/* SECTION: Design System */
/* Dark, calm theme with blue accents, no yellow */
:root {
  color-scheme: dark;

  /* Colors */
  --color-bg: #020617;
  --color-surface: #020617; /* main panels */
  --color-surface-soft: #020617; /* secondary panels */
  --color-text: #e5e7eb;
  --color-text-soft: #9ca3af;
  --color-border: #1f2937;

  --color-accent: #2563eb;
  --color-accent-soft: #dbeafe;
  --color-accent-strong: #1d4ed8;

  --color-safe: #22c55e;
  --color-mostly-safe: #22c55e;
  --color-neutral: #6b7280;
  --color-can-eat: #f97316;
  --color-takeout: #6366f1;

  --shadow-soft: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.08);

  /* Typography */
  --font-sans: "Outfit", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;

  /* Transitions */
  --transition-fast: 0.16s ease-out;
  --transition-med: 0.22s ease-out;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top left, #020617 0, #020617 40%, #020617 100%);
  color: var(--color-text);
}

/* SECTION: Layout */
.app-shell {
  max-width: 900px;
  min-height: 100vh;
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) 80px;
  position: relative;
}

.app-header {
  padding: var(--space-4);
  margin-bottom: var(--space-5);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, #020617, #020617);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.header-main {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
}

.app-title {
  margin: 0 0 var(--space-1);
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.app-subtitle {
  margin: 0;
  max-width: 420px;
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.header-toggles {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.header-filters {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* SECTION: Toggles & Pills */
.toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.toggle input {
  display: none;
}

.toggle-slider {
  position: relative;
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.45);
  transition: background var(--transition-fast);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.25);
  transition: transform var(--transition-fast);
}

.toggle input:checked + .toggle-slider {
  background: var(--color-accent);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(16px);
}

.toggle-label {
  user-select: none;
}

.pill-checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 2px var(--space-3);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.pill-checkbox input {
  accent-color: var(--color-accent);
}

/* SECTION: Suggestion Banner */
.suggestion-banner {
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 1), rgba(15, 23, 42, 0.96));
  border: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  align-items: center;
}

.suggestion-title {
  margin: 0 0 var(--space-1);
  font-size: var(--font-size-lg);
}

.suggestion-text p {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.suggestion-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

/* SECTION: Tabs */
.tabs-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.tab-heading {
  margin: 0 0 var(--space-3);
  font-size: var(--font-size-xl);
}

.tab-panel.is-hidden {
  display: none;
}

/* SECTION: Cards */
.card {
  background: #020617;
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--color-border);
}

.card-title {
  margin: 0 0 var(--space-3);
  font-size: var(--font-size-md);
}

.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

/* SECTION: Inputs */
.input {
  width: 100%;
  padding: 10px 11px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-family: inherit;
  font-size: var(--font-size-sm);
  background: #020617;
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.input:focus-visible {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.18);
}

.select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #64748b 50%), linear-gradient(135deg, #64748b 50%, transparent 50%);
  background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%;
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

.textarea {
  resize: vertical;
  min-height: 70px;
}

.search {
  max-width: 220px;
}

label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-soft);
}

.stacked-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.inline-fields {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-1) 0 var(--space-2);
}

.checkbox {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.checkbox input {
  accent-color: var(--color-accent);
}

/* SECTION: Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 9px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.btn-primary {
  background: var(--color-accent);
  color: #f9fafb;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: var(--color-accent-strong);
  transform: translateY(-1px);
}

.btn-secondary {
  background: #e0ebff;
  color: var(--color-accent-strong);
}

.btn-secondary:hover {
  background: #d0e0ff;
}

.btn-ghost {
  background: transparent;
  border-color: rgba(148, 163, 184, 0.5);
  color: var(--color-text-soft);
}

.btn-ghost:hover {
  background: rgba(248, 250, 252, 0.9);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.45);
}

.full-width {
  width: 100%;
}

/* SECTION: Lists, Chips, Badges */
.list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.list-item-card {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: #020617;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.item-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}

.item-title {
  margin: 0;
  font-size: var(--font-size-sm);
}

.item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.badge {
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 500;
}

