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

:root {
  --c-accent: #1D9E75;
  --c-accent-light: #E1F5EE;
  --c-accent-dark: #085041;
  --c-warn: #BA7517;
  --c-warn-light: #FAEEDA;
  --c-danger: #A32D2D;
  --c-danger-light: #FCEBEB;
  --c-blue: #185FA5;
  --c-blue-light: #E6F1FB;
  --bg: #f8f7f4;
  --bg-card: #ffffff;
  --bg-metric: #f1efe8;
  --text: #1a1a18;
  --text-muted: #6b6a65;
  --border: rgba(0,0,0,0.1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a18;
    --bg-card: #242422;
    --bg-metric: #2c2c2a;
    --text: #e8e6de;
    --text-muted: #888780;
    --border: rgba(255,255,255,0.1);
  }
}

body {
  font-family: 'DM Sans', system-ui, sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.header h1 { font-size: 22px; font-weight: 500; }
.subtitle { font-size: 12px; color: var(--text-muted); font-family: 'DM Mono', monospace; margin-top: 2px; }

.countdown-block { text-align: right; }
.countdown-label { font-size: 11px; color: var(--text-muted); }
.countdown { font-size: 22px; font-weight: 500; font-family: 'DM Mono', monospace; color: var(--c-accent); }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 1.5rem;
}

.metric {
  background: var(--bg-metric);
  border-radius: 8px;
  padding: 12px 14px;
}

.metric-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; }
.metric-val { font-size: 22px; font-weight: 500; font-family: 'DM Mono', monospace; }
.metric-sub { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.nav {
  display: flex;
  margin-bottom: 1.25rem;
  border-bottom: 0.5px solid var(--border);
}

.nav-btn {
  padding: 8px 16px;
  border: none;
  background: none;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all .15s;
}

.nav-btn.active { color: var(--c-accent); border-bottom-color: var(--c-accent); font-weight: 500; }
.nav-btn:hover:not(.active) { color: var(--text); }

.tab { display: none; }
.tab.active { display: block; }

.card {
  background: var(--bg-card);
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.25rem;
  margin-bottom: 12px;
}

.card-title {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.hint { font-size: 13px; color: var(--text-muted); margin-bottom: 1rem; }

table.plan { width: 100%; border-collapse: collapse; font-size: 12px; }
table.plan th {
  text-align: left; padding: 6px 8px;
  border-bottom: 0.5px solid var(--border);
  color: var(--text-muted); font-weight: 500;
  font-size: 11px; text-transform: uppercase; letter-spacing: .4px;
  white-space: nowrap;
}
table.plan td {
  padding: 7px 8px;
  border-bottom: 0.5px solid var(--border);
  vertical-align: top; line-height: 1.4;
}
table.plan tr:last-child td { border-bottom: none; }
table.plan tr.current-week td { background: var(--c-accent-light); }
table.plan tr.race-week td { background: var(--c-warn-light); }
table.plan tr:hover td { background: var(--bg-metric); }

.badge {
  display: inline-block; padding: 2px 8px;
  border-radius: 20px; font-size: 11px; font-weight: 500;
}
.badge-dev { background: var(--c-blue-light); color: var(--c-blue); }
.badge-peak { background: #EAF3DE; color: #3B6D11; }
.badge-taper { background: var(--c-warn-light); color: var(--c-warn); }
.badge-load { background: var(--c-accent-light); color: var(--c-accent-dark); }
.badge-race { background: var(--c-danger-light); color: var(--c-danger); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 12px; color: var(--text-muted); font-weight: 500; }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 8px 10px;
  border: 0.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
}
.form-group textarea { resize: vertical; min-height: 70px; }

.btn-primary {
  background: var(--c-accent); color: white;
  border: none; padding: 9px 20px;
  border-radius: 8px; cursor: pointer;
  font-family: inherit; font-size: 13px; font-weight: 500;
  transition: opacity .15s;
}
.btn-primary:hover { opacity: .85; }

.btn-sm {
  padding: 5px 12px; font-size: 12px;
  background: var(--bg-metric);
  border: 0.5px solid var(--border);
  border-radius: 8px; cursor: pointer;
  font-family: inherit; color: var(--text);
}
.btn-sm:hover { opacity: .8; }

.save-msg { font-size: 12px; color: var(--c-accent); display: none; }

.run-item {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 10px 0; border-bottom: 0.5px solid var(--border);
}
.run-item:last-child { border-bottom: none; }
.run-date { font-size: 11px; color: var(--text-muted); font-family: 'DM Mono', monospace; min-width: 58px; }
.run-info { flex: 1; }
.run-title { font-size: 13px; font-weight: 500; margin-bottom: 2px; }
.run-meta { font-size: 12px; color: var(--text-muted); font-family: 'DM Mono', monospace; }
.run-note { font-size: 12px; color: var(--text-muted); margin-top: 3px; font-style: italic; }
.pace-good { color: var(--c-accent); }
.pace-ok { color: var(--c-warn); }
.pace-off { color: var(--c-danger); }

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

.chart-wrap { position: relative; width: 100%; height: 220px; }

.empty { text-align: center; padding: 2rem; color: var(--text-muted); font-size: 13px; }

