/* ===================================
   CSS Variables (Design Tokens)
   =================================== */
:root {
  /* Colors */
  --color-primary: #0a3d91;
  --color-primary-dark: #08306f;
  --color-secondary: #6b7280;
  --color-background: #f3f4f6;
  --color-white: #ffffff;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-border: #e5e7eb;

  /* Typography */
  --font-heading: "Poppins", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;

  /* Transitions */
  --transition-fast: 0.3s ease-out;
  --transition-medium: 0.5s ease-out;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

/* ===================================
   Reset & Base Styles
   =================================== */
* {
  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);
  line-height: 1.6;
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ===================================
   Container & Layout
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
  position: sticky;
  top: 0;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo img {
  height: 50px;
  width: auto;
}

.nav {
  display: flex;
  gap: var(--spacing-md);
}

.nav-link {
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

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

.nav-link:hover {
  color: var(--color-primary);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-white) 100%);
  padding: var(--spacing-xl) 0;
  animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

.hero-text {
  animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
  from {
    transform: translateX(-50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.hero-image {
  animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
  from {
    transform: translateX(50px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.hero-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: scale(1.03);
}

/* ===================================
   Section Styles
   =================================== */
section {
  padding: var(--spacing-xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.section-divider {
  width: 80px;
  height: 4px;
  background-color: var(--color-primary);
  margin: 0 auto;
}

/* ===================================
   About Section
   =================================== */
.about {
  background-color: var(--color-white);
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
  text-align: justify;
}

/* ===================================
   Services Section
   =================================== */
.services {
  background-color: var(--color-background);
}

.services-interactive {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 800px;
  margin: 0 auto;
}

.service-card-interactive {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.service-card-interactive:hover {
  box-shadow: var(--shadow-md);
}

.service-card-main {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  align-items: center;
}

.service-main-image {
  width: 220px;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}

.service-card-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.service-card-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 0;
}

.service-expand-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background-color: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-fast);
  align-self: flex-start;
}

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

.service-expand-btn svg {
  transition: transform var(--transition-fast);
}

.service-card-interactive.expanded .service-expand-btn svg {
  transform: rotate(180deg);
}

.service-card-interactive.expanded .service-expand-btn span::after {
  content: " Gizle";
}

.service-gallery-wrapper {
  display: none;
  padding: 0 var(--spacing-md) var(--spacing-md);
}

.service-card-interactive.expanded .service-gallery-wrapper {
  display: block;
  animation: fadeInUp 0.5s ease-out;
}

.service-thumbnails {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--spacing-sm);
  animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.service-thumbnails img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.service-thumbnails img:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* ===================================
   Gallery Section
   =================================== */
.gallery {
  background-color: var(--color-white);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: pointer;
  aspect-ratio: 1;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(10, 61, 145, 0.9), transparent);
  color: var(--color-white);
  padding: var(--spacing-sm);
  transform: translateY(100%);
  transition: transform var(--transition-fast);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
}

.gallery-title {
  font-weight: 600;
  font-size: 1rem;
}

/* ===================================
   Lightbox
   =================================== */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-image {
  max-width: 90%;
  max-height: 80%;
  object-fit: contain;
  animation: zoomIn 0.3s ease-out;
}

@keyframes zoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  color: var(--color-white);
  font-size: 2rem;
  background-color: rgba(255, 255, 255, 0.1);
  border: none;
  cursor: pointer;
  padding: 1rem;
  transition: background-color var(--transition-fast);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.lightbox-close {
  top: 20px;
  right: 20px;
  font-size: 2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  transform: translateY(-50%) scale(1.1);
}

.lightbox-prev {
  left: 20px;
}

.lightbox-next {
  right: 20px;
}

.lightbox-caption {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  font-size: 1.125rem;
  background-color: rgba(0, 0, 0, 0.7);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

.gallery-lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 3000;
  align-items: center;
  justify-content: center;
}

.gallery-lightbox.active {
  display: flex;
}

.gallery-lightbox-content {
  position: relative;
  width: 90%;
  max-width: 1200px;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-lightbox-image {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  animation: slideIn 0.4s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.gallery-lightbox-image.slide-left {
  animation: slideInLeft 0.4s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.gallery-lightbox-close,
.gallery-lightbox-prev,
.gallery-lightbox-next {
  position: absolute;
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
  border: none;
  cursor: pointer;
  padding: 1rem;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
}

.gallery-lightbox-close:hover,
.gallery-lightbox-prev:hover,
.gallery-lightbox-next:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: scale(1.1);
}

.gallery-lightbox-close {
  top: 20px;
  right: 20px;
  font-size: 2rem;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-lightbox-prev,
.gallery-lightbox-next {
  top: 50%;
  transform: translateY(-50%);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-lightbox-prev:hover,
.gallery-lightbox-next:hover {
  transform: translateY(-50%) scale(1.1);
}

.gallery-lightbox-prev {
  left: 20px;
}

.gallery-lightbox-next {
  right: 20px;
}

.gallery-lightbox-counter {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-white);
  font-size: 1.125rem;
  background-color: rgba(0, 0, 0, 0.7);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
  background-color: var(--color-background);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.contact-info-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.contact-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

.contact-item a:hover {
  color: var(--color-primary);
}

.contact-form {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

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

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.map-container {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

/* ===================================
   Footer
   =================================== */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-logo {
  margin-bottom: var(--spacing-sm);
  filter: brightness(0) invert(1);
}

.footer-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.footer-text {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

.footer-text a:hover {
  color: var(--color-white);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.social-links a {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet (768px and below) */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.875rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-content {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .service-card-content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .service-main-image {
    width: 100%;
    height: 220px;
  }

  .service-thumbnails {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  .service-thumbnails img {
    height: 120px;
  }

  .gallery-lightbox-prev,
  .gallery-lightbox-next {
    width: 50px;
    height: 50px;
  }

  .gallery-lightbox-prev {
    left: 10px;
  }

  .gallery-lightbox-next {
    right: 10px;
  }

  .service-card-main {
    flex-direction: column;
    align-items: stretch;
  }

  .service-main-image {
    width: 100%;
    height: 200px;
  }

  .service-card-title {
    font-size: 1.5rem;
  }

  .service-thumbnails {
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  }

  .service-thumbnails img {
    height: 110px;
  }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
  :root {
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.625rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .lightbox-prev,
  .lightbox-next {
    font-size: 1.5rem;
    padding: 0.5rem;
  }

  .lightbox-close {
    top: 10px;
    right: 10px;
  }

  .service-card-main {
    padding: var(--spacing-sm);
  }

  .service-card-title {
    font-size: 1.25rem;
  }

  .service-main-image {
    height: 180px;
  }

  .service-expand-btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }

  .service-thumbnails {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-lightbox-prev,
  .gallery-lightbox-next {
    width: 40px;
    height: 40px;
    padding: 0.5rem;
  }

  .gallery-lightbox-close {
    top: 10px;
    right: 10px;
    width: 40px;
    height: 40px;
    font-size: 1.5rem;
  }

  .gallery-lightbox-counter {
    bottom: 20px;
    font-size: 1rem;
    padding: 0.5rem 1rem;
  }
}