/* ============================================
   SAPALESS - GREEN · WHITE · BLACK THEME
   Nigerian Auction Marketplace
   ============================================ */

:root {
  --green: #1B5E20;
  --green-light: #4CAF50;
  --green-pale: #E8F5E9;
  --green-dark: #0D3B10;
  --white: #FFFFFF;
  --off-white: #F8FAF8;
  --cream: #F5F7F5;
  --black: #1A1A1A;
  --charcoal: #2D2D2D;
  --gray: #6B7280;
  --gray-light: #E5E7EB;
  --gray-pale: #F3F4F6;
  --danger: #DC2626;
  --warning: #F59E0B;
  --success: #16A34A;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-md: 0 8px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 16px 32px rgba(0,0,0,0.12);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --transition: all 0.25s ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--off-white);
  color: var(--black);
  line-height: 1.6;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--gray-pale); }
::-webkit-scrollbar-thumb { background: var(--green-light); border-radius: 4px; }

/* ============================================
   TOP BAR
   ============================================ */
.top-bar {
  background: var(--green-dark);
  color: var(--white);
  padding: 8px 0;
  font-size: 13px;
}
.top-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar a { color: var(--green-pale); text-decoration: none; }
.top-bar a:hover { color: var(--white); }

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.navbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 26px;
  font-weight: 800;
  color: var(--green);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-brand .logo-mark {
  width: 38px; height: 38px;
  background: var(--green);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 18px;
}

.nav-search {
  flex: 1;
  max-width: 500px;
  position: relative;
}

.nav-search input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: 2px solid var(--gray-light);
  border-radius: var(--radius-lg);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
  background: var(--gray-pale);
}

.nav-search input:focus {
  border-color: var(--green);
  background: var(--white);
}

.nav-search .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray);
  font-size: 16px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--charcoal);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover { color: var(--green); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  text-decoration: none;
}

.btn-green {
  background: var(--green);
  color: var(--white);
}
.btn-green:hover { background: var(--green-dark); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--green);
  border: 2px solid var(--green);
}
.btn-outline:hover { background: var(--green-pale); }

.btn-black {
  background: var(--black);
  color: var(--white);
}
.btn-black:hover { background: var(--charcoal); }

.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ============================================
   HERO
   ============================================ */
.hero {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green) 60%, var(--green-light) 100%);
  color: var(--white);
  padding: 80px 24px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.03);
  border-radius: 50%;
}

.hero-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
}

.hero-btn-white {
  background: var(--white);
  color: var(--green);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.hero-btn-white:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }

.hero-btn-outline {
  background: transparent;
  color: var(--white);
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  border: 2px solid rgba(255,255,255,0.4);
  cursor: pointer;
  transition: var(--transition);
}
.hero-btn-outline:hover { background: rgba(255,255,255,0.1); border-color: var(--white); }

.hero-stats {
  display: flex;
  gap: 48px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.hero-stat h3 {
  font-size: 32px;
  font-weight: 800;
}

.hero-stat p {
  font-size: 14px;
  opacity: 0.7;
  margin: 0;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  width: 360px;
  box-shadow: var(--shadow-lg);
  color: var(--black);
}

.hero-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.hero-card-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gray);
  font-weight: 600;
}

.hero-live {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--danger);
  font-weight: 700;
}

.hero-live::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--danger);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-card-img {
  width: 100%;
  height: 180px;
  background: var(--gray-pale);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 14px;
}

.hero-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-card-name {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 4px;
}

.hero-card-price {
  font-size: 22px;
  font-weight: 800;
  color: var(--green);
  margin-bottom: 12px;
}

.hero-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--gray);
}

/* ============================================
   CATEGORIES BAR
   ============================================ */
.categories-bar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-light);
  padding: 16px 0;
  overflow-x: auto;
}

.categories-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 8px;
}

.category-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--gray-pale);
  border: 1px solid var(--gray-light);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--charcoal);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
}

.category-chip:hover, .category-chip.active {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}

