:root {
  --bg: #0f1115;
  --bg-soft: #171a21;
  --card: #1c1f28;
  --card-border: #2a2e3a;
  --text: #eef0f4;
  --text-dim: #9aa0ae;
  --accent: #6ee7b7;
  --accent-2: #60a5fa;
  --treadmill: #60a5fa;
  --kettlebell: #f97362;
  --rest: #a78bfa;
  --success: #34d399;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(0,0,0,0.35);
  font-size: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at top, #1a1e28 0%, #0f1115 55%);
  color: var(--text);
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 18px 80px;
}

/* ---------------- HERO ---------------- */
.hero {
  background: linear-gradient(135deg, #1b2130 0%, #14171f 100%);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.hero-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 12px;
}
.hero-title h1 {
  margin: 0;
  font-size: 1.8rem;
  letter-spacing: -0.02em;
}
.subtitle {
  margin: 4px 0 0;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.goal-pill {
  display: flex;
  align-items: baseline;
  gap: 6px;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  padding: 10px 18px;
}
.goal-num { font-size: 1.5rem; font-weight: 700; }
.goal-target { color: var(--accent); }
.goal-arrow { color: var(--text-dim); }
.goal-unit { color: var(--text-dim); font-size: 0.85rem; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  margin-top: 20px;
}
.stat-box {
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}
.stat-box .stat-value { font-size: 1.3rem; font-weight: 700; }
.stat-box .stat-label { font-size: 0.78rem; color: var(--text-dim); margin-top: 2px; }

.progress-track {
  margin-top: 18px;
  height: 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  overflow: hidden;
  border: 1px solid var(--card-border);
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  width: 0%;
  transition: width 0.6s ease;
}
.progress-caption {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ---------------- TABS ---------------- */
.tabs {
  display: flex;
  gap: 8px;
  margin: 22px 0 18px;
  overflow-x: auto;
}
.tab-btn {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  background: var(--accent);
  color: #0f1115;
  border-color: var(--accent);
  font-weight: 600;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---------------- CARDS ---------------- */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; }
.card-sub { color: var(--text-dim); font-size: 0.85rem; margin-top: -6px; }

/* ---------------- TODAY CARD ---------------- */
.today-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.today-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 6px;
}
.today-card.type-treadmill::before { background: var(--treadmill); }
.today-card.type-kettlebell::before { background: var(--kettlebell); }
.today-card.type-rest::before { background: var(--rest); }

.today-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.today-date { color: var(--text-dim); font-size: 0.85rem; }
.today-title { font-size: 1.5rem; margin: 4px 0 0; }
.phase-badge {
  font-size: 0.72rem;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.final-day-banner {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: linear-gradient(90deg, rgba(110,231,183,0.15), rgba(96,165,250,0.1));
  border: 1px solid rgba(110,231,183,0.4);
  font-size: 0.88rem;
}

.section-block {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--card-border);
}
.section-block h4 {
  margin: 0 0 10px;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.exercise-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.exercise-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.9rem;
}
.exercise-list li input[type=checkbox] {
  margin-top: 2px;
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}
.exercise-list .ex-body { flex: 1; }
.exercise-list .ex-name { font-weight: 600; }
.exercise-list .ex-detail { color: var(--text-dim); display: block; font-size: 0.82rem; }
.exercise-list li.checked { opacity: 0.55; text-decoration: line-through; }
.watch-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #ff6b6b;
  text-decoration: none;
  border: 1px solid rgba(255,107,107,0.4);
  background: rgba(255,107,107,0.08);
  border-radius: 999px;
  padding: 3px 10px;
  text-decoration-line: none;
}
.watch-link:hover { background: rgba(255,107,107,0.18); }
li.checked .watch-link { opacity: 0.6; }

.note-note {
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.today-footer {
  margin-top: 22px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.field-group { display: flex; flex-direction: column; gap: 4px; }
.field-group label { font-size: 0.75rem; color: var(--text-dim); }
.field-group input, .field-group textarea {
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 9px 11px;
  font-size: 0.9rem;
  font-family: inherit;
}
.field-group textarea { min-width: 220px; resize: vertical; min-height: 42px; }

.btn {
  border: none;
  border-radius: 999px;
  padding: 11px 22px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s ease, opacity 0.15s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--accent); color: #0f1115; }
.btn-secondary { background: var(--bg-soft); color: var(--text); border: 1px solid var(--card-border); }
.btn-complete { background: var(--success); color: #06251b; }
.btn-complete.is-done { background: var(--bg-soft); color: var(--text-dim); border: 1px solid var(--card-border); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.nav-arrows { display: flex; gap: 10px; margin-top: 18px; }

/* ---------------- CALENDAR ---------------- */
.filter-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
#jump-date {
  background: var(--card);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 9px 12px;
  border-radius: var(--radius-sm);
}
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.78rem; color: var(--text-dim); }
.legend-item { display: flex; align-items: center; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot-treadmill { background: var(--treadmill); }
.dot-kettlebell { background: var(--kettlebell); }
.dot-rest { background: var(--rest); }

.week-group {
  margin-bottom: 18px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}
.week-header {
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: var(--bg-soft);
}
.week-header .week-title { font-weight: 700; }
.week-header .week-phase { font-size: 0.75rem; color: var(--text-dim); }
.week-header .chevron { transition: transform 0.2s ease; color: var(--text-dim); }
.week-group.collapsed .chevron { transform: rotate(-90deg); }
.week-days { padding: 6px; display: grid; gap: 6px; }
.week-group.collapsed .week-days { display: none; }

.day-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s ease;
}
.day-row:hover { background: var(--bg-soft); }
.day-row .type-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.day-row .day-info { flex: 1; }
.day-row .day-date { font-size: 0.88rem; font-weight: 600; }
.day-row .day-type-label { font-size: 0.78rem; color: var(--text-dim); }
.day-row .check-icon { font-size: 1.1rem; }
.day-row.today-highlight { border: 1px solid var(--accent); }

/* ---------------- PROGRESS ---------------- */
.progress-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.weight-log-form { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.weight-log-form input {
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  color: var(--text);
  padding: 9px 11px;
  border-radius: var(--radius-sm);
}
.stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px,1fr)); gap: 10px; }

/* ---------------- REFERENCE ---------------- */
.reference-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 720px) { .reference-grid { grid-template-columns: 1fr 1fr; } }
.ref-card h3 { display: flex; align-items: center; gap: 8px; }

/* ---------------- MODAL ---------------- */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  padding: 22px;
  position: relative;
  box-shadow: var(--shadow);
}
.modal-close {
  position: absolute;
  top: 14px; right: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--card-border);
  color: var(--text);
  border-radius: 50%;
  width: 32px; height: 32px;
  cursor: pointer;
}

@media (max-width: 600px) {
  .hero-top { flex-direction: column; }
  .today-title { font-size: 1.25rem; }
}