/* ==========================================================================
   AI Gym Cloud v5.2 — Cloudflare Pages Production Stylesheet (styles.css)
   Pure SVG Vector UI/UX • Kinetic Dark Glass & Daylight High-Contrast Themes
   ========================================================================== */

:root,
[data-theme="dark"] {
  --bg-canvas: #070B10;
  --bg-canvas-gradient: radial-gradient(circle at 18% 10%, #122032 0%, #070B10 58%, #040609 100%);
  --bg-surface: #121721;
  --bg-card: rgba(24, 30, 42, 0.82);
  --bg-elevated: #181E2A;
  --bg-subtle: rgba(255, 255, 255, 0.05);
  --border-glass: #283246;
  --border-subtle: rgba(255, 255, 255, 0.11);
  --text-primary: #F5F7FA;
  --text-secondary: #98A4B8;
  --text-muted: #8492A8;
  --accent-primary: #9ED756;
  --accent-on-primary: #071204;
  --accent-secondary: #5CE1E6;
  --status-success: #30D158;
  --status-warning: #FFB020;
  --status-danger: #FF5A52;
  --shadow-elev: 0 14px 36px rgba(0, 0, 0, 0.52);
  --hud-pill-bg: rgba(7, 11, 16, 0.84);
}

[data-theme="light"] {
  --bg-canvas: #F4F7F4;
  --bg-canvas-gradient: radial-gradient(circle at 18% 10%, #E2ECE2 0%, #F4F7F4 60%, #EBF0EB 100%);
  --bg-surface: #FFFFFF;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-elevated: #EAF0EA;
  --bg-subtle: rgba(15, 23, 42, 0.05);
  --border-glass: #CBD5E1;
  --border-subtle: rgba(15, 23, 42, 0.12);
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #526077;
  --accent-primary: #2E5A12;
  --accent-on-primary: #FFFFFF;
  --accent-secondary: #0369A1;
  --status-success: #15803D;
  --status-warning: #B45309;
  --status-danger: #B91C1C;
  --shadow-elev: 0 12px 30px rgba(15, 23, 42, 0.10);
  --hud-pill-bg: rgba(15, 23, 42, 0.84);
}

:root {
  --motion-silk: 240ms cubic-bezier(0.22, 1, 0.36, 1);
  --motion-spring: 380ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --motion-snap: 120ms cubic-bezier(0.4, 0, 0.2, 1);
  --radius-xl: 26px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Plus Jakarta Sans", "SF Pro Display", "Inter", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg-canvas-gradient);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 16px 28px;
  transition: background var(--motion-silk), color var(--motion-silk);
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
}

svg.icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  flex-shrink: 0;
}

svg.icon-lg {
  width: 20px;
  height: 20px;
}

/* Top Cloudflare Edge Header Bar */
.top-workbench {
  width: 100%;
  max-width: 1240px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  backdrop-filter: saturate(180%) blur(22px);
  -webkit-backdrop-filter: saturate(180%) blur(22px);
  padding: 10px 16px;
  border-radius: 18px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-elev);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand-badge {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(158, 215, 86, 0.16);
  border: 1.5px solid var(--accent-primary);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-title h1 {
  font-size: 14.5px;
  font-weight: 800;
  letter-spacing: -0.25px;
}

.brand-title p {
  font-size: 11.5px;
  color: var(--text-secondary);
}

.simulator-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.chip-btn {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  padding: 6px 11px;
  min-height: 34px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: all var(--motion-snap);
}

.chip-btn:hover {
  border-color: var(--accent-primary);
}

.chip-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--accent-on-primary);
  font-weight: 700;
}

.chip-select {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  padding: 5px 10px;
  min-height: 34px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  cursor: pointer;
}

/* Main Workspace Grid */
.workspace-grid {
  width: 100%;
  max-width: 1240px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 22px;
  align-items: start;
}

@media (max-width: 960px) {
  .workspace-grid {
    grid-template-columns: 1fr;
    justify-items: center;
  }
}