/* ============================================
   AUCTION GRID
   ============================================ */
.section {
  max-width: 1400px;
  margin: 0 auto;
  padding: 48px 24px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--black);
}

.section-title span { color: var(--green); }

.section-link {
  color: var(--green);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.section-link:hover { text-decoration: underline; }

.auction-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.auction-card {
  background: var(--white);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.auction-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--green-light);
}

.card-img {
  position: relative;
  height: 200px;
  background: var(--gray-pale);
  overflow: hidden;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.auction-card:hover .card-img img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-hot { background: var(--danger); color: var(--white); }
.badge-ending { background: var(--warning); color: var(--black); }
.badge-new { background: var(--green); color: var(--white); }
.badge-featured { background: var(--black); color: var(--white); }

.card-timer {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.7);
  color: var(--white);
  padding: 5px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
}

.card-body {
  padding: 16px;
}

.card-category {
  font-size: 11px;
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-bottom: 6px;
}

.card-name {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--black);
}

.card-meta {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--gray);
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 3px;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  border-top: 1px solid var(--gray-light);
}

.card-price-label {
  font-size: 11px;
  color: var(--gray);
  margin-bottom: 2px;
}

.card-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--green);
}

.card-btn {
  padding: 8px 16px;
  background: var(--green);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: var(--transition);
}

.card-btn:hover {
  background: var(--green-dark);
  transform: scale(1.05);
}

/* ============================================
   HOW IT WORKS STRIP
   ============================================ */
.how-strip {
  background: var(--white);
  border-top: 1px solid var(--gray-light);
  border-bottom: 1px solid var(--gray-light);
}

.how-strip-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.how-item {
  text-align: center;
}

.how-icon {
  width: 64px;
  height: 64px;
  background: var(--green-pale);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin: 0 auto 16px;
}

.how-item h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.how-item p {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.5;
}

/* ============================================
   TRUST BADGES
   ============================================ */
.trust-strip {
  background: var(--green-dark);
  color: var(--white);
}

.trust-strip-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.trust-item h4 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 4px;
}

.trust-item p {
  font-size: 14px;
  opacity: 0.8;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--black);
  color: var(--white);
  padding: 60px 24px 24px;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--green-light);
  margin-bottom: 16px;
}

.footer-desc {
  color: var(--gray);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: var(--charcoal);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  font-size: 16px;
  transition: var(--transition);
}

.footer-social a:hover { background: var(--green); }

.footer h5 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
  color: var(--white);
}

.footer ul {
  list-style: none;
}

.footer li {
  margin-bottom: 10px;
}

.footer a {
  color: var(--gray);
  text-decoration: none;
  font-size: 14px;
  transition: var(--transition);
}

.footer a:hover { color: var(--green-light); }

.footer-bottom {
  max-width: 1400px;
  margin: 40px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--charcoal);
  text-align: center;
  color: var(--gray);
  font-size: 13px;
}

/* ============================================
   MODALS
   ============================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 440px;
  transform: scale(0.95);
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.modal-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--black);
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gray-pale);
  border: none;
  color: var(--gray);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--danger);
  color: var(--white);
}

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

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--charcoal);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-light);
  border-radius: var(--radius);
  font-size: 15px;
  outline: none;
  transition: var(--transition);
  background: var(--gray-pale);
}

.form-input:focus {
  border-color: var(--green);
  background: var(--white);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero h1 { font-size: 38px; }
  .hero-stats { justify-content: center; }
  .how-strip-inner { grid-template-columns: repeat(2, 1fr); }
  .trust-strip-inner { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .navbar-inner { flex-wrap: wrap; gap: 12px; }
  .nav-search { order: 3; width: 100%; max-width: none; }
  .nav-links { display: none; }
  .hero { padding: 60px 16px; }
  .hero h1 { font-size: 32px; }
  .section { padding: 32px 16px; }
  .auction-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .how-strip-inner { grid-template-columns: 1fr; }
  .trust-strip-inner { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .auction-grid { grid-template-columns: 1fr; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeInUp 0.5s ease forwards;
}