:root {
  --onyx: #0b0c0e;
  --charcoal: #1b1c20;
  --stone: #8c8779;
  --travertine: #e4dcc8;
  --paper: #faf9f6;
  --paper-alt: #f1efe9;
  --ink: #15130f;
  --ink-soft: rgba(21, 19, 15, 0.62);
  --ink-faint: rgba(21, 19, 15, 0.4);
  --line: rgba(21, 19, 15, 0.12);
  --line-dark: rgba(245, 242, 236, 0.14);
  --paper-soft: rgba(250, 249, 246, 0.7);
  --gold: #b3893f;
  --gold-bright: #c9a24b;
  --champagne: #efd9a0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Jost', sans-serif;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

.font-display {
  font-family: 'Playfair Display', serif;
}

.eyebrow {
  font-family: 'Jost', sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--gold);
}

.eyebrow-soft {
  font-family: 'Jost', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-weight: 400;
  color: var(--ink-faint);
}

.h-hero {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 5.4rem);
  line-height: 1.04;
  letter-spacing: -0.01em;
}

.head-1 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
}

.head-2 {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 2.3vw, 2.3rem);
  line-height: 1.15;
}

.body-lg {
  font-size: clamp(1rem, 1.2vw, 1.25rem);
  line-height: 1.65;
  font-weight: 300;
  color: var(--ink-soft);
}

.body-md {
  font-size: 1rem;
  line-height: 1.7;
  font-weight: 300;
  color: var(--ink-soft);
}

.section {
  padding-block: clamp(4.5rem, 9vw, 8.5rem);
}

.container-wide {
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 4rem);
}

.hairline {
  border-color: var(--line);
}

.hairline-dark {
  border-color: var(--line-dark);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.95rem 2.1rem;
  border-radius: 999px;
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-primary {
  background: var(--onyx);
  color: var(--paper);
}
.btn-primary:hover {
  background: var(--ink);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px rgba(11, 12, 14, 0.4);
}

.btn-gold {
  background: linear-gradient(135deg, var(--champagne), var(--gold));
  color: var(--onyx);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px rgba(201, 162, 75, 0.55);
}

.btn-outline {
  border: 1px solid rgba(250, 249, 246, 0.45);
  color: var(--paper);
  background: transparent;
}
.btn-outline:hover {
  background: rgba(250, 249, 246, 0.1);
  border-color: rgba(250, 249, 246, 0.75);
}

.btn-outline-dark {
  border: 1px solid rgba(21, 19, 15, 0.28);
  color: var(--ink);
  background: transparent;
}
.btn-outline-dark:hover {
  border-color: var(--ink);
  background: rgba(21, 19, 15, 0.04);
}

.btn-sm {
  padding: 0.6rem 1.3rem;
  font-size: 0.7rem;
}

/* Header */
#site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  transition: background 0.4s ease, border-color 0.4s ease, backdrop-filter 0.4s ease;
  border-bottom: 1px solid transparent;
}
#site-header.is-scrolled,
#site-header.is-solid {
  background: rgba(250, 249, 246, 0.86);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line);
}
#site-header .nav-link {
  color: inherit;
  opacity: 0.72;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 400;
  transition: opacity 0.25s ease;
  position: relative;
}
#site-header .nav-link:hover {
  opacity: 1;
}
#site-header .nav-link.active {
  opacity: 1;
}
#site-header .nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -6px;
  height: 1px;
  background: var(--gold);
}
#site-header { color: var(--ink); }
#site-header.header-hero { color: var(--paper); }
#site-header.header-hero.is-scrolled { color: var(--ink); }

#site-header .logo-on-light { display: block; }
#site-header .logo-on-dark { display: none; }
#site-header.header-hero:not(.is-scrolled) .logo-on-light { display: none; }
#site-header.header-hero:not(.is-scrolled) .logo-on-dark { display: block; }

