/* ============================================================
   بدنساز هوشمند — Round 2 Styling Upgrade
   Theme toggle (light/dark), animations, micro-interactions,
   print styles, charts, skeletons, glass effects
   ============================================================ */

/* ============================================================
   THEME TOGGLE — LIGHT MODE
   ============================================================ */
:root {
  --transition: 0.3s cubic-bezier(.4,0,.2,1);
}
html[data-theme="light"] {
  --bg:        #f6f7fb;
  --bg-2:      #ffffff;
  --surf1:     #ffffff;
  --surf2:     #f1f3f9;
  --surf3:     #e7eaf3;
  --border:    #dde1ed;
  --border2:   #c8cedd;
  --text:      #1a1d2e;
  --text-2:    #4a4f63;
  --muted:     #6b7186;
  --dim:       #9aa0b5;
  --gold:      #b8860b;
  --gold2:     #d4a843;
  --gold-dim:  rgba(184,134,11,.10);
  --gold-glow: rgba(184,134,11,.25);
  --shadow:    0 8px 30px -8px rgba(20,30,60,.12);
  --shadow-gold: 0 8px 30px -8px rgba(184,134,11,.30);
  color-scheme: light;
}
html[data-theme="light"] body { background: var(--bg); }
html[data-theme="light"] .site-header {
  background: rgba(255,255,255,.85);
  border-bottom-color: var(--border);
}
html[data-theme="light"] .hero {
  background:
    radial-gradient(ellipse 80% 50% at 80% 0%, rgba(184,134,11,.10), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, #f6f7fb 100%);
}
html[data-theme="light"] .adv-section { background: var(--bg-2); }
html[data-theme="light"] .phone-mock { background: linear-gradient(160deg, var(--surf1), var(--surf2)); border-color: var(--border2); }
html[data-theme="light"] .phone-screen { background: var(--bg-2); }
html[data-theme="light"] .site-footer { background: var(--surf1); }
html[data-theme="light"] .feature-card:hover,
html[data-theme="light"] .testi-card { box-shadow: var(--shadow); }

/* Theme toggle button */
.theme-toggle {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--surf2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: var(--transition); color: var(--gold);
  font-size: 18px; flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--gold); transform: rotate(15deg); }
.theme-toggle .sun { display: none; }
.theme-toggle .moon { display: block; }
html[data-theme="light"] .theme-toggle .sun { display: block; }
html[data-theme="light"] .theme-toggle .moon { display: none; }
@media (max-width: 900px) {
  .theme-toggle { order: -1; }
}

/* ============================================================
   ANIMATIONS — scroll reveal, counters, shimmer
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
@keyframes pulseGold {
  0%, 100% { box-shadow: 0 0 0 0 rgba(212,168,67,.4); }
  50% { box-shadow: 0 0 0 12px rgba(212,168,67,0); }
}
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}
@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Reveal on scroll */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.7,.2,1);
}
[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .phone-mock, .floating-chip { animation: none !important; }
}

/* Stagger children */
[data-reveal-delay="1"] { transition-delay: .1s; }
[data-reveal-delay="2"] { transition-delay: .2s; }
[data-reveal-delay="3"] { transition-delay: .3s; }
[data-reveal-delay="4"] { transition-delay: .4s; }
[data-reveal-delay="5"] { transition-delay: .5s; }

/* Animated gradient text */
.gradient-text {
  background: linear-gradient(120deg, var(--gold2), var(--gold), #e8c070, var(--gold));
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 4s ease infinite;
}

/* Hero stat counter */
.hero-stat .num { font-variant-numeric: tabular-nums; }

/* Shimmer skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--surf2) 25%, var(--surf3) 50%, var(--surf2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 8px;
  color: transparent;
  user-select: none;
}

/* ============================================================
   MICRO-INTERACTIONS — buttons, cards, links
   ============================================================ */
.btn { position: relative; overflow: hidden; transition: var(--transition); }
.btn::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(255,255,255,.18), transparent 40%);
  opacity: 0; transition: opacity .3s; pointer-events: none;
}
.btn:hover::after { opacity: 1; }

.feature-card { transition: transform .35s cubic-bezier(.2,.7,.2,1), border-color .3s, box-shadow .3s; }
.feature-card:hover { box-shadow: var(--shadow); }
.feature-card .feature-icon { transition: transform .35s; }
.feature-card:hover .feature-icon { transform: scale(1.08) rotate(-4deg); }

