:root {
    --bg: #0B0B0B;
    --surface: #141414;
    --surface-2: #1C1C1C;
    --surface-3: #242424;
    --border: #2C2C2C;
    --accent: #FF6B35;
    --accent-dim: rgba(255,107,53,0.12);
    --accent-dim2: rgba(255,107,53,0.06);
    --text: #F0F0F0;
    --text-dim: #888;
    --text-dimmer: #4A4A4A;
    --red: #FF4545;
    --red-dim: rgba(255,69,69,0.12);
    --blue: #4FA8FF;
    --blue-dim: rgba(79,168,255,0.12);
    --green: #FF6B35;
    --radius: 8px;
    --radius-lg: 12px;
  }

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

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* ── TOP NAV (desktop) ── */
  .topnav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 56px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .logo {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 2px;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
  }

  .logo-dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; display: inline-block; animation: pulse 2s ease-in-out infinite; }

  @keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
  }

  .nav-links {
    display: flex;
    gap: 4px;
  }

  .nav-link {
    padding: 6px 14px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dim);
    border: none;
    background: none;
    transition: all 0.15s;
    font-family: 'DM Sans', sans-serif;
    letter-spacing: 0.3px;
  }

  .nav-link:hover { color: var(--text); background: var(--surface-2); }
  .nav-link.active { color: var(--accent); background: var(--accent-dim); }

  /* ── BOTTOM NAV (mobile) ── */
  .bottomnav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--surface);
    border-top: 1px solid var(--border);
    z-index: 100;
    padding: 0 8px;
    align-items: center;
    justify-content: space-around;
  }

  .bottom-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 8px 16px;
    cursor: pointer;
    color: var(--text-dim);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border: none;
    background: none;
    font-family: 'DM Sans', sans-serif;
    transition: color 0.15s;
    text-transform: uppercase;
  }

  .bottom-link svg { width: 20px; height: 20px; }
  .bottom-link.active { color: var(--accent); }

  /* ── PAGE WRAPPER ── */
  .page { display: none; padding: 24px; max-width: 1100px; margin: 0 auto; padding-bottom: 80px; }
  .page.active { display: block; }

  @media (max-width: 640px) {
    .page { padding: 16px; padding-bottom: 80px; }
    .topnav .nav-links { display: none; }
    .bottomnav { display: flex; }
    .topnav { padding: 0 16px; }
  }

  /* ── TYPOGRAPHY ── */
  .page-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 42px;
    letter-spacing: 3px;
    color: var(--text);
    line-height: 1;
    margin-bottom: 4px;
  }

  .page-sub {
    color: var(--text-dim);
    font-size: 13px;
    font-family: 'DM Mono', monospace;
    margin-bottom: 28px;
  }

  h3 {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 2px;
    color: var(--text-dim);
  }

  /* ── CARDS ── */
  .card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
  }

  .card-sm { padding: 16px; }

  /* ── STAT GRID ── */
  .stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
  }

  @media (max-width: 800px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 400px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }

  .stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    position: relative;
    overflow: hidden;
  }

  .stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.2s;
  }

  .stat-card:hover::before { opacity: 1; }

  .stat-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-dimmer);
    margin-bottom: 8px;
    font-family: 'DM Mono', monospace;
  }

  .stat-value {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 38px;
    letter-spacing: 1px;
    line-height: 1;
    color: var(--text);
  }

  .stat-value.accent { color: var(--accent); }
  .stat-unit {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 4px;
  }

  /* ── CHART GRID ── */
  .chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
  }

  @media (max-width: 700px) { .chart-grid { grid-template-columns: 1fr; } }

  .chart-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
  }

  .chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
  }

  .chart-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
    letter-spacing: 2px;
    color: var(--text-dim);
  }

  .chart-badge {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 4px;
    background: var(--accent-dim);
    color: var(--accent);
  }

  /* ── RECENT WORKOUTS TABLE ── */
  .workouts-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 20px;
  }

  .workouts-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
  }

  .workout-row {
    display: grid;
    grid-template-columns: 100px 1fr 80px 80px 80px 60px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    align-items: center;
    transition: background 0.1s;
  }

  .workout-row:last-child { border-bottom: none; }
  .workout-row:hover { background: var(--surface-2); }

  .workout-row.header-row {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-dimmer);
    font-family: 'DM Mono', monospace;
    padding-bottom: 10px;
  }

  .workout-row.header-row:hover { background: none; }

  @media (max-width: 600px) {
    .workout-row {
      grid-template-columns: 80px 1fr 70px 70px;
    }
    .workout-row > *:nth-child(5),
    .workout-row > *:nth-child(6) { display: none; }
  }

  .type-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    font-family: 'DM Mono', monospace;
  }

