/* ============================================
   BiliTiles — Premium Mosaic Studio CSS
   Design: Dark luxury + gold accents
   ============================================ */

:root {
  --bg: #0a0a0a;
  --bg2: #111111;
  --bg3: #1a1a1a;
  --bg4: #222222;
  --text: #e8e0d0;
  --text-dim: #8a8070;
  --gold: #c9a84c;
  --gold-light: #e0c06a;
  --gold-dark: #a08830;
  --white: #ffffff;
  --border: #2a2a2a;
  --radius: 8px;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: 'Cormorant Garamond', 'Playfair Display', serif;
  font-weight: 400;
  line-height: 1.2;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: all var(--transition);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 24px;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 2px;
}
.logo-sub {
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
}
.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}
.nav-links a {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--gold); }
.nav-cta {
  background: var(--gold);
  color: var(--bg) !important;
  padding: 8px 20px;
  border-radius: 4px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--gold-light); color: var(--bg) !important; }
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 28px;
  cursor: pointer;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, #1a1208 0%, #0a0a0a 50%, #080818 100%);
  z-index: 0;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(201,168,76,0.08) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(201,168,76,0.04) 0%, transparent 50%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(201,168,76,0.015) 2px,
    rgba(201,168,76,0.015) 4px
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 32px 80px;
  width: 100%;
}
.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.2s forwards;
}
.hero-title {
  font-size: clamp(42px, 6vw, 80px);
  color: var(--white);
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.4s forwards;
}
.hero-title em {
  font-style: italic;
  color: var(--gold);
}
.hero-title .gold { color: var(--gold); font-style: normal; }
.hero-desc {
  font-size: 17px;
  color: var(--text-dim);
  max-width: 560px;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.6s forwards;
}
.hero-actions {
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 60px;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s ease 0.8s forwards;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gold);
  color: var(--bg);
  padding: 16px 32px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,168,76,0.3);
}
.btn-primary .btn-icon { font-size: 16px; }
.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 16px 28px;
  border: 1px solid rgba(201,168,76,0.3);
  color: var(--text);
  border-radius: 4px;
  font-size: 14px;
  transition: all var(--transition);
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-large { padding: 20px 40px; font-size: 15px; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 4px;
  font-size: 14px;
  transition: all var(--transition);
}
.btn-outline:hover {
  background: rgba(201,168,76,0.1);
}

.hero-stats {
  display: flex;
  gap: 0;
  align-items: center;
  opacity: 0;
  animation: fadeUp 0.8s ease 1s forwards;
}
.stat {
  display: flex;
  flex-direction: column;
  padding: 0 32px;
}
.stat:first-child { padding-left: 0; }
.stat strong {
  font-family: 'Cormorant Garamond', serif;
  font-size: 28px;
  color: var(--gold);
  font-weight: 400;
}
.stat span {
  font-size: 11px;
  color: var(--text-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-top: 2px;
}
.stat-div {
  width: 1px;
  height: 40px;
  background: var(--border);
}
.scroll-hint {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  z-index: 1;
}
.scroll-arrow {
  font-size: 18px;
  animation: bounce 2s infinite;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* Sections */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(32px, 4vw, 52px);
  color: var(--white);
  margin-bottom: 16px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto;
}

