/* ============================================================
   AhırProjeleri.com — main.css
   Teknik Mühendislik Teması (Antrasit + Zümrüt Yeşili + Blueprint Grid)
   Sıfır Harici CDN — %100 Yerel CSS
   ============================================================ */

/* 1. CSS CUSTOM PROPERTIES */
:root {
  --color-bg:          #0B1120;
  --color-bg-card:     #131D31;
  --color-bg-card-hover:#1A2642;
  --color-bg-light:    #1E293B;
  --color-surface:     #F8FAFC;
  --color-surface-card:#FFFFFF;
  
  --brand-primary:     #047857; /* Zümrüt Yeşili */
  --brand-primary-hover:#065F46;
  --brand-light:       #10B981;
  --brand-dark:        #064E3B;
  
  --accent-gold:       #D97706; /* Amber / Mühendislik Sarısı */
  --accent-blue:       #2563EB;
  --accent-cyan:       #06B6D4;
  
  --text-main:         #F1F5F9;
  --text-muted:        #94A3B8;
  --text-dark:         #0F172A;
  --text-dark-muted:   #475569;
  
  --border-dark:       #334155;
  --border-light:      #E2E8F0;
  --border-accent:     rgba(16, 185, 129, 0.25);
  
  --whatsapp:          #25D366;
  --whatsapp-hover:    #20BA5A;
  
  --font-sans:         system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono:         ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-sm:         6px;
  --radius-md:         10px;
  --radius-lg:         16px;
  --radius-xl:         24px;
  
  --shadow-sm:         0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md:         0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg:         0 10px 15px -3px rgba(0, 0, 0, 0.2), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-glow:       0 0 20px rgba(16, 185, 129, 0.15);
  
  --max-w:             1280px;
  --transition:        all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. BASE & RESET */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-bg);
  color: var(--text-main);
  font-family: var(--font-sans);
}

body {
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  background-image: radial-gradient(rgba(51, 65, 85, 0.3) 1px, transparent 1px);
  background-size: 32px 32px;
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* 3. LAYOUT & CONTAINERS */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section-py {
  padding-top: 64px;
  padding-bottom: 64px;
}

@media (min-width: 768px) {
  .section-py {
    padding-top: 88px;
    padding-bottom: 88px;
  }
}

/* Hero Section Arka Plan Görseli & Gradyan */
.hero-section {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border-dark);
  padding-top: 76px;
  padding-bottom: 76px;
  background-color: var(--color-bg);
  background-image: url('../images/hero-bg.jpg');
  background-size: cover;
  background-position: center 30%;
  background-repeat: no-repeat;
}

@media (min-width: 768px) {
  .hero-section {
    padding-top: 100px;
    padding-bottom: 100px;
  }
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, 
    rgba(11, 17, 32, 0.76) 0%, 
    rgba(11, 17, 32, 0.86) 50%, 
    rgba(11, 17, 32, 0.98) 100%
  );
  z-index: 1;
  pointer-events: none;
}

/* 4. TYPOGRAPHY & BADGES */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: #FFFFFF;
}

h1 { font-size: clamp(2rem, 4vw, 3.25rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

.lead-text {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 600;
  background: rgba(16, 185, 129, 0.12);
  color: var(--brand-light);
  border: 1px solid var(--border-accent);
  width: fit-content;
}

.badge-gold {
  background: rgba(217, 119, 6, 0.12);
  color: #FBBF24;
  border-color: rgba(217, 119, 6, 0.3);
}

.badge-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

/* 5. BUTTONS & CTAs */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(4, 120, 87, 0.3);
}
.btn-primary:hover {
  background: var(--brand-light);
  color: #064E3B;
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--color-bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-dark);
}
.btn-secondary:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--brand-light);
  transform: translateY(-2px);
}

.btn-gold {
  background: var(--accent-gold);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3);
}
.btn-gold:hover {
  background: #B45309;
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: var(--whatsapp);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp:hover {
  background: var(--whatsapp-hover);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

/* SVG Icon Helpers */
.icon-inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  flex-shrink: 0;
}

.btn-icon-right {
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.btn:hover .btn-icon-right {
  transform: translateX(3px);
}

.btn-icon-left {
  flex-shrink: 0;
}

.star-rating-wrap {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--accent-gold);
}
.star-icon {
  width: 16px;
  height: 16px;
  color: var(--accent-gold);
  fill: currentColor;
}

