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

:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --surface2: #242424;
  --border: #333;
  --accent: #e8630a;
  --accent-dim: #b34e08;
  --text: #f0f0f0;
  --text-muted: #888;
  --green: #4caf50;
  --red: #e53935;
  --radius: 10px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { font-size: 16px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  padding-bottom: 80px;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  height: 50px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.nav-title { font-size: 1.1rem; font-weight: 700; }
.nav-links { display: flex; gap: 16px; }
.nav-links a { color: var(--text-muted); text-decoration: none; font-size: 0.9rem; }
.nav-links a.active { color: var(--accent); }

/* Bottom tab bar for mobile */
.tab-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--border);
  z-index: 10;
}
.tab-bar a {
  flex: 1;
  text-align: center;
  padding: 10px 4px 6px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.7rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}
.tab-bar a.active { color: var(--accent); }
.tab-bar svg { width: 22px; height: 22px; }

/* Container */
.container { max-width: 600px; margin: 0 auto; padding: 16px; }

/* Headings */
h1 { font-size: 1.4rem; margin-bottom: 4px; }
h2 { font-size: 1.1rem; margin-bottom: 8px; }
h3 { font-size: 1rem; }
.subtitle { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px; }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
}
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity 0.15s;
  text-decoration: none;
}
.btn:active { opacity: 0.75; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--red); color: #fff; }
.btn-sm { padding: 7px 13px; font-size: 0.85rem; }
.btn-full { width: 100%; }

/* Day selector */
.day-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}
.day-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  font-size: 0.95rem;
  font-weight: 600;
  transition: border-color 0.15s, background 0.15s;
}
.day-btn:hover, .day-btn.selected { border-color: var(--accent); background: var(--surface2); }

/* Exercise card */
.exercise-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
}
.exercise-header {
  padding: 12px 14px;
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.exercise-name { font-weight: 700; font-size: 1rem; }
.exercise-target { color: var(--text-muted); font-size: 0.82rem; }

/* Set rows */
.set-row {
  display: grid;
  grid-template-columns: 36px 1fr 1fr;
  gap: 8px;
  align-items: center;
  padding: 8px 14px;
  border-top: 1px solid var(--border);
}
.set-label { color: var(--text-muted); font-size: 0.85rem; text-align: center; font-weight: 600; }
.set-input {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.1rem;
  padding: 10px 10px;
  width: 100%;
  text-align: center;
}
.set-input:focus { outline: none; border-color: var(--accent); }
.set-input::placeholder { color: var(--text-muted); font-size: 0.85rem; }
.input-label { color: var(--text-muted); font-size: 0.72rem; text-align: center; margin-top: 2px; }

/* Column headers for sets */
.set-col-headers {
  display: grid;
  grid-template-columns: 36px 1fr 1fr;
  gap: 8px;
  padding: 6px 14px 2px;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-align: center;
}

/* History */
.log-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  overflow: hidden;
}
.log-header {
  padding: 12px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.log-header:hover { background: var(--surface2); }
.log-date { font-weight: 700; }
.log-day { color: var(--text-muted); font-size: 0.85rem; }
.log-body { padding: 12px 14px; border-top: 1px solid var(--border); display: none; }
.log-body.open { display: block; }
.log-exercise { margin-bottom: 10px; }
.log-exercise-name { font-weight: 600; margin-bottom: 4px; }
.log-set { font-size: 0.85rem; color: var(--text-muted); padding: 2px 0; }

/* Program page */
textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: monospace;
  font-size: 0.9rem;
  padding: 12px;
  resize: vertical;
  min-height: 200px;
}
textarea:focus { outline: none; border-color: var(--accent); }

input[type="text"], input[type="password"] {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  padding: 10px 12px;
  width: 100%;
}
input:focus { outline: none; border-color: var(--accent); }

.form-group { margin-bottom: 14px; }
label { display: block; font-size: 0.85rem; color: var(--text-muted); margin-bottom: 6px; }

/* Parse preview */
.preview-day { margin-bottom: 12px; }
.preview-day-label { font-weight: 700; color: var(--accent); margin-bottom: 4px; }
.preview-ex { font-size: 0.88rem; padding: 3px 0; color: var(--text-muted); }
.preview-ex strong { color: var(--text); }

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-green { background: rgba(76,175,80,0.15); color: var(--green); }
.badge-orange { background: rgba(232,99,10,0.15); color: var(--accent); }

/* Divider */
.divider { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* Empty state */
.empty { text-align: center; color: var(--text-muted); padding: 40px 0; }
.empty h3 { margin-bottom: 8px; }

/* Toast */
.toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: 0.9rem;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show { opacity: 1; }
.toast.success { border-color: var(--green); color: var(--green); }
.toast.error { border-color: var(--red); color: var(--red); }

/* Spinner */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Evernote push button */
.evernote-btn {
  background: #2dbe60;
  color: #fff;
}
.evernote-btn:disabled { opacity: 0.5; }

/* Workout complete screen */
.complete-screen {
  text-align: center;
  padding: 40px 0;
}
.complete-screen h2 { font-size: 1.8rem; margin-bottom: 8px; }
.complete-screen .sub { color: var(--text-muted); margin-bottom: 24px; }

/* Notes textarea small */
.notes-area {
  min-height: 80px;
  margin-bottom: 14px;
}

/* Program list */
.program-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
}
.program-item.active-program { border-color: var(--accent); }
.program-actions { display: flex; gap: 8px; }

@media (min-width: 600px) {
  .day-grid { grid-template-columns: repeat(3, 1fr); }
}