/* =========================================================================
   CoachGPT — Design tokens
   Display: Space Grotesk (brand, headers, numbers)
   Body:    Inter
   Palette: "Ember" (workout/energy) + "Mint" (nutrition/health) on a
   deep pine-charcoal dark theme / cool off-white light theme.
   ========================================================================= */

:root {
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --ember: #FF6B3D;
  --ember-dim: #E85A2D;
  --mint: #45D998;
  --mint-dim: #2FBF82;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-1: 0 1px 2px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.12);
}

[data-theme="dark"] {
  --bg: #0E1512;
  --surface: #161F1B;
  --surface-2: #1D2823;
  --border: #2A3830;
  --text: #EDF3EE;
  --text-muted: #8FA398;
  --input-bg: #101914;
}

[data-theme="light"] {
  --bg: #F5F7F3;
  --surface: #FFFFFF;
  --surface-2: #EEF2ED;
  --border: #DCE4DE;
  --text: #16201C;
  --text-muted: #5B6B60;
  --input-bg: #FFFFFF;
  --shadow-1: 0 1px 2px rgba(20,30,25,0.06), 0 8px 24px rgba(20,30,25,0.06);
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body { transition: background 0.25s ease, color 0.25s ease; }

button, input, select, textarea { font-family: inherit; color: inherit; }

.hidden { display: none !important; }

::selection { background: var(--ember); color: #fff; }

/* Focus visibility (accessibility floor) */
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ember);
  outline-offset: 2px;
}

/* ===================== Brand ===================== */
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--ember), var(--mint));
  color: #0E1512;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
}

/* ===================== Onboarding ===================== */
.screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.onboard-card {
  width: 100%;
  max-width: 460px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-1);
}

.onboard-card h1 {
  font-family: var(--font-display);
  font-size: 26px;
  margin-top: 20px;
  letter-spacing: -0.01em;
}

.onboard-card .sub {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 6px;
  margin-bottom: 24px;
  line-height: 1.5;
}

.field-group { margin-bottom: 18px; }
.field-group label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.pill-select { display: flex; gap: 8px; flex-wrap: wrap; }
.pill {
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
}
.pill:hover { border-color: var(--ember); }
.pill.selected {
  background: var(--ember);
  border-color: var(--ember);
  color: #fff;
}

input[type="number"], input[type="text"] {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  font-size: 14px;
}

.btn-primary {
  background: var(--ember);
  color: #fff;
  border: none;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn-primary:hover { background: var(--ember-dim); }
.btn-primary:active { transform: scale(0.98); }
.btn-block { width: 100%; margin-top: 8px; }

/* ===================== App layout ===================== */
.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  height: 100vh;
}

.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
}

.nav { margin-top: 32px; display: flex; flex-direction: column; gap: 4px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  background: none; border: none;
  color: var(--text-muted);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--surface-2); color: var(--ember); }

.sidebar-footer {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.profile-chip {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.4;
}

.theme-toggle {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }

/* ===================== Views ===================== */
.view { display: none; flex-direction: column; padding: 28px 36px; overflow-y: auto; height: 100vh; }
.view.active { display: flex; }

.view-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 24px;
}
.view-header h2 {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.01em;
}
.muted { color: var(--text-muted); font-size: 13.5px; margin-top: 4px; }

.status-dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--mint);
  margin-top: 6px;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--mint) 25%, transparent);
}

/* ===== Chat ===== */
.chat-window {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-bottom: 16px;
}

.msg { display: flex; gap: 12px; max-width: 720px; }
.msg-user { align-self: flex-end; flex-direction: row-reverse; }

.avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--ember), var(--mint));
  color: #0E1512;
  font-family: var(--font-display);
  font-weight: 700; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.msg-user .avatar { background: var(--surface-2); color: var(--text); }

.bubble {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 13px 16px;
  border-radius: var(--radius-md);
  font-size: 14.5px;
  line-height: 1.6;
  white-space: pre-wrap;
}
.msg-user .bubble { background: var(--surface-2); }

.chat-input-bar {
  display: flex; gap: 10px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 8px;
}
.chat-input-bar input {
  flex: 1;
  padding: 12px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--input-bg);
  font-size: 14px;
}
.chat-input-bar .btn-primary { border-radius: var(--radius-pill); padding: 12px 22px; }

/* ===== Meal planner ===== */
.meal-controls {
  display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap;
  margin-bottom: 24px;
}
.field-inline label {
  display: block; font-size: 12px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em;
  color: var(--text-muted); margin-bottom: 6px;
}
.field-inline select {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--input-bg);
  font-size: 13.5px;
  min-width: 170px;
}

.meal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}

.meal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
}
.meal-card h4 {
  font-family: var(--font-display);
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--ember);
}
.meal-card ul { padding-left: 18px; font-size: 13.5px; line-height: 1.7; }
.meal-card .meal-meta {
  margin-top: 10px; font-size: 12px; color: var(--text-muted);
  border-top: 1px solid var(--border); padding-top: 8px;
}

.meal-summary {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between; align-items: center;
  background: var(--surface-2);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 13.5px;
  color: var(--text-muted);
}
.meal-summary strong { color: var(--mint); font-family: var(--font-display); }

/* ===== Progress ===== */
.progress-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  align-items: start;
}

.progress-card, .history-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.ring-wrap { position: relative; width: 140px; height: 140px; margin: 0 auto 20px; }
.ring { width: 140px; height: 140px; transform: rotate(-90deg); }
.ring-track { fill: none; stroke: var(--surface-2); stroke-width: 10; }
.ring-fill {
  fill: none;
  stroke: var(--ember);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-dasharray: 377;
  stroke-dashoffset: 377;
  transition: stroke-dashoffset 0.4s ease, stroke 0.4s ease;
}
.ring-label {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.ring-label span:first-child {
  font-family: var(--font-display);
  font-size: 26px; font-weight: 700;
}
.ring-sub { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

#progress-slider { width: 100%; margin: 12px 0 18px; accent-color: var(--ember); }

.checkbox-row { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.checkbox { display: flex; align-items: center; gap: 8px; font-size: 13.5px; cursor: pointer; }
.checkbox input { accent-color: var(--mint); width: 16px; height: 16px; }

textarea {
  width: 100%; min-height: 70px; resize: vertical;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--input-bg);
  font-size: 13.5px;
  margin-bottom: 14px;
}

.save-confirm { text-align: center; font-size: 12.5px; color: var(--mint); margin-top: 10px; min-height: 16px; }

.history-card h3 { font-family: var(--font-display); font-size: 15px; margin-bottom: 14px; }
.history-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.history-list li {
  display: flex; justify-content: space-between;
  font-size: 13px; padding: 10px 12px;
  background: var(--surface-2);
  border-radius: var(--radius-sm);
}
.history-list .hist-pct { font-family: var(--font-display); color: var(--mint); font-weight: 600; }

/* ===================== Responsive ===================== */
@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar { flex-direction: row; align-items: center; padding: 14px 18px; }
  .nav { margin-top: 0; flex-direction: row; }
  .nav-item span, .nav-item { font-size: 0; gap: 0; padding: 8px; }
  .nav-item svg { width: 20px; height: 20px; }
  .sidebar-footer { display: none; }
  .view { padding: 20px; height: auto; }
  .progress-layout { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}