

/* ------------------------------- cards --------------------------------- */
.card {
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius);
  padding: var(--space-4); box-shadow: var(--shadow-sm); transition: transform var(--transition),
  border-color var(--transition), box-shadow var(--transition);
}
.card.pad-lg { padding: var(--space-5); }
.card.pad-md, .pad-md { padding: var(--space-4); }
.card.pad-sm, .pad-sm { padding: var(--space-3); }
.card.pad-xs, .pad-xs { padding: var(--space-2); }
.table-responsive { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.card-hover:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--brand) 40%, var(--panel-border)); box-shadow: var(--shadow); }
.card-title { display: flex; align-items: center; gap: var(--space-2); font-weight: 700; margin-bottom: var(--space-2); }
.card-sub { color: var(--text-dim); font-size: 13px; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-value { font-size: 26px; font-weight: 700; line-height: 1.2; }
.stat-label { color: var(--text-dim); font-size: 12.5px; }
.stat-delta.up { color: var(--success); font-size: 12.5px; }
.stat-delta.down { color: var(--danger); font-size: 12.5px; }
.hero {
  background: radial-gradient(1100px 240px at 90% -20%, var(--brand-soft), transparent 60%),
              linear-gradient(150deg, var(--bg-elevated), var(--panel));
  border: 1px solid var(--panel-border); border-radius: var(--radius-lg); padding: var(--space-5);
}

/* ------------------------------- buttons ------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: 9px var(--space-4); border-radius: var(--radius-sm); border: 1px solid var(--panel-border);
  background: var(--bg-subtle); color: var(--text); font-family: inherit; font-size: 14px;
  font-weight: 500; cursor: pointer; transition: all var(--transition); white-space: nowrap;
}
.btn:hover:not(:disabled) { background: var(--bg-hover); transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: linear-gradient(140deg, var(--brand), var(--brand-strong)); color: #04231c;
  border-color: transparent; font-weight: 700; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.06); }
.btn-brand { background: var(--brand); color: #04231c; border-color: transparent; font-weight: 600; }
.btn-brand:hover:not(:disabled) { filter: brightness(1.08); }
.btn-accent { background: linear-gradient(140deg, var(--accent), var(--brand)); color: #000; border-color: transparent; font-weight: 700; }
.btn-accent:hover:not(:disabled) { filter: brightness(1.08); }
.btn-danger { background: var(--danger-soft); color: var(--danger); border-color: rgba(242,96,79,.3); }
.btn-success { background: rgba(16,185,129,0.18); color: #10b981; border-color: rgba(16,185,129,0.4); font-weight: 600; }
.btn-warn { background: rgba(245,158,11,0.18); color: #f59e0b; border-color: rgba(245,158,11,0.4); font-weight: 600; }
.btn-outline { background: transparent; border: 1px solid var(--panel-border); color: var(--text); }
.btn-outline:hover:not(:disabled) { background: var(--bg-hover); border-color: var(--brand); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-muted); }
.btn-ghost:hover:not(:disabled) { background: var(--bg-hover); color: var(--text); }
.btn-xs { padding: 3px var(--space-2); font-size: 11px; }
.btn-sm { padding: 6px var(--space-3); font-size: 13px; }
.btn-lg { padding: 13px var(--space-5); font-size: 16px; }
.btn-block { width: 100%; }
.btn-group { display: inline-flex; gap: var(--space-2); }

/* ------------------------------- badges -------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: var(--radius-pill);
  font-size: 12px; font-weight: 500; background: var(--bg-subtle); color: var(--text-muted);
  border: 1px solid var(--panel-border);
}
.badge-sm { padding: 2px 7px; font-size: 11px; }
.badge-xs { padding: 1px 5px; font-size: 10px; }
.badge-brand { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.badge-accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge-danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge-primary { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.badge-success { background: var(--success-soft); color: var(--success); border-color: transparent; }
.badge-info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.badge-warning, .badge-warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }

