/* =========================================
   CAN TEKNİK İKLİMLENDİRME - TASARIM SİSTEMİ
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;700;800&display=swap');

:root {
  /* Renk Paleti */
  --color-primary: #03045E; /* Koyu Lacivert */
  --color-secondary: #0077B6; /* Mavi */
  --color-accent: #00B4D8; /* Buz Mavisi */
  --color-light: #CAF0F8; /* Çok Açık Mavi */
  --color-action: #FF6B35; /* Turuncu (Isı/Enerji/Aksiyon) */
  --color-action-hover: #E85D2A;
  
  --color-text-dark: #1E293B;
  --color-text-light: #64748B;
  --color-bg-main: #F8FAFC;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;

  /* Tipografi */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Gölgeler & Radius */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --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(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
  --shadow-glow: 0 0 15px rgba(0, 180, 216, 0.4);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-full: 9999px;
  
  /* Layout */
  --container-width: 1200px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* =========================================
   RESET & TEMEL AYARLAR
   ========================================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* =========================================
   BİLEŞENLER (COMPONENTS)
   ========================================= */

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-action {
  background-color: var(--color-action);
  color: var(--color-white);
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
}

.btn-action:hover {
  background-color: var(--color-action-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.6);
  color: white;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

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

/* Kartlar */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  border: 1px solid var(--color-border);
  height: 100%;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.card-icon {
  width: 60px;
  height: 60px;
  background: var(--color-light);
  color: var(--color-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 1.5rem;
  transition: var(--transition-normal);
}

.card:hover .card-icon {
  background: var(--color-secondary);
  color: var(--color-white);
}

/* Bölüm Başlıkları */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-subtitle {
  color: var(--color-action);
  font-family: var(--font-heading);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.875rem;
  display: block;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

/* =========================================
   HEADER & NAVBAR
   ========================================= */
.top-bar {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 0.5rem 0;
  font-size: 0.875rem;
}

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

.top-bar-contact {
  display: flex;
  gap: 1.5rem;
}

.top-bar-contact a {
  color: var(--color-light);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.top-bar-contact a:hover {
  color: var(--color-white);
}

.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.header.scrolled {
  padding: 0.5rem 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  color: var(--color-secondary);
}

.logo i {
  color: var(--color-action);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--color-text-dark);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
}

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

.nav-links a:hover {
  color: var(--color-secondary);
}

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

.nav-links a.active {
  color: var(--color-secondary);
}

.mobile-menu-btn {
  display: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
  background: none;
  border: none;
}

/* =========================================
   HERO SECTION (ANA SAYFA)
   ========================================= */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(3, 4, 94, 0.9) 0%, rgba(0, 119, 182, 0.8) 100%), url('https://images.unsplash.com/photo-1581094288338-2314dddb7ece?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
  color: var(--color-white);
  padding: 4rem 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg width="20" height="20" xmlns="http://www.w3.org/2000/svg"><circle cx="2" cy="2" r="2" fill="rgba(255,255,255,0.05)"/></svg>');
  z-index: 1;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  max-width: 600px;
}

.hero-subtitle {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(5px);
}

.hero h1 {
  font-size: 3.5rem;
  color: var(--color-white);
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero h1 span {
  color: var(--color-accent);
}

.hero p {
  font-size: 1.125rem;
  color: var(--color-light);
  margin-bottom: 2rem;
}

.hero-btns {
  display: flex;
  gap: 1rem;
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  position: relative;
  z-index: 2;
  animation: float 6s ease-in-out infinite;
}

.hero-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--color-white);
  color: var(--color-text-dark);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: float 6s ease-in-out infinite reverse;
}

.hero-badge i {
  font-size: 2.5rem;
  color: var(--color-secondary);
}

.hero-badge-text strong {
  display: block;
  font-size: 1.5rem;
  font-family: var(--font-heading);
  color: var(--color-primary);
}

/* =========================================
   SECTIONS & LAYOUTS
   ========================================= */
.section {
  padding: 6rem 0;
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  align-items: center;
}

/* =========================================
   HİZMETLER (HOME)
   ========================================= */
.service-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.card-text {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.card-link {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.card-link:hover {
  gap: 0.8rem;
}

/* =========================================
   HAKKIMIZDA & NEDEN BİZ
   ========================================= */
.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-features {
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.feature-icon {
  width: 40px;
  height: 40px;
  background: var(--color-light);
  color: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
}

