/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-dark: #2E7D32;
  --green-mid: #43A047;
  --green-light: #A5D6A7;
  --green-pale: #E8F5E9;
  --white: #FFFFFF;
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #EEEEEE;
  --gray-400: #BDBDBD;
  --gray-500: #9E9E9E;
  --gray-600: #757575;
  --gray-800: #424242;
  --gray-900: #212121;
  --red: #E53935;
  --red-dark: #B71C1C;
  --orange: #FB8C00;
  --blue: #1E88E5;
  --radius: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
}

html { font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overscroll-behavior: none;
  min-height: 100dvh;
}

/* ===== SCREENS / LAYOUT ===== */
.screen { min-height: 100dvh; display: flex; align-items: flex-start; justify-content: center; }
.screen[hidden] { display: none !important; }

.container {
  width: 100%;
  max-width: 480px;
  padding: 1.25rem 1rem 2rem;
}

h1 { font-size: 1.5rem; font-weight: 700; }
h2 { font-size: 1.25rem; font-weight: 600; }
.subtitle { color: var(--gray-600); margin: 0.5rem 0 1.5rem; }
.hint { color: var(--gray-600); font-size: 0.875rem; margin-top: 0.25rem; }

.race-date-field {
  margin: 1rem 0;
}
.race-date-field label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--gray-600); margin-bottom: 0.25rem;
}
.race-date-field input {
  width: 100%; padding: 0.5rem 0.75rem;
  border: 2px solid var(--gray-400); border-radius: var(--radius);
  font-size: 0.9rem; color: var(--gray-800);
  background: var(--white);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: none; border-radius: var(--radius);
  font-size: 1rem; font-weight: 600;
  cursor: pointer; padding: 0.75rem 1.5rem;
  transition: background 0.15s, opacity 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  width: 100%;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; pointer-events: none; }
.btn[hidden] { display: none; }

.btn-primary { background: var(--green-dark); color: var(--white); }
.btn-primary:hover { background: var(--green-mid); }
.btn-primary.btn-pause { background: var(--red-dark); }
.btn-primary.btn-pause:hover { background: var(--red); }

.btn-secondary { background: var(--gray-200); color: var(--gray-800); }
.btn-secondary:hover { background: var(--gray-400); }

.btn-large { font-size: 1.125rem; padding: 1rem 2rem; }

.btn-link {
  background: none; color: var(--gray-600); font-weight: 500;
  font-size: 0.875rem; padding: 0.5rem; text-decoration: underline;
}

.btn-icon {
  background: none; color: var(--gray-800); font-size: 1.25rem;
  width: auto; padding: 0.5rem 0.75rem;
}

/* ===== SETUP: DAY PICKER ===== */
.day-picker {
  display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.35rem;
  justify-items: center; margin-bottom: 1rem;
}
.day-btn {
  width: 2.75rem; height: 2.75rem; border-radius: 50%;
  border: 2px solid var(--gray-400); background: var(--white);
  font-size: 0.8rem; font-weight: 600; color: var(--gray-800);
  cursor: pointer; transition: all 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.day-btn.selected {
  border-color: var(--green-dark); background: var(--green-dark);
  color: var(--white);
}

/* ===== HOME: HEADER ===== */
.home-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.race-countdown {
  font-size: 0.8rem; font-weight: 600;
  background: var(--green-pale); color: var(--green-dark);
  padding: 0.25rem 0.75rem; border-radius: 999px;
}

.next-workout-info {
  font-size: 0.9rem; color: var(--green-dark); font-weight: 600;
  margin-bottom: 1rem; text-align: center;
}

/* ===== CARD ===== */
.card {
  background: var(--white); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1.25rem;
  margin-bottom: 1rem;
}
.card-label {
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  color: var(--green-dark); letter-spacing: 0.05em; margin-bottom: 0.25rem;
}
.workout-desc { color: var(--gray-600); font-size: 0.875rem; margin: 0.5rem 0 1rem; }

/* Timeline legend */
.timeline-legend {
  display: flex; gap: 1rem; margin: 0.5rem 0 0.5rem;
  font-size: 0.75rem; color: var(--gray-600);
}
.legend-item { display: flex; align-items: center; gap: 0.25rem; }
.legend-swatch {
  display: inline-block; width: 12px; height: 12px;
  border-radius: 3px;
}

/* ===== TIMELINE PREVIEW (HOME) ===== */
.timeline-preview { display: flex; gap: 2px; border-radius: 6px; overflow: hidden; height: 24px; margin-bottom: 0.75rem; }
.timeline-preview .seg {
  display: flex; align-items: center; justify-content: center;
  font-size: 0.6rem; font-weight: 600; color: var(--white);
  white-space: nowrap; overflow: hidden;
  min-width: 8px;
}
.seg-warmup { background: var(--orange); }
.seg-jog { background: var(--green-dark); }
.seg-walk { background: var(--blue); }

