/* ==========================================================================
   비바알비노 (Viva Albino) Full Responsive Modern Stylesheet
   ========================================================================== */

/* 1. CSS Custom Properties */
:root {
  --primary-color: #8b5cf6;
  --primary-hover: #7c3aed;
  --primary-light: #f5f3ff;
  --accent-color: #ec4899;
  --accent-hover: #db2777;
  --bg-color: #0b0f19;
  --bg-card: #151c2c;
  --bg-card-hover: #1e293b;
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: #26334d;
  --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --container-max-width: 1240px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 20px 40px -15px rgba(0, 0, 0, 0.4);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. Global Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* 3. Utility Components */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.sub-title {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary-color);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-header {
  margin-bottom: 3.5rem;
}

.section-header h2 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto;
}

/* 4. Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(11, 15, 25, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1.25rem 0;
  transition: var(--transition);
}

.navbar.scrolled {
  padding: 0.85rem 0;
  background-color: rgba(11, 15, 25, 0.92);
  border-bottom-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-color);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.btn-primary-sm {
  background-color: var(--primary-color);
  color: #fff !important;
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
  font-weight: 600;
}

.btn-primary-sm:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
}

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

/* 5. Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.95rem 1.8rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn-main {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: #fff;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.35);
}

.btn-main:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

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

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

.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
  border-radius: 6px;
}

.btn-full {
  width: 100%;
}

/* 6. Hero Section */
.hero-section {
  padding: 10rem 0 6rem;
  position: relative;
  overflow: hidden;
}

.hero-bg-shapes .shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  z-index: -1;
}

.shape-1 {
  width: 450px;
  height: 450px;
  background: var(--primary-color);
  top: -100px;
  right: -50px;
}

.shape-2 {
  width: 350px;
  height: 350px;
  background: var(--accent-color);
  bottom: -50px;
  left: -50px;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(139, 92, 246, 0.12);
  color: #c4b5fd;
  border: 1px solid rgba(139, 92, 246, 0.25);
  padding: 0.45rem 1.1rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.highlight {
  background: linear-gradient(135deg, #c4b5fd, var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-color);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stat-divider {
  width: 1px;
  height: 35px;
  background-color: var(--border-color);
}

/* Hero Visual Box */
.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-card-glass {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(145deg, rgba(21, 28, 44, 0.9), rgba(30, 41, 59, 0.8));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
  position: relative;
  backdrop-filter: blur(12px);
}

.card-tag {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--accent-color);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
}

.hero-art-icon {
  width: 80px;
  height: 80px;
  margin: 1.5rem auto 1.5rem;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(236, 72, 153, 0.2));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: #c4b5fd;
  border: 1px solid rgba(139, 92, 246, 0.3);
}

.hero-card-glass h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.hero-card-glass p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.price-tag {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

/* 7. Grid & Cards */
.grid {
  display: grid;
  gap: 2rem;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
}

/* 8. Story Section */
.about-section {
  padding: 6rem 0;
  background-color: rgba(15, 22, 36, 0.5);
}

.story-card .icon-box {
  width: 58px;
  height: 58px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--primary-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
}

.story-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.85rem;
}

.story-card p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* 9. Collections & Products Section */
.collections-section {
  padding: 6rem 0;
}

.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.65rem 1.4rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn:hover,
.tab-btn.active {
  background-color: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}

.product-card {
  position: relative;
  display: flex;
  flex-direction: column;
}

.product-badge {
  position: absolute;
  top: 1.25rem;
  left: 1.25rem;
  background: var(--primary-color);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
}

.product-badge.accent {
  background: var(--accent-color);
}

.product-image {
  height: 180px;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.8), rgba(15, 23, 42, 0.9));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.product-card:hover .product-image {
  transform: scale(1.03);
  color: #c4b5fd;
}

.product-info .category {
  font-size: 0.8rem;
  color: var(--primary-color);
  font-weight: 700;
  text-transform: uppercase;
}

.product-info h3 {
  font-size: 1.25rem;
  margin: 0.35rem 0 0.5rem;
}

.product-info p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 1rem;
}

.product-footer .price {
  font-size: 1.2rem;
  font-weight: 700;
}

/* 10. Gallery Section */
.gallery-section {
  padding: 6rem 0;
  background-color: rgba(15, 22, 36, 0.5);
}

.gallery-item {
  cursor: pointer;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.gallery-box {
  height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  font-weight: 600;
  font-size: 1.1rem;
}

.bg-grad-1 { background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%); }
.bg-grad-2 { background: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%); }
.bg-grad-3 { background: linear-gradient(135deg, #f59e0b 0%, #ec4899 100%); }
.bg-grad-4 { background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%); }

.gallery-box i {
  font-size: 2.5rem;
}

.gallery-item:hover .gallery-box {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

/* 11. Reviews Section */
.reviews-section {
  padding: 6rem 0;
}

.stars {
  color: #fbbf24;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.review-text {
  font-size: 1.05rem;
  color: var(--text-color);
  font-style: italic;
  margin-bottom: 1.75rem;
}

.reviewer {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.reviewer .avatar {
  width: 44px;
  height: 44px;
  background: var(--primary-color);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.reviewer-info strong {
  display: block;
  font-size: 0.95rem;
}

.reviewer-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 12. FAQ Section */
.faq-section {
  padding: 6rem 0;
  background-color: rgba(15, 22, 36, 0.5);
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.faq-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  color: var(--text-color);
  font-size: 1.1rem;
  font-weight: 600;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-header .icon {
  transition: var(--transition);
}

.faq-item.active .faq-header .icon {
  transform: rotate(180deg);
  color: var(--primary-color);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  padding: 0 1.5rem;
}

.faq-item.active .faq-body {
  max-height: 200px;
  padding: 0 1.5rem 1.25rem;
}

.faq-body p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* 13. Contact Section */
.contact-section {
  padding: 6rem 0;
}

.contact-card {
  max-width: 760px;
  margin: 0 auto;
}

.contact-header {
  margin-bottom: 2.5rem;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-color);
  font-size: 0.98rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

/* 14. Footer */
.footer {
  border-top: 1px solid var(--border-color);
  background-color: rgba(11, 15, 25, 0.95);
  padding: 4rem 0 2rem;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.footer-brand p {
  color: var(--text-muted);
  margin-top: 0.75rem;
}

.footer-links {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.link-group h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--text-color);
}

.link-group a {
  display: block;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
  transition: var(--transition);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.hostinger-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #4ade80;
  font-size: 0.85rem;
  background: rgba(34, 197, 94, 0.1);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

/* 15. Modals & Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  padding: 1.5rem;
}

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

.modal-content {
  width: 100%;
  max-width: 480px;
  position: relative;
  transform: translateY(20px);
  transition: var(--transition);
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.8rem;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-color);
}

.modal-icon-box {
  width: 70px;
  height: 70px;
  background: rgba(139, 92, 246, 0.15);
  color: var(--primary-color);
  font-size: 2.2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
}

.modal-body {
  text-align: center;
}

.modal-body h3 {
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
}

.modal-price {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.modal-body p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* Lightbox Modal */
.lightbox-content {
  max-width: 600px;
  text-align: center;
  position: relative;
}

.lightbox-visual {
  height: 300px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  color: #fff;
  margin-bottom: 1rem;
}

.lightbox-caption {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #10b981;
  color: #fff;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-description {
    margin: 0 auto 2.5rem;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-card);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}