.text-dim { color: var(--text-dim) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warn) !important; }
.text-success { color: var(--success) !important; }
.text-brand { color: var(--brand) !important; }
.text-accent { color: var(--accent) !important; }
.move-item { transition: background 0.15s ease, color 0.15s ease; user-select: none; }
.chip { padding: 5px 12px; border-radius: var(--radius-pill); background: var(--bg-subtle);
  border: 1px solid var(--panel-border); font-size: 13px; cursor: pointer; transition: all var(--transition); }
.chip:hover { border-color: var(--brand); }
.chip.active { background: var(--brand-soft); border-color: var(--brand); color: var(--brand); }

/* ------------------------------- forms --------------------------------- */
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: var(--space-3); }
.field label { font-size: 13px; color: var(--text-muted); }
input, select, textarea {
  background: var(--bg-subtle); border: 1px solid var(--panel-border); color: var(--text);
  border-radius: var(--radius-sm); padding: 9px var(--space-3); font-family: inherit; font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition); width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-soft);
}
input[type="checkbox"] { width: auto; accent-color: var(--brand); }
input.ltr { direction: ltr; text-align: left; }
.help { font-size: 12px; color: var(--text-dim); }
.error-text { font-size: 13px; color: var(--danger); }
.spinner-icon {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--panel-border);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: cv-spin 0.8s linear infinite;
}
@keyframes cv-spin {
  to { transform: rotate(360deg); }
}

/* ------------------------------- tables -------------------------------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--panel-border); border-radius: var(--radius); }
table, .table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table-sm th, .table-sm td { padding: 4px 8px; font-size: 13px; }
.alert { padding: 10px 14px; border-radius: var(--radius); font-size: 13.5px; border: 1px solid var(--panel-border); }
.alert-brand { background: rgba(59, 130, 246, 0.12); border-color: rgba(59, 130, 246, 0.35); color: var(--text); }
.alert-info { background: rgba(6, 182, 212, 0.12); border-color: rgba(6, 182, 212, 0.35); color: var(--text); }
.alert-success { background: rgba(16, 185, 129, 0.12); border-color: rgba(16, 185, 129, 0.35); color: var(--text); }
.alert-danger { background: rgba(239, 68, 68, 0.12); border-color: rgba(239, 68, 68, 0.35); color: var(--text); }
th, td { padding: 11px var(--space-3); text-align: start; border-bottom: 1px solid var(--panel-border); }
th { background: var(--bg-subtle); font-weight: 500; color: var(--text-muted); font-size: 13px;
  position: sticky; top: 0; z-index: 2; white-space: nowrap; }
tbody tr { transition: background var(--transition); }
tbody tr:hover { background: var(--bg-hover); }
tbody tr:last-child td { border-bottom: none; }
td.num, th.num { font-variant-numeric: tabular-nums; }

/* ------------------------------ progress ------------------------------- */
.progress { height: 8px; background: var(--bg-subtle); border-radius: var(--radius-pill); overflow: hidden; }
.progress > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--brand-strong));
  border-radius: var(--radius-pill); transition: width 420ms cubic-bezier(.22,.61,.36,1); }
.progress.accent > i { background: linear-gradient(90deg, var(--accent), #d99a2b); }
.bar-group { display: flex; gap: 3px; align-items: flex-end; height: 90px; }
.bar-group .bar { flex: 1; background: var(--bg-subtle); border-radius: 5px; min-height: 4px;
  transition: height 400ms ease, background var(--transition); position: relative; }
.bar-group .bar:hover { background: var(--brand); }

