/* ==========================================================================
   DematRefer.in — Complete Fintech Design System (Light Theme #F7F8FA)
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg-main: #F7F8FA;
  --card-bg: #FFFFFF;
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-muted: #6B7280;
  --primary-accent: #2563EB;
  --primary-accent-hover: #1D4ED8;
  --success-reward: #16A34A;
  --success-reward-hover: #15803D;
  --success-bg-light: #F0FDF4;
  --success-border: #BBF7D0;
  --purple-accent: #8B5CF6;
  --purple-bg-light: #F5F3FF;
  --purple-border: #DDD6FE;
  --border-color: #E5E7EB;
  --border-color-light: #F3F4F6;
  --dark-section: #0F172A;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --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, 0.04);
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container-max: 1120px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

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

h1 {
  font-size: clamp(28px, 4.5vw, 44px);
  letter-spacing: -0.025em;
}

h2 {
  font-size: clamp(22px, 3.5vw, 32px);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(17px, 2.5vw, 20px);
}

p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

a {
  color: var(--primary-accent);
  text-decoration: none;
  transition: all 0.15s ease;
}

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

a:visited {
  color: var(--primary-accent);
}

ul, ol {
  list-style: none;
}

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

button, input, select, textarea {
  font-family: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  outline: none;
}

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo-badge {
  width: 34px;
  height: 34px;
  background: var(--primary-accent);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.site-logo span strong {
  color: var(--primary-accent);
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

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

.nav-account-btn {
  background: #FFFFFF;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color);
  font-weight: 600;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
}

.nav-account-btn:hover {
  background: var(--border-color-light);
  border-color: #CBD5E1;
  color: var(--primary-accent) !important;
}

.hamburger-btn {
  display: none;
  font-size: 24px;
  color: var(--text-primary);
  padding: 4px;
}

/* Mobile Nav Drawer */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 150;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.mobile-nav-overlay.open {
  display: block;
  opacity: 1;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -280px;
  width: 260px;
  height: 100%;
  background: #FFFFFF;
  z-index: 160;
  padding: 24px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: right 0.25s ease;
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.close-drawer-btn {
  font-size: 24px;
  color: var(--text-secondary);
}

/* Main Container */
.page-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 36px 20px 80px;
  width: 100%;
  flex: 1;
}

/* ==========================================================================
   HOMEPAGE — 3 SEPARATE CHOICE TILES
   ========================================================================== */
.hero-centered {
  text-align: center;
  max-width: 680px;
  margin: 10px auto 35px;
}

.hero-pill {
  display: inline-block;
  background: #EEF2FF;
  color: var(--primary-accent);
  border: 1px solid #C7D2FE;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 14px;
}

.hero-centered h1 {
  margin-bottom: 8px;
}

.hero-centered p {
  font-size: 17px;
  color: var(--text-secondary);
}

.three-choice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 24px;
}

.category-tile {
  background: var(--card-bg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px 26px;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all 0.25s ease;
  position: relative;
  text-decoration: none;
}

.category-tile:hover {
  border-color: var(--primary-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.category-tile-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  background: #F0FDF4;
  border: 1px solid var(--success-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 18px;
}

.category-tile.upi-theme .category-tile-icon {
  background: #EFF6FF;
  border-color: #BFDBFE;
}

.category-tile.giftcard-theme .category-tile-icon {
  background: var(--purple-bg-light);
  border-color: var(--purple-border);
}

.category-tile-eyebrow {
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--success-reward);
  margin-bottom: 6px;
  text-transform: uppercase;
  display: block;
}

.category-tile.upi-theme .category-tile-eyebrow {
  color: var(--primary-accent);
}

.category-tile.giftcard-theme .category-tile-eyebrow {
  color: var(--purple-accent);
}

.category-tile h2 {
  font-size: 22px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.category-tile p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 24px;
}

.category-tile-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--primary-accent);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 13.5px;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  margin-top: auto;
  transition: background-color 0.15s ease;
}

.category-tile:hover .category-tile-btn {
  background: var(--primary-accent-hover);
}

.category-tile.upi-theme .category-tile-btn {
  background: #1E40AF;
}

.category-tile.giftcard-theme .category-tile-btn {
  background: #7C3AED;
}

.category-helper-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 10px;
}

/* ==========================================================================
   CATEGORY PAGES & DYNAMIC APP GRIDS
   ========================================================================== */
.view-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.back-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.back-link-btn:hover {
  background: var(--border-color-light);
  border-color: #D1D5DB;
  color: var(--primary-accent);
}

.section-headline {
  margin-bottom: 24px;
}

.section-headline h1 {
  font-size: clamp(26px, 4vw, 36px);
  margin-bottom: 6px;
}

.section-headline p {
  color: var(--text-secondary);
  font-size: 16px;
}

/* Search Box & Filters */
.search-container {
  margin-bottom: 24px;
  max-width: 480px;
}

.search-input {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 15px;
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.search-input:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.pill-filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.pill-filter-btn {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  transition: all 0.15s ease;
}

.pill-filter-btn:hover, .pill-filter-btn.active {
  background: var(--primary-accent);
  border-color: var(--primary-accent);
  color: #FFFFFF;
}