.device-shell-wrapper {
  position: relative;
  padding: 4px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 412px;
  max-width: 100%;
  height: 856px;
  background: var(--bg-canvas);
  border-radius: 52px;
  border: 10px solid #282C34;
  box-shadow: 0 0 0 2px #545860, 0 28px 68px rgba(0, 0, 0, 0.55);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  transition: all var(--motion-silk);
}

.phone-frame.viewport-320 {
  width: 336px;
  border-width: 8px;
  border-radius: 42px;
}

.phone-frame.viewport-desktop {
  width: 720px;
  height: 800px;
  border-radius: 24px;
  border-width: 6px;
}

.app-shell-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.phone-frame.viewport-desktop .app-shell-main {
  flex-direction: row;
}

.desktop-nav-rail {
  display: none;
  width: 88px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-glass);
  flex-direction: column;
  align-items: center;
  padding: 12px 6px;
  gap: 8px;
  flex-shrink: 0;
}

.phone-frame.viewport-desktop .desktop-nav-rail {
  display: flex;
}

.phone-frame.viewport-desktop .ios-bottom-dock {
  display: none;
}

.ios-status-header {
  height: 44px;
  padding: 8px 18px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border-bottom: 0.5px solid var(--border-subtle);
  flex-shrink: 0;
  z-index: 20;
}

.ios-time {
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 5px;
}

.cf-pill {
  font-size: 9px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(246, 130, 31, 0.18);
  color: #F6821F;
  border: 1px solid #F6821F;
}

.dynamic-island {
  min-width: 138px;
  height: 28px;
  padding: 0 11px;
  background: #05070B;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  cursor: pointer;
}

.di-left {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10.5px;
  font-weight: 700;
  color: #F5F7FA;
}

.di-lens {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #3B5980, #090D16 70%);
}

.di-privacy-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #30D158;
  box-shadow: 0 0 8px #30D158;
}

.app-bar {
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-glass);
  flex-shrink: 0;
}

.app-bar-title {
  font-size: 14.5px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 7px;
}

.model-status-pill {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 99px;
  background: rgba(48, 209, 88, 0.15);
  color: var(--status-success);
  border: 1px solid var(--status-success);
  font-weight: 700;
}

.phone-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px 13px 18px;
  background: var(--bg-canvas);
}

.exercise-pills {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: none;
}

.exercise-pills::-webkit-scrollbar {
  display: none;
}

.ex-pill {
  background: var(--bg-surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
  padding: 7px 12px;
  min-height: 36px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.ex-pill.active {
  background: var(--accent-primary);
  color: var(--accent-on-primary);
  border-color: var(--accent-primary);
  font-weight: 800;
}

/* Camera Viewport & SVG Skeleton Overlay */
.camera-viewport {
  position: relative;
  width: 100%;
  height: 290px;
  background: radial-gradient(circle at 50% 38%, #152334, #06090E);
  border-radius: var(--radius-xl);
  border: 2px solid var(--status-success);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
  box-shadow: var(--shadow-elev);
}

#physicalWebcamVideo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
  display: none;
}

#physicalWebcamVideo.mirrored {
  transform: scaleX(-1);
}

#poseSkeletonSvg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
}

#bboxOverlayLayer {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.hud-top-bar {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 6;
  pointer-events: none;
}

.hud-pill {
  background: var(--hud-pill-bg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 700;
  color: #F5F7FA;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.hud-score-pill {
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  background: rgba(48, 209, 88, 0.22);
  border: 1px solid #30D158;
  color: #30D158;
  backdrop-filter: blur(10px);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.hud-bottom-bar {
  position: absolute;
  bottom: 10px;
  left: 10px;
  right: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  z-index: 6;
}

.cam-action-btn {
  background: rgba(8, 12, 18, 0.84);
  backdrop-filter: blur(12px);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 6px 11px;
  min-height: 34px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-radius: var(--radius-lg);
  padding: 13px 14px;
  margin-bottom: 10px;
  box-shadow: var(--shadow-elev);
}

.posture-coach-header {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 10px;
}

.posture-status-icon {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(48, 209, 88, 0.16);
  color: var(--status-success);
  border: 1px solid var(--status-success);
}