.suggestion {
  border-left: 3px solid var(--c-blue);
  padding: 8px 12px;
  background: var(--c-blue-light);
  border-radius: 0 8px 8px 0;
  font-size: 13px;
  margin-bottom: 8px;
  color: var(--c-blue);
}
.suggestion.warn { border-color: var(--c-warn); background: var(--c-warn-light); color: var(--c-warn); }
.suggestion.good { border-color: var(--c-accent); background: var(--c-accent-light); color: var(--c-accent-dark); }

@media (max-width: 600px) {
  /* Layout */
  .app { padding: 0.875rem 0.75rem 4rem; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.full { grid-column: 1; }
  .card { padding: 0.875rem 0.875rem; }

  /* Header */
  .header { flex-direction: column; gap: 6px; }
  .header h1 { font-size: 18px; }
  .countdown { font-size: 18px; }

  /* Nav — горизонтальный скролл без скроллбара */
  .nav { overflow-x: auto; flex-wrap: nowrap; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
  .nav::-webkit-scrollbar { display: none; }
  .nav-btn { padding: 8px 12px; font-size: 12px; white-space: nowrap; flex-shrink: 0; min-height: 44px; }

  /* Метрики */
  .metric { padding: 10px 12px; }
  .metric-val { font-size: 20px; }
  .metric-label { font-size: 10px; }

  /* Форма — font-size 16px предотвращает зум на iOS */
  .form-group input,
  .form-group select,
  .form-group textarea { font-size: 16px; padding: 10px 10px; }

  /* Touch targets */
  .btn-primary { min-height: 44px; font-size: 14px; }
  .btn-sm { min-height: 36px; display: inline-flex; align-items: center; justify-content: center; }

  /* План — горизонтальный скролл */
  table.plan { min-width: 560px; }
  table.plan th, table.plan td { padding: 5px 6px; font-size: 11px; }

  /* Калькулятор */
  .calc-tab-btn { font-size: 11px; padding: 6px 10px; }
  .calc-result { font-size: 13px; }

  /* Графики */
  .chart-wrap { height: 180px; }

  /* Журнал */
  .run-meta { font-size: 11px; }
}

/* ── Калькулятор ── */
.calc-tab-btn {
  padding: 7px 14px; font-size: 12px; font-weight: 500;
  border: 0.5px solid var(--border); border-radius: 20px;
  background: none; color: var(--text-muted); cursor: pointer;
  font-family: inherit; transition: all .15s;
}
.calc-tab-btn.active {
  background: var(--c-accent); color: white; border-color: var(--c-accent);
}
.calc-tab-btn:hover:not(.active) { background: var(--bg-metric); }

.calc-result {
  margin-top: 10px; padding: 10px 14px;
  background: var(--bg-metric); border-radius: 8px;
  font-family: 'DM Mono', monospace; font-size: 14px;
  color: var(--c-accent); font-weight: 500; min-height: 40px;
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.calc-result.empty { color: var(--text-muted); font-weight: 400; }
.calc-result .calc-item { display: flex; flex-direction: column; gap: 1px; }
.calc-result .calc-label { font-size: 10px; color: var(--text-muted); font-weight: 400; text-transform: uppercase; letter-spacing: .4px; }
.calc-result .calc-val { font-size: 16px; }

/* ── Экран входа ── */
.login-screen {
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  background: var(--bg);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.login-screen.active { display: flex; }
.login-card {
  text-align: center;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 0.5px solid var(--border);
  border-radius: 16px;
  max-width: 320px;
  width: 100%;
}
.login-card h2 { font-size: 20px; font-weight: 500; margin-bottom: 6px; }
.login-card p  { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }

/* ── Редактирование плана ── */
.plan-save-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}
.plan td.editable input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 4px;
  padding: 3px 5px;
  font-family: inherit;
  font-size: 12px;
  color: var(--text);
  min-width: 80px;
  box-sizing: border-box;
}
.plan td.editable input:focus {
  outline: 1.5px solid var(--c-accent);
  background: var(--bg-card);
}

/* ── Детали тренировки ── */
.run-detail-overlay {
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  background: rgba(0,0,0,0.45);
  z-index: 100;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
  box-sizing: border-box;
}
.run-detail-overlay.active { display: flex; }
.run-detail-card {
  background: var(--bg-card);
  border-radius: 16px 16px 12px 12px;
  padding: 20px;
  width: 100%;
  max-width: 480px;
  max-height: 85vh;
  overflow-y: auto;
}
.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  gap: 12px;
}
.detail-row:last-child { border-bottom: none; }
.detail-label {
  color: var(--text-muted);
  font-size: 13px;
  flex-shrink: 0;
}

/* ── Бейджи дистанций для забегов ── */
.badge-4k   { background: var(--bg-metric);       color: var(--text-muted); }
.badge-5k   { background: var(--c-blue-light);    color: var(--c-blue); }
.badge-10k  { background: var(--c-accent-light);  color: var(--c-accent-dark); }
.badge-hm   { background: var(--c-warn-light);    color: var(--c-warn); }
.badge-marathon { background: var(--c-danger-light); color: var(--c-danger); }