:root {
  --bg: #0b0f17;
  --card: #161d2b;
  --card-border: #263049;
  --text: #e8ecf4;
  --text-subtle: #8b95ab;
  --accent: #4f8cff;
  --accent-2: #34d399;
  --danger: #f87171;
  --radius: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
}

.hidden { display: none !important; }

.screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Login */
#login-screen {
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.login-card {
  width: 100%;
  max-width: 360px;
  text-align: center;
}
.login-card h1 {
  margin-bottom: 24px;
}
#login-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
#passphrase {
  padding: 14px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--text);
  font-size: 16px;
}
button {
  padding: 14px 16px;
  border-radius: var(--radius);
  border: none;
  background: var(--accent);
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
}
button:active { opacity: 0.8; }
.error { color: var(--danger); font-size: 14px; margin-top: 4px; }

/* App shell */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: max(16px, env(safe-area-inset-top)) 20px 8px;
}
.app-header h1 { margin: 0; font-size: 22px; }
.subtle { color: var(--text-subtle); margin: 4px 0 0; font-size: 14px; }

.streak-badge {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 8px 14px;
  text-align: center;
}
.streak-badge #streak-count {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-2);
}
.streak-label {
  font-size: 11px;
  color: var(--text-subtle);
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 8px 20px;
}
.tab-btn {
  flex: 1;
  background: var(--card);
  color: var(--text-subtle);
  border: 1px solid var(--card-border);
  font-weight: 600;
  padding: 10px;
}
.tab-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.tab-panel {
  padding: 8px 16px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Routine cards */
.routine-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 16px;
}
.routine-card h2 {
  margin: 0 0 4px;
  font-size: 18px;
}
.routine-card .routine-meta {
  color: var(--text-subtle);
  font-size: 13px;
  margin-bottom: 12px;
}
.block {
  margin-bottom: 18px;
}
.block:last-child { margin-bottom: 0; }
.block-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 2px;
}
.block-note {
  font-size: 12px;
  color: var(--text-subtle);
  margin-bottom: 8px;
}
.exercise {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--card-border);
}
.block-title + .exercise,
.block-note + .exercise {
  border-top: none;
}
.exercise input[type="checkbox"] {
  width: 24px;
  height: 24px;
  margin-top: 2px;
  accent-color: var(--accent-2);
  flex-shrink: 0;
}
.exercise-body { flex: 1; }
.exercise-name {
  font-weight: 600;
  font-size: 15px;
}
.exercise-name.done {
  text-decoration: line-through;
  color: var(--text-subtle);
}
.exercise-dose {
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 600;
}
.exercise-instructions {
  color: var(--text-subtle);
  font-size: 13px;
  margin-top: 2px;
}

.progress-bar {
  height: 6px;
  border-radius: 3px;
  background: #0b0f17;
  overflow: hidden;
  margin-bottom: 12px;
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent-2);
  transition: width 0.2s ease;
}

/* History */
.history-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--card-border);
}
.history-row:first-child { border-top: none; }
.history-date {
  width: 84px;
  font-size: 13px;
  color: var(--text-subtle);
}
.history-dots {
  display: flex;
  gap: 6px;
  flex: 1;
}
.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--card-border);
}
.dot.complete { background: var(--accent-2); }
.dot.partial { background: #d9a441; }
.dot.na { background: transparent; border: 1px dashed var(--card-border); }
.history-summary {
  font-size: 12px;
  color: var(--text-subtle);
  min-width: 70px;
  text-align: right;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-subtle);
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--card-border);
}
.settings-row select {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  padding: 6px 8px;
}