.stat-card { transition: transform .3s, border-color .3s; position: relative; }
.stat-card::before {
  content: ''; position: absolute; top: 0; right: 0; width: 80px; height: 80px;
  background: radial-gradient(circle, var(--gold-dim), transparent 70%);
  opacity: 0; transition: opacity .3s; pointer-events: none;
}
.stat-card:hover { transform: translateY(-3px); border-color: rgba(212,168,67,.35); }
.stat-card:hover::before { opacity: 1; }

/* nav link underline animation */
.site-nav > a { position: relative; }
.site-nav > a:not(.nav-cta)::after {
  content: ''; position: absolute; bottom: 4px; right: 14px; left: 14px;
  height: 2px; background: var(--gold);
  transform: scaleX(0); transform-origin: center; transition: transform .25s;
}
.site-nav > a:not(.nav-cta):hover::after,
.site-nav > a:not(.nav-cta).active::after { transform: scaleX(1); }

/* ============================================================
   PROGRESS TRACKING — workout day check-off
   ============================================================ */
.day-check-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--surf3); border: 1px solid var(--border2);
  color: var(--muted); padding: 8px 14px; border-radius: 10px;
  font-size: 12px; font-weight: 700; cursor: pointer;
  transition: var(--transition); font-family: inherit;
}
.day-check-btn:hover { border-color: var(--gold); color: var(--gold); }
.day-check-btn.done {
  background: rgba(62,188,120,.13); border-color: var(--success); color: var(--success);
}
.day-check-btn.done .ic { animation: pulseGold 2s infinite; }

.prog-progress-bar {
  display: flex; align-items: center; gap: 12px;
  background: var(--surf2); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px; margin-bottom: 18px;
}
.ppb-track { flex: 1; height: 8px; background: var(--surf3); border-radius: 6px; overflow: hidden; }
.ppb-fill {
  height: 100%; background: linear-gradient(90deg, var(--gold), var(--success));
  border-radius: 6px; transition: width .6s cubic-bezier(.2,.7,.2,1);
}
.ppb-label { font-size: 13px; font-weight: 700; color: var(--gold); white-space: nowrap; }

.streak-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(224,92,74,.13); border: 1px solid rgba(224,92,74,.3);
  color: var(--push); padding: 5px 12px; border-radius: 20px;
  font-size: 12px; font-weight: 700;
}

/* Day tab — completed indicator */
.prog-tab .check-dot {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--success); color: #fff;
  display: none; align-items: center; justify-content: center;
  font-size: 9px; font-weight: 900; margin-right: 2px;
  border: 2px solid var(--bg);
}
.prog-tab.completed .check-dot { display: inline-flex; }

/* ============================================================
   BODY MEASUREMENT TRACKER — chart + form
   ============================================================ */
.meas-chart-wrap {
  background: var(--surf1); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px; margin-bottom: 22px;
}
.meas-chart-svg { width: 100%; height: 260px; display: block; }
.meas-chart-svg .grid-line { stroke: var(--border); stroke-width: 1; }
.meas-chart-svg .axis-text { fill: var(--muted); font-size: 11px; font-family: inherit; }
.meas-chart-svg .area-fill { fill: url(#areaGrad); opacity: .35; }
.meas-chart-svg .line-path { stroke: var(--gold); stroke-width: 2.5; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.meas-chart-svg .data-point { fill: var(--gold); stroke: var(--bg); stroke-width: 2; cursor: pointer; transition: r .2s; }
.meas-chart-svg .data-point:hover { r: 7; }
.meas-chart-svg .hover-tip { fill: var(--surf3); stroke: var(--gold); }

.meas-stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 22px; }
.meas-stat {
  background: var(--surf1); border: 1px solid var(--border); border-radius: var(--r-md);
  padding: 18px; text-align: center;
}
.meas-stat .lbl { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.meas-stat .val { font-size: 22px; font-weight: 900; color: var(--gold); }
.meas-stat .delta { font-size: 11px; margin-top: 4px; }
.meas-stat .delta.up { color: var(--success); }
.meas-stat .delta.down { color: var(--push); }

.meas-table { width: 100%; border-collapse: collapse; }
.meas-table th, .meas-table td { padding: 10px 12px; text-align: center; border-bottom: 1px solid var(--border); font-size: 13px; }
.meas-table th { color: var(--muted); font-size: 11px; font-weight: 700; text-transform: uppercase; }
.meas-table td { color: var(--text-2); }

