/* ═══════════════════════════════════════════════════
   ST.JAMES & TREND — Design System
   Apple-inspired minimal, premium UI
   ═══════════════════════════════════════════════════ */

:root {
  --bg: #ffffff;
  --bg-secondary: #f5f5f7;
  --text: #1d1d1f;
  --subtext: #6e6e73;
  --border: #d2d2d7;
  --border-light: #e8e8ed;
  --accent: #1d1d1f;
  --accent-hover: #424245;
  --gold: #b4975a;
  --gold-light: #d4be8a;
  --success: #34c759;
  --success-bg: #f0faf2;
  --error: #ff3b30;
  --error-bg: #fff5f5;
  --warning: #ff9500;
  --warning-bg: #fff9f0;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 20px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Sarabun', sans-serif;
  --font-display: 'Sarabun', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-w: 1120px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 17px;
  line-height: 1.65;
  min-height: 100vh;
}

/* ── TYPOGRAPHY ── */
h1, h2, h3 { font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; color: var(--text); }
h1 { font-size: 40px; }
h2 { font-size: 28px; }
h3 { font-size: 21px; }
p { color: var(--subtext); }

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-light);
  height: 52px;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text);
}
.nav-brand-logo { height: 18px; width: auto; opacity: 0.85; }
.nav-brand-text { font-size: 15px; font-weight: 600; letter-spacing: -0.01em; }
.nav-brand-sub { display: none; }
.nav-links { display: flex; align-items: center; gap: var(--space-xs); }
.nav-link {
  color: var(--subtext);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}
.nav-link:hover { color: var(--text); background: var(--bg-secondary); }
.nav-link.active { color: var(--text); background: var(--bg-secondary); }
.nav-user {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 14px;
  color: var(--subtext);
}
.nav-user-badge {
  font-size: 12px;
  color: var(--gold);
  background: rgba(180,151,90,0.08);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
}
.btn-logout {
  background: none;
  border: none;
  color: var(--subtext);
  font-size: 13px;
  cursor: pointer;
  font-family: var(--font);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  transition: all var(--transition);
}
.btn-logout:hover { color: var(--error); background: var(--error-bg); }

/* ── MAIN ── */
.main {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg) var(--space-3xl);
}

/* ── SECTION HEADER ── */
.page-header { margin-bottom: var(--space-xl); }
.page-title { font-size: 32px; font-weight: 700; margin-bottom: 4px; }
.page-subtitle { font-size: 17px; color: var(--subtext); font-weight: 400; }

/* ── CARD ── */
.card {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}
.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-light);
}

/* ── FORM ── */
.form-group { margin-bottom: var(--space-lg); }
.form-label {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--space-sm);
}
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 16px;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0,0,0,0.05);
}
.form-input::placeholder { color: #aaa; }
.form-hint { font-size: 14px; color: var(--subtext); margin-top: 6px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.35; cursor: not-allowed; transform: none !important; }

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

.btn-gold {
  background: var(--gold);
  color: white;
}
.btn-gold:hover { background: var(--gold-light); color: var(--text); }

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { background: var(--bg-secondary); border-color: var(--accent); }

.btn-success { background: #30d158; color: white; }
.btn-success:hover { background: #28b84c; }

.btn-danger { background: var(--error); color: white; }
.btn-danger:hover { background: #e0342b; }

.btn-lg { padding: 14px 32px; font-size: 17px; }
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-block { width: 100%; }

/* ── BADGE ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.01em;
}
.badge-success { background: var(--success-bg); color: #1a8d3e; }
.badge-error { background: var(--error-bg); color: var(--error); }
.badge-warning { background: var(--warning-bg); color: #c27400; }
.badge-navy { background: var(--bg-secondary); color: var(--text); }
.badge-gold { background: rgba(180,151,90,0.1); color: var(--gold); }

/* ── TABLE ── */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--subtext);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-light);
}
tbody td {
  padding: 14px 16px;
  font-size: 15px;
  border-bottom: 1px solid var(--border-light);
}
tbody tr { transition: background var(--transition); }
tbody tr:hover { background: var(--bg-secondary); }
tbody tr:last-child td { border-bottom: none; }

/* ── ALERT ── */
.alert {
  padding: 14px 20px;
  font-size: 15px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--space-md);
  font-weight: 500;
}
.alert-success { background: var(--success-bg); color: #1a8d3e; }
.alert-error { background: var(--error-bg); color: var(--error); }
.alert-warning { background: var(--warning-bg); color: #c27400; }

/* ── STATS ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.stat-card {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: var(--space-lg);
  text-align: center;
}
.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.03em;
}
.stat-label {
  font-size: 14px;
  color: var(--subtext);
  margin-top: 6px;
  font-weight: 500;
}
.stat-card.gold .stat-number { color: var(--gold); }
.stat-card.green .stat-number { color: var(--success); }

/* ── GRID ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-lg); }

/* ── SPINNER ── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav { padding: 0 var(--space-md); }
  .main { padding: var(--space-lg) var(--space-md) var(--space-2xl); }
  h1, .page-title { font-size: 28px; }
  h2 { font-size: 24px; }
}

/* ── FADE IN ── */
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.fade-in { animation: fadeIn 0.4s ease both; }

/* ── PRINT ── */
@media print { .no-print { display: none !important; } }