#mobile-menu { color: var(--ink); }

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1), transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal.is-visible { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* Product card */
.stone-card {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  background: var(--charcoal);
}
.stone-card .stone-card-img {
  aspect-ratio: 4 / 5;
  object-fit: cover;
  transition: transform 1.1s cubic-bezier(0.16, 1, 0.3, 1);
}
.stone-card:hover .stone-card-img {
  transform: scale(1.06);
}
.stone-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 12, 14, 0) 45%, rgba(11, 12, 14, 0.86) 100%);
}
.stone-tag {
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(245, 242, 236, 0.4);
  color: var(--paper);
  backdrop-filter: blur(6px);
}

/* Kart alt şeridi: "Teklif Al" butonu, kartı kaplayan ürün linkinin (z-10)
   üstünde kalmalı. Şerit z-20'de ama tıklamaları yutmasın diye
   pointer-events kapalı; sadece butonun kendisi tıklanabilir. */
.stone-card-meta {
  z-index: 20;
  pointer-events: none;
}
.stone-card-meta .btn {
  pointer-events: auto;
}

/* Product card zoom button */
.stone-card-zoom {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 20;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(11, 12, 14, 0.5);
  border: 1px solid rgba(245, 242, 236, 0.4);
  color: var(--paper);
  backdrop-filter: blur(6px);
  cursor: zoom-in;
  transition: background 0.2s ease, transform 0.2s ease;
}
.stone-card-zoom:hover {
  background: rgba(11, 12, 14, 0.75);
  transform: scale(1.06);
}

#detail-image {
  cursor: zoom-in;
}

/* Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 5vw, 3rem);
  background: rgba(11, 12, 14, 0.92);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
.lightbox-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}
.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 12px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.lightbox-close {
  position: absolute;
  top: clamp(1rem, 3vw, 2rem);
  right: clamp(1rem, 3vw, 2rem);
  z-index: 1;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(245, 242, 236, 0.12);
  color: var(--paper);
  border: 1px solid rgba(245, 242, 236, 0.3);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(6px);
  transition: background 0.2s ease;
}
.lightbox-close:hover {
  background: rgba(245, 242, 236, 0.22);
}

/* Numbered trust strip */
.trust-item {
  border-top: 1px solid var(--line);
  padding-top: 1.6rem;
  transition: border-color 0.4s ease;
}
.trust-item:hover {
  border-top-color: var(--gold);
}
.trust-num {
  font-family: 'Playfair Display', serif;
  font-size: 0.95rem;
  color: var(--gold);
}

/* Gold spotlight vignette for dark sections */
.spotlight {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(60% 55% at 50% 0%, rgba(201, 162, 75, 0.16), rgba(11, 12, 14, 0) 70%);
}

/* WhatsApp floating button */
#wa-float {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 90;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: #25d366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 26px -8px rgba(0, 0, 0, 0.45);
  border: 2px solid rgba(201, 162, 75, 0.55);
  transition: transform 0.3s ease;
}
#wa-float:hover {
  transform: translateY(-3px) scale(1.04);
}

/* Language toggle */
.lang-toggle button {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  font-weight: 500;
  opacity: 0.5;
  transition: opacity 0.25s ease;
}
.lang-toggle button.active {
  opacity: 1;
  color: var(--gold);
}

/* Mobile menu */
#mobile-menu {
  transform: translateY(-100%);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
#mobile-menu.is-open {
  transform: translateY(0);
}

/* Filter tabs */
.filter-tab {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  transition: all 0.3s ease;
}
.filter-tab.active,
.filter-tab:hover {
  background: var(--onyx);
  color: var(--paper);
  border-color: var(--onyx);
}

/* Form fields */
.field label {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.5rem;
  display: block;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  padding: 0.7rem 0.1rem;
  font-family: 'Jost', sans-serif;
  font-size: 0.98rem;
  color: var(--ink);
  transition: border-color 0.3s ease;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--gold);
}

::selection {
  background: var(--gold-bright);
  color: var(--onyx);
}