/* ============================================
   RunReps Run Share — Mobile-First Styles
   ============================================ */

/* ── Reset ──────────────────────────────── */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  padding-bottom: 72px; /* space for bottom bar */
}

img, canvas { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input[type="color"] { border: none; padding: 0; cursor: pointer; }
input[type="text"] { font-family: inherit; }

/* ── Design Tokens ──────────────────────── */

:root {
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F8F6;
  --color-accent: #FF5621;
  --color-accent-hover: #E84400;
  --color-text: #0A0A0A;
  --color-text-secondary: #6B6B6B;
  --color-border: #E5E5E3;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);

  --transition: 200ms cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* ── Header ─────────────────────────────── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: 640px;
  margin: 0 auto;
  padding: 12px var(--space-sm);
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.logo-text {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo-byline {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-secondary);
  text-decoration: none;
}
.logo-byline:hover { color: var(--color-text); }

/* ── Wizard Step Nav ────────────────────── */

.wizard-nav {
  position: sticky;
  top: 49px; /* below header */
  z-index: 99;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 12px var(--space-sm);
}

.wizard-nav[hidden] { display: none; }

.wizard-nav-inner {
  max-width: 320px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 0;
}

.wizard-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  border: 2px solid var(--color-border);
  transition: all var(--transition);
  flex-shrink: 0;
}

.wizard-dot.active {
  background: var(--color-accent);
  color: #FFF;
  border-color: var(--color-accent);
}

.wizard-dot.completed {
  background: var(--color-text);
  color: #FFF;
  border-color: var(--color-text);
}

.wizard-dot-line {
  flex: 1;
  height: 2px;
  background: var(--color-border);
  min-width: 12px;
}

/* ── Wizard Steps ───────────────────────── */

.wizard-step {
  padding: var(--space-md) var(--space-sm) var(--space-xl);
  touch-action: pan-y;
}

.wizard-step[hidden] { display: none; }

.step-inner {
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
}

.step-title {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

/* ── Upload Step ────────────────────────── */

#step-upload .step-inner {
  text-align: center;
  padding-top: var(--space-lg);
}

.hero-title {
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-xs);
}

.hero-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-md);
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  background: var(--color-bg-alt);
  outline: none;
}

.upload-zone:hover, .upload-zone:focus-visible {
  border-color: var(--color-accent);
  background: #FFF8F5;
}

.upload-zone.drag-over {
  border-color: var(--color-accent);
  background: #FFF0EB;
}

.upload-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  pointer-events: none;
}

.upload-icon { color: var(--color-text-secondary); margin-bottom: var(--space-xs); }
.drag-over .upload-icon { color: var(--color-accent); }
.upload-text { font-size: 16px; font-weight: 500; }
.upload-text-secondary { font-size: 14px; color: var(--color-text-secondary); }
.upload-formats { font-size: 12px; color: var(--color-text-secondary); margin-top: var(--space-xs); }

.upload-status { margin-top: var(--space-md); }
.upload-status-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}
.upload-status-text::before {
  content: '';
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.error-display {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: #FFF5F5;
  border: 1px solid #FFD4D4;
  border-radius: var(--radius-sm);
  text-align: center;
}
.error-text { font-size: 14px; color: #CC3333; margin-bottom: var(--space-sm); }

/* ── Mini Preview Canvas ────────────────── */

.mini-preview-wrap {
  margin-bottom: var(--space-md);
  display: flex;
  justify-content: center;
}

.mini-preview {
  width: 100%;
  max-width: 300px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  aspect-ratio: 1;
  touch-action: pan-y;
}

/* ── Background Step ────────────────────── */

.tab-group {
  display: flex;
  gap: 4px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: var(--space-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  flex: 1;
  padding: 8px 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
  white-space: nowrap;
  min-width: 0;
}

.tab-btn:hover { color: var(--color-text); }
.tab-btn.active { background: var(--color-bg); color: var(--color-text); box-shadow: var(--shadow-sm); }

