/* ==========================================================================
   DESIGN SYSTEM & GLOBAL STYLES - DevForge Digital Marketplace
   ========================================================================== */

:root {
  /* Color Palette - Premium Developer Theme (JH Code Hub) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-card: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #6366f1;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  /* Brand Electric Gradient & Primary */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --primary-glow: rgba(79, 70, 229, 0.25);

  /* Accents */
  --accent: #0284c7;
  --accent-hover: #0369a1;
  --accent-light: #f0f9ff;
  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #06b6d4 100%);

  /* Top Point: Price Accent (Vibrant Emerald Green) */
  --price-color: #059669;
  --price-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%);
  --price-badge-bg: #ecfdf5;
  --price-badge-border: #a7f3d0;

  /* Discounts & Sale Highlights (Vibrant Rose/Coral) */
  --discount-color: #e11d48;
  --discount-bg: #ffe4e6;
  --discount-border: #fecdd3;

  /* Status Colors */
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --info: #0ea5e9;
  --info-bg: #f0f9ff;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 10px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.1), 0 4px 8px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 30px -6px rgba(15, 23, 42, 0.12), 0 10px 14px -6px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 8px 24px -4px rgba(79, 70, 229, 0.35);

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);

  --container-max-width: 1240px;
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-surface: #0f172a;
  --bg-subtle: #090d16;
  --bg-card: #131d33;
  --border-color: #1e293b;
  --border-focus: #818cf8;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --primary: #6366f1;
  --primary-hover: #818cf8;
  --primary-light: rgba(99, 102, 241, 0.18);
  --primary-glow: rgba(99, 102, 241, 0.4);

  --accent: #38bdf8;
  --accent-hover: #7dd3fc;
  --accent-light: rgba(56, 189, 248, 0.15);

  /* Top Point: Price in Dark Mode (Vibrant High-Contrast Mint/Emerald) */
  --price-color: #34d399;
  --price-gradient: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --price-badge-bg: rgba(16, 185, 129, 0.18);
  --price-badge-border: rgba(16, 185, 129, 0.35);

  --discount-color: #fb7185;
  --discount-bg: rgba(244, 63, 94, 0.18);
  --discount-border: rgba(244, 63, 94, 0.35);

  --success-bg: rgba(16, 185, 129, 0.18);
  --warning-bg: rgba(245, 158, 11, 0.18);
  --danger-bg: rgba(239, 68, 68, 0.18);
  --info-bg: rgba(14, 165, 233, 0.18);

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 12px 28px -4px rgba(0, 0, 0, 0.65);
  --shadow-xl: 0 20px 36px -6px rgba(0, 0, 0, 0.8);
  --shadow-glow: 0 8px 28px -4px rgba(99, 102, 241, 0.45);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  max-width: 100vw;
}

main {
  flex: 1;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 3px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

h1 { font-size: 2.25rem; letter-spacing: -0.025em; }
h2 { font-size: 1.75rem; letter-spacing: -0.02em; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.15rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  border: 1px solid transparent;
  box-shadow: 0 4px 12px 0 var(--primary-glow);
}
.btn-primary:hover {
  background: var(--primary-gradient);
  filter: brightness(1.1);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px 0 var(--primary-glow);
}

.btn-secondary {
  background-color: var(--bg-card);
  color: var(--text-primary);
  border-color: var(--border-color);
}
.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-preview {
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid rgba(2, 132, 199, 0.35);
  font-weight: 600;
}
.btn-preview:hover {
  background: var(--accent-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px 0 rgba(2, 132, 199, 0.35);
  transform: translateY(-1px);
}

.btn-success {
  background: var(--price-gradient);
  color: #ffffff;
  border: 1px solid transparent;
  box-shadow: 0 4px 12px 0 rgba(16, 185, 129, 0.3);
}
.btn-success:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 16px 0 rgba(16, 185, 129, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-danger {
  background-color: var(--danger);
  color: #ffffff;
}
.btn-danger:hover {
  background-color: #dc2626;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.85rem 1.75rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Form Controls */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-primary);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-textarea {
  resize: vertical;
  min-height: 110px;
}

.form-help {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  line-height: 1;
  letter-spacing: 0.02em;
  transition: all var(--transition-fast);
}

.badge-primary { background: var(--primary-light); color: var(--primary); border: 1px solid rgba(79, 70, 229, 0.25); }
.badge-success { background: var(--success-bg); color: var(--success); border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-warning { background: var(--warning-bg); color: var(--warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-neutral { background: var(--bg-subtle); color: var(--text-muted); border: 1px solid var(--border-color); }
.badge-accent { background: var(--accent-light); color: var(--accent); border: 1px solid rgba(2, 132, 199, 0.3); }

/* Top Point Color Badges */
.badge-price {
  background: var(--price-badge-bg);
  color: var(--price-color);
  border: 1px solid var(--price-badge-border);
  font-weight: 800;
}
.badge-discount {
  background: var(--discount-bg);
  color: var(--discount-color);
  border: 1px solid var(--discount-border);
  font-weight: 800;
}

/* Card Component */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(99, 102, 241, 0.3);
}

/* Grid System */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* Utility Classes */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.text-center { text-align: center; }
.w-full { width: 100%; }