/* ============================================================
   CHARTS (admin dashboard)
   ============================================================ */
.chart-card {
  background: var(--surf1); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px;
}
.chart-card h3 { font-size: 15px; font-weight: 800; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
.bar-chart { display: flex; align-items: flex-end; gap: 10px; height: 180px; padding-top: 10px; }
.bar-col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 8px; height: 100%; justify-content: flex-end; }
.bar-fill {
  width: 100%; max-width: 42px;
  background: linear-gradient(180deg, var(--gold), rgba(212,168,67,.4));
  border-radius: 6px 6px 0 0; transition: height .8s cubic-bezier(.2,.7,.2,1);
  position: relative; min-height: 4px;
}
.bar-fill:hover { background: linear-gradient(180deg, var(--gold2), var(--gold)); }
.bar-fill .bar-val {
  position: absolute; top: -22px; left: 50%; transform: translateX(-50%);
  font-size: 11px; font-weight: 700; color: var(--gold); opacity: 0; transition: opacity .2s;
}
.bar-col:hover .bar-val { opacity: 1; }
.bar-label { font-size: 11px; color: var(--muted); }

.donut-wrap { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.donut-svg { width: 160px; height: 160px; flex-shrink: 0; }
.donut-svg circle { fill: none; stroke-width: 18; transition: stroke-dashoffset 1s cubic-bezier(.2,.7,.2,1); }
.donut-center { font-size: 26px; font-weight: 900; fill: var(--gold); text-anchor: middle; dominant-baseline: middle; }
.donut-legend { display: flex; flex-direction: column; gap: 10px; }
.donut-legend .li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-2); }
.donut-legend .sw { width: 14px; height: 14px; border-radius: 4px; flex-shrink: 0; }

/* ============================================================
   PRINT STYLES — program export
   ============================================================ */
@media print {
  body { background: #fff !important; color: #000 !important; font-size: 11px; }
  .site-header, .site-footer, .prog-nav-wrap, .scroll-top, .prog-slim-top, .day-check-btn,
  .prog-progress-bar, .cta-banner, .no-print { display: none !important; }
  .prog-wrap { background: #fff !important; }
  .prog-hero { background: #fff !important; border-bottom: 2px solid #000; padding: 10px 0; }
  .prog-hero h1, .prog-eyebrow, .prog-sub, .prog-chip .cv { color: #000 !important; }
  .prog-chip { border: 1px solid #999 !important; background: #f5f5f5 !important; }
  .prog-sec { display: block !important; page-break-after: always; }
  .prog-sec:last-child { page-break-after: auto; }
  .dh, .tw, .nc, .wo, .mcov, .ic-card { border: 1px solid #999 !important; background: #fff !important; }
  table.prog-tbl { min-width: 0 !important; }
  table.prog-tbl th { background: #eee !important; color: #000 !important; }
  .ex-name-fa, .ex-name-en, .tip, td, th, h1, h2, h3, h4, p { color: #000 !important; }
  a.ex-link { color: #000 !important; text-decoration: underline; border: none !important; }
  .ph-title { color: #444 !important; border-color: #999 !important; }
  .v-badge, .stag, .ctag, .atag { border: 1px solid #999 !important; background: #eee !important; color: #000 !important; }
}

/* ============================================================
   PWA install prompt
   ============================================================ */
.pwa-prompt {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(120%);
  background: var(--surf1); border: 1px solid rgba(212,168,67,.3); border-radius: 16px;
  padding: 16px 20px; box-shadow: var(--shadow-gold); z-index: 2000;
  display: flex; align-items: center; gap: 14px; max-width: 420px; width: calc(100% - 40px);
  transition: transform .4s cubic-bezier(.2,.7,.2,1);
}
.pwa-prompt.show { transform: translateX(-50%) translateY(0); }
.pwa-prompt .ic { font-size: 32px; }
.pwa-prompt .tx { flex: 1; }
.pwa-prompt .tx h5 { font-size: 14px; font-weight: 800; margin-bottom: 2px; }
.pwa-prompt .tx p { font-size: 12px; color: var(--muted); }
.pwa-prompt .actions { display: flex; gap: 8px; }
.pwa-prompt .close-x { background: none; border: none; color: var(--muted); font-size: 18px; cursor: pointer; padding: 4px; }

/* ============================================================
   TOAST notifications
   ============================================================ */
.toast-wrap {
  position: fixed; top: 80px; left: 50%; transform: translateX(-50%);
  z-index: 2500; display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
  background: var(--surf1); border: 1px solid var(--border2); border-right: 4px solid var(--gold);
  padding: 12px 18px; border-radius: 12px; font-size: 13px; font-weight: 600;
  box-shadow: var(--shadow); animation: slideInRight .3s ease;
  display: flex; align-items: center; gap: 10px; pointer-events: auto; min-width: 240px;
}
.toast.success { border-right-color: var(--success); }
.toast.error { border-right-color: var(--danger); }
.toast.info { border-right-color: var(--gold); }
.toast .ic { font-size: 18px; }

