/* ==========================================================================
   AVRUPA TEKNİK SOĞUTMA - Modern Kurumsal Tasarım Sistemi
   Doğal & Endüstriyel Soğutma Renk Paleti (Nordic Slate, Glacier Blue, Crisp White, Amber)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
  /* Doğal ve Dengeli Renk Paleti (Yapay AI neonlarından uzak, kurumsal endüstriyel) */
  --color-primary-950: #09111e;
  --color-primary-900: #0f1d30;
  --color-primary-850: #15273e;
  --color-primary-800: #1c324e;
  --color-primary-700: #264366;
  
  /* Doğal Buzul / Çelik Mavisi (Cooling & Engineering) */
  --color-accent-600: #0284c7;
  --color-accent-500: #0ea5e9;
  --color-accent-400: #38bdf8;
  --color-accent-100: #e0f2fe;
  --color-accent-50:  #f0f9ff;
  
  /* Doğal Sıcak Kehribar (Dikkat çekici & sıcak kontrast) */
  --color-warm-600: #d97706;
  --color-warm-500: #f59e0b;
  --color-warm-400: #fbbf24;
  --color-warm-50:  #fffbeb;

  /* Durum Renkleri */
  --color-success: #16a34a;
  --color-success-bg: #dcfce7;
  
  /* Nötr Yüzeyler & Metinler */
  --color-bg-body: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-card-alt: #f1f5f9;
  --color-text-dark: #0f172a;
  --color-text-body: #334155;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-subtle: #cbd5e1;

  /* Tipografi */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Gölgeler & Derinlik */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 25px rgba(2, 132, 199, 0.2);

  /* Yuvarlama ve Geçişler */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-max-width: 1240px;
  --header-height: 80px;
  --topbar-height: 42px;
}

/* Temel Sıfırlama */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-body);
  color: var(--color-text-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
  border: none;
}

/* Kapsayıcı */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   TOP BAR (Üst Bilgi Çubuğu)
   ========================================================================== */
.top-bar {
  background-color: var(--color-primary-950);
  color: var(--color-text-light);
  font-size: 0.85rem;
  font-weight: 500;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  position: relative;
  z-index: 60;
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-bar-left, .top-bar-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.top-bar-item svg {
  color: var(--color-accent-400);
}

.top-bar-link {
  color: #e2e8f0;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  transition: color var(--transition-fast);
}

.top-bar-link:hover {
  color: var(--color-accent-400);
}

.top-badge-safkar {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(2, 132, 199, 0.18);
  color: var(--color-accent-400);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.badge-pulse {
  width: 7px;
  height: 7px;
  background-color: #22c55e;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* ==========================================================================
   HEADER & NAVBAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 50;
  transition: all var(--transition-normal);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

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

.site-logo {
  display: flex;
  align-items: center;
  height: 52px;
}

.site-logo img {
  height: 52px;
  width: auto;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary-900);
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover {
  color: var(--color-accent-600);
  background-color: var(--color-accent-50);
}

.nav-link.active {
  color: var(--color-accent-600);
  background-color: var(--color-accent-50);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.mobile-toggle-btn {
  display: none;
  background: transparent;
  color: var(--color-primary-900);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   BUTTONS (Buton Tasarımları)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.4rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-600), #0369a1);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #075985);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.35);
  transform: translateY(-1px);
  color: #ffffff;
}

.btn-warm {
  background: linear-gradient(135deg, var(--color-warm-500), var(--color-warm-600));
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.25);
}

.btn-warm:hover {
  background: linear-gradient(135deg, #d97706, #b45309);
  box-shadow: 0 6px 16px rgba(217, 119, 6, 0.35);
  transform: translateY(-1px);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary-900);
  border: 1.5px solid var(--color-border-subtle);
}

.btn-outline:hover {
  background: var(--color-accent-50);
  border-color: var(--color-accent-600);
  color: var(--color-accent-600);
}

.btn-outline-white {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(4px);
}

.btn-outline-white:hover {
  background: #ffffff;
  color: var(--color-primary-950);
  border-color: #ffffff;
}

.btn-sm {
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.95rem 1.8rem;
  font-size: 1.05rem;
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25);
}

.btn-whatsapp:hover {
  background: #20ba59;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(37, 211, 102, 0.35);
}

/* ==========================================================================
   HERO SECTION (Ana Sayfa Giriş)
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #09121f 0%, #0f1d30 50%, #162b45 100%);
  color: #ffffff;
  padding: 5.5rem 0 5rem 0;
  overflow: hidden;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../assets/images/hero-bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  mix-blend-mode: luminosity;
  filter: contrast(1.1);
}

.hero-gradient-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(9, 17, 30, 0.92) 0%, rgba(15, 29, 48, 0.82) 55%, rgba(22, 43, 69, 0.65) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(2, 132, 199, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: var(--color-accent-400);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  letter-spacing: -0.5px;
}

.hero-title span {
  background: linear-gradient(135deg, #38bdf8 0%, #7dd3fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 2.2rem;
  max-width: 680px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 2rem;
}

.hero-hl-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-hl-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: var(--color-accent-400);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-hl-text strong {
  display: block;
  font-size: 0.95rem;
  color: #ffffff;
}

.hero-hl-text span {
  font-size: 0.8rem;
  color: #94a3b8;
}

/* ==========================================================================
   STATISTICS BAR (İstatistik Sayaçları)
   ========================================================================== */
.stats-section {
  position: relative;
  z-index: 20;
  margin-top: -2.5rem;
}

.stats-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  padding: 2rem 2.5rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.stat-item:not(:last-child) {
  border-right: 1px solid var(--color-border);
  padding-right: 1.5rem;
}

.stat-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent-50);
  color: var(--color-accent-600);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.5rem;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary-950);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   SECTION HEADERS (Bölüm Başlıkları)
   ========================================================================== */
.section {
  padding: 5.5rem 0;
}

.section-alt {
  background-color: #f1f5f9;
}

.section-dark {
  background: linear-gradient(135deg, var(--color-primary-950) 0%, var(--color-primary-900) 100%);
  color: #ffffff;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem auto;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}

.section-subtitle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-accent-600);
  margin-bottom: 0.75rem;
}

.section-dark .section-subtitle {
  color: var(--color-accent-400);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--color-primary-950);
  line-height: 1.25;
  letter-spacing: -0.3px;
  margin-bottom: 1rem;
}

.section-dark .section-title {
  color: #ffffff;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.section-dark .section-lead {
  color: #94a3b8;
}

/* ==========================================================================
   FOOTER (Alt Bilgi & Site Haritası)
   ========================================================================== */
.site-footer {
  background-color: var(--color-primary-950);
  color: #94a3b8;
  padding-top: 4.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 1.25rem 0 1.5rem 0;
  color: #cbd5e1;
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--color-accent-500);
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent-400);
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
  font-size: 0.92rem;
}

.footer-contact-icon {
  color: var(--color-accent-400);
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
}

.footer-bottom a {
  color: var(--color-accent-400);
}

/* ==========================================================================
   FLOATING ACTION BUTTONS (WhatsApp & Hızlı Arama)
   ========================================================================== */
.floating-actions {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 99;
}

.fab-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  transition: all var(--transition-fast);
  position: relative;
}

.fab-whatsapp {
  background: #25d366;
}

.fab-phone {
  background: var(--color-accent-600);
}

.fab-btn:hover {
  transform: scale(1.08) translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.fab-tooltip {
  position: absolute;
  right: 64px;
  background: var(--color-primary-900);
  color: #ffffff;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.fab-btn:hover .fab-tooltip {
  opacity: 1;
}