/* ------------------------------- board --------------------------------- */
.board-area { display: grid; gap: var(--space-4); grid-template-columns: minmax(0, 1fr); justify-items: center; }
.board-frame { position: relative; width: min(100%, 560px); }
.cv-board {
  display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(8, 1fr);
  aspect-ratio: 1 / 1; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  user-select: none; border: 1px solid var(--panel-border);
}
.cv-sq { position: relative; display: grid; place-items: center; cursor: default; }
.cv-sq.light { background: var(--board-light); }
.cv-sq.dark { background: var(--board-dark); }
.cv-sq.clickable { cursor: pointer; }
.cv-sq .coord { position: absolute; font-size: 9.5px; opacity: .68; color: #0d1117; font-weight: 500; }
[data-theme="light"] .cv-sq .coord { color: #2b3440; }
.cv-sq .coord.file { bottom: 2px; inset-inline-end: 4px; }
.cv-sq .coord.rank { top: 2px; inset-inline-start: 4px; }
.cv-piece { width: 88%; height: 88%; pointer-events: none; filter: drop-shadow(0 1px 1px rgba(0,0,0,.28)); }
.cv-sq.sel::after { content: ""; position: absolute; inset: 0; background: var(--board-highlight); }
.cv-sq.last::after { content: ""; position: absolute; inset: 0; background: var(--board-last); }
.cv-sq.hint::after { content: ""; position: absolute; inset: 0; background: var(--board-hint); }
.cv-sq.correct::after { content: ""; position: absolute; inset: 0; background: var(--board-correct); }
.cv-sq.wrong::after { content: ""; position: absolute; inset: 0; background: var(--board-wrong); }
.cv-sq.premove::after { content: ""; position: absolute; inset: 0; background: rgba(56, 189, 248, 0.45); border: 2.5px solid #38bdf8; z-index: 2; pointer-events: none; }
.cv-sq .dot { position: absolute; width: 26%; height: 26%; border-radius: 50%;
  background: rgba(20,30,40,.32); pointer-events: none; }
.cv-sq .ring { position: absolute; inset: 6%; border: 3.5px solid rgba(20,30,40,.3);
  border-radius: 50%; pointer-events: none; }
.cv-board.flipped { transform: rotate(180deg); }
.cv-board.flipped .cv-piece, .cv-board.flipped .coord { transform: rotate(180deg); }
.promotion { position: absolute; inset: 0; background: rgba(6,10,14,.7); display: grid; place-items: center;
  border-radius: var(--radius); z-index: 20; }
.promotion .choices { display: flex; gap: var(--space-2); background: var(--panel); padding: var(--space-3);
  border-radius: var(--radius); border: 1px solid var(--panel-border); }
.promotion button { background: var(--bg-subtle); border: 1px solid var(--panel-border); border-radius: var(--radius-sm);
  padding: var(--space-2); cursor: pointer; }
.promotion button:hover { border-color: var(--brand); }
.promotion svg { width: 46px; height: 46px; }

.player-strip { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-3);
  background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius);
  width: min(100%, 560px); }
.player-strip .avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--bg-subtle);
  display: grid; place-items: center; font-weight: 700; }
.clock { font-variant-numeric: tabular-nums; font-size: 20px; font-weight: 700; padding: 2px 12px;
  border-radius: var(--radius-sm); background: var(--bg-subtle); min-width: 86px; text-align: center; }
.clock.active { background: var(--brand-soft); color: var(--brand); }
.clock.low { background: var(--danger-soft); color: var(--danger); animation: pulse 1.4s infinite; }
@keyframes pulse { 50% { opacity: .55; } }

/* ------------------------------ puzzles -------------------------------- */
.puzzle-shell { display: grid; gap: var(--space-4); grid-template-columns: minmax(0, 1fr) 320px; align-items: start; }
@media (max-width: 1020px) { .puzzle-shell { grid-template-columns: 1fr; } }
.puzzle-steps { display: flex; gap: 6px; }
.puzzle-steps i { width: 26px; height: 6px; border-radius: var(--radius-pill); background: var(--bg-subtle); }
.puzzle-steps i.done { background: var(--success); }
.puzzle-steps i.current { background: var(--accent); }
.rating-pill { font-size: 20px; font-weight: 700; }

/* ------------------------------- modal --------------------------------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(6,10,14,.66); backdrop-filter: blur(3px);
  display: grid; place-items: center; z-index: var(--z-modal); padding: var(--space-4); animation: fade 160ms ease; }
@keyframes fade { from { opacity: 0; } }
.modal { background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); width: min(620px, 100%); max-height: 88vh; overflow: hidden;
  display: flex; flex-direction: column; animation: pop 200ms cubic-bezier(.22,.61,.36,1); }
@keyframes pop { from { transform: translateY(10px) scale(.98); opacity: 0; } }
.modal header { padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--panel-border);
  display: flex; align-items: center; justify-content: space-between; }
.modal header h3 { margin: 0; }
.modal .modal-body { padding: var(--space-5); overflow-y: auto; }
.modal .modal-footer { padding: var(--space-4) var(--space-5); border-top: 1px solid var(--panel-border);
  display: flex; gap: var(--space-2); justify-content: flex-end; }
.modal.wide { width: min(980px, 100%); }
.modal.narrow { width: min(440px, 100%); }

