/* ==========================================================================
   TURELSAN NET - KESİNTİSİZ GÜÇ SİSTEMLERİ & ENEL UPS
   Ultra Modern Kurumsal CSS Tasarım Sistemi
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@500;600;700;800;900&display=swap');

:root {
  /* Renk Paleti */
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-dark: #075985;
  --primary-light: #e0f2fe;
  --secondary: #0f172a;
  --secondary-light: #1e293b;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --success: #10b981;
  --danger: #ef4444;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-400: #94a3b8;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --white: #ffffff;

  /* Tipografi */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;

  /* Gölgeler & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glow: 0 0 25px -5px rgba(2, 132, 199, 0.4);

  /* Konteyner & Geçişler */
  --container-width: 1280px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--white);
  color: var(--slate-700);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* Tipografi Yardımcıları */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--slate-900);
  line-height: 1.25;
  font-weight: 700;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.section-tag.accent {
  background: #fef3c7;
  color: #92400e;
}

.section-tag.dark {
  background: rgba(255, 255, 255, 0.1);
  color: #38bdf8;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--slate-900);
}

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

.section-subtitle {
  font-size: 1.125rem;
  color: var(--slate-500);
  max-width: 680px;
  margin-bottom: 3rem;
}

.section-subtitle.white {
  color: var(--slate-300);
}

.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   HEADER & TOPBAR & NAVIGATION
   ========================================================================== */

/* Topbar */
.topbar {
  background-color: var(--slate-900);
  color: var(--slate-300);
  font-size: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

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

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.topbar-item:hover {
  color: var(--white);
}

.topbar-badge {
  background: #ef4444;
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.75rem;
  animation: pulse-badge 2s infinite;
}

/* Main Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
  padding: 0.25rem 0;
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  height: 48px;
}

.logo-img {
  height: 44px;
  width: auto;
}

/* Nav Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--slate-700);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-md);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 3px;
  background: var(--primary);
  border-radius: 3px 3px 0 0;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px 0 rgba(2, 132, 199, 0.39);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.45);
}

.btn-secondary {
  background: var(--slate-800);
  color: var(--white);
}

.btn-secondary:hover {
  background: var(--slate-900);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent);
  color: var(--slate-900);
  font-weight: 700;
}

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

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--slate-300);
  color: var(--slate-700);
}

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

.btn-outline-white {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  color: var(--white);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--white);
}

.btn-whatsapp {
  background: #25d366;
  color: #fff;
  font-weight: 700;
}

.btn-whatsapp:hover {
  background: #128c7e;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

/* Mobil Menü Butonu */
.mobile-toggle {
  display: none;
  background: none;
  font-size: 1.5rem;
  color: var(--slate-800);
  cursor: pointer;
  padding: 0.5rem;
}

/* ==========================================================================
   HERO BANNER (ANA SAYFA)
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #09121d 0%, #0f1f33 50%, #0c2b48 100%);
  color: var(--white);
  padding: 5rem 0 6rem;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: -10%;
  left: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.25) 0%, rgba(2, 132, 199, 0) 70%);
  border-radius: 50%;
  filter: blur(50px);
  pointer-events: none;
}

.hero-glow-2 {
  position: absolute;
  bottom: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, rgba(245, 158, 11, 0) 70%);
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.hero-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.7;
  pointer-events: none;
}

.hero-content-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-title span.highlight {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--slate-300);
  line-height: 1.7;
  margin-bottom: 2.25rem;
  max-width: 600px;
}

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

.hero-features-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 2rem;
}

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

.hero-feature-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(2, 132, 199, 0.2);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.hero-feature-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--white);
}

.hero-feature-text span {
  font-size: 0.8rem;
  color: var(--slate-400);
}

/* Hero Sağ Kart / Görsel */
.hero-visual-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  position: relative;
}

.hero-visual-badge {
  position: absolute;
  top: -15px;
  right: 25px;
  background: var(--accent);
  color: var(--slate-900);
  font-weight: 800;
  font-size: 0.8rem;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
}

.hero-product-showcase {
  text-align: center;
}

.hero-product-image {
  height: 240px;
  object-fit: contain;
  margin: 0 auto 1.5rem;
  filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.4));
  transition: transform 0.4s ease;
}

.hero-visual-card:hover .hero-product-image {
  transform: translateY(-8px) scale(1.03);
}

.hero-product-meta h3 {
  color: var(--white);
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.hero-product-meta p {
  color: #38bdf8;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.hero-stats-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.hero-mini-stat {
  text-align: center;
}

.hero-mini-stat strong {
  display: block;
  font-size: 1.15rem;
  color: var(--white);
  font-family: var(--font-heading);
}

