/* ==========================================================================
   CouponCodeXYZ.in - Design System & Core Styles
   Ultra-lightweight, Performance & Mobile First
   ========================================================================== */

:root {
  /* Brand Color Palette */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --primary-dark: #1e40af;
  
  --secondary: #7c3aed;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --accent-light: #fff7ed;

  --success: #10b981;
  --success-light: #ecfdf5;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #06b6d4;

  /* Neutral Shades */
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-muted: #f1f5f9;
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-inverse: #ffffff;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1200px;
  --header-height: 70px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--text-main);
  background-color: var(--bg-body);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: transparent;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.section {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.section-title-wrap {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 1.75rem;
}

.section-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-subtitle {
  font-size: 0.925rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.view-all-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.view-all-link:hover {
  text-decoration: underline;
  transform: translateX(2px);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1.5rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-logo img, .brand-logo svg {
  height: 38px;
  width: auto;
}

/* Nav Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  padding: 0.5rem 0.25rem;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

.nav-badge {
  background: var(--accent);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  margin-left: 4px;
  text-transform: uppercase;
}

/* Header Action Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-inverse);
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
  background: var(--primary-hover);
  color: var(--text-inverse);
  box-shadow: 0 4px 8px rgba(37, 99, 235, 0.3);
  transform: translateY(-1px);
}

.btn-accent {
  background: var(--accent);
  color: var(--text-inverse);
}

.btn-accent:hover {
  background: var(--accent-hover);
  color: var(--text-inverse);
}

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text-main);
  background: var(--bg-surface);
}

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

.mobile-menu-toggle {
  display: none;
  background: none;
  color: var(--text-main);
  font-size: 1.5rem;
  padding: 0.5rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #7c3aed 100%);
  color: #ffffff;
  padding: 4.5rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
}

.hero-badge, .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  padding: 0.4rem 1.15rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.gradient-text {
  background: linear-gradient(135deg, #fde047 0%, #facc15 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  line-height: 1.6;
}

/* Hero Live Search Box */
.search-wrap, .hero-search-wrap {
  max-width: 640px;
  margin: 0 auto 1.75rem;
  position: relative;
  width: 100%;
}

.search-bar {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border-radius: var(--radius-full);
  padding: 0.55rem 0.6rem 0.55rem 1.25rem;
  box-shadow: 0 12px 30px -5px rgba(0, 0, 0, 0.28);
  border: 2px solid transparent;
  transition: var(--transition);
}

.search-bar:focus-within {
  border-color: #93c5fd;
  box-shadow: 0 16px 36px -5px rgba(0, 0, 0, 0.35);
}

.search-bar svg {
  color: #94a3b8;
  flex-shrink: 0;
  margin-right: 0.75rem;
}

.search-bar input, .search-input {
  flex: 1;
  background: transparent;
  color: var(--text-main);
  font-size: 1.05rem;
  font-weight: 500;
  padding: 0.25rem 0;
}

.search-bar input::placeholder, .search-input::placeholder {
  color: #94a3b8;
}

.search-btn {
  background: var(--accent);
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
}

.search-btn:hover {
  background: var(--accent-hover);
}

/* Trending Keywords */
.trending-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.875rem;
}

.trending-label {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
}

.trend-tag, .trending-chip {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: #ffffff;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: var(--transition);
  text-decoration: none;
}

.trend-tag:hover, .trending-chip:hover {
  background: rgba(255, 255, 255, 0.3);
  color: #ffffff;
  transform: translateY(-1px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: #0b1329;
  color: #94a3b8;
  padding-top: 4rem;
  padding-bottom: 2rem;
  margin-top: auto;
  border-top: 1px solid #1e293b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand img {
  height: 40px;
  width: auto;
  object-fit: contain;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #94a3b8;
}

.footer-title {
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  position: relative;
  display: inline-block;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: var(--radius-full);
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #ffffff;
  transform: translateX(3px);
}

.disclaimer-box {
  background: #131d38;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 2.5rem;
  font-size: 0.8rem;
  line-height: 1.6;
  color: #94a3b8;
}

.disclaimer-box strong {
  color: #f1f5f9;
}

.footer-bottom {
  padding-top: 1.75rem;
  border-top: 1px solid #1e293b;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #64748b;
  gap: 1rem;
}

.disclaimer-box strong {
  color: #f1f5f9;
}