/* ------------------------ desktop windowing & live studio ----------------- */
.win-btn-group { display: flex; align-items: center; gap: 6px; direction: ltr; }
.win-btn { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--panel-alt); color: var(--text); display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; cursor: pointer; transition: all 120ms ease; line-height: 1; }
.win-btn:hover { background: var(--hover); }
.win-btn-min:hover { background: #f59e0b; color: #000; border-color: #f59e0b; }
.win-btn-max:hover { background: #10b981; color: #fff; border-color: #10b981; }
.win-btn-close:hover { background: #ef4444; color: #fff; border-color: #ef4444; }

.modal-window { resize: both; overflow: hidden; min-width: 680px; min-height: 520px; max-width: 98vw; max-height: 96vh; }
.modal-window-fullscreen { position: fixed !important; inset: 0 !important; width: 100vw !important; height: 100vh !important;
  max-width: 100vw !important; max-height: 100vh !important; border-radius: 0 !important; z-index: calc(var(--z-modal) + 20) !important;
  resize: none !important; margin: 0 !important; }

.floating-classroom-dock { position: fixed; bottom: 20px; left: 24px; z-index: var(--z-modal);
  background: var(--panel); border: 2px solid var(--brand); border-radius: 12px; box-shadow: var(--shadow-lg);
  padding: 10px 16px; display: flex; align-items: center; gap: 12px; animation: pop 200ms cubic-bezier(.22,.61,.36,1); }

@keyframes speakerPulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}
.speaker-active-dot { width: 10px; height: 10px; border-radius: 50%; background: #10b981; animation: speakerPulse 1.5s infinite; display: inline-block; }

/* ------------------------------- toasts -------------------------------- */
.toast-stack { position: fixed; inset-block-start: var(--space-4); inset-inline-start: var(--space-4);
  display: flex; flex-direction: column; gap: var(--space-2); z-index: var(--z-toast); max-width: 380px; }
.toast { background: var(--panel); border: 1px solid var(--panel-border); border-inline-start: 4px solid var(--info);
  border-radius: var(--radius-sm); padding: var(--space-3) var(--space-4); box-shadow: var(--shadow);
  display: flex; gap: var(--space-3); align-items: flex-start; animation: slide 240ms cubic-bezier(.22,.61,.36,1); }
@keyframes slide { from { transform: translateX(-14px); opacity: 0; } }
.toast.success { border-inline-start-color: var(--success); }
.toast.error { border-inline-start-color: var(--danger); }
.toast.warn { border-inline-start-color: var(--accent); }
.toast .t-icon { font-size: 17px; line-height: 1.4; }
.toast .t-body { flex: 1; }
.toast .t-title { font-weight: 500; font-size: 14px; }
.toast .t-msg { color: var(--text-muted); font-size: 13px; }

/* ---------------------------- command palette -------------------------- */
.palette { position: fixed; inset: 0; background: rgba(6,10,14,.62); backdrop-filter: blur(4px);
  z-index: var(--z-palette); display: flex; justify-content: center; padding-top: 12vh; animation: fade 140ms; }
.palette-box { background: var(--panel); border: 1px solid var(--panel-border); border-radius: var(--radius);
  width: min(620px, 92vw); box-shadow: var(--shadow-lg); overflow: hidden; height: fit-content; }
.palette-box input { border: none; border-bottom: 1px solid var(--panel-border); border-radius: 0;
  padding: var(--space-4); font-size: 16px; background: transparent; }
.palette-list { max-height: 46vh; overflow-y: auto; }
.palette-item { padding: 11px var(--space-4); display: flex; gap: var(--space-3); align-items: center;
  cursor: pointer; font-size: 14px; }
.palette-item .kbd { margin-inline-start: auto; }
.palette-item:hover, .palette-item.active { background: var(--bg-hover); }
.palette-item .ico { width: 22px; text-align: center; }
kbd { background: var(--bg-subtle); border: 1px solid var(--panel-border); border-radius: 6px;
  padding: 1px 7px; font-size: 11.5px; font-family: var(--font); color: var(--text-dim); }