/* 6. TOPBAR & NAVBAR */
.site-topbar {
  background: #080D1A;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
  font-size: 0.8125rem;
  color: var(--text-muted);
  position: relative;
  z-index: 51;
}

.topbar-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  padding: 6px 0;
  gap: 16px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
}

.topbar-trust {
  color: var(--text-main);
  font-weight: 500;
}

.topbar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-light);
  box-shadow: 0 0 8px var(--brand-light);
  flex-shrink: 0;
}

.topbar-sep {
  color: var(--border-dark);
  font-size: 0.75rem;
}

.topbar-hours {
  color: var(--text-muted);
}

.topbar-hours svg {
  color: var(--accent-gold);
}

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-weight: 500;
  transition: var(--transition);
}

.topbar-link:hover {
  color: #FFFFFF;
}

.topbar-email svg {
  color: var(--text-muted);
}
.topbar-email:hover svg {
  color: var(--brand-light);
}

.topbar-phone {
  color: var(--text-main);
}
.topbar-phone svg {
  color: var(--brand-light);
}
.topbar-phone strong {
  color: #FFFFFF;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.topbar-phone:hover {
  color: var(--brand-light);
}
.topbar-phone:hover strong {
  color: var(--brand-light);
}

.topbar-wa {
  color: #86EFAC;
}
.topbar-wa svg {
  color: var(--whatsapp);
}
.topbar-wa:hover {
  color: #FFFFFF;
}

@media (max-width: 1023px) {
  .topbar-left {
    display: none;
  }
  .topbar-wrap {
    justify-content: flex-end;
  }
}

@media (max-width: 767px) {
  .topbar-wrap {
    justify-content: space-between;
    min-height: 34px;
    padding: 5px 0;
    font-size: 0.75rem;
    gap: 8px;
  }
  .topbar-right {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }
  .topbar-email {
    display: none;
  }
  .topbar-phone-label {
    display: none;
  }
}

@media (max-width: 380px) {
  .topbar-wa span {
    display: none;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dark);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
}
.brand-logo span {
  color: var(--brand-light);
}

.brand-badge {
  font-size: 0.6875rem;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--brand-light);
  border: 1px solid var(--border-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 16px;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
    gap: 18px;
  }
  .nav-link {
    font-size: 0.9375rem;
    white-space: nowrap;
  }
  .nav-cta-desktop .btn {
    padding: 10px 20px;
    font-size: 0.9375rem;
  }
}

@media (min-width: 1200px) {
  .nav-links {
    gap: 26px;
  }
  .nav-link {
    font-size: 0.96875rem;
  }
  .nav-cta-desktop .btn {
    padding: 11px 24px;
    font-size: 0.9375rem;
  }
}

@media (min-width: 1360px) {
  .nav-links {
    gap: 32px;
  }
  .nav-link {
    font-size: 1rem;
  }
}

.nav-link {
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
  letter-spacing: -0.01em;
  padding: 6px 4px;
}
.nav-link:hover {
  color: #FFFFFF;
}
.nav-link.active {
  color: var(--brand-light);
  font-weight: 600;
}

.nav-cta-desktop {
  display: none;
}
@media (min-width: 768px) {
  .nav-cta-desktop {
    display: flex;
    align-items: center;
    gap: 12px;
  }
}

.hamburger-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-sm);
  color: #FFFFFF;
}
@media (min-width: 1024px) {
  .hamburger-btn {
    display: none;
  }
}

/* 7. OFF-CANVAS MOBILE MENU */
.offcanvas-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.offcanvas-overlay.open {
  opacity: 1;
  visibility: visible;
}

.offcanvas-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 85%;
  max-width: 320px;
  background: var(--color-bg-card);
  border-left: 1px solid var(--border-dark);
  z-index: 999;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 24px;
  overflow-y: auto;
}
.offcanvas-panel.open {
  transform: translateX(0);
}

.offcanvas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-dark);
  margin-bottom: 24px;
}

.offcanvas-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.offcanvas-nav-link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-main);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}
.offcanvas-nav-link:hover {
  background: rgba(16, 185, 129, 0.1);
  color: var(--brand-light);
}
.offcanvas-nav-link-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.offcanvas-nav-link svg.offcanvas-icon {
  color: var(--brand-light);
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.offcanvas-nav-link svg.offcanvas-arrow {
  color: var(--text-muted);
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.offcanvas-nav-link:hover svg.offcanvas-arrow {
  color: var(--brand-light);
  transform: translateX(3px);
}

