/* Mersan Havuz - Ana Stil Dosyası */
:root {
  --primary: #0c4a6e;
  --primary-dark: #082f49;
  --accent: #06b6d4;
  --accent-light: #67e8f9;
  --water: #0ea5e9;
  --surface: #f0f9ff;
  --surface-2: #e0f2fe;
  --text: #0f172a;
  --text-muted: #475569;
  --white: #ffffff;
  --shadow: 0 4px 24px rgba(12, 74, 110, 0.12);
  --shadow-lg: 0 20px 50px rgba(12, 74, 110, 0.18);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 80px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(12, 74, 110, 0.08);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--primary);
}

.logo__img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  object-fit: contain;
  flex-shrink: 0;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: var(--transition);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--primary);
}

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

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary), var(--water));
  color: white;
  box-shadow: 0 4px 16px rgba(6, 182, 212, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.45);
}

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

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

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

.btn--white:hover {
  background: var(--surface);
  transform: translateY(-2px);
}

.btn--lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 40%, #0369a1 100%);
}

.hero__bg {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  background-image:
    radial-gradient(circle at 20% 80%, var(--accent) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, var(--accent-light) 0%, transparent 40%);
}

.hero__waves {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
}

.hero__content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding: 60px 0 100px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--accent-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: white;
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero__title span {
  background: linear-gradient(90deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  max-width: 520px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero__stats {
  display: flex;
  gap: 40px;
}

.hero__stat strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: white;
}

.hero__stat span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.hero__visual {
  position: relative;
}

.hero__card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 24px;
  padding: 32px;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero__pool-svg {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.hero__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}

.hero__feature {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
}

.hero__feature svg {
  flex-shrink: 0;
  color: var(--accent-light);
}

/* Sections */
.section {
  padding: 100px 0;
}

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

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section__label {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.section__title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}

.section__desc {
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.card {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid rgba(12, 74, 110, 0.06);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.card__icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--surface-2), var(--surface));
  border-radius: 14px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  color: var(--water);
}

.card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--water);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.card__text {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.card__link {
  color: var(--water);
  font-weight: 700;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.card__link:hover {
  gap: 10px;
}

/* Services */
.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), var(--water));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover::before {
  opacity: 1;
}

/* Products */
.product-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.product-cat {
  background: white;
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: default;
}

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

.product-cat__icon {
  margin-bottom: 12px;
  display: grid;
  place-items: center;
}

.product-cat__icon svg {
  width: 40px;
  height: 40px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.product-cat__name {
  font-weight: 700;
  font-size: 0.95rem;
}

/* CTA Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--primary) 0%, #0284c7 50%, var(--accent) 100%);
  border-radius: 24px;
  padding: 60px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-banner__title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
}

.cta-banner__text {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.05rem;
}

/* Why Us */
.features-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.feature-item {
  text-align: center;
  padding: 24px;
}

.feature-item__num {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent), var(--water));
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  margin: 0 auto 16px;
}

.feature-item__title {
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

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

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: 0 2px 12px rgba(12, 74, 110, 0.06);
  overflow: hidden;
}

.faq-item__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  background: none;
  border: none;
  font-family: inherit;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.faq-item__question:hover {
  background: var(--surface);
}

.faq-item__icon {
  font-size: 1.2rem;
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item.open .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.open .faq-item__answer {
  max-height: 300px;
}

.faq-item__answer p {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-info__item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  background: var(--surface-2);
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--water);
  flex-shrink: 0;
}

.contact-info__icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--water);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-info__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-info__value {
  font-weight: 700;
  color: var(--primary);
}

.contact-form {
  background: white;
  border-radius: var(--radius);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--surface-2);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background: var(--surface);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: white;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* Page Hero */
.page-hero {
  padding: calc(var(--header-h) + 60px) 0 60px;
  background: linear-gradient(160deg, var(--primary-dark), var(--primary));
  color: white;
  text-align: center;
}

.page-hero__title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 12px;
}

.page-hero__desc {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.6);
}

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

.breadcrumb a:hover {
  text-decoration: underline;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--surface-2), var(--surface));
  border-radius: 24px;
  padding: 0;
  aspect-ratio: 4/3;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__photo {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero__photo img {
  width: 100%;
  height: auto;
  display: block;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.gallery__item {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  aspect-ratio: 4/3;
  position: relative;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.gallery__item:hover img {
  transform: scale(1.04);
}

.gallery__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px;
  background: linear-gradient(transparent, rgba(8, 47, 73, 0.85));
  color: white;
  font-size: 0.85rem;
  font-weight: 600;
}

.about-content h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 20px;
}

.about-content p {
  color: var(--text-muted);
  margin-bottom: 16px;
}

.about-list {
  margin-top: 24px;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-weight: 600;
  color: var(--primary);
}

.about-list li::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.process-step {
  text-align: center;
  padding: 32px 20px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--water));
  color: white;
  font-weight: 800;
  border-radius: 50%;
  margin: 0 auto 16px;
}

.process-step h3 {
  font-size: 1.05rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */
.footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 80px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer__brand p {
  margin-top: 16px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer__title {
  color: white;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 20px;
}

.footer__links li {
  margin-bottom: 10px;
}

.footer__links a {
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer__links a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer__contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.footer__contact svg {
  width: 18px;
  height: 18px;
  stroke: var(--accent-light);
  fill: none;
  stroke-width: 2;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.9rem;
}

.footer__social {
  display: flex;
  gap: 12px;
}

.footer__social a {
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  display: grid;
  place-items: center;
  transition: var(--transition);
}

.footer__social svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.footer__social a:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

/* WhatsApp Float */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: grid;
  place-items: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
  transition: var(--transition);
  color: white;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
}

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__desc { margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .hero__stats { justify-content: center; }
  .hero__visual { display: none; }

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

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

  .cta-banner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .menu-toggle { display: flex; }
  .header__cta .btn--outline { display: none; }

  .section { padding: 70px 0; }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .cta-banner {
    padding: 40px 24px;
  }
}