/* ==========================================================================
   LUMIÈRE NAIL ATELIER — DESIGN SYSTEM & STYLESHEET
   Clean White, Bright Pink & Purple Cozy Atelier Aesthetic
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-cozy: #FAF8F5;
  --bg-subtle: #F5EFEC;
  --card-bg: #FFFFFF;
  --card-border: rgba(255, 42, 133, 0.12);
  --card-border-hover: rgba(255, 42, 133, 0.4);
  
  --pink-bright: #FF2A85;
  --pink-glow: rgba(255, 42, 133, 0.2);
  --purple-electric: #9B51E0;
  --purple-soft: #F3E8FF;
  
  --text-dark: #1E1B24;
  --text-muted: #6B6375;
  --text-dim: #9C93A6;
  
  /* Gradients */
  --gradient-vibrant: linear-gradient(135deg, #FF2A85 0%, #9B51E0 100%);
  --gradient-soft: linear-gradient(135deg, #FFF0F6 0%, #F5E6FF 100%);
  --gradient-gold-pink: linear-gradient(135deg, #FF2A85 0%, #E6C280 100%);
  
  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Shadows & Effects */
  --shadow-card: 0 15px 35px -10px rgba(155, 81, 224, 0.08);
  --shadow-pink: 0 10px 30px -5px rgba(255, 42, 133, 0.3);
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-cozy);
  color: var(--text-dark);
  font-family: var(--font-sans);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  /* Warm cozy background ambient lighting inspired by luxury beauty studios */
  background-image: 
    radial-gradient(circle at 12% 18%, rgba(255, 42, 133, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 88% 75%, rgba(155, 81, 224, 0.08) 0%, transparent 50%),
    linear-gradient(rgba(255, 42, 133, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 42, 133, 0.02) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 36px 36px, 36px 36px;
  background-attachment: fixed;
}

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

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

ul {
  list-style: none;
}

/* --- TYPOGRAPHY & BUTTONS --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-dark);
}

.gradient-gold {
  background: var(--gradient-vibrant);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--pink-bright);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin-bottom: 3rem;
  font-weight: 400;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: 99px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-gold {
  background: var(--gradient-vibrant);
  color: #FFFFFF;
  box-shadow: var(--shadow-pink);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(255, 42, 133, 0.45);
  opacity: 0.95;
}

.btn-outline {
  background: #FFFFFF;
  color: var(--text-dark);
  border: 1px solid var(--card-border);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.btn-outline:hover {
  background: var(--purple-soft);
  border-color: var(--purple-electric);
  color: var(--purple-electric);
  transform: translateY(-2px);
}

/* --- STICKY NAVIGATION --- */
nav.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 42, 133, 0.1);
  padding: 1.1rem 0;
  transition: var(--transition);
}

.nav-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-dark);
}

.brand-logo span {
  color: var(--pink-bright);
  font-weight: 400;
  font-style: italic;
}

.nav-links {
  display: flex;
  gap: 2.25rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 0.25rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-vibrant);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-dark);
  cursor: pointer;
  padding: 0.25rem;
}

/* --- HERO SECTION --- */
.hero-section {
  padding: 9.5rem 0 5rem;
  position: relative;
  overflow: hidden;
}

.hero-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--purple-soft);
  border: 1px solid rgba(155, 81, 224, 0.2);
  padding: 0.4rem 0.9rem;
  border-radius: 99px;
  color: var(--purple-electric);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 540px;
  font-weight: 400;
}

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

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 42, 133, 0.12);
}

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

.stat-num {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  background: var(--gradient-vibrant);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.25rem;
}

.stat-divider {
  width: 1px;
  height: 2.5rem;
  background: rgba(255, 42, 133, 0.12);
}

.hero-image-wrapper {
  position: relative;
}

.hero-image-border {
  position: absolute;
  top: -1.25rem;
  right: -1.25rem;
  width: 100%;
  height: 100%;
  border: 2px solid var(--pink-bright);
  border-radius: 20px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

