/**
 * SolarAlu — Saf CSS Mimarisi (main.css)
 * rules.md Kural 8 & 49: Sıfır Harici CDN, %100 Yerel Stil
 */

:root {
  --primary: #0284c7;        /* Güneş Mavisi */
  --primary-dark: #0369a1;
  --primary-light: #e0f2fe;
  --accent: #f59e0b;         /* Güneş Sarısı / Amber */
  --accent-hover: #d97706;
  
  --dark-bg: #090d16;        /* Gece Koyu Zemin */
  --dark-surface: #0f172a;   /* Koyu Kart */
  --dark-border: #1e293b;
  
  --bg-main: #f8fafc;        /* Açık Zemin */
  --bg-card: #ffffff;
  --text-main: #0f172a;      /* Ana Metin */
  --text-muted: #64748b;     /* İkincil Metin */
  --border: #e2e8f0;
  
  --whatsapp: #25d366;
  --whatsapp-dark: #128c7e;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 100%;
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* Konteyner */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* Tipografi */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

h1 { font-size: 2.25rem; margin-bottom: 1rem; }
h2 { font-size: 1.75rem; margin-bottom: 0.85rem; }
h3 { font-size: 1.35rem; margin-bottom: 0.65rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* Butonlar */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
  line-height: 1;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}
.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow-md);
  color: #ffffff;
}

.btn-accent {
  background-color: var(--accent);
  color: #ffffff;
}
.btn-accent:hover {
  background-color: var(--accent-hover);
  box-shadow: var(--shadow-md);
  color: #ffffff;
}

.btn-whatsapp {
  background-color: var(--whatsapp);
  color: #ffffff;
}
.btn-whatsapp:hover {
  background-color: var(--whatsapp-dark);
  color: #ffffff;
}

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

.btn-sm { padding: 8px 16px; font-size: 0.875rem; }
.btn-lg { padding: 16px 32px; font-size: 1.125rem; }

/* ==========================================================================
   Header & Navbar (Sleek, Single-Line, Grouped Navigation)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(9, 13, 22, 0.90);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.4);
  color: #ffffff;
  transition: all 0.25s ease;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 16px;
  flex-wrap: nowrap;
}

/* Logo */
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), filter 0.25s ease;
}

.logo-wrap:hover .logo-icon-box {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 12px rgba(56, 189, 248, 0.45));
}

.logo-icon-svg {
  display: block;
  border-radius: 11px;
}

.logo-text-group {
  display: flex;
  flex-direction: column;
}

.logo-text-accent {
  color: #38bdf8;
  font-weight: 800;
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.logo-sub {
  font-size: 0.72rem;
  color: #94a3b8;
  display: block;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* Desktop Nav (Strictly Single Row) */
.nav-desktop {
  display: flex;
  align-items: center;
  flex-shrink: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: nowrap;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #94a3b8;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 8px;
  white-space: nowrap;
  transition: all 0.18s ease;
  position: relative;
  text-decoration: none;
}

.nav-link:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.06);
}

.nav-link.active {
  color: #ffffff;
  background-color: rgba(2, 132, 199, 0.14);
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.25);
}

.dropdown-chevron {
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
  opacity: 0.6;
}

.nav-item.has-dropdown:hover > .nav-link,
.nav-item.has-dropdown:focus-within > .nav-link {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.06);
}

.nav-item.has-dropdown:hover .dropdown-chevron,
.nav-item.has-dropdown:focus-within .dropdown-chevron {
  transform: rotate(180deg);
  opacity: 1;
  color: var(--primary);
}

/* Dropdown Bridge (Keeps hover state active when cursor moves down) */
.nav-item.has-dropdown::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -10px;
  height: 12px;
}

/* Floating Dropdown Card */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 330px;
  background: #0b1120;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  padding: 10px;
  box-shadow: 0 20px 45px -8px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(255, 255, 255, 0.06);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.2s;
  pointer-events: none;
  z-index: 1050;
}

.dropdown-menu-wide {
  min-width: 370px;
}

.dropdown-menu-sm {
  min-width: 290px;
}

.nav-item.has-dropdown:hover .dropdown-menu,
.nav-item.has-dropdown:focus-within .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown-header {
  font-size: 0.68rem;
  font-weight: 800;
  color: #64748b;
  letter-spacing: 0.08em;
  padding: 6px 10px 8px 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.dropdown-grid {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 10px;
  border-radius: 9px;
  text-decoration: none;
  transition: all 0.15s ease;
}

.dropdown-item:hover,
.dropdown-item.is-current {
  background-color: rgba(255, 255, 255, 0.06);
  transform: translateX(2px);
}

.dropdown-icon-box {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.dropdown-item:hover .dropdown-icon-box {
  transform: scale(1.05);
}

.text-primary {
  color: #38bdf8;
  background: rgba(14, 165, 233, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.text-amber, .text-accent {
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(251, 191, 36, 0.25);
}

.text-emerald {
  color: #34d399;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.25);
}

.text-cyan {
  color: #22d3ee;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.25);
}

.text-indigo {
  color: #a5b4fc;
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(165, 180, 252, 0.25);
}