/* ------------------------------ skeletons ------------------------------ */
.skeleton { background: linear-gradient(90deg, var(--bg-subtle) 25%, var(--bg-hover) 37%, var(--bg-subtle) 63%);
  background-size: 400% 100%; animation: shimmer 1.4s ease infinite; border-radius: var(--radius-sm); }
@keyframes shimmer { 0% { background-position: 100% 0; } 100% { background-position: 0 0; } }
.skeleton.text { height: 14px; margin-bottom: var(--space-2); }
.skeleton.title { height: 22px; width: 40%; margin-bottom: var(--space-3); }
.skeleton.block { height: 120px; }

/* ------------------------------ empty state ---------------------------- */
.empty { text-align: center; padding: var(--space-6) var(--space-4); color: var(--text-muted); }
.empty .art { font-size: 46px; margin-bottom: var(--space-3); opacity: .8; }
.empty h3 { margin-bottom: var(--space-2); }
.empty p { max-width: 460px; margin: 0 auto var(--space-4); }

/* ------------------------------ misc bits ------------------------------ */
.avatar-sm { width: 30px; height: 30px; border-radius: 50%; background: var(--bg-subtle); display: grid;
  place-items: center; font-size: 12.5px; font-weight: 700; overflow: hidden; flex: none; }
.divider { height: 1px; background: var(--panel-border); margin: var(--space-4) 0; }
.kv { display: flex; justify-content: space-between; gap: var(--space-3); padding: 7px 0;
  border-bottom: 1px dashed var(--panel-border); font-size: 13.5px; }
.kv:last-child { border-bottom: none; }
.kv .k { color: var(--text-dim); }
.tabs, .tab-bar { display: flex; gap: var(--space-1); border-bottom: 1px solid var(--panel-border); margin-bottom: var(--space-4);
  overflow-x: auto; }
.tab { padding: 10px var(--space-4); cursor: pointer; color: var(--text-muted); font-size: 14px;
  border-bottom: 2px solid transparent; white-space: nowrap; transition: all var(--transition); }
.tab:hover { color: var(--text); }
.tab.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 500; }
.scroll-x { overflow-x: auto; padding-bottom: var(--space-2); }
.radar { display: grid; place-items: center; }
.move-list { max-height: 340px; overflow-y: auto; font-size: 13.5px; }
.move-list .mv { display: flex; gap: var(--space-2); padding: 4px 6px; border-radius: 6px; }
.move-list .mv:hover { background: var(--bg-hover); }
.move-list .mv .n { color: var(--text-dim); min-width: 26px; }
.move-list .mv .san { min-width: 58px; }
.move-list .mv .san.best { color: var(--success); }
.move-list .mv .san.good { color: var(--text); }
.move-list .mv .san.inaccuracy { color: var(--accent); }
.move-list .mv .san.mistake { color: #e08b48; }
.move-list .mv .san.blunder { color: var(--danger); }
.eval-bar { width: 12px; height: 100%; background: #202a35; border-radius: var(--radius-pill); overflow: hidden;
  position: relative; }
.eval-bar i { position: absolute; inset-inline: 0; bottom: 0; background: #e8eef6; transition: height 320ms ease; }