/* 8. CARDS & GRIDS */
.grid-2 { display: grid; grid-template-columns: 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: 1fr; gap: 24px; }
.grid-4 { display: grid; grid-template-columns: 1fr; gap: 20px; }

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.feasibility-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 640px) {
  .feasibility-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .feasibility-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.specs-grid-6 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  font-size: 0.875rem;
}
@media (min-width: 640px) {
  .specs-grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .specs-grid-6 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.card-blueprint {
  background-image: linear-gradient(rgba(51, 65, 85, 0.2) 1px, transparent 1px), linear-gradient(90deg, rgba(51, 65, 85, 0.2) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* 9. QUICK INFO CARD (16 BÖLÜMLÜ PROJE BAŞI) */
.quick-info-box {
  background: linear-gradient(135deg, #131D31 0%, #1A2744 100%);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 28px;
  margin-bottom: 48px;
  box-shadow: var(--shadow-glow);
}

.quick-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
@media (min-width: 768px) {
  .quick-info-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 1024px) {
  .quick-info-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.quick-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.quick-info-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.quick-info-value {
  font-size: 1.125rem;
  font-weight: 700;
  color: #FFFFFF;
}

/* 10. SECTION BLOCKS (01 - 16) */
.project-section-block {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 32px;
  transition: var(--transition);
}
.project-section-block:hover {
  border-color: rgba(51, 65, 85, 0.8);
}

.section-num-badge {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--brand-light);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--border-accent);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: 12px;
}

.section-highlights-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 20px;
}
@media (min-width: 768px) {
  .section-highlights-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.section-highlight-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(15, 23, 42, 0.6);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--brand-light);
  font-size: 0.9375rem;
}

/* 11. CALCULATOR COMPONENT */
.calc-wrapper {
  background: var(--color-bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-glow);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  background: #0B1120;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  color: #FFFFFF;
  outline: none;
  transition: var(--transition);
}
.form-control:focus {
  border-color: var(--brand-light);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.calc-result-box {
  background: linear-gradient(135deg, #0B1120 0%, #152238 100%);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-lg);
  padding: 24px;
}

/* 12. TABLES & COMPARISONS */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  margin: 24px 0;
}

.custom-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.custom-table th {
  background: #1A2642;
  color: #FFFFFF;
  padding: 16px 20px;
  font-weight: 600;
  border-bottom: 2px solid var(--border-dark);
}

.custom-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-dark);
  color: var(--text-muted);
}
.custom-table tr:hover td {
  background: var(--color-bg-card-hover);
  color: var(--text-main);
}

/* 13. FAQ ACCORDION */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: var(--brand-light);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: #FFFFFF;
  text-align: left;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
  color: var(--brand-light);
  flex-shrink: 0;
}
.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}
.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 20px 24px;
}

/* 14. BREADCRUMBS */
.breadcrumb-nav {
  margin-bottom: 24px;
  font-size: 0.875rem;
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}
.breadcrumb-item a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.breadcrumb-item a:hover {
  color: var(--brand-light);
}
.breadcrumb-item.active span {
  color: #FFFFFF;
  font-weight: 600;
}
.breadcrumb-sep {
  color: var(--border-dark);
  display: inline-flex;
  align-items: center;
}
.breadcrumb-sep-svg {
  width: 12px;
  height: 12px;
  color: var(--border-dark);
  flex-shrink: 0;
}
.breadcrumb-home-icon {
  width: 14px;
  height: 14px;
  color: var(--brand-light);
  flex-shrink: 0;
}

/* 15. FLOATING BUTTONS (Kural 37 & 38) */
.btn-back-to-top {
  position: fixed;
  bottom: 24px;
  left: 20px;
  z-index: 99;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.3s ease, transform 0.3s ease, background 0.2s;
}
.btn-back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.btn-back-to-top:hover {
  background: var(--brand-primary);
  border-color: var(--brand-light);
}

.btn-whatsapp-floating {
  position: fixed;
  bottom: 24px;
  right: 20px;
  z-index: 99;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--whatsapp);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  animation: pulse-green 2s infinite;
  transition: transform 0.25s ease;
}
.btn-whatsapp-floating:hover {
  transform: scale(1.1);
  background: var(--whatsapp-hover);
}

@keyframes pulse-green {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
  }
  70% {
    box-shadow: 0 0 0 16px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* 16. FOOTER */
.site-footer {
  background: #070B14;
  border-top: 1px solid var(--border-dark);
  padding-top: 64px;
  padding-bottom: 32px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-link {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.footer-link:hover {
  color: var(--brand-light);
}