  .type-run { background: var(--accent-dim); color: var(--accent); }
  .type-bike { background: var(--blue-dim); color: var(--blue); }
  .type-swim { background: rgba(79,255,230,0.1); color: #4FFFE6; }
  .type-other { background: rgba(150,150,150,0.1); color: #999; }

  .data-num {
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    color: var(--text);
  }

  .data-dim {
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    color: var(--text-dim);
  }

  /* ── COUNTDOWN ── */
  .countdown-banner {
    background: linear-gradient(135deg, var(--surface) 0%, #111 100%);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
  }

  .countdown-label {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-bottom: 4px;
  }

  .countdown-num {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 52px;
    letter-spacing: 3px;
    color: var(--accent);
    line-height: 1;
  }

  .countdown-suffix {
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    color: var(--text-dim);
    margin-top: 2px;
  }

  .progress-ring-wrap { position: relative; display: flex; align-items: center; gap: 16px; }

  .progress-meta { display: flex; flex-direction: column; gap: 8px; }
  .progress-stat { font-family: 'DM Mono', monospace; font-size: 12px; color: var(--text-dim); }
  .progress-stat span { color: var(--text); }

  /* ── LOG PAGE ── */
  .form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 14px;
  }

  @media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }

  .form-group { display: flex; flex-direction: column; gap: 6px; }
  .form-group.full { grid-column: 1 / -1; }

  label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-dimmer);
    font-family: 'DM Mono', monospace;
  }

  input, select, textarea {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
    color: var(--text);
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
    width: 100%;
    -webkit-appearance: none;
  }

  input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
  }

  select option { background: var(--surface-2); }

  textarea { resize: vertical; min-height: 80px; }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    border: none;
    transition: all 0.15s;
    text-transform: uppercase;
  }

  .btn-primary {
    background: var(--accent);
    color: #0B0B0B;
    font-weight: 600;
  }

  .btn-primary:hover { background: #FF8555; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(255,107,53,0.25); }

  .btn-ghost {
    background: var(--surface-2);
    color: var(--text-dim);
    border: 1px solid var(--border);
  }

  .btn-ghost:hover { color: var(--text); background: var(--surface-3); }

  .btn-danger {
    background: var(--red-dim);
    color: var(--red);
    border: 1px solid rgba(255,69,69,0.2);
  }

  /* ── UPLOAD ZONE ── */
  .upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--surface-2);
    margin-top: 16px;
  }

  .upload-zone:hover {
    border-color: var(--accent);
    background: var(--accent-dim2);
  }

  .upload-icon { font-size: 32px; margin-bottom: 12px; }
  .upload-title { font-family: 'Bebas Neue', sans-serif; font-size: 20px; letter-spacing: 2px; color: var(--text-dim); margin-bottom: 6px; }
  .upload-sub { font-family: 'DM Mono', monospace; font-size: 11px; color: var(--text-dimmer); }

  .section-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 24px 0;
    color: var(--text-dimmer);
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
  }

  .section-divider::before, .section-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* ── PLAN PAGE ── */
  .plan-table-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 16px;
  }

  .plan-row {
    display: grid;
    grid-template-columns: 50px 80px 1fr 100px 100px 90px 120px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    align-items: center;
    gap: 8px;
    transition: background 0.1s;
  }

  @media (max-width: 700px) {
    .plan-row {
      grid-template-columns: 40px 60px 1fr 80px 80px;
    }
    .plan-row > *:nth-child(6),
    .plan-row > *:nth-child(7) { display: none; }
  }

  @media (max-width: 480px) {
    .plan-row {
      grid-template-columns: 36px 1fr 70px 70px;
    }
    .plan-row > *:nth-child(2),
    .plan-row > *:nth-child(6),
    .plan-row > *:nth-child(7) { display: none; }
  }

  .plan-row:hover { background: var(--surface-2); }
  .plan-row.header-row { background: var(--surface-2); }
  .plan-row.header-row:hover { background: var(--surface-2); }
  .plan-row.header-row > * {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-dimmer);
    font-family: 'DM Mono', monospace;
  }

  .plan-row.current-week {
    background: var(--accent-dim2);
    border-left: 2px solid var(--accent);
  }

  .week-num {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    color: var(--text-dim);
  }

  .week-num.current { color: var(--accent); }

  .status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    font-family: 'DM Mono', monospace;
    white-space: nowrap;
  }

  .status-on { background: var(--accent-dim); color: var(--accent); }
  .status-behind { background: var(--red-dim); color: var(--red); }
  .status-ahead { background: var(--blue-dim); color: var(--blue); }
  .status-pending { background: var(--surface-3); color: var(--text-dimmer); }

  .intensity-pill {
    font-size: 10px;
    padding: 2px 7px;
    border-radius: 3px;
    font-family: 'DM Mono', monospace;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  .int-easy { background: rgba(100,200,100,0.1); color: #6DC86D; }
  .int-moderate { background: rgba(255,180,50,0.1); color: #FFB432; }
  .int-hard { background: var(--red-dim); color: var(--red); }