/* Value Props */
.vp-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.vp-card {
  background: var(--bg2);
  padding: 40px 32px;
  transition: all var(--transition);
}
.vp-card:hover { background: var(--bg3); }
.vp-icon {
  font-size: 28px;
  margin-bottom: 20px;
}
.vp-card h3 {
  font-size: 18px;
  color: var(--white);
  margin-bottom: 12px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  letter-spacing: 0;
}
.vp-card p {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* Cases */
.cases { background: var(--bg2); }
.filter-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(201,168,76,0.08);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg3);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.case-card:hover { transform: translateY(-4px); border-color: rgba(201,168,76,0.3); }
.case-img {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg4);
}
.case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-img img[src*="placeholder"] { opacity: 1; }
.case-card:hover .case-img img { transform: scale(1.05); }
.case-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,10,10,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
  padding: 24px;
}
.case-card:hover .case-overlay { opacity: 1; }
.case-overlay-content { text-align: center; }
.case-tag {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(201,168,76,0.15);
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 12px;
}
.case-overlay-content h4 {
  font-size: 18px;
  color: var(--white);
  margin-bottom: 8px;
}
.case-overlay-content p {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 4px;
}
.case-location { color: var(--text-dim); }
.case-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
}
.case-info { padding: 20px; }
.case-cat {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
}
.case-info h4 {
  font-size: 16px;
  color: var(--white);
  margin: 6px 0 4px;
  font-family: 'Inter', sans-serif;
}
.case-meta { font-size: 12px; color: var(--text-dim); }

/* Materials */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.mat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  position: relative;
}
.mat-card:hover { border-color: rgba(201,168,76,0.3); transform: translateY(-4px); }
.mat-card--featured {
  grid-column: span 2;
  background: linear-gradient(135deg, #1a1508, var(--bg2));
  border-color: rgba(201,168,76,0.3);
}
.mat-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--gold);
  color: var(--bg);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 12px;
  z-index: 1;
}
.mat-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg3);
}
.mat-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.mat-img img[src*="placeholder"] { opacity: 1; }
.mat-body { padding: 28px; }
.mat-body h3 {
  font-size: 22px;
  color: var(--white);
  margin-bottom: 10px;
  font-family: 'Cormorant Garamond', serif;
}
.mat-sub { font-size: 14px; color: var(--text-dim); line-height: 1.7; margin-bottom: 16px; }
.mat-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.mat-specs span {
  font-size: 11px;
  color: var(--gold);
  background: rgba(201,168,76,0.1);
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid rgba(201,168,76,0.2);
}

/* Process */
.process { background: var(--bg2); }
.process-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  position: relative;
  margin-bottom: 60px;
}
.process-timeline::before {
  content: '';
  position: absolute;
  top: 36px;
  left: 5%;
  right: 5%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), var(--gold), transparent);
}
.process-step {
  text-align: center;
  padding: 0 16px;
}
.step-num {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-family: 'Cormorant Garamond', serif;
  font-size: 22px;
  color: var(--gold);
  position: relative;
  z-index: 1;
}
.step-content h3 { font-size: 15px; color: var(--white); margin-bottom: 8px; font-family: 'Inter', sans-serif; font-weight: 600; }
.step-content p { font-size: 12px; color: var(--text-dim); line-height: 1.6; }
.process-cta { text-align: center; }
.cta-note { font-size: 13px; color: var(--text-dim); margin-top: 16px; }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about-media { position: relative; }
.about-img-main {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg3);
  border: 1px solid var(--border);
}
.about-img-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.about-img-main img[src*="placeholder"] { opacity: 1; }
.about-img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}
.about-img-grid img {
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg3);
  border: 1px solid var(--border);
  object-fit: cover;
}
.about-img-grid img[src*="placeholder"] { opacity: 1; }
.about-badge {
  position: absolute;
  bottom: -20px;
  right: 40px;
  background: var(--gold);
  color: var(--bg);
  padding: 16px 24px;
  border-radius: var(--radius);
  text-align: center;
  z-index: 2;
}
.badge-num {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
}
.badge-text { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; font-weight: 600; }
.about-text h2 {
  font-size: 42px;
  color: var(--white);
  margin-bottom: 24px;
}
.about-text h2 em { color: var(--gold); font-style: italic; }
.about-text p { font-size: 15px; color: var(--text-dim); margin-bottom: 16px; line-height: 1.8; }
.about-numbers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 32px 0;
  padding: 24px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.an-item strong {
  display: block;
  font-family: 'Cormorant Garamond', serif;
  font-size: 28px;
  color: var(--gold);
}
.an-item span { font-size: 12px; color: var(--text-dim); }