.footer-disclaimer {
  background: rgba(19, 29, 49, 0.6);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(51, 65, 85, 0.5);
  font-size: 0.8125rem;
  color: var(--text-muted);
}
@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

/* 17. ABOUT & CORPORATE COMPONENTS */
.about-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 32px 0 48px 0;
}
@media (min-width: 1024px) {
  .about-stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
}
.about-stat-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
}
.about-stat-card:hover {
  border-color: var(--brand-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}
.about-stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--brand-light);
  font-family: var(--font-mono);
  line-height: 1.1;
  margin-bottom: 6px;
}
.about-stat-label {
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 4px;
}
.about-stat-sub {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Founders Grid */
.founders-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin: 32px 0;
}
@media (min-width: 768px) {
  .founders-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.founder-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-xl);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.founder-card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}
.founder-card-top {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.founder-avatar {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-light);
  flex-shrink: 0;
}
.founder-role {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-gold);
  font-weight: 700;
  display: block;
}
.founder-info h3 {
  font-size: 1.25rem;
  margin: 2px 0;
  color: #FFFFFF;
}
.founder-title {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.founder-bio {
  font-size: 0.9375rem;
  color: #CBD5E1;
  line-height: 1.7;
  margin-bottom: 20px;
}
.founder-highlights {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: rgba(11, 17, 32, 0.6);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}
.founder-highlight-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: #FFFFFF;
}
.founder-highlight-item svg {
  color: var(--brand-light);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}
.founder-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}
.founder-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 9999px;
  background: rgba(51, 65, 85, 0.4);
  color: var(--text-muted);
  border: 1px solid var(--border-dark);
}

/* Values Grid */
.values-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 32px 0;
}
@media (min-width: 768px) {
  .values-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
.value-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}
.value-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-3px);
}
.value-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(217, 119, 6, 0.15);
  border: 1px solid rgba(217, 119, 6, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  margin-bottom: 16px;
}
.value-card h3 {
  font-size: 1.125rem;
  margin-bottom: 10px;
  color: #FFFFFF;
}
.value-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Process Grid (Nasıl Çalışıyoruz) */
.process-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 32px 0;
}
@media (min-width: 640px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}
.process-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
  transition: var(--transition);
}
.process-card:hover {
  border-color: var(--brand-light);
  transform: translateY(-3px);
}
.process-step-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-light);
  line-height: 1;
  margin-bottom: 12px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.process-step-num span {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-gold);
  text-transform: uppercase;
}
.process-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
  color: #FFFFFF;
}
.process-card p {
  font-size: 0.84375rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Why Grid */
.why-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 32px 0;
}
@media (min-width: 768px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
.why-item {
  background: var(--color-bg-card);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: var(--transition);
}
.why-item:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}
.why-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-light);
  flex-shrink: 0;
}
.why-content h4 {
  font-size: 1.0625rem;
  margin-bottom: 6px;
  color: #FFFFFF;
}
.why-content p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 14. MAP & LOCATION SECTION STYLES */
.map-section {
  margin-top: 32px;
  margin-bottom: 48px;
}

.map-card {
  background: var(--color-bg-card);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
}

.map-header-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 18px 24px;
  background: #0D1627;
  border-bottom: 1px solid var(--border-dark);
}

.map-header-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  color: #FFFFFF;
}

.coords-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--brand-light);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
}

.map-iframe-wrap {
  position: relative;
  width: 100%;
  height: 440px;
  background: #0B1120;
}

@media (max-width: 768px) {
  .map-iframe-wrap {
    height: 330px;
  }
}

.map-iframe-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.map-bottom-bar {
  padding: 28px;
  background: #101B2E;
  border-top: 1px solid var(--border-dark);
}

.map-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.map-transit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .map-transit-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.transit-card {
  background: rgba(11, 17, 32, 0.7);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: var(--transition);
}

.transit-card:hover {
  border-color: var(--border-accent);
  background: rgba(11, 17, 32, 0.95);
  transform: translateY(-2px);
}

.transit-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--border-accent);
  color: var(--brand-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.transit-content h4 {
  font-size: 0.9375rem;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.transit-content p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.map-notice-box {
  background: rgba(217, 119, 6, 0.08);
  border: 1px solid rgba(217, 119, 6, 0.25);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8125rem;
  color: #FCD34D;
}