.feature-text h4 {
  margin-bottom: 0.25rem;
}

.feature-text p {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* =========================================
   CTA SECTION
   ========================================= */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  text-align: center;
  padding: 4rem 0;
  border-radius: var(--radius-lg);
  margin: 4rem auto;
  width: 95%;
  max-width: 1400px;
  box-shadow: var(--shadow-lg);
}

.cta-section h2 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-section p {
  font-size: 1.125rem;
  color: var(--color-light);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
  background-color: var(--color-text-dark);
  color: var(--color-border);
  padding: 5rem 0 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 1rem;
  display: block;
}

.footer-logo span {
  color: var(--color-accent);
}

.footer p {
  color: #94A3B8;
  margin-bottom: 1.5rem;
}

.footer-title {
  color: var(--color-white);
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #94A3B8;
}

.footer-links a:hover {
  color: var(--color-accent);
  padding-left: 5px;
}

.footer-contact li {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  color: #94A3B8;
}

.footer-contact i {
  color: var(--color-accent);
  font-size: 1.2rem;
  margin-top: 4px;
}

.footer-bottom {
  background-color: #0F172A;
  padding: 1.5rem 0;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-bottom p {
  margin: 0;
  font-size: 0.9rem;
}

/* =========================================
   WIDGETS (WHATSAPP & CALL)
   ========================================= */
.floating-widgets {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 9999;
}

.widget-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
  transition: var(--transition-normal);
  position: relative;
}

.widget-whatsapp {
  background-color: #25D366;
}

.widget-call {
  background-color: var(--color-secondary);
}

.widget-btn:hover {
  transform: scale(1.1);
}

.widget-whatsapp::before,
.widget-whatsapp::after {
  content: '';
  position: absolute;
  border: 2px solid #25D366;
  left: -10px;
  right: -10px;
  top: -10px;
  bottom: -10px;
  border-radius: 50%;
  animation: pulse-ring 2s linear infinite;
  opacity: 0;
}

.widget-whatsapp::after {
  animation-delay: 1s;
}

.tooltip {
  position: absolute;
  right: 80px;
  background: var(--color-text-dark);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-family: var(--font-body);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  pointer-events: none;
}

.tooltip::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  border-width: 5px 0 5px 5px;
  border-style: solid;
  border-color: transparent transparent transparent var(--color-text-dark);
}

.widget-btn:hover .tooltip {
  opacity: 1;
  visibility: visible;
  right: 75px;
}


/* =========================================
   ANIMASYONLAR & RESPONSIVE
   ========================================= */
@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-15px); }
  100% { transform: translateY(0px); }
}

@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 0.5; }
  100% { transform: scale(1.3); opacity: 0; }
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content {
    margin: 0 auto;
  }
  
  .hero-btns {
    justify-content: center;
  }
  
  .hero-image {
    display: none; /* Mobilde karmaşıklığı azaltmak için resmi gizleyebilir veya küçültebiliriz. */
  }

  .grid-4, .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-2, .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .top-bar {
    display: none;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-white);
    flex-direction: column;
    padding: 2rem 0;
    gap: 1.5rem;
    box-shadow: var(--shadow-md);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path 0.3s ease-in-out;
  }

  .nav-links.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
  }

  .nav-links .btn {
    display: none; /* Mobilde CTA butonunu gizle, zaten widget var */
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .grid-4, .grid-3, .grid-2, .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-top {
    grid-template-columns: 1fr;
  }
  
  .floating-widgets {
    bottom: 1rem;
    right: 1rem;
  }
  
  .widget-btn {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }
}

/* =========================================
   İÇ SAYFALAR (PAGE HEADER)
   ========================================= */
.page-header {
  background: linear-gradient(rgba(3, 4, 94, 0.8), rgba(3, 4, 94, 0.8)), url('https://images.unsplash.com/photo-1581094288338-2314dddb7ece?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center/cover;
  padding: 6rem 0;
  text-align: center;
  color: var(--color-white);
}

.page-header h1 {
  color: var(--color-white);
  font-size: 3rem;
  margin-bottom: 1rem;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  color: var(--color-light);
}

.breadcrumb a {
  color: var(--color-accent);
}

/* =========================================
   İLETİŞİM SAYFASI & FORMLAR
   ========================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
}

.contact-info-item {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-info-item i {
  font-size: 1.5rem;
  color: var(--color-secondary);
  background: var(--color-light);
  padding: 1rem;
  border-radius: var(--radius-full);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--color-text-dark);
}

.form-control {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(0, 119, 182, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
}