/* Testimonials */
.testimonials { background: var(--bg2); }
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.test-stars { color: var(--gold); font-size: 16px; margin-bottom: 16px; }
.test-quote {
  font-size: 14px;
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}
.test-author strong { display: block; color: var(--white); font-size: 14px; }
.test-author span { font-size: 12px; color: var(--text-dim); }

/* Direct Payment */
.direct-pay { background: var(--bg); }
.dp-box {
  background: linear-gradient(135deg, #1a1508, var(--bg2));
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: 16px;
  padding: 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.dp-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(201,168,76,0.05) 0%, transparent 70%);
}
.dp-icon { font-size: 48px; margin-bottom: 20px; position: relative; }
.dp-box h2 { font-size: 36px; color: var(--white); margin-bottom: 16px; position: relative; }
.dp-box h2 em { color: var(--gold); font-style: italic; }
.dp-box > p { font-size: 16px; color: var(--text-dim); max-width: 560px; margin: 0 auto 32px; position: relative; }
.dp-benefits {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  position: relative;
}
.dp-benefit {
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}
.dp-benefit span { color: var(--gold); }

/* Footer */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 80px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}
.footer-brand h3 {
  font-family: 'Cormorant Garamond', serif;
  font-size: 28px;
  color: var(--gold);
  margin-bottom: 8px;
}
.footer-brand p { font-size: 13px; color: var(--text-dim); margin-bottom: 16px; }
.footer-social { display: flex; gap: 16px; }
.footer-social a {
  font-size: 12px;
  color: var(--text-dim);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 4px;
  transition: all var(--transition);
}
.footer-social a:hover { border-color: var(--gold); color: var(--gold); }
.footer-col h4 {
  font-size: 13px;
  color: var(--white);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
  font-family: 'Inter', sans-serif;
  font-weight: 600;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 13px;
  color: var(--text-dim);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--gold); }
.contact-list li a { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p { font-size: 12px; color: var(--text-dim); }
.footer-pays { display: flex; align-items: center; gap: 8px; }
.footer-pays > span { font-size: 11px; color: var(--text-dim); }
.pay-badge {
  font-size: 10px;
  background: var(--bg3);
  border: 1px solid var(--border);
  padding: 3px 8px;
  border-radius: 3px;
  color: var(--text-dim);
}

/* WhatsApp Float */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 999;
  width: 56px;
  height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: all var(--transition);
}
.whatsapp-float:hover { transform: scale(1.1); box-shadow: 0 6px 30px rgba(37,211,102,0.5); }
.wf-tooltip {
  position: absolute;
  left: 68px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12px;
  padding: 8px 14px;
  border-radius: 6px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.whatsapp-float:hover .wf-tooltip { opacity: 1; }

/* AI Float */
.ai-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
}
.ai-float-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--gold);
  color: var(--bg);
  padding: 14px 24px;
  border-radius: 40px;
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 4px 24px rgba(201,168,76,0.4);
  transition: all var(--transition);
  animation: pulse 3s infinite;
}
.ai-float-btn:hover {
  background: var(--gold-light);
  transform: scale(1.05);
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 24px rgba(201,168,76,0.4); }
  50% { box-shadow: 0 4px 40px rgba(201,168,76,0.7); }
}

/* Mobile */
@media (max-width: 1024px) {
  .vp-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .mat-card--featured { grid-column: span 2; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .footer-top { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .vp-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .materials-grid { grid-template-columns: 1fr; }
  .mat-card--featured { grid-column: span 1; }
  .process-timeline { grid-template-columns: 1fr; gap: 32px; }
  .process-timeline::before { display: none; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .stat-div { display: none; }
  .stat { padding: 0; }
  .dp-box { padding: 32px 24px; }
  
  /* Mobile Float Buttons - Left/Right separation */
  .whatsapp-float {
    bottom: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    font-size: 24px;
  }
  .ai-float {
    bottom: 20px;
    right: 20px;
  }
  .ai-float-btn {
    font-size: 11px;
    padding: 10px 16px;
  }
}