.posture-headline {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: -0.2px;
  line-height: 1.3;
}

.posture-subtip {
  font-size: 11.5px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.biomech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 7px;
  margin-bottom: 10px;
}

.biomech-pill {
  background: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 7px 8px;
}

.biomech-label {
  font-size: 10px;
  color: var(--text-secondary);
  font-weight: 600;
}

.biomech-val {
  font-size: 14px;
  font-weight: 800;
  margin-top: 2px;
  color: var(--accent-secondary);
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.kpi-box {
  background: var(--bg-subtle);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 11px;
}

.kpi-val {
  font-size: 17px;
  font-weight: 800;
  color: var(--accent-primary);
  margin-top: 2px;
}

.kpi-label {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
}

.btn-primary {
  width: 100%;
  min-height: 44px;
  background: var(--accent-primary);
  color: var(--accent-on-primary);
  border: none;
  padding: 10px 14px;
  border-radius: 12px;
  font-weight: 800;
  font-size: 12.5px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin-top: 6px;
}

.btn-outline {
  width: 100%;
  min-height: 42px;
  background: var(--bg-subtle);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  padding: 8.5px 12px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 6px;
}

/* 6-Box OTP Digit Input Grid */
.otp-pin-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
  margin: 12px 0;
}

.otp-digit-box {
  width: 100%;
  height: 50px;
  text-align: center;
  font-size: 20px;
  font-weight: 900;
  border-radius: 12px;
  border: 1.5px solid var(--border-glass);
  background: var(--bg-surface);
  color: var(--accent-primary);
  outline: none;
}

.otp-digit-box:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(158, 215, 86, 0.25);
}

.form-input {
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border-glass);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 12px;
  margin-bottom: 7px;
}

.bbox-mini {
  position: absolute;
  border: 1.5px solid rgba(92, 225, 230, 0.8);
  background: rgba(7, 11, 16, 0.76);
  border-radius: 8px;
  padding: 2px 7px;
  font-size: 9.5px;
  font-weight: 700;
  color: #F5F7FA;
  pointer-events: none;
}

.ios-bottom-dock {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-glass);
  flex-shrink: 0;
}

.bottom-nav {
  height: 56px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  padding: 4px 6px 0;
}

.nav-item {
  background: none;
  border: none;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  font-size: 10px;
  font-weight: 600;
  min-height: 48px;
  border-radius: 10px;
  cursor: pointer;
}

.nav-item.active {
  color: var(--accent-primary);
  font-weight: 800;
}

.ios-home-indicator-row {
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 3px;
}

.ios-home-pill {
  width: 124px;
  height: 4px;
  border-radius: 999px;
  background: var(--text-secondary);
  opacity: 0.45;
}

.inspector-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.terminal-box {
  background: #060A10;
  border: 1px solid #283246;
  border-radius: 12px;
  padding: 10px 12px;
  font-family: "JetBrains Mono", "SF Mono", Consolas, monospace;
  font-size: 11px;
  color: #5CE1E6;
  line-height: 1.5;
  overflow-x: auto;
}

.badge {
  font-size: 10.5px;
  padding: 3px 8px;
  border-radius: 99px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.badge.green {
  background: rgba(48, 209, 88, 0.15);
  color: var(--status-success);
  border-color: var(--status-success);
}

.badge.cyan {
  background: rgba(92, 225, 230, 0.14);
  color: var(--accent-secondary);
  border-color: var(--accent-secondary);
}

.badge.warn {
  background: rgba(255, 176, 32, 0.15);
  color: var(--status-warning);
  border-color: var(--status-warning);
}

.toast-banner {
  position: absolute;
  bottom: 74px;
  left: 14px;
  right: 14px;
  background: var(--bg-surface);
  border: 1.5px solid var(--accent-primary);
  color: var(--text-primary);
  padding: 9px 12px;
  border-radius: 12px;
  font-size: 11.5px;
  font-weight: 700;
  display: none;
  z-index: 30;
  box-shadow: var(--shadow-elev);
}