/* ============================================================
   TRAINING TRACKER — Dark minimal style
   ============================================================ */

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

:root {
  --bg: #0f0f0f;
  --card: #1a1a1a;
  --border: #2a2a2a;
  --accent: #e8c547;
  --text: #f0f0f0;
  --text-muted: #888;
  --green: #4caf50;
  --red: #e05252;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.18s ease;
}

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

a {
  color: var(--accent);
  text-decoration: none;
}

/* ── HEADER ── */
.app-header {
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
}

.week-selector-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.week-selector-wrap select {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 0.9rem;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
}

.week-selector-wrap select:focus {
  border-color: var(--accent);
}

/* ── MAIN ── */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  margin-top: 80px;
  font-size: 1rem;
}

/* ── SESSION GRID ── */
.week-title {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.sessions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

@media (max-width: 600px) {
  .sessions-grid {
    grid-template-columns: 1fr;
  }
  main {
    padding: 20px 16px 48px;
  }
  .header-inner {
    height: 52px;
  }
}

/* ── SESSION CARD ── */
.session-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color var(--transition), transform var(--transition);
  cursor: pointer;
}

.session-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.session-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.session-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 20px;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge-pending {
  background: rgba(255,255,255,0.07);
  color: var(--text-muted);
}

.badge-completed {
  background: rgba(76, 175, 80, 0.18);
  color: var(--green);
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.session-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.session-card-btn {
  align-self: flex-start;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius-sm);
  padding: 7px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  cursor: pointer;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
}

.session-card-btn:hover {
  background: var(--accent);
  color: #000;
}

/* ── SESSION DETAIL ── */
.session-detail {}

.detail-nav {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.back-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 7px 14px;
  font-size: 0.82rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: border-color var(--transition), color var(--transition);
}

.back-btn:hover {
  border-color: var(--text);
  color: var(--text);
}

.detail-week-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

/* ── BLOCK ── */
.block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}

.block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
  gap: 12px;
}

.block-header:hover {
  background: rgba(255,255,255,0.03);
}

.block-header-left {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 1;
  min-width: 0;
}

.block-letter {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.08em;
  min-width: 22px;
}

.block-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.block-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.block-notes-inline {
  font-size: 0.75rem;
  color: #aaa;
  font-style: italic;
}

.chevron {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: transform var(--transition);
  flex-shrink: 0;
}

.block.collapsed .chevron {
  transform: rotate(-90deg);
}

.block-body {
  padding: 0 0 8px;
  border-top: 1px solid var(--border);
}

.block.collapsed .block-body {
  display: none;
}

/* ── EXERCISE ROW ── */
.exercise-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background var(--transition);
  cursor: default;
}

.exercise-row:last-child {
  border-bottom: none;
}

.exercise-row:hover {
  background: rgba(255,255,255,0.03);
}

.exercise-index {
  font-size: 0.7rem;
  color: var(--text-muted);
  min-width: 18px;
  padding-top: 2px;
  flex-shrink: 0;
}

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

.exercise-name {
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.exercise-name:hover {
  color: var(--accent);
}

.yt-icon {
  font-size: 0.8rem;
  opacity: 0.6;
}

.record-flag {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-left: 4px;
  flex-shrink: 0;
  vertical-align: middle;
}

.exercise-details {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-top: 4px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.exercise-details .reps {
  color: #ccc;
}

.exercise-details .rir {
  color: var(--accent);
  opacity: 0.8;
}

.exercise-details .ex-notes {
  color: #888;
  font-style: italic;
  width: 100%;
}

/* ── SESSION FOOTER ── */
.session-footer {
  margin-top: 32px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
}

.footer-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.complete-btn {
  width: 100%;
  padding: 16px;
  border: none;
  border-radius: var(--radius);
  background: var(--green);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  text-transform: uppercase;
  transition: background var(--transition), opacity var(--transition);
  margin-bottom: 20px;
}

.complete-btn:hover:not(:disabled) {
  background: #43a047;
}

.complete-btn:disabled {
  background: rgba(76, 175, 80, 0.3);
  color: var(--green);
  cursor: default;
  opacity: 0.8;
}

/* ── VOICE NOTE ── */
.audio-section {
  margin-top: 20px;
}

.audio-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.record-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

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

.record-btn.recording {
  border-color: var(--red);
  color: var(--red);
  animation: pulse-border 1.2s ease-in-out infinite;
}

.record-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 rgba(224, 82, 82, 0.4); }
  50%       { box-shadow: 0 0 0 5px rgba(224, 82, 82, 0); }
}

.upload-label {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}

.upload-label:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.upload-label input[type="file"] {
  display: none;
}

.audio-status {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-height: 20px;
}

.audio-status.success {
  color: var(--green);
}

.audio-status.error {
  color: var(--red);
}

.timer {
  font-variant-numeric: tabular-nums;
  font-family: monospace;
  font-size: 0.85rem;
}

/* ── YOUTUBE MODAL ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
  padding: 16px;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  position: relative;
  background: #111;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 620px;
  width: 100%;
  padding: 12px;
}

.modal-close {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: background var(--transition);
  z-index: 2;
}

.modal-close:hover {
  background: var(--border);
}

.yt-embed-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: calc(var(--radius) - 4px);
}

.yt-embed-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: calc(var(--radius) - 4px);
}

/* ── Exercise video upload ─────────────────────────────── */
.exercise-video-section {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.video-upload-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #2a2a2a;
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 0.78rem;
  color: #aaa;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.video-upload-label:hover {
  background: #333;
  border-color: var(--accent);
  color: var(--accent);
}

.video-uploaded {
  font-size: 0.78rem;
  color: #4caf50;
}

.video-upload-status {
  font-size: 0.75rem;
  color: #888;
}

.video-upload-status.success {
  color: #4caf50;
}

.video-upload-status.error {
  color: #e55;
}

.video-view-btn {
  background: #1a1a1a;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 0.78rem;
  color: var(--accent);
  cursor: pointer;
  transition: background 0.15s;
}

.video-view-btn:hover {
  background: rgba(232,197,71,0.1);
}

/* ── Exercise feedback ─────────────────────────────────── */
.feedback-wrap {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 8px;
}

.feedback-input {
  flex: 1;
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 8px;
  color: var(--text);
  font-size: 0.78rem;
  padding: 7px 10px;
  resize: none;
  font-family: inherit;
  transition: border-color 0.15s;
}

.feedback-input:focus {
  outline: none;
  border-color: var(--accent);
}

.feedback-input::placeholder {
  color: #555;
}

.feedback-save-btn {
  background: #2a2a2a;
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  color: #aaa;
  font-size: 0.75rem;
  padding: 5px 12px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  align-self: flex-start;
  margin-top: 2px;
}

.feedback-save-btn:hover {
  background: #333;
  border-color: var(--accent);
  color: var(--accent);
}

.feedback-saved {
  font-size: 0.8rem;
  color: #4caf50;
  align-self: flex-start;
  margin-top: 6px;
}

.feedback-input.feedback-readonly {
  border-color: #2a2a2a;
  color: #888;
  cursor: default;
  background: #141414;
}