/* ============================================================
   Design tokens
   Subject: a dietitian's weekly chart, brought online.
   Palette: warm paper, deep forest ink, terracotta accent, sage for tags.
   Type: Fraunces (display/editorial warmth) + Inter (body) + JetBrains Mono (data/time).
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Palette */
  --paper: #FAF7F0;
  --paper-raised: #FFFFFF;
  --ink: #2B3A2E;
  --ink-soft: #5B6B5C;
  --terracotta: #C76B3F;
  --terracotta-deep: #A6532E;
  --sage: #7A8B6F;
  --sage-deep: #5E6E51;
  --parchment: #E8DFC8;
  --parchment-line: #DCD2B8;
  --danger: #B3432B;
  --danger-bg: #F8E9E2;

  /* Type */
  --font-display: 'Fraunces', 'Georgia', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

  /* Scale */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 1px 2px rgba(43, 58, 46, 0.06), 0 4px 16px rgba(43, 58, 46, 0.06);
  --shadow-pop: 0 8px 30px rgba(43, 58, 46, 0.16);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  color: var(--ink);
  letter-spacing: -0.01em;
}

p { margin: 0 0 var(--space-3) 0; }

a { color: var(--terracotta-deep); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  font-family: var(--font-body);
  cursor: pointer;
}

input, select, textarea {
  font-family: var(--font-body);
  font-size: 15px;
}

::selection { background: var(--parchment); }

/* Focus visibility - never remove outlines, just style them deliberately */
:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 2px;
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================================================
   Layout shells
   ============================================================ */

.shell {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--parchment-line);
  background: var(--paper-raised);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  color: var(--ink);
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--terracotta);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  flex-shrink: 0;
}

.topbar-actions { display: flex; align-items: center; gap: var(--space-3); }

.main-content {
  flex: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--space-6);
}

@media (max-width: 720px) {
  .main-content { padding: var(--space-4); }
  .topbar { padding: var(--space-3) var(--space-4); }
}

/* ============================================================
   Buttons
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: #1f2b21; }

.btn-accent { background: var(--terracotta); color: white; }
.btn-accent:hover { background: var(--terracotta-deep); }

.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--parchment-line); }
.btn-ghost:hover { background: var(--parchment); }

.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-danger:hover { background: #f1d6c9; }

.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-icon {
  width: 36px; height: 36px; padding: 0; border-radius: 50%;
  background: transparent; border: 1px solid var(--parchment-line); color: var(--ink-soft);
}
.btn-icon:hover { background: var(--parchment); }

/* ============================================================
   Cards & surfaces
   ============================================================ */

.card {
  background: var(--paper-raised);
  border: 1px solid var(--parchment-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
}

.card-flat {
  background: var(--paper-raised);
  border: 1px solid var(--parchment-line);
  border-radius: var(--radius-md);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
}
.tag-sage { background: rgba(122, 139, 111, 0.16); color: var(--sage-deep); }
.tag-terracotta { background: rgba(199, 107, 63, 0.14); color: var(--terracotta-deep); }
.tag-muted { background: var(--parchment); color: var(--ink-soft); }

/* ============================================================
   Forms
   ============================================================ */

.field { margin-bottom: var(--space-4); }
.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: var(--space-2);
}
.field .hint { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

.input, .select, .textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--parchment-line);
  border-radius: var(--radius-sm);
  background: var(--paper-raised);
  color: var(--ink);
  transition: border-color 0.12s ease;
}
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--terracotta);
  outline: none;
}
.textarea { resize: vertical; min-height: 90px; font-family: var(--font-body); line-height: 1.5; }

.form-row { display: flex; gap: var(--space-4); flex-wrap: wrap; }
.form-row > .field { flex: 1; min-width: 200px; }

.error-banner {
  background: var(--danger-bg);
  color: var(--danger);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: var(--space-4);
}

.notice-banner {
  background: rgba(122, 139, 111, 0.14);
  color: var(--sage-deep);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: var(--space-4);
}

/* ============================================================
   The signature element: a review/approval stamp
   ============================================================ */

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 2px solid var(--sage-deep);
  color: var(--sage-deep);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  transform: rotate(-2deg);
  background: rgba(122, 139, 111, 0.06);
}

.stamp-draft {
  border-color: var(--terracotta-deep);
  color: var(--terracotta-deep);
  background: rgba(199, 107, 63, 0.06);
}

/* ============================================================
   Utility
   ============================================================ */

.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-4 { margin-bottom: var(--space-4); }
.text-soft { color: var(--ink-soft); }
.text-sm { font-size: 13px; }
.text-center { text-align: center; }
.mono { font-family: var(--font-mono); }
.w-full { width: 100%; }

.empty-state {
  text-align: center;
  padding: var(--space-8) var(--space-5);
  color: var(--ink-soft);
}
.empty-state h3 { color: var(--ink); margin-bottom: var(--space-2); }

.spinner {
  width: 18px; height: 18px;
  border: 2.5px solid rgba(43,58,46,0.15);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.skeleton {
  background: linear-gradient(90deg, var(--parchment) 25%, #f1ebd8 37%, var(--parchment) 63%);
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }