/* ==========================================================================
   Kara Yapı Dekorasyon - Kurumsal Web Sitesi Stilleri
   Tasarım: Modern, Lüks Koyu Tema & Altın Vurgular (Dark & Gold Luxury)
   ========================================================================== */

:root {
  --bg-main: #0b0f19;
  --bg-card: #131b2e;
  --bg-card-hover: #1a253f;
  --bg-alt: #070a12;
  --primary: #f59e0b;
  --primary-light: #fbbf24;
  --primary-dark: #d97706;
  --primary-glow: rgba(245, 158, 11, 0.25);
  --accent-blue: #3b82f6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border: rgba(255, 255, 255, 0.08);
  --border-gold: rgba(245, 158, 11, 0.35);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.4);
  --shadow-gold: 0 10px 25px rgba(245, 158, 11, 0.2);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  color: #ffffff;
  font-weight: 700;
  line-height: 1.25;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-gold {
  color: var(--primary);
  background: linear-gradient(135deg, #fcd34d 0%, #f59e0b 50%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  background: rgba(245, 158, 11, 0.12);
  color: var(--primary-light);
  border: 1px solid var(--border-gold);
  margin-bottom: 16px;
}

/* Header & Navbar */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo img {
  height: 52px;
  width: 52px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  border: 1px solid var(--border-gold);
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #ffffff;
}

.brand-sub {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #0b0f19;
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(245, 158, 11, 0.35);
}

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

.btn-outline:hover {
  background: rgba(245, 158, 11, 0.1);
  color: var(--primary-light);
  border-color: var(--primary-light);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
}

.btn-whatsapp:hover {
  background: #20bd5a;
  box-shadow: 0 8px 20px rgba(37, 211, 102, 0.35);
  transform: translateY(-2px);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  font-size: 26px;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: 170px 0 100px;
  background: radial-gradient(circle at 50% 20%, rgba(245, 158, 11, 0.12) 0%, rgba(11, 15, 25, 0) 70%),
              linear-gradient(180deg, #0b0f19 0%, #070a12 100%);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.stat-item h3 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-light);
}

.stat-item p {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-card-showcase {
  position: relative;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 35px rgba(245, 158, 11, 0.15);
  position: relative;
}

.showcase-card-inner {
  text-align: center;
}

.showcase-logo {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-md);
  object-fit: cover;
  margin: 0 auto 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.8);
  border: 2px solid var(--primary);
  display: block;
}

.showcase-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
  text-align: left;
}

.showcase-feature-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.showcase-feature-item span {
  color: var(--primary);
}

/* Section Common */
.section {
  padding: 90px 0;
  position: relative;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-title {
  font-size: 36px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-muted);
}

/* Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 34px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-card), 0 0 25px rgba(245, 158, 11, 0.1);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
  color: var(--primary-light);
}

.service-title {
  font-size: 22px;
  margin-bottom: 14px;
}

.service-desc {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.service-list {
  list-style: none;
  margin-bottom: 24px;
}

.service-list li {
  font-size: 14px;
  color: #cbd5e1;
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.service-list li::before {
  content: '✓';
  color: var(--primary);
  font-weight: 800;
}

.service-card-btn {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.service-card-btn:hover {
  color: var(--primary-light);
  transform: translateX(4px);
}

/* Interactive Calculator */
.calc-box {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
  max-width: 860px;
  margin: 0 auto;
}

.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 30px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
}

.form-control {
  background: #0b0f19;
  border: 1px solid var(--border);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  color: #ffffff;
  font-size: 15px;
  outline: none;
  transition: var(--transition);
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.calc-result-box {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.calc-result-text {
  text-align: left;
}

.calc-result-title {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.calc-result-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary-light);
}

/* Portfolio / Projects Gallery */
.portfolio-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--primary);
  color: #0b0f19;
  border-color: var(--primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

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

.project-img-box {
  height: 230px;
  background: #1e293b;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(8px);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  border: 1px solid var(--border-gold);
}

.project-content {
  padding: 24px;
}

.project-title {
  font-size: 19px;
  margin-bottom: 8px;
}

.project-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.project-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-dim);
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

/* Why Choose Us */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  transition: var(--transition);
}

.why-card:hover {
  border-color: var(--border-gold);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
}

.why-icon {
  font-size: 36px;
  margin-bottom: 18px;
}

.why-title {
  font-size: 18px;
  margin-bottom: 10px;
}

.why-desc {
  font-size: 14px;
  color: var(--text-muted);
}

/* Contact & Quote Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 26px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary-light);
  flex-shrink: 0;
}

.contact-detail h4 {
  font-size: 16px;
  margin-bottom: 4px;
}

.contact-detail p, .contact-detail a {
  font-size: 15px;
  color: var(--text-muted);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-card);
}

/* Footer */
.site-footer {
  background: #060910;
  border-top: 1px solid var(--border);
  padding: 70px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin: 18px 0 24px;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 17px;
  margin-bottom: 20px;
  position: relative;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-dim);
  flex-wrap: wrap;
  gap: 16px;
}

/* Floating Action Button */
.floating-whatsapp {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  background: #25d366;
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.45);
  transition: var(--transition);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.floating-whatsapp:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.6);
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-cta {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .calc-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: rgba(11, 15, 25, 0.98);
    flex-direction: column;
    padding: 24px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 34px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .floating-whatsapp span {
    display: none;
  }
  .floating-whatsapp {
    padding: 16px;
    border-radius: 50%;
  }
}