/* ==========================================================================
   1. Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  /* Subtle Stone Texture - Enhanced */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300' viewBox='0 0 300 300'%3E%3Cfilter id='n' x='0' y='0'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.006' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  color: var(--color-text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* ==========================================================================
   2. Variables & Tokens
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Montserrat:wght@300;400;500;600;700&display=swap');

:root {
  /* Colors - High-End Alabaster & Onyx */
  --color-bg: #f9f9f7; 
  --color-bg-alt: #f3f3f0;
  --color-text-main: #121212;
  --color-text-muted: #555555;
  --color-border: rgba(0,0,0,0.07);
  --color-accent: #000000;
  
  /* Fonts */
  --font-headline: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Spacing */
  --container-max: 1300px;
  --section-padding: clamp(5rem, 12vw, 10rem);
  --gutter: 2.5rem;

  /* Shadows & Transitions */
  --shadow-premium: 0 30px 60px rgba(0,0,0,0.05);
  --transition-smooth: all 0.7s cubic-bezier(0.19, 1, 0.22, 1);
}

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4 {
  font-family: var(--font-headline);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-text-main);
}

h1 { font-size: clamp(3rem, 10vw, 5rem); }
h2 { font-size: clamp(2.2rem, 6vw, 3.5rem); }
h3 { font-size: 1.75rem; }

p {
  color: var(--color-text-muted);
  font-weight: 400;
}

.label-mini {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-weight: 600;
  display: block;
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   4. Layout & Components
   ========================================================================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: var(--section-padding) 0;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

/* Header */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(249, 249, 247, 0.85);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-smooth);
}

.header-container {
  height: 90px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 55px;
  width: auto;
  transition: var(--transition-smooth);
}

.main-nav {
  display: flex;
  gap: 3.5rem;
}

.menu-toggle {
  display: none;
}

.header-action {
  display: flex;
  align-items: center;
}

.nav-link {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.6;
}

.nav-link:hover, .nav-link.active {
  opacity: 1;
  color: var(--color-accent);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  padding: 1.2rem 2.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition-smooth);
  border-radius: 4px;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

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

.btn-secondary:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-3px);
}

/* Cards */
.product-card {
  position: relative;
  overflow: hidden;
  transition: var(--transition-smooth);
  background: #fff;
  border-radius: 4px;
  box-shadow: var(--shadow-premium);
  border: 1px solid var(--color-border);
}

.card-image {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.product-card:hover {
  transform: translateY(-15px);
  box-shadow: 0 40px 80px rgba(0,0,0,0.08);
}

.product-card:hover .card-image {
  transform: scale(1.04);
}

.card-content {
  padding: 2rem;
  text-align: center;
}

.card-title {
  font-size: 1.2rem;
  margin: 0.75rem 0;
}

.card-category {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 600;
}

/* Hero */
.hero-minimal {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  padding: 140px 0 80px;
}

.hero-title {
  margin-bottom: 2rem;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 3.5rem;
  max-width: 600px;
}

.hero-image-container img {
  width: 100%;
  border-radius: 4px;
  box-shadow: 0 40px 100px rgba(0,0,0,0.08);
}

/* Mimari Portfolyo Düzeni */
.portfolio-hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: flex-start;
    margin-bottom: 10rem;
}

.portfolio-hero-img img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 40px 100px rgba(0,0,0,0.07);
}

.portfolio-info {
    padding-top: 2rem;
}

.portfolio-info h1 {
    line-height: 1;
    margin-bottom: 2rem;
}

.portfolio-info .description {
    font-size: 1.2rem;
    line-height: 2;
    margin-bottom: 4rem;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    margin-top: 8rem;
}

.portfolio-grid img {
    width: 100%;
    height: auto;
    border-radius: 4px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}

.portfolio-grid img:hover {
    transform: scale(1.03);
    box-shadow: 0 50px 100px rgba(0,0,0,0.12);
}

/* Custom Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.98);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 95%;
    max-height: 95vh;
    object-fit: contain;
    animation: zoomIn 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.lightbox-close {
    position: absolute;
    top: 40px;
    right: 40px;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    opacity: 0.5;
    transition: var(--transition-smooth);
}

.lightbox-close:hover {
    opacity: 1;
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transition: opacity 1.5s cubic-bezier(0.19, 1, 0.22, 1), transform 1.5s cubic-bezier(0.19, 1, 0.22, 1);
}

.animate-on-scroll.fade-in-up { transform: translateY(40px); }
.animate-on-scroll.fade-in-left { transform: translateX(-40px); }
.animate-on-scroll.fade-in-right { transform: translateX(40px); }

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translate(0, 0);
}
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }

/* Footer */
.main-footer {
  padding: 10rem 0 4rem;
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer-bottom {
  margin-top: 6rem;
  padding-top: 3rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* ==========================================================================
   7. Responsive
   ========================================================================== */
@media (max-width: 1200px) {
    :root { --gutter: 2rem; }
    .portfolio-hero { gap: 4rem; }
}

@media (max-width: 992px) {
  .main-nav { gap: 2rem; }
  .portfolio-hero { grid-template-columns: 1fr; gap: 4rem; }
  .portfolio-grid { grid-template-columns: 1fr; gap: 3rem; }
  .portfolio-info { padding-top: 0; text-align: center; }
  .portfolio-info .description { max-width: 700px; margin-left: auto; margin-right: auto; }
  .portfolio-info div { justify-content: center; }
}

@media (max-width: 768px) {
  .header-container {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    flex: 1;
    display: flex;
    justify-content: flex-start;
  }

  .logo img { height: 45px; }

  .menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    flex: 1;
    justify-content: center;
    align-items: center;
    margin: 0;
    z-index: 1001;
  }
  
  .header-action {
    flex: 1;
    display: flex;
    justify-content: flex-end;
  }

  .header-action .btn {
    padding: 0.5rem 1rem !important;
    font-size: 0.7rem !important;
    white-space: nowrap;
  }

  .main-nav { 
    display: none; 
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    padding: 3rem;
    gap: 2rem;
    border-bottom: 1px solid var(--color-border);
    text-align: center;
    z-index: 999;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
  }

  .main-nav.is-active {
    display: flex;
  }

  .grid-12 { grid-template-columns: 1fr; gap: 4rem; }
  .grid-12 > div, .grid-12 > section { 
    grid-column: 1 / -1 !important; 
    text-align: center !important;
  }
  
  .menu-toggle span {
    width: 30px;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-smooth);
  }

  .menu-toggle.is-active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .menu-toggle.is-active span:nth-child(2) { opacity: 0; }
  .menu-toggle.is-active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  .hero-minimal { text-align: center; padding-top: 120px; }
  .hero-description { margin-left: auto; margin-right: auto; }
  .section { padding: 4rem 0; }
  
  .footer-bottom { flex-direction: column; gap: 1.5rem; text-align: center; }
}