@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  /* === DW Brand — Light === */
  --accent: #2952CC;
  --accent-dark: #1e3fa8;
  --accent-light: #4A78E0;
  --accent-bg: #edf1fc;
  --accent-glow: rgba(41, 82, 204, 0.18);

  --green: #0d7d5a;
  --green-dark: #065c40;
  --green-light: #30C090;
  --green-bg: rgba(13, 125, 90, 0.08);

  --red: #C62828;
  --red-bg: rgba(198, 40, 40, 0.06);

  --amber: #b07800;
  --amber-bg: rgba(176, 120, 0, 0.08);

  --text: #1a1f2e;
  --text-2: #3d4660;
  --text-3: #6b7490;
  --text-inv: #FFFFFF;

  --bg: #fafbfe;
  --bg-warm: linear-gradient(170deg, #f0f2fa 0%, #fafbfe 50%, #f5f7fd 100%);
  --card: #FFFFFF;
  --card-border: rgba(216, 220, 232, 0.6);
  --divider: rgba(216, 220, 232, 0.8);

  --shadow-1: 0 1px 3px rgba(26, 31, 46, 0.06);
  --shadow-2: 0 4px 16px rgba(26, 31, 46, 0.08);
  --shadow-3: 0 12px 40px rgba(26, 31, 46, 0.12);
  --shadow-accent: 0 4px 20px rgba(41, 82, 204, 0.20);
  --shadow-green: 0 4px 20px rgba(13, 125, 90, 0.20);

  --r: 8px;
  --r-sm: 6px;
  --r-lg: 12px;
  --r-full: 999px;

  --font: 'Instrument Sans', -apple-system, sans-serif;
  --font-display: 'Instrument Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.5;
}

/* === Typography === */
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.02em; line-height: 1.2; }

a { color: var(--accent); text-decoration: none; font-weight: 600; }
a:hover { opacity: 0.8; }

/* === Buttons === */
button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
  border-radius: var(--r);
  padding: 12px 24px;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  transition: all 0.2s cubic-bezier(.4,0,.2,1);
  -webkit-tap-highlight-color: transparent;
}
button:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: var(--text-inv);
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-success {
  background: var(--green);
  color: var(--text-inv);
  box-shadow: var(--shadow-green);
}

.btn-outline {
  background: var(--card);
  border: 2px solid var(--divider);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  background: transparent;
  color: var(--text-2);
  padding: 10px 16px;
}
.btn-ghost:hover { background: var(--accent-bg); color: var(--accent); }

.btn-danger { background: var(--red); color: var(--text-inv); }
.btn-sm { padding: 8px 16px; font-size: 0.82rem; border-radius: var(--r-sm); }
.btn-full { width: 100%; }

/* === Inputs === */
input, select, textarea {
  font-family: var(--font);
  background: var(--card);
  color: var(--text);
  border: 2px solid var(--divider);
  border-radius: var(--r);
  padding: 12px 16px;
  font-size: 0.88rem;
  font-weight: 500;
  width: 100%;
  outline: none;
  transition: border-color 0.2s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
input::placeholder, textarea::placeholder { color: var(--text-3); font-weight: 400; }

/* === Cards === */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  padding: 20px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-1);
}

/* === Page Layout === */
.page {
  max-width: 440px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: 96px;
  min-height: 100dvh;
  background: var(--bg-warm);
}

.page-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 18px;
}

/* === Progress Bars === */
.progress-bar {
  width: 100%;
  height: 10px;
  background: rgba(0,0,0,0.05);
  border-radius: var(--r-full);
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  border-radius: var(--r-full);
  transition: width 0.6s cubic-bezier(.4,0,.2,1);
}

/* === Status Helpers === */
.status-earned { color: var(--green); }
.status-locked { color: var(--red); }

/* === Section Title (small label) === */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  margin-bottom: 10px;
}

/* === Checklist === */
.checklist-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--divider);
  font-size: 0.9rem;
  font-weight: 500;
}
.checklist-item:last-child { border-bottom: none; }
.checklist-check { font-size: 1.15rem; min-width: 26px; }
.checklist-points {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-3);
  background: rgba(0,0,0,0.04);
  padding: 3px 10px;
  border-radius: var(--r-full);
}

/* === Bottom Navigation === */
.nav-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--divider);
  display: flex;
  justify-content: space-around;
  padding: 4px 0 env(safe-area-inset-bottom, 6px);
  z-index: 100;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  color: var(--text-3);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 6px 14px;
  text-decoration: none;
  transition: color 0.15s;
  border-radius: var(--r-sm);
  position: relative;
}
.nav-item.active { color: var(--accent); }
.nav-item.active::before {
  content: '';
  position: absolute;
  top: -4px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.nav-icon { font-size: 1.2rem; margin-bottom: 1px; }

/* === Forms === */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-2);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

/* === Option Grid === */
.option-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.option-btn {
  background: var(--card);
  border: 2px solid var(--divider);
  border-radius: var(--r-lg);
  padding: 18px 12px;
  text-align: center;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-1);
}
.option-btn:hover { border-color: var(--accent-light); transform: translateY(-2px); box-shadow: var(--shadow-2); }
.option-btn.selected {
  border-color: var(--accent);
  background: var(--accent-bg);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* === Chips === */
.chip-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--card);
  border: 2px solid var(--divider);
  border-radius: var(--r-full);
  padding: 8px 18px;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}
.chip:hover { border-color: var(--accent-light); }
.chip.selected {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--text-inv);
}

/* === Reward Cards === */
.reward-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  border-bottom: 1px solid var(--divider);
}
.reward-card:last-child { border-bottom: none; }