/* ============================================================
   ACTIVITY FEED (dashboard)
   ============================================================ */
.activity-feed { display: flex; flex-direction: column; gap: 0; }
.activity-item {
  display: flex; gap: 14px; padding: 14px 0;
  border-bottom: 1px solid var(--border); position: relative;
}
.activity-item:last-child { border-bottom: none; }
.activity-item .ai-dot {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: var(--surf3); display: flex; align-items: center; justify-content: center; font-size: 16px;
  position: relative;
}
.activity-item:not(:last-child) .ai-dot::after {
  content: ''; position: absolute; top: 36px; left: 50%; transform: translateX(-50%);
  width: 2px; height: calc(100% - 18px); background: var(--border);
}
.activity-item .ai-tx { flex: 1; padding-top: 4px; }
.activity-item .ai-tx .t { font-size: 13.5px; font-weight: 600; color: var(--text); }
.activity-item .ai-tx .d { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }
.pagination a, .pagination span {
  min-width: 38px; height: 38px; padding: 0 12px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  background: var(--surf2); border: 1px solid var(--border); color: var(--text-2);
  font-size: 13px; font-weight: 600; transition: var(--transition);
}
.pagination a:hover { border-color: var(--gold); color: var(--gold); }
.pagination .current { background: var(--gold); color: #1a1208; border-color: var(--gold); }

/* ============================================================
   PROGRESS RING (small circular progress)
   ============================================================ */
.progress-ring { transform: rotate(-90deg); }
.progress-ring circle { fill: none; stroke-width: 6; transition: stroke-dashoffset 1s cubic-bezier(.2,.7,.2,1); }
.progress-ring .bg-ring { stroke: var(--surf3); }
.progress-ring .fg-ring { stroke: var(--gold); stroke-linecap: round; }

/* ============================================================
   SEARCH BAR (admin)
   ============================================================ */
.search-bar {
  position: relative; margin-bottom: 16px;
}
.search-bar input {
  width: 100%; padding: 11px 16px 11px 42px; background: var(--surf2);
  border: 1px solid var(--border2); border-radius: 11px; color: var(--text); font-size: 14px;
  font-family: inherit; transition: var(--transition);
}
.search-bar input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px var(--gold-dim); }
.search-bar .ic { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 16px; pointer-events: none; }

/* ============================================================
   TAB PILLS (sub-navigation)
   ============================================================ */
.tab-pills { display: flex; gap: 6px; background: var(--surf2); padding: 5px; border-radius: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.tab-pills a, .tab-pills button {
  padding: 8px 16px; border-radius: 8px; font-size: 13px; font-weight: 600;
  background: none; border: none; color: var(--muted); cursor: pointer; transition: var(--transition); font-family: inherit;
}
.tab-pills a:hover, .tab-pills button:hover { color: var(--text); }
.tab-pills a.active, .tab-pills button.active { background: var(--gold); color: #1a1208; }

/* ============================================================
   EMPTY STATE ILLUSTRATION
   ============================================================ */
.empty-illust {
  width: 120px; height: 120px; margin: 0 auto 18px;
  border-radius: 50%; background: var(--surf2); border: 1px dashed var(--border2);
  display: flex; align-items: center; justify-content: center; font-size: 48px; opacity: .6;
}

/* ============================================================
   MOBILE STICKY CTA
   ============================================================ */
.mobile-cta {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 500;
  background: rgba(9,9,15,.95); backdrop-filter: blur(12px);
  border-top: 1px solid var(--border); padding: 12px 16px;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
}
.mobile-cta .btn { width: 100%; }
@media (max-width: 640px) {
  .mobile-cta.show { display: block; }
  body { padding-bottom: 70px; }
}

/* ============================================================
   GLASS CARD (frosted)
   ============================================================ */
.glass-card {
  background: rgba(24,24,32,.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--r);
}

/* ============================================================
   DIVIDER WITH TEXT
   ============================================================ */
.divider-text {
  display: flex; align-items: center; gap: 14px; color: var(--muted); font-size: 12px; margin: 20px 0;
}
.divider-text::before, .divider-text::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}

/* ============================================================
   BADGE IMPROVEMENTS
   ============================================================ */
.badge-tag { transition: var(--transition); }
.badge-tag.live {
  position: relative; padding-left: 18px;
}
.badge-tag.live::before {
  content: ''; position: absolute; left: 8px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; border-radius: 50%; background: currentColor;
  animation: pulseGold 1.5s infinite;
}