/* 3-Column Responsive Card Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.app-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 22px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.app-card:hover {
  border-color: #CBD5E1;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.app-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.app-logo-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: #F9FAFB;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  color: var(--primary-accent);
  overflow: hidden;
  padding: 4px;
  flex-shrink: 0;
}

.app-logo-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.app-meta h3 {
  font-size: 18px;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.app-badge-pill {
  font-size: 11px;
  font-weight: 700;
  color: var(--success-reward);
  background: var(--success-bg-light);
  border: 1px solid var(--success-border);
  padding: 2px 8px;
  border-radius: 999px;
  display: inline-block;
}

.app-reward-banner {
  background: #F0FDF4;
  border: 1px solid var(--success-border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--success-reward);
  font-size: 15.5px;
  font-weight: 800;
  margin-bottom: 12px;
}

.app-card-desc {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 14px;
  min-height: 40px;
}

.app-benefits-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 18px;
}

.app-benefits-list li {
  font-size: 12.5px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.app-benefits-list li::before {
  content: "✓";
  color: var(--success-reward);
  font-weight: 800;
}

.app-card-actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Primary and Secondary Buttons */
.btn-primary-action {
  background: var(--primary-accent);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 14px;
  padding: 11px 16px;
  border-radius: var(--radius-md);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.btn-primary-action:hover {
  background: var(--primary-accent-hover);
  transform: translateY(-1px);
}

.btn-secondary-action {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  color: var(--text-primary) !important;
  font-weight: 600;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  text-align: center;
  display: block;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-secondary-action:hover {
  background: var(--border-color-light);
  border-color: #D1D5DB;
  color: var(--primary-accent) !important;
}

/* ==========================================================================
   GIFT CARD MARKETPLACE & FORMS (Buy & Sell)
   ========================================================================== */
.giftcard-choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 30px;
}

.form-card-container {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-label .req {
  color: #DC2626;
  margin-left: 2px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  font-size: 14.5px;
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.form-input.is-invalid, .form-select.is-invalid {
  border-color: #DC2626;
  background-color: #FEF2F2;
}

.form-error-feedback {
  color: #DC2626;
  font-size: 12px;
  margin-top: 4px;
  display: none;
}

.form-error-feedback.show {
  display: block;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  margin-top: 3px;
  width: 16px;
  height: 16px;
  accent-color: var(--primary-accent);
}

/* Modal Checkout */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px 24px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.modal-close-btn {
  font-size: 24px;
  color: var(--text-muted);
}

/* Status Cards */
.status-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  text-align: center;
  max-width: 580px;
  margin: 0 auto;
  box-shadow: var(--shadow-sm);
}

.status-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 14px;
}

.status-badge.pending {
  background: #FEF3C7;
  color: #92400E;
  border: 1px solid #FDE68A;
}

.status-badge.success {
  background: #DCFCE7;
  color: #166534;
  border: 1px solid #BBF7D0;
}

/* ==========================================================================
   OFFER DETAIL PAGES (e.g., Kotak Neo, Axis Direct, 5paisa, m.Stock)
   ========================================================================== */
.offer-detail-container {
  max-width: 760px;
  margin: 0 auto;
}

.offer-hero-card {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 30px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  margin-bottom: 26px;
}

.offer-hero-logo {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  background: #F9FAFB;
  border: 1px solid var(--border-color);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
}

.offer-hero-logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.offer-hero-card h1 {
  font-size: 28px;
  margin-bottom: 8px;
}

.offer-hero-card .subtitle {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 20px;
}

.offer-reward-box {
  background: #F0FDF4;
  border: 1px solid var(--success-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  max-width: 440px;
  margin: 0 auto 24px;
}

.offer-reward-box .amount {
  font-size: 32px;
  font-weight: 800;
  color: var(--success-reward);
  display: block;
}

.offer-reward-box .note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.detail-section-block {
  background: #FFFFFF;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.detail-section-block h2 {
  font-size: 20px;
  margin-bottom: 14px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.benefit-bullet-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.benefit-bullet-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-secondary);
}

.benefit-bullet-list li span.check {
  color: var(--success-reward);
  font-weight: 800;
  font-size: 16px;
}

.step-num-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-num-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text-secondary);
}

.step-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #EFF6FF;
  color: var(--primary-accent);
  font-weight: 800;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.disclaimer-box {
  background: #FEF3C7;
  border: 1px solid #FDE68A;
  border-radius: var(--radius-md);
  padding: 16px 18px;
  color: #92400E;
  font-size: 13px;
  line-height: 1.6;
  margin-top: 24px;
}

/* ==========================================================================
   FOOTER & LEGAL
   ========================================================================== */
.site-footer {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  padding: 40px 20px 30px;
  margin-top: auto;
}

.footer-content {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
  align-items: center;
  text-align: center;
}

.footer-logo {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-logo span strong {
  color: var(--primary-accent);
}

.footer-nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
}

.footer-nav a:hover {
  color: var(--primary-accent);
}

.footer-disclaimer-text {
  color: var(--text-muted);
  font-size: 12.5px;
  max-width: 720px;
  line-height: 1.6;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 960px) {
  .three-choice-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .page-container {
    padding: 24px 16px 60px;
  }
  .desktop-nav {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
  .giftcard-choice-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .category-tile {
    padding: 26px 20px;
  }
  .cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}