  /* ── CLAUDE PANEL ── */
  .claude-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
  }

  .claude-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
  }

  .claude-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
    letter-spacing: 2px;
  }

  .ai-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
    animation: pulse 2s ease-in-out infinite;
  }

  .claude-body {
    padding: 20px;
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    line-height: 1.7;
    color: var(--text-dim);
    min-height: 120px;
  }

  .claude-body strong { color: var(--accent); font-weight: 500; }

  .claude-footer {
    display: flex;
    gap: 10px;
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    background: var(--surface-2);
  }

  /* ── SETTINGS PAGE ── */
  .settings-section {
    margin-bottom: 24px;
  }

  .settings-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    color: var(--text-dim);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
  }

  .key-input-wrap {
    position: relative;
  }

  .key-input-wrap input {
    padding-right: 80px;
  }

  .key-reveal {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    color: var(--text-dim);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--surface-3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }

  .prompt-hint {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--text-dimmer);
    margin-top: 6px;
    line-height: 1.6;
  }

  .garmin-card {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
  }

  .garmin-info { display: flex; flex-direction: column; gap: 4px; }
  .garmin-label { font-size: 12px; color: var(--text-dim); font-family: 'DM Mono', monospace; }
  .garmin-status { font-size: 11px; color: var(--text-dimmer); font-family: 'DM Mono', monospace; }
  .coming-soon { font-size: 10px; padding: 3px 8px; border-radius: 4px; background: var(--surface-3); color: var(--text-dimmer); font-family: 'DM Mono', monospace; letter-spacing: 1px; text-transform: uppercase; }

  /* ── MODULE CARDS ── */
  .module-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    transition: all 0.15s;
  }

  .module-card:hover { background: var(--surface-2); }

  .module-card.completed {
    border-color: var(--accent);
    background: var(--accent-dim2);
  }

  .module-icon {
    font-size: 24px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    border-radius: var(--radius);
    flex-shrink: 0;
  }

  .module-info { flex: 1; min-width: 0; }

  .module-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 16px;
    letter-spacing: 1px;
    margin-bottom: 2px;
  }

  .module-sets {
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 4px;
  }

  .module-notes {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--text-dim);
    line-height: 1.4;
  }

  .module-actions {
    display: flex;
    gap: 6px;
    align-items: center;
    flex-shrink: 0;
  }

  .check-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--border);
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dim);
    font-size: 14px;
    transition: all 0.15s;
  }

  .check-btn:hover { border-color: var(--accent); color: var(--accent); }
  .check-btn.checked { border-color: var(--accent); background: var(--accent); color: #0B0B0B; }

  /* Phase badges */
  .phase-badge {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
  }

  .phase-base { background: rgba(79,168,255,0.1); color: #4FA8FF; }
  .phase-build { background: rgba(255,107,53,0.1); color: #FF6B35; }
  .phase-peak { background: rgba(255,69,69,0.1); color: #FF4545; }
  .phase-taper { background: rgba(100,200,100,0.1); color: #6DC86D; }

  /* Category badge */
  .cat-basic { background: var(--accent-dim); color: var(--accent); }
  .cat-extra { background: rgba(150,150,150,0.1); color: #999; }

  /* Week card for plan overview */
  .week-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .week-card:hover { background: var(--surface-2); border-color: var(--accent); }
  .week-card.current { border-left: 3px solid var(--accent); background: var(--accent-dim2); }

  .week-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
  }

  .week-card-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    letter-spacing: 1px;
  }

  .week-card-body {
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    color: var(--text-dim);
    line-height: 1.5;
  }

  .completion-bar {
    height: 4px;
    background: var(--surface-3);
    border-radius: 2px;
    margin-top: 10px;
    overflow: hidden;
  }

  .completion-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s;
  }

  /* Module grid */
  .module-grid {
    display: grid;
    gap: 10px;
  }

  /* Toggle switch for extras */
  .toggle-btn {
    font-family: 'DM Mono', monospace;
    font-size: 10px;
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid var(--border);
    background: none;
    color: var(--text-dim);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.15s;
  }

  .toggle-btn:hover { border-color: var(--accent); color: var(--accent); }
  .toggle-btn.active { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

  /* ── MISC ── */
  .row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
  .spacer { flex: 1; }
  .mt-16 { margin-top: 16px; }
  .mt-20 { margin-top: 20px; }
  .mb-16 { margin-bottom: 16px; }

  /* Scrollbar */
  ::-webkit-scrollbar { width: 6px; height: 6px; }
  ::-webkit-scrollbar-track { background: var(--bg); }
  ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
  ::-webkit-scrollbar-thumb:hover { background: #444; }