/* Lichess-style Evaluation Bar & Board Layout */
.board-eval-wrap {
  display: flex;
  flex-direction: row;
  align-items: stretch;
  justify-content: center;
  gap: 12px;
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  direction: ltr; /* Keeps eval bar on the left of board like Lichess */
}
.board-eval-wrap .board-col {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 520px;
  display: flex;
  justify-content: center;
}
.board-eval-wrap .board-frame {
  width: 100%;
  max-width: 520px;
}
.eval-gauge {
  width: 28px;
  min-width: 28px;
  flex: 0 0 28px;
  background: #20262e;
  border-radius: 6px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  border: 1px solid var(--panel-border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  user-select: none;
  align-self: stretch;
}
.eval-gauge .eval-gauge-fill {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  background: #ffffff;
  transition: height 280ms cubic-bezier(.22,.61,.36,1);
  z-index: 1;
}
[data-theme="light"] .eval-gauge {
  background: #2b3440;
  border-color: #cbd5e1;
}
[data-theme="light"] .eval-gauge .eval-gauge-fill {
  background: #ffffff;
}
.eval-gauge .eval-gauge-score-top {
  position: relative;
  z-index: 2;
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  text-align: center;
  padding: 4px 1px 0 1px;
  line-height: 1.1;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
  font-family: monospace, sans-serif;
  letter-spacing: -0.5px;
}
.eval-gauge .eval-gauge-score-bottom {
  position: relative;
  z-index: 2;
  color: #111827;
  font-size: 11px;
  font-weight: 800;
  text-align: center;
  padding: 0 1px 4px 1px;
  line-height: 1.1;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
  font-family: monospace, sans-serif;
  letter-spacing: -0.5px;
}

/* Lichess-style Evaluation Header Strip (above chessboard) */
.eval-header-strip {
  width: 100%;
  max-width: 100%;
  margin: 0 auto 10px auto;
  background: var(--panel);
  color: var(--text);
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}
.eval-badge-score {
  font-family: monospace, inherit;
  font-weight: 800;
  font-size: 14.5px;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  direction: ltr;
}
.eval-badge-white {
  background: #ffffff;
  color: #0f172a;
  border: 1.5px solid #cbd5e1;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
.eval-badge-black {
  background: #1e293b;
  color: #f8fafc;
  border: 1.5px solid #475569;
  box-shadow: 0 1px 3px rgba(0,0,0,0.25);
}
.eval-badge-equal {
  background: var(--bg-subtle);
  color: var(--text);
  border: 1px solid var(--panel-border);
}

.subvariation-bar {
  background: var(--brand-soft);
  color: var(--brand);
  border: 1px solid var(--brand);
  border-radius: 8px;
  padding: 8px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}
.analysis-top-row {
  display: grid;
  grid-template-columns: minmax(0, 520px) 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 900px) {
  .analysis-top-row {
    grid-template-columns: 1fr;
  }
}
.mistake-chip {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  user-select: none;
}
.mistake-chip:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.mistake-chip.blunder { background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }
.mistake-chip.mistake { background: rgba(249, 115, 22, 0.15); color: #f97316; border: 1px solid rgba(249, 115, 22, 0.3); }
.mistake-chip.inaccuracy { background: rgba(234, 179, 8, 0.15); color: #eab308; border: 1px solid rgba(234, 179, 8, 0.3); }
.mistake-chip.good { background: rgba(34, 197, 94, 0.15); color: var(--success); border: 1px solid rgba(34, 197, 94, 0.3); }
.eval-graph { width: 100%; height: 120px; }
.leader-row { display: flex; align-items: center; gap: var(--space-3); padding: 8px 0; }
.leader-row .rank { width: 28px; text-align: center; color: var(--text-dim); font-variant-numeric: tabular-nums; }
.leader-row .rank.gold { color: var(--accent); font-weight: 700; }
.offline-banner { background: var(--accent-soft); color: var(--accent); padding: 6px var(--space-4);
  font-size: 13px; text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 4px; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--panel-border); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dim); }

/* ------------------------------ responsive ----------------------------- */
@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset-inline-start: 0; inset-block: 0; width: 268px; z-index: 60;
    transform: translateX(105%); transition: transform 240ms cubic-bezier(.22,.61,.36,1); }
  [dir="rtl"] .sidebar { transform: translateX(-105%); }
  .sidebar.open { transform: none; }
  .content { padding: var(--space-4) var(--space-3); }
  .topbar { padding: 0 var(--space-3); }
  .mobile-only { display: inline-flex !important; }
}
.mobile-only { display: none; }
.sidebar-scrim { position: fixed; inset: 0; background: rgba(6,10,14,.5); z-index: 55; }
@media print { .sidebar, .topbar, .btn { display: none !important; } }