.hero-mini-stat span {
  font-size: 0.75rem;
  color: var(--slate-400);
}

/* ==========================================================================
   HIZLI UPS SEÇİM SİHİRBAZI (BANNER ALTI)
   ========================================================================== */
.quick-finder-bar {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  padding: 2rem 2.5rem;
  margin-top: -3.5rem;
  position: relative;
  z-index: 10;
  border: 1px solid var(--slate-200);
}

.quick-finder-form {
  display: grid;
  grid-template-columns: repeat(4, 1fr) auto;
  gap: 1.25rem;
  align-items: flex-end;
}

.finder-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--slate-800);
  margin-bottom: 0.5rem;
}

.finder-field select, .finder-field input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--slate-200);
  background: var(--slate-50);
  color: var(--slate-800);
  font-size: 0.95rem;
  transition: var(--transition);
}

.finder-field select:focus, .finder-field input:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

/* ==========================================================================
   KATEGORİLER & SEKTÖRLER
   ========================================================================== */
.section {
  padding: 5.5rem 0;
}

.section-bg-slate {
  background-color: var(--slate-50);
}

.section-bg-dark {
  background-color: var(--slate-900);
  color: var(--white);
}

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

.category-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.category-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
}

.category-card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

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

.category-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.category-card p {
  color: var(--slate-500);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: var(--primary);
}

.category-card-link:hover {
  color: var(--primary-dark);
  gap: 0.75rem;
}

/* ==========================================================================
   ÜRÜN KARTLARI (PRODUCT CARDS)
   ========================================================================== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  border-color: rgba(2, 132, 199, 0.4);
  box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.12);
}

.product-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--primary);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  z-index: 2;
}

.product-card-badge.power {
  left: auto;
  right: 1rem;
  background: var(--slate-900);
  color: #38bdf8;
}

.product-card-image-wrap {
  background: radial-gradient(circle, #f8fafc 0%, #f1f5f9 100%);
  padding: 2.5rem 2rem;
  text-align: center;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.product-card-img {
  max-height: 180px;
  width: auto;
  object-fit: contain;
  margin: 0 auto;
  transition: transform 0.35s ease;
  filter: drop-shadow(0 8px 12px rgba(0, 0, 0, 0.08));
}

.product-card:hover .product-card-img {
  transform: scale(1.08);
}

.product-card-body {
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-card-category {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.4rem;
  letter-spacing: 0.03em;
}

.product-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.product-card-desc {
  font-size: 0.875rem;
  color: var(--slate-500);
  margin-bottom: 1.25rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.product-card-specs {
  border-top: 1px solid var(--slate-100);
  padding-top: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--slate-600);
}

.product-card-specs span strong {
  color: var(--slate-900);
}

.product-card-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

/* ==========================================================================
   HİZMETLER (SERVICES)
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 2.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
}

.service-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: var(--slate-900);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.service-card:hover .service-icon-box {
  background: var(--primary);
  color: var(--white);
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--slate-500);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.service-list {
  margin-bottom: 1.5rem;
}

.service-list li {
  font-size: 0.825rem;
  color: var(--slate-600);
  margin-bottom: 0.4rem;
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
}

.service-list li::before {
  content: '✓';
  color: var(--success);
  font-weight: 800;
}

/* ==========================================================================
   NEDEN TURELSAN & ENEL BÖLÜMÜ
   ========================================================================== */
.why-section {
  position: relative;
  background: linear-gradient(135deg, #0a131e 0%, #0f172a 100%);
  color: var(--white);
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.why-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.why-mini-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  transition: var(--transition);
}

.why-mini-card:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(2, 132, 199, 0.4);
  transform: translateY(-4px);
}

.why-icon {
  font-size: 2rem;
  color: #38bdf8;
  margin-bottom: 1rem;
}

.why-mini-card h4 {
  color: var(--white);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.why-mini-card p {
  color: var(--slate-400);
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ==========================================================================
   UPS GÜÇ HESAPLAMA SİHİRBAZI TASARIMI
   ========================================================================== */
.calculator-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--slate-200);
  overflow: hidden;
}

.calculator-header {
  background: linear-gradient(135deg, var(--slate-900) 0%, #1e3a5f 100%);
  color: var(--white);
  padding: 2.5rem 2.5rem;
}

.calculator-body {
  padding: 2.5rem;
}

.devices-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.device-row {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1.5fr 1fr;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.25rem;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.device-row:hover {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.device-info strong {
  display: block;
  font-size: 0.95rem;
  color: var(--slate-900);
}

.device-info span {
  font-size: 0.8rem;
  color: var(--slate-500);
}

.device-qty-ctrl {
  display: inline-flex;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.qty-btn {
  background: none;
  width: 32px;
  height: 32px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--slate-700);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.qty-btn:hover {
  background: var(--slate-100);
  color: var(--primary);
}