.hero-image-card {
  position: relative;
  z-index: 1;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 40px -10px rgba(255, 42, 133, 0.2);
  border: 1px solid var(--card-border);
  aspect-ratio: 4/5;
  background: var(--card-bg);
}

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

.hero-image-card:hover .hero-image {
  transform: scale(1.03);
}

/* --- BENTO GRID SECTION --- */
.section-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.bento-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
}

.bento-card:hover {
  border-color: var(--card-border-hover);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px -10px rgba(155, 81, 224, 0.18);
}

.bento-card.span-2-cols {
  grid-column: span 2;
}

.card-icon {
  width: 46px;
  height: 46px;
  background: var(--purple-soft);
  border: 1px solid rgba(155, 81, 224, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--pink-bright);
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.card-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 400;
  line-height: 1.6;
}

/* --- SERVICE CUSTOMIZER / CALCULATOR --- */
.calculator-box {
  background: var(--bg-cozy);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.75rem;
  margin-top: 1.5rem;
}

.calc-slider-group {
  margin-bottom: 1.5rem;
}

.calc-slider-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.calc-slider {
  width: 100%;
  accent-color: var(--pink-bright);
  cursor: pointer;
}

.calc-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.calc-stat-badge {
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 0.85rem;
}

.calc-stat-badge label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  display: block;
}

.calc-stat-badge span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--pink-bright);
}

/* --- GALLERY LOOKBOOK FILTERS --- */
.filter-tabs {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.filter-tab {
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  padding: 0.6rem 1.4rem;
  border-radius: 99px;
  font-size: 0.85rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.filter-tab.active,
.filter-tab:hover {
  background: var(--gradient-vibrant);
  color: #FFFFFF;
  border-color: transparent;
  font-weight: 600;
  box-shadow: var(--shadow-pink);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.gallery-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--card-border);
  aspect-ratio: 4/5;
  background: var(--card-bg);
  box-shadow: var(--shadow-card);
}

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

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

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(30, 27, 36, 0.92), transparent);
  color: #FFFFFF;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition);
}

.gallery-card:hover .gallery-overlay {
  opacity: 1;
  transform: translateY(0);
}

/* --- MODAL DIALOG --- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(30, 27, 36, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: #FFFFFF;
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.5rem;
  width: 100%;
  max-width: 520px;
  position: relative;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 25px 50px -12px rgba(155, 81, 224, 0.25);
}

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

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
}

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

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.form-control {
  width: 100%;
  background: var(--bg-cozy);
  border: 1px solid rgba(255, 42, 133, 0.15);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  color: var(--text-dark);
  font-family: inherit;
  font-size: 0.9rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--pink-bright);
}

/* --- FOOTER --- */
footer.footer {
  background: #FFFFFF;
  border-top: 1px solid rgba(255, 42, 133, 0.12);
  padding: 5rem 0 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col-title {
  font-size: 1.1rem;
  color: var(--pink-bright);
  margin-bottom: 1.25rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--pink-bright);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 42, 133, 0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* --- RESPONSIVE BREAKPOINTS --- */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions, .hero-stats {
    justify-content: center;
  }
  .hero-image-wrapper {
    max-width: 440px;
    margin: 0 auto;
  }
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-card.span-2-cols {
    grid-column: span 2;
  }
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  .nav-links {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid rgba(255, 42, 133, 0.12);
    padding: 2rem;
    backdrop-filter: blur(16px);
    align-items: center;
  }
  .nav-links.active {
    display: flex;
  }
  .nav-actions .btn {
    display: none;
  }
  .hero-stats {
    flex-wrap: wrap;
    gap: 1.5rem;
  }
  .stat-divider {
    display: none;
  }
  .bento-grid, .gallery-grid {
    grid-template-columns: 1fr;
  }
  .bento-card.span-2-cols {
    grid-column: span 1;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .section-container {
    padding: 4rem 1rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}