/* ============================================
   BACK IGNITION — Professional Band Website
   Dark metal aesthetic, clean & fast
   ============================================ */

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #161616;
  --bg-elevated: #1a1a1a;
  --accent: #57B5E0;
  --accent-hover: #7ac8ea;
  --accent-glow: rgba(87, 181, 224, 0.3);
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-muted: #666666;
  --border: #222222;
  --border-light: #333333;
  --font-display: 'Oswald', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============ HEADER / NAV ============ */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
  transition: var(--transition);
}

#header.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.5);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo { display: flex; align-items: center; gap: 10px; }
.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
}
.accent { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 8px 16px;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

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

.nav-link.active::after, .nav-link:hover::after {
  width: 60%;
}

.nav-social {
  display: flex;
  gap: 12px;
  align-items: center;
}

.social-icon {
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
}

.social-icon:hover { color: var(--accent); transform: translateY(-2px); }

.nav-cart {
  position: relative;
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
}

.nav-cart:hover { color: var(--text-primary); }

.cart-count {
  position: absolute;
  top: -8px;
  right: -10px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0);
  transition: var(--transition);
}

.cart-count.visible { opacity: 1; transform: scale(1); }

/* Mobile toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

.mobile-toggle.open span:nth-child(1) { transform: rotate(45deg) translateY(7px); }
.mobile-toggle.open span:nth-child(2) { opacity: 0; }
.mobile-toggle.open span:nth-child(3) { transform: rotate(-45deg) translateY(-7px); }

/* ============ HERO ============ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(10,10,10,0.55) 0%, rgba(10,10,10,0.7) 50%, var(--bg-primary) 100%),
    url('/images/hero-bg.jpg') center/cover no-repeat;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 60%, var(--bg-primary) 100%);
}

.hero-content {
  position: relative;
  text-align: center;
  z-index: 2;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 10rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 8px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.hero-line { display: block; }

.hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  font-weight: 300;
  letter-spacing: 8px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.btn {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 14px 36px;
  border-radius: var(--radius);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-2px);
}

.btn-outline {
  border: 2px solid var(--border-light);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* ============ SECTIONS ============ */
.section {
  padding: 120px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ============ ABOUT ============ */
.about-section {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: var(--transition);
}

.about-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.about-icon {
  color: var(--accent);
  margin-bottom: 20px;
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.about-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============ SHOP ============ */
.shop-section {
  background: var(--bg-primary);
}

.shop-filters {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-btn {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 10px 24px;
  border-radius: 50px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  border-color: var(--border-light);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.product-image {
  position: relative;
  aspect-ratio: 1;
  background: var(--bg-elevated);
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.product-image .no-image {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 4px;
}

.product-info {
  padding: 20px;
}

.product-category {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.product-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.product-price {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.product-actions {
  display: flex;
  gap: 8px;
}

.btn-add-cart {
  flex: 1;
  background: var(--accent);
  color: white;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 12px;
  border-radius: var(--radius);
  transition: var(--transition);
}

.btn-add-cart:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-add-cart:disabled {
  background: var(--border);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

.shop-empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}

.shop-empty svg { margin: 0 auto 16px; }

/* ============ CART DRAWER ============ */
.cart-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.cart-overlay.open { opacity: 1; visibility: visible; }

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 400px;
  max-width: 90vw;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  z-index: 2001;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.cart-drawer.open { transform: translateX(0); }

.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  border-bottom: 1px solid var(--border);
}

.cart-header h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.cart-close {
  font-size: 2rem;
  color: var(--text-secondary);
  transition: var(--transition);
  line-height: 1;
}

.cart-close:hover { color: var(--accent); }

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.cart-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.cart-item-image {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  flex-shrink: 0;
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item-info { flex: 1; }

.cart-item-name {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.cart-item-price {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  border: 1px solid var(--border);
}

.qty-btn:hover { border-color: var(--accent); color: var(--accent); }

.qty-value {
  font-weight: 600;
  font-size: 0.9rem;
  min-width: 20px;
  text-align: center;
}

.cart-item-remove {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 6px;
  transition: var(--transition);
}

.cart-item-remove:hover { color: var(--accent); }

.cart-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}

.cart-footer {
  padding: 24px;
  border-top: 1px solid var(--border);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ============ CONTACT ============ */
.contact-section {
  background: var(--bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  transition: var(--transition);
  font-size: 0.95rem;
}

.contact-link:hover { color: var(--accent); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

.form-group select option { background: var(--bg-card); }

.form-group textarea { resize: vertical; min-height: 120px; }

/* ============ FOOTER ============ */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  background: var(--bg-primary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 8px;
}

.footer-social {
  display: flex;
  gap: 16px;
}

/* ============ TOAST ============ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 20px;
  color: var(--text-primary);
  font-size: 0.9rem;
  box-shadow: 0 10px 40px rgba(0,0,0,0.4);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toast.success { border-left: 3px solid #2ed573; }
.toast.error { border-left: 3px solid var(--accent); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .mobile-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-social { display: none; }

  .about-grid { grid-template-columns: 1fr; }

  .contact-grid { grid-template-columns: 1fr; gap: 48px; }

  .hero-title { letter-spacing: 4px; }

  .section { padding: 80px 0; }

  .footer-content { flex-direction: column; gap: 16px; text-align: center; }
}

@media (max-width: 480px) {
  .hero-buttons { flex-direction: column; align-items: center; }
  .btn { padding: 12px 28px; font-size: 0.85rem; }
  .products-grid { grid-template-columns: 1fr; }
}