.qty-input {
  width: 44px;
  text-align: center;
  font-weight: 700;
  color: var(--slate-900);
}

/* Hesaplama Sonuç Paneli */
.calc-result-panel {
  background: linear-gradient(135deg, var(--slate-900) 0%, #0c2b48 100%);
  color: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  text-align: center;
  position: sticky;
  top: 100px;
  box-shadow: var(--shadow-xl);
}

.calc-gauge {
  margin: 1.5rem 0;
}

.calc-kva-val {
  font-size: 3.5rem;
  font-weight: 900;
  font-family: var(--font-heading);
  color: #38bdf8;
  line-height: 1;
  text-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}

.calc-kva-unit {
  font-size: 1.5rem;
  color: var(--white);
}

.calc-recommended-product {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin: 1.5rem 0;
  text-align: left;
}

/* ==========================================================================
   ÜRÜN DETAY SAYFASI
   ========================================================================== */
.product-detail-hero {
  background: var(--slate-50);
  padding: 3rem 0;
  border-bottom: 1px solid var(--slate-200);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3.5rem;
  align-items: start;
}

.product-gallery {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 100px;
}

.product-main-img {
  max-height: 380px;
  width: auto;
  margin: 0 auto;
  filter: drop-shadow(0 15px 25px rgba(0, 0, 0, 0.1));
}

.specs-badge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.spec-badge-box {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 1rem 0.75rem;
  text-align: center;
}

.spec-badge-box span {
  display: block;
  font-size: 0.75rem;
  color: var(--slate-500);
  text-transform: uppercase;
  font-weight: 700;
}

.spec-badge-box strong {
  display: block;
  font-size: 1.1rem;
  color: var(--slate-900);
  margin-top: 0.25rem;
}

.feature-check-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1.5rem;
  margin: 1.5rem 0 2.5rem;
}

.feature-check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--slate-700);
}

.feature-check-item::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-weight: 800;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   İLETİŞİM FORMU VE KARTLARI
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3.5rem;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-info-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 1.75rem 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  transition: var(--transition);
}

.contact-info-card:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact-info-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-lg);
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

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

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--slate-800);
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--slate-300);
  background: var(--white);
  color: var(--slate-800);
  font-size: 0.95rem;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

textarea.form-control {
  resize: vertical;
  min-height: 130px;
}

/* ==========================================================================
   FOOTER & FLOATING CTA
   ========================================================================== */
.footer {
  background-color: #0b131e;
  color: var(--slate-300);
  padding-top: 5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.15rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 36px;
  height: 2.5px;
  background: var(--primary);
  border-radius: 2px;
}

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

.footer-links a {
  color: var(--slate-400);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem 0;
  font-size: 0.85rem;
  color: var(--slate-500);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Floating WhatsApp & Acil Destek Butonları */
.floating-actions {
  position: fixed;
  bottom: 25px;
  right: 25px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 9999;
}

.floating-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  transition: var(--transition);
  text-decoration: none;
}

.floating-btn.whatsapp {
  background: #25d366;
}

.floating-btn.whatsapp:hover {
  background: #128c7e;
  transform: scale(1.05);
}

.floating-btn.call {
  background: var(--primary);
}

.floating-btn.call:hover {
  background: var(--primary-hover);
  transform: scale(1.05);
}

.floating-icon {
  font-size: 1.25rem;
}

/* Modal Popup */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop.active {
  display: flex;
}

.modal-window {
  background: var(--white);
  border-radius: var(--radius-xl);
  max-width: 540px;
  width: 100%;
  padding: 2.5rem 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
  position: relative;
  animation: modal-enter 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--slate-100);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--slate-600);
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  background: var(--slate-200);
  color: var(--slate-900);
}

/* ==========================================================================
   RESPONSIVE UYUMLULUK (MEDIA QUERIES)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-content-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .products-grid, .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .why-grid, .product-detail-grid, .contact-grid {
    grid-template-columns: 1fr;
  }
  .quick-finder-form {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .topbar {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: var(--shadow-xl);
    border-bottom: 1px solid var(--slate-200);
    display: none;
  }
  .nav-menu.mobile-active {
    display: flex;
  }
  .hero-title {
    font-size: 2.25rem;
  }
  .products-grid, .categories-grid, .services-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .quick-finder-form {
    grid-template-columns: 1fr;
  }
  .hero-features-list {
    grid-template-columns: 1fr;
  }
  .specs-badge-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .device-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
  .floating-btn span {
    display: none;
  }
  .floating-btn {
    padding: 0.85rem;
    border-radius: 50%;
  }
}