.badge-soft {
  background: rgba(148, 163, 184, 0.12);
  color: var(--color-text-soft);
}

.badge-safe {
  background: rgba(34, 197, 94, 0.12);
  color: #15803d;
}

.badge-neutral {
  background: rgba(234, 179, 8, 0.12);
  color: #854d0e;
}

.badge-can-eat {
  background: rgba(249, 115, 22, 0.12);
  color: #c2410c;
}

.badge-takeout {
  background: rgba(99, 102, 241, 0.12);
  color: #4f46e5;
}

.badge-kcal-hidden {
  opacity: 0.5;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.chip {
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(248, 250, 252, 0.9);
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.chip.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #f9fafb;
}

/* SECTION: Home */
.home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
  gap: var(--space-4);
}

.summary-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.summary-pill {
  padding: 8px 10px;
  border-radius: var(--radius-md);
  background: #020617;
  border: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
}

.summary-pill strong {
  display: block;
  font-size: var(--font-size-md);
  margin-bottom: 2px;
}

.quick-actions {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

/* SECTION: Weekly planner – one day at a time */
.plan-header-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.week-day-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.week-day-btn {
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text-soft);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.week-day-btn.is-selected {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #f9fafb;
  transform: translateY(-1px);
}

.day-plan {
  margin-top: var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.day-slot-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: rgba(15, 23, 42, 0.9);
  cursor: pointer;
  text-align: left;
}

.day-slot-row.is-empty {
  opacity: 0.7;
}

.day-slot-icon {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.12);
  font-size: 1.1rem;
}

.day-slot-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.day-slot-title {
  font-size: var(--font-size-sm);
}

.day-slot-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

/* SECTION: Plans */
.list-plans {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.plan-day {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: #020617;
  border: 1px solid var(--color-border);
}

.plan-day-title {
  margin: 0 0 var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.plan-meal-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  padding: 4px 0;
}

.plan-meal-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}

/* SECTION: Challenges */
#challenges-list {
  counter-reset: challengeCount;
}

.challenge-card {
  position: relative;
}

.challenge-card::before {
  counter-increment: challengeCount;
  content: "Level " counter(challengeCount);
  position: absolute;
  top: -10px;
  right: 12px;
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

.challenge-done {
  opacity: 0.6;
  text-decoration: line-through;
}

.challenge-actions {
  display: flex;
  gap: var(--space-2);
  margin-top: 4px;
}

.challenge-progress-badge {
  margin-top: 6px;
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

/* SECTION: Bottom Navigation */
.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: 100%;
  max-width: 900px;
  padding: 6px;
  display: flex;
  justify-content: space-around;
  gap: 4px;
  background: rgba(15, 23, 42, 0.9);
  border-radius: 999px;
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 45px rgba(15, 23, 42, 0.55);
}

.nav-item {
  flex: 1;
  border: none;
  background: transparent;
  color: rgba(226, 232, 240, 0.75);
  font-size: var(--font-size-sm);
  padding: 8px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.nav-item.is-active {
  background: linear-gradient(135deg, #38bdf8, #2563eb);
  color: #f9fafb;
  transform: translateY(-1px);
}

.nav-label {
  font-weight: 500;
}

/* SECTION: Utility & Effects */
.shadow-soft {
  box-shadow: var(--shadow-soft);
}

.gradient-mesh {
  background:
    radial-gradient(at 40% 20%, rgba(15, 23, 42, 1) 0, transparent 55%),
    radial-gradient(at 90% 0%, rgba(15, 23, 42, 1) 0, transparent 50%),
    radial-gradient(at 0% 60%, rgba(15, 23, 42, 1) 0, transparent 55%);
}

.grain::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='noStitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.28'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
  opacity: 0.15;
}

@media (max-width: 720px) {
  .app-shell {
    padding: var(--space-4) var(--space-3) 90px;
  }

  .header-main {
    flex-direction: column;
  }

  .home-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .suggestion-banner {
    align-items: flex-start;
  }

  .search {
    max-width: none;
  }
}