/* === Likert Scale === */
.likert-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 8px 0 18px;
  justify-content: center;
}
.likert-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--card);
  border: 2px solid var(--divider);
  color: var(--text);
  font-weight: 600;
  font-size: 0.88rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: var(--shadow-1);
}
.likert-btn:hover { border-color: var(--accent); transform: scale(1.1); }
.likert-btn.selected {
  border-color: transparent;
  background: var(--accent);
  color: var(--text-inv);
  box-shadow: var(--shadow-accent);
  transform: scale(1.1);
}
.likert-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--text-3);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* === Gate Banner === */
.gate-banner {
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--r-lg);
  margin-bottom: 14px;
  position: relative;
}
.gate-earned {
  background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 50%, #E0F2F1 100%);
  border: 2px solid rgba(0,200,83,0.2);
}
.gate-locked {
  background: linear-gradient(135deg, #FFF3E0 0%, #FFE0B2 50%, #FFF8E1 100%);
  border: 2px solid rgba(255,87,34,0.15);
}
.gate-pts {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 8px 0;
}

/* === Meal Sections === */
.meal-section { margin-bottom: 18px; }
.meal-title {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
  margin-bottom: 6px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--divider);
}

/* === States === */
.loading {
  display: flex;
  justify-content: center;
  padding: 60px;
  color: var(--text-3);
  font-weight: 600;
}
.error-msg {
  background: var(--red-ghost);
  border: 2px solid rgba(255,23,68,0.15);
  padding: 12px 16px;
  border-radius: var(--r);
  color: var(--red);
  font-weight: 600;
  font-size: 0.88rem;
  margin-bottom: 14px;
}

/* === Animations === */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page > .card:nth-child(1) { animation: fadeUp 0.3s ease-out both; }
.page > .card:nth-child(2) { animation: fadeUp 0.3s ease-out 0.06s both; }
.page > .card:nth-child(3) { animation: fadeUp 0.3s ease-out 0.12s both; }
.page > .card:nth-child(4) { animation: fadeUp 0.3s ease-out 0.18s both; }
.gate-banner { animation: popIn 0.35s cubic-bezier(.4,0,.2,1) both; }
.gate-pts { animation: countUp 0.4s ease-out 0.15s both; }


/* === Dark Mode === */
@media (prefers-color-scheme: dark) {
  :root {
    --accent: #6B9BFF;
    --accent-dark: #4A78E0;
    --accent-light: #8BB5FF;
    --accent-bg: #101630;
    --accent-glow: rgba(107, 155, 255, 0.18);

    --green: #30C090;
    --green-dark: #20A070;
    --green-light: #50D8A8;
    --green-bg: rgba(48, 192, 144, 0.10);

    --red: #EF5350;
    --red-bg: rgba(239, 83, 80, 0.10);

    --amber: #F0B040;
    --amber-bg: rgba(240, 176, 64, 0.10);

    --text: #eaecf4;
    --text-2: #b0b8d0;
    --text-3: #7882a0;
    --text-inv: #0a0b12;

    --bg: #0a0b12;
    --bg-warm: linear-gradient(170deg, #0e1020 0%, #0a0b12 50%, #0c0e1a 100%);
    --card: #12131d;
    --card-border: rgba(34, 40, 64, 0.8);
    --divider: rgba(34, 40, 64, 0.8);

    --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-2: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-3: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-accent: 0 4px 20px rgba(107, 155, 255, 0.15);
    --shadow-green: 0 4px 20px rgba(48, 192, 144, 0.15);
  }

  body { background: var(--bg); color: var(--text); }

  .nav-bar {
    background: rgba(10, 11, 18, 0.92);
  }

  input, select, textarea {
    background: var(--bg);
    color: var(--text);
  }

  .gate-earned {
    background: linear-gradient(135deg, rgba(48,192,144,0.12) 0%, rgba(48,192,144,0.06) 100%);
    border-color: rgba(48,192,144,0.25);
  }

  .gate-locked {
    background: linear-gradient(135deg, rgba(107,155,255,0.10) 0%, rgba(107,155,255,0.05) 100%);
    border-color: rgba(107,155,255,0.15);
  }

  .option-btn, .chip {
    background: var(--card);
  }

  .likert-btn {
    background: var(--card);
  }
}

/* === Manual theme override === */
:root[data-theme="dark"] {
  --accent: #6B9BFF;
  --accent-dark: #4A78E0;
  --accent-light: #8BB5FF;
  --accent-bg: #101630;
  --accent-glow: rgba(107, 155, 255, 0.18);
  --green: #30C090;
  --green-dark: #20A070;
  --green-light: #50D8A8;
  --green-bg: rgba(48, 192, 144, 0.10);
  --red: #EF5350;
  --red-bg: rgba(239, 83, 80, 0.10);
  --amber: #F0B040;
  --amber-bg: rgba(240, 176, 64, 0.10);
  --text: #eaecf4;
  --text-2: #b0b8d0;
  --text-3: #7882a0;
  --text-inv: #0a0b12;
  --bg: #0a0b12;
  --bg-warm: linear-gradient(170deg, #0e1020 0%, #0a0b12 50%, #0c0e1a 100%);
  --card: #12131d;
  --card-border: rgba(34, 40, 64, 0.8);
  --divider: rgba(34, 40, 64, 0.8);
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-2: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-3: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 4px 20px rgba(107, 155, 255, 0.15);
  --shadow-green: 0 4px 20px rgba(48, 192, 144, 0.15);
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--divider); border-radius: 4px; }

/* === Mobile === */
@media (max-width: 380px) {
  .page { padding: 12px 10px 96px; }
  .gate-pts { font-size: 2.2rem; }
  .option-grid { gap: 8px; }
  .option-btn { padding: 14px 10px; }
}