.workout-total-time {
  font-size: 0.8rem; color: var(--gray-600); text-align: right;
  margin-bottom: 0.75rem;
}

/* ===== WORKOUT ACTIVE SCREEN ===== */
.workout-container { padding-top: 0.75rem; }
.workout-header { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; }

.segment-display {
  text-align: center; padding: 1.5rem 0 1rem;
}
.segment-type {
  font-size: 1.5rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.segment-type.type-warmup { color: var(--orange); }
.segment-type.type-jog { color: var(--green-dark); }
.segment-type.type-walk { color: var(--blue); }
.segment-type.type-transition { color: var(--gray-600); }

.segment-timer {
  font-size: 4rem; font-weight: 700; font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em; line-height: 1.1;
}
.segment-remaining {
  font-size: 0.85rem; color: var(--gray-600); margin-top: 0.25rem;
}

/* Progress bar */
.total-progress {
  height: 8px; border-radius: 4px; background: var(--gray-200);
  margin: 0.75rem 0 0.25rem; overflow: hidden;
}
.progress-bar {
  height: 100%; border-radius: 4px; background: var(--green-dark);
  width: 0%; transition: width 0.3s linear;
}
.total-time-display {
  font-size: 0.8rem; color: var(--gray-600); text-align: right;
  margin-bottom: 1rem;
}

/* Active timeline */
.active-timeline {
  display: flex; flex-direction: column; gap: 0.25rem;
  margin-bottom: 1.25rem;
}
.tl-item {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.5rem; border-radius: 8px;
  font-size: 0.85rem; color: var(--gray-900);
  transition: background 0.2s;
}
.tl-item.active {
  background: var(--green-pale); color: var(--green-dark); font-weight: 600;
}
.tl-item.done {
  color: var(--gray-500); background: var(--gray-100);
  font-style: italic;
}
.tl-item.remaining {
  color: var(--gray-500); background: var(--gray-100);
  font-style: italic;
}
.tl-dot {
  width: 10px; height: 10px; border-radius: 50%;
  border: 2px solid var(--gray-400); flex-shrink: 0;
}
.tl-item.active .tl-dot { background: var(--green-dark); border-color: var(--green-dark); }
.tl-item.done .tl-dot { background: var(--gray-400); border-color: var(--gray-400); }
.tl-item.remaining .tl-dot { background: none; border-color: var(--gray-400); border-style: dashed; }
.tl-dur { margin-left: auto; font-size: 0.75rem; font-variant-numeric: tabular-nums; }

/* Workout controls */
.workout-controls { display: flex; gap: 0.75rem; }
.workout-controls .btn-secondary { flex: 0 0 auto; width: auto; }
.workout-controls .btn-primary { flex: 1; }

/* ===== COMPLETE SCREEN ===== */
.complete-celebration { font-size: 3rem; text-align: center; margin-bottom: 0.5rem; padding-top: 2rem; }
#complete-screen h1 { text-align: center; margin-bottom: 0.25rem; }
#complete-screen p { text-align: center; color: var(--gray-600); }
#complete-duration { margin-bottom: 1.5rem; }

.rating-section { margin-bottom: 1.5rem; }
.rating-label { font-weight: 600; text-align: center; margin-bottom: 0.5rem; color: var(--gray-800); }
.rating-buttons { display: flex; justify-content: center; gap: 0.5rem; }
.rating-btn {
  width: 3.25rem; height: 3.25rem; border-radius: 50%;
  border: 2px solid var(--gray-400); background: var(--white);
  font-size: 1rem; font-weight: 700; color: var(--gray-800);
  cursor: pointer; transition: all 0.15s; display: flex;
  flex-direction: column; align-items: center; justify-content: center;
  line-height: 1;
  -webkit-tap-highlight-color: transparent;
}
.rating-btn span { font-size: 0.85rem; }
.rating-btn.selected {
  border-color: var(--green-dark); background: var(--green-dark); color: var(--white);
}

/* ===== HISTORY ===== */
.history-list { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 1rem; }
.history-entry {
  background: var(--white); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}
.history-item-header {
  display: flex; align-items: center; justify-content: space-between;
}
.history-item .hi-left { flex: 1; }
.hi-name { font-weight: 600; font-size: 0.9rem; }
.hi-date { font-size: 0.75rem; color: var(--gray-600); }
.hi-duration { font-size: 0.75rem; color: var(--gray-600); }
.hi-distance { font-size: 0.75rem; color: var(--gray-600); }
.hi-rating { font-size: 1.5rem; margin-left: 0.75rem; }
.hi-delete {
  background: none; border: none; cursor: pointer;
  font-size: 1.1rem; color: var(--gray-400); padding: 0.25rem;
  margin-left: 0.5rem; line-height: 1;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.15s;
}
.hi-delete:hover { color: var(--red); }
.btn-danger { color: var(--red); }
.btn-muted { color: var(--gray-500); }