.bg-panel { margin-bottom: var(--space-md); }
.bg-panel[hidden] { display: none; }

/* Colour swatches */
.swatch-row {
  display: flex;
  gap: 8px;
  margin-bottom: var(--space-sm);
  flex-wrap: wrap;
}

.swatch {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
  flex-shrink: 0;
}
.swatch:hover, .swatch.active { border-color: var(--color-accent); transform: scale(1.1); }
.swatch-light { border-color: var(--color-border); }
.swatch-light:hover, .swatch-light.active { border-color: var(--color-accent); }

/* Gradient swatches */
.gradient-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

.gradient-swatch {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition), transform var(--transition);
}
.gradient-swatch:hover, .gradient-swatch.active { border-color: var(--color-accent); transform: scale(1.05); }

/* Photo/video library */
.bg-upload-zone {
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 14px;
  text-align: center;
  cursor: pointer;
  transition: border-color 150ms;
}
.bg-upload-zone:hover { border-color: var(--color-accent); }
.bg-upload-label { font-size: 13px; color: var(--color-text-secondary); }
.bg-or { font-size: 12px; color: var(--color-text-secondary); text-align: center; margin: 8px 0; }
.bg-note { font-size: 12px; color: var(--color-text-secondary); margin: 8px 0; }

.bg-library {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.bg-library-item {
  aspect-ratio: 1;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 150ms;
}
.bg-library-item:hover, .bg-library-item.is-selected { border-color: var(--color-accent); }
.bg-library-item img, .bg-library-item video { width: 100%; height: 100%; object-fit: cover; }

/* Carousel */
.carousel-thumbs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 8px 0;
  -webkit-overflow-scrolling: touch;
}
.carousel-thumb {
  width: 64px;
  height: 64px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--color-border);
}
.carousel-thumb img { width: 100%; height: 100%; object-fit: cover; }

/* ── Route Step ─────────────────────────── */

.panel-group { margin-bottom: var(--space-md); }

.panel-label {
  display: block;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.colour-input-wrap { display: flex; align-items: center; gap: var(--space-xs); }

.colour-input {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: none;
  -webkit-appearance: none;
}
.colour-input::-webkit-color-swatch-wrapper { padding: 0; }
.colour-input::-webkit-color-swatch { border: 1px solid var(--color-border); border-radius: 6px; }

.colour-hex {
  font-size: 13px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  color: var(--color-text-secondary);
}

/* Range slider */
.slider-wrap { display: flex; flex-direction: column; gap: var(--space-xs); }

.range-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  outline: none;
}

.range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: 2px solid #FFF;
  box-shadow: var(--shadow-sm);
}

.range-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-accent);
  cursor: pointer;
  border: 2px solid #FFF;
  box-shadow: var(--shadow-sm);
}

.slider-preview {
  height: 20px;
  display: flex;
  align-items: center;
}

.slider-preview-line {
  width: 80px;
  height: 5px;
  background: var(--color-text);
  border-radius: 4px;
  transition: height var(--transition);
}

/* Checkbox */
.checkbox-group { display: flex; flex-direction: column; gap: 6px; }
.checkbox-group-row { flex-direction: row; flex-wrap: wrap; gap: 12px; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 14px;
  color: var(--color-text);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  cursor: pointer;
}

/* ── Text Step ──────────────────────────── */

.text-input {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
}
.text-input:focus { border-color: var(--color-accent); }
.text-input::placeholder { color: var(--color-text-secondary); }

/* Font picker */
.font-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.font-card {
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  position: relative;
}
.font-card:hover { border-color: var(--color-text-secondary); }
.font-card.active { border-color: var(--color-accent); background: #FFF8F5; }
.font-card-name { font-size: 18px; line-height: 1.2; }
.font-card-label { font-size: 10px; color: var(--color-text-secondary); margin-top: 4px; }

/* Position grid (3x3) */
.position-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  max-width: 180px;
}

.position-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  border: 2px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.position-cell:hover { border-color: var(--color-text-secondary); }
.position-cell.active { border-color: var(--color-accent); background: var(--color-accent); }

