/* =========================================================
   Restaurant Predictor — Main Stylesheet
   ========================================================= */

:root {
  --color-primary:   #2563eb;
  --color-primary-h: #1d4ed8;
  --color-danger:    #dc2626;
  --color-success:   #16a34a;
  --color-warning:   #d97706;
  --color-gray:      #6b7280;
  --color-bg:        #f8fafc;
  --color-card:      #ffffff;
  --color-border:    #e5e7eb;
  --color-text:      #1f2937;
  --color-muted:     #6b7280;
  --radius:          8px;
  --shadow:          0 1px 4px rgba(0,0,0,.08);
}

/* Reset & base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Navbar */
.navbar {
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  height: 56px;
  gap: 2rem;
  box-shadow: 0 2px 4px rgba(0,0,0,.15);
}
.nav-brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: .03em;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 0.25rem;
  flex: 1;
}
.nav-links a {
  color: rgba(255,255,255,.85);
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  font-size: 0.9rem;
  transition: background 0.15s;
}
.nav-links a:hover {
  background: rgba(255,255,255,.15);
  color: #fff;
  text-decoration: none;
}

/* Page header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.page-header h1 { font-size: 1.75rem; font-weight: 700; }
.subtitle { color: var(--color-muted); margin-top: 0.25rem; }

/* Cards */
.card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}
.card h2 { font-size: 1.1rem; font-weight: 600; margin-bottom: 1rem; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}
.card-action {
  display: block;
  padding: 1.5rem;
  transition: box-shadow 0.15s, transform 0.15s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.card-action:hover { box-shadow: 0 4px 12px rgba(0,0,0,.12); transform: translateY(-2px); text-decoration: none; }
.card-highlight { border-color: var(--color-primary); }
.card-icon { font-size: 2rem; margin-bottom: 0.5rem; }

/* Stat cards */
.stat-card { text-align: center; padding: 1.25rem; }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-label { color: var(--color-muted); font-size: 0.9rem; margin-top: 0.25rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-primary   { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-h); }
.btn-secondary { background: #fff; color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { background: #f3f4f6; }
.btn-danger    { background: var(--color-danger); color: #fff; border: none; }
.btn-danger:hover { background: #b91c1c; }
.btn-lg        { padding: 0.65rem 1.5rem; font-size: 1rem; }
.btn-sm        { padding: 0.25rem 0.6rem; font-size: 0.8rem; }

/* Forms */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}
.form-group { display: flex; flex-direction: column; gap: 0.35rem; }
label { font-size: 0.875rem; font-weight: 500; }
input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.9rem;
  width: 100%;
  background: #fff;
  color: var(--color-text);
  transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.table th, .table td {
  padding: 0.6rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}
.table th { font-weight: 600; background: #f9fafb; }
.table tbody tr:hover { background: #f9fafb; }
.row-inactive td { opacity: 0.5; }
.row-perishable { background: #fef9c3; }
.qty-cell { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); }

/* Badges */
.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-green  { background: #d1fae5; color: #065f46; }
.badge-yellow { background: #fef3c7; color: #92400e; }
.badge-gray   { background: #f3f4f6; color: #4b5563; }
.badge-orange { background: #fed7aa; color: #7c2d12; }

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}
.alert ul { margin: 0.5rem 0 0 1.25rem; }
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-warning { background: #fef3c7; color: #78350f; border: 1px solid #fde68a; }
.alert-error   { background: #fee2e2; color: #7f1d1d; border: 1px solid #fca5a5; }

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}
.drop-zone p { color: var(--color-muted); margin-bottom: 1rem; }
.drag-over { border-color: var(--color-primary); background: #eff6ff; }

/* Code block (used on setup pages) */
.code-block {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-family: 'Menlo', 'Consolas', monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
}
code {
  background: #f3f4f6;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.85em;
  font-family: 'Menlo', 'Consolas', monospace;
}

/* Recipe builder */
.recipe-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
}
.recipe-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
  padding-left: 0.1rem;
}
.check-label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  cursor: pointer;
}

/* Context row in results */
.context-row { display: flex; gap: 1.5rem; flex-wrap: wrap; }

/* Tips list */
.tips-list { list-style: none; }
.tips-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.tips-list li:last-child { border-bottom: none; }
.tips-list li strong { color: var(--color-text); }

/* How-it-works list */
.how-list { padding-left: 1.25rem; }
.how-list li { padding: 0.35rem 0; }

/* Empty state */
.empty-state { text-align: center; padding: 3rem; color: var(--color-muted); }
.empty-state .btn { margin-top: 1rem; }

/* Header actions */
.header-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

/* Utilities */
.mt-1 { margin-top: 0.75rem; }
.mt-2 { margin-top: 1.5rem; }
.text-muted { color: var(--color-muted); }

/* Footer */
.footer {
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
  padding: 2rem;
  border-top: 1px solid var(--color-border);
}

/* =========================================================
   Print styles
   ========================================================= */
@media print {
  .navbar, .footer, .no-print { display: none !important; }
  .print-only { display: block !important; }
  body { background: #fff; font-size: 12pt; }
  .container { max-width: 100%; padding: 0; }
  .card { box-shadow: none; border: 1px solid #ccc; page-break-inside: avoid; }
  .card-grid { grid-template-columns: repeat(4, 1fr); }
  .btn { display: none !important; }
  .stat-value { font-size: 1.4rem; }
}
.print-only { display: none; }

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 680px) {
  .recipe-row, .recipe-header { grid-template-columns: 1fr; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 0.4rem 0.4rem; font-size: 0.8rem; }
}