/* ===== HISTORY MAP (INLINE) ===== */
.history-entry { margin-bottom: 0.75rem; }
.history-map-inline {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.75rem;
  margin-top: 0.5rem;
}
.history-map-canvas {
  height: 240px;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}
.history-map-stats {
  display: grid; gap: 0.35rem;
  font-size: 0.85rem; color: var(--gray-700);
}
.history-map-stats .stat-row {
  display: flex; justify-content: space-between; align-items: center;
}
.history-map-stats .stat-label { font-weight: 600; }
.segment-label {
  background: rgba(255,255,255,0.9);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  padding: 0.2rem 0.5rem;
  min-width: 70px;
  text-align: center;
  font-size: 0.7rem; font-weight: 600;
  color: var(--gray-800);
  box-shadow: var(--shadow);
  line-height: 1.1;
}
.segment-label-line { display: block; text-align: center; }

/* ===== PROGRAM OVERVIEW ===== */
.program-overview {
  margin-bottom: 1rem;
}
.program-overview-toggle {
  font-size: 0.9rem; font-weight: 600; color: var(--green-dark);
  cursor: pointer; padding: 0.75rem 0;
  list-style: none; text-align: center;
  -webkit-tap-highlight-color: transparent;
}
.program-overview-toggle::-webkit-details-marker { display: none; }
.program-overview-toggle::before {
  content: '\25B6 '; font-size: 0.7rem; margin-right: 0.25rem;
}
.program-overview[open] > .program-overview-toggle::before {
  content: '\25BC ';
}
.program-weeks { padding-top: 0.25rem; }

.week-group { margin-bottom: 0.5rem; }
.week-group summary {
  font-size: 0.85rem; font-weight: 600; color: var(--gray-800);
  cursor: pointer; padding: 0.5rem 0.5rem;
  background: var(--gray-100); border-radius: 8px;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}
.week-group summary::-webkit-details-marker { display: none; }
.week-group summary::before {
  content: '\25B6 '; font-size: 0.6rem; margin-right: 0.25rem;
}
.week-group[open] > summary::before {
  content: '\25BC ';
}
.week-group summary .week-badge {
  font-size: 0.7rem; font-weight: 600; padding: 0.1rem 0.4rem;
  border-radius: 999px; margin-left: 0.5rem; vertical-align: middle;
}
.week-badge.badge-done { background: var(--green-pale); color: var(--green-dark); }
.week-badge.badge-current { background: #FFF3E0; color: var(--orange); }

.wo-list { padding: 0.25rem 0 0.25rem 0.5rem; }
.wo-list-item {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.5rem; border-radius: 8px;
  font-size: 0.8rem; color: var(--gray-800);
}
.wo-list-item.wo-done { color: var(--gray-500); }
.wo-list-item.wo-current { font-weight: 600; color: var(--green-dark); background: var(--green-pale); }
.wo-list-item.wo-selected {
  border: 2px solid var(--blue); background: #E3F2FD;
  color: var(--gray-900);
}
.wo-list-item.wo-selected {
  border: 2px solid var(--blue); background: #E3F2FD;
  color: var(--gray-900);
}
.wo-check {
  width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0;
  border: 2px solid var(--gray-400); display: flex; align-items: center; justify-content: center;
  font-size: 0.6rem;
}
.wo-done .wo-check { background: var(--green-dark); border-color: var(--green-dark); color: var(--white); }
.wo-current .wo-check { border-color: var(--green-dark); }
.wo-actions {
  margin-left: auto; display: inline-flex; align-items: center; gap: 0.35rem;
  white-space: nowrap;
}
.wo-list-item .wo-dur {
  font-size: 0.7rem; color: var(--gray-500); font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.wo-set-next-inline {
  font-size: 0.7rem; padding: 0.2rem 0.35rem;
  white-space: nowrap; margin-left: 0.35rem;
}
.wo-list-item.wo-expanded { background: var(--gray-100); border-radius: 8px 8px 0 0; }

.wo-preview {
  padding: 0.25rem 0.5rem 0.5rem 2rem;
  background: var(--gray-100); border-radius: 0 0 8px 8px;
  margin-bottom: 0.25rem;
}
.wo-legend { margin-bottom: 0.25rem; }
.wo-preview .timeline-preview { height: 18px; margin-bottom: 0.25rem; }
.wo-preview .workout-total-time { font-size: 0.7rem; margin-bottom: 0; }
.wo-set-next { margin-top: 0.35rem; }

/* ===== UTIL ===== */
@media (min-width: 500px) {
  .container { padding: 2rem 1.5rem; }
}