.position-cell-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-secondary);
}
.position-cell.active .position-cell-dot { background: #FFF; }

/* ── Download Step ──────────────────────── */

.canvas-preview-wrap {
  margin-bottom: var(--space-md);
  display: flex;
  justify-content: center;
}

.route-canvas {
  width: 100%;
  max-width: 480px;
  max-height: 70vh;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  object-fit: contain;
  touch-action: pan-y;
}

.stats-bar {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  margin-bottom: var(--space-md);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stat-item { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.stat-value { font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }
.stat-label { font-size: 10px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-secondary); }

.branding-toggle-wrap {
  margin-bottom: var(--space-md);
  display: flex;
  justify-content: center;
}

/* ── Buttons ────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 14px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-align: center;
  line-height: 1;
}

.btn-primary { background: var(--color-accent); color: #FFF; }
.btn-primary:hover { background: var(--color-accent-hover); }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover { border-color: var(--color-text-secondary); }

.btn-ghost { color: var(--color-text-secondary); font-weight: 500; padding: 8px 0; }
.btn-ghost:hover { color: var(--color-text); }

.btn-download, .btn-share {
  width: 100%;
  margin-bottom: var(--space-xs);
}

.link-btn {
  font-size: inherit;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.link-btn:hover { color: var(--color-accent-hover); }

/* Toggle group */
.toggle-group {
  display: flex;
  gap: 4px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-bottom: var(--space-sm);
}

.toggle-btn {
  flex: 1;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
}
.toggle-btn:hover { color: var(--color-text); }
.toggle-btn.active { background: var(--color-bg); color: var(--color-text); box-shadow: var(--shadow-sm); }

/* ── Bottom Bar ─────────────────────────── */

.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  padding: 12px var(--space-sm);
  display: flex;
  gap: var(--space-xs);
  justify-content: space-between;
  padding-bottom: max(12px, env(safe-area-inset-bottom));
}

.bottom-bar[hidden] { display: none; }

.bottom-btn { flex: 1; }

/* ── Video Progress ─────────────────────── */

.video-progress {
  margin: 12px 0 16px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-bg-alt);
  position: relative;
  height: 32px;
}
.video-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--color-accent);
  transition: width 200ms linear;
  border-radius: 6px;
}
.video-progress-text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 500;
}
.video-progress[hidden] { display: none; }
#video-export-group[hidden] { display: none; }

/* ── Footer ─────────────────────────────── */

.site-footer {
  padding: var(--space-lg) var(--space-sm);
  text-align: center;
  border-top: 1px solid var(--color-border);
}
.footer-copy { font-size: 13px; color: var(--color-text-secondary); }
.footer-link { color: var(--color-text-secondary); text-decoration: underline; }
.footer-link:hover { color: var(--color-text); }

/* Cross-promo */
.cross-promo {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.cross-promo p {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 4px;
}
.cross-promo a {
  color: var(--color-text-secondary);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.cross-promo a:hover { color: var(--color-text); }

/* ── Desktop (min 768px) ────────────────── */

@media (min-width: 768px) {
  body { padding-bottom: 0; }

  .wizard-nav { top: 53px; }

  .wizard-step {
    padding: var(--space-xl) var(--space-md);
    min-height: auto;
  }

  .step-inner { max-width: 560px; }

  .hero-title { font-size: 48px; }
  .hero-subtitle { font-size: 18px; }

  .mini-preview { max-width: 400px; }

  .route-canvas { max-width: 560px; }

  .gradient-grid { grid-template-columns: repeat(5, 1fr); }

  .font-grid { grid-template-columns: repeat(3, 1fr); }

  .bottom-bar {
    position: sticky;
    max-width: 560px;
    margin: 0 auto;
    border-top: none;
    background: transparent;
    backdrop-filter: none;
    padding: var(--space-sm) 0;
  }

  .stats-bar { gap: var(--space-xl); }
  .stat-value { font-size: 24px; }
}