/* ---------------------------- layout utilities --------------------------- */
.row.wrap { flex-wrap: wrap; }
.row.gap-lg { gap: var(--space-4); }
.stack.align-start { align-items: flex-start; }
.grid.grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
@media (max-width: 1100px) { .grid.grid-5 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 700px) { .grid.grid-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* سوی انیمیشن توجّه برای بخشی که از مسیر فرعی هدف گرفته می‌شود */
.flash { animation: cv-flash 1.5s ease; }
@keyframes cv-flash {
  0%, 100% { box-shadow: var(--shadow-card, none); }
  20% { box-shadow: 0 0 0 3px var(--brand-soft), 0 12px 32px rgba(0,0,0,.18); }
}

/* کارت‌های قابل کلیک در صفحه‌های فهرست */
a.card, .card a.card, .card-link { color: inherit; text-decoration: none; display: block; }
.card-title { font-weight: 600; margin-bottom: 8px; }

/* جدول‌های ریسپانسیو: در صفحه‌های باریک با اسکرول افقی خوانا می‌مانند */
.table-wrap { overflow-x: auto; }
.table-wrap table { min-width: 560px; }

/* متن درس‌نامه/دانشنامه */
.lesson-body { line-height: 2; font-size: 15px; color: var(--text); }
.lesson-body h2, .lesson-body h3 { margin: var(--space-4) 0 var(--space-2); }
.lesson-body p { margin: 0 0 var(--space-3); }
.lesson-body ul, .lesson-body ol { padding-inline-start: 20px; margin: 0 0 var(--space-3); }
.lesson-body code { background: var(--panel-2, rgba(255,255,255,.06)); padding: 1px 6px; border-radius: 6px; font-size: 13px; }
.lesson-body blockquote { margin: 0 0 var(--space-3); padding: 8px 14px; border-inline-start: 3px solid var(--brand);
  background: var(--brand-soft); border-radius: 10px; }

/* ------------------------------ banners -------------------------------- */
/* نوار اطلاع‌رسانی درون‌کارتی: پیام موتور تحلیل، هشدار وضعیت، راهنمای کوتاه */
.banner {
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--panel-border); border-radius: var(--radius);
  background: var(--bg-subtle); color: var(--text);
}
.banner .small { color: var(--text-muted); }
.banner-info { background: var(--info-soft); border-color: color-mix(in srgb, var(--info) 35%, transparent); }
.banner-brand { background: var(--brand-soft); border-color: color-mix(in srgb, var(--brand) 35%, transparent); }
.banner-warn { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.banner-success { background: var(--success-soft); border-color: color-mix(in srgb, var(--success) 35%, transparent); }
.banner-danger { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 35%, transparent); }

.font-bold { font-weight: 700 !important; }
.mv-cell { user-select: none; }
.mv-cell:hover { background: var(--bg-hover) !important; }

/* تحلیل حرکات: زیرمجموعه و شاخه‌های پیشنهادی در جدول حرکات */
.subline-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--bg-subtle);
  color: var(--text-dim);
  margin-top: 3px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  line-height: 1.25;
}
.subline-tag:hover {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: var(--brand);
}
.subline-tag.blunder { color: var(--danger); background: var(--danger-soft); }
.subline-tag.mistake { color: var(--accent); background: var(--accent-soft); }
.subline-tag.inaccuracy { color: #d97706; background: rgba(245, 158, 11, 0.12); }
.subline-tag.best { color: var(--success); background: var(--success-soft); }

/* تفکیک آمار تحلیلی و دقت بازیکنان سفید و سیاه */
.player-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 680px) {
  .player-stat-grid { grid-template-columns: 1fr; }
}
.player-stat-card {
  background: var(--bg-subtle);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.player-stat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 6px;
  font-weight: 700;
  font-size: 14px;
}

/* دکمه ضامن پیکان‌های تحلیلی روی تخته */
.arrow-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  transition: all 0.15s;
}
.arrow-toggle-btn.active {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: var(--brand);
  font-weight: 600;
}

/* ------------------------------ utilities ------------------------------ */
.hidden { display: none !important; }