.dropdown-item-body {
  flex: 1;
  min-width: 0;
}

.dropdown-item-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: #f8fafc;
  line-height: 1.25;
  display: flex;
  align-items: center;
  gap: 6px;
}

.dropdown-item:hover .dropdown-item-title {
  color: #38bdf8;
}

.dropdown-item-desc {
  font-size: 0.76rem;
  color: #94a3b8;
  margin-top: 2px;
  line-height: 1.35;
  white-space: normal;
}

/* Mini Badges */
.badge-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.62rem;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(14, 165, 233, 0.18);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
  line-height: 1.4;
}

.badge-accent {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.35);
}

.badge-cyan {
  background: rgba(6, 182, 212, 0.2);
  color: #22d3ee;
  border-color: rgba(34, 211, 238, 0.35);
}

.badge-neutral {
  background: rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  border-color: rgba(255, 255, 255, 0.15);
}

/* Header CTA & Button */
.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.84rem;
  letter-spacing: 0.02em;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid rgba(56, 189, 248, 0.35);
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.35);
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.header-cta-btn:hover {
  background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.55);
  transform: translateY(-1px);
  color: #ffffff;
}

.header-cta-icon {
  display: flex;
  align-items: center;
  color: #ffffff;
}

.cta-text-short { display: none; }
.cta-text-mini { display: none; }
.cta-text-full { display: inline; }

.hamburger-btn {
  display: none;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #ffffff;
  cursor: pointer;
  padding: 7px;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.hamburger-btn:hover {
  background: rgba(255, 255, 255, 0.12);
}

/* Mobil Off-Canvas Menü (rules.md Kural 36) */
.offcanvas-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.offcanvas-overlay.active {
  opacity: 1;
  visibility: visible;
}

.offcanvas-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background-color: var(--dark-surface);
  color: #ffffff;
  z-index: 1001;
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: -5px 0 25px rgba(0,0,0,0.5);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  overflow-y: auto;
}

.offcanvas-panel.active {
  transform: translateX(0);
}

.offcanvas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--dark-border);
}

.offcanvas-close {
  background: transparent;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  padding: 6px;
}
.offcanvas-close:hover { color: #ffffff; }

.offcanvas-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.offcanvas-group-title {
  font-size: 0.70rem;
  font-weight: 800;
  color: #64748b;
  letter-spacing: 0.08em;
  padding: 0 4px 6px 4px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  text-transform: uppercase;
}

.offcanvas-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.offcanvas-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #e2e8f0;
  padding: 8px 10px;
  border-radius: 8px;
  transition: all 0.15s ease;
  text-decoration: none;
}

.offcanvas-link:hover,
.offcanvas-link.highlight {
  background-color: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.offcanvas-link-text {
  flex: 1;
}

.offcanvas-icon-box {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Breadcrumb (rules.md Kural 15) */
.breadcrumb-wrap {
  background-color: #f1f5f9;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.breadcrumb-item a {
  color: var(--text-muted);
}
.breadcrumb-item a:hover {
  color: var(--primary);
}
.breadcrumb-separator {
  color: #cbd5e1;
}
.breadcrumb-item.active {
  color: var(--text-main);
  font-weight: 600;
}

/* Hero Bölümü */
.hero-section {
  position: relative;
  background-color: #080c15;
  color: #ffffff;
  padding: 75px 0 85px 0;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(135deg, rgba(8, 12, 21, 0.94) 0%, rgba(15, 23, 42, 0.84) 55%, rgba(8, 12, 21, 0.92) 100%),
    url('../images/hero-bg.webp');
  background-size: cover;
  background-position: center right;
  background-repeat: no-repeat;
  pointer-events: none;
  z-index: 1;
}

.hero-section::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -15%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.22) 0%, rgba(2, 132, 199, 0) 70%);
  pointer-events: none;
  z-index: 2;
}

.hero-section .container {
  position: relative;
  z-index: 3;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(2, 132, 199, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #38bdf8;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-title {
  color: #ffffff;
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

.hero-lead {
  font-size: 1.15rem;
  color: #cbd5e1;
  margin-bottom: 32px;
  line-height: 1.6;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-card {
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

/* Hero Altı Hızlı Güvence Rozetleri (B2B Pazarlama) */
.hero-trust-bar {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.hero-trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-trust-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(2, 132, 199, 0.2);
  border: 1px solid rgba(56, 189, 248, 0.35);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-trust-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.25;
}

.hero-trust-sub {
  font-size: 0.77rem;
  color: #94a3b8;
  line-height: 1.35;
}

@media (max-width: 992px) {
  .hero-trust-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (max-width: 540px) {
  .hero-trust-bar {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

/* Sektörel Çözüm Segmentasyonu Kartları */
.solutions-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

@media (max-width: 1100px) {
  .solutions-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .solutions-grid-4 { grid-template-columns: 1fr; }
}

.solution-card-home {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  position: relative;
}

.solution-card-home:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 12px 28px -4px rgba(2, 132, 199, 0.14);
}

.sol-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.sol-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
  color: #0284c7;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.solution-card-home:hover .sol-icon-box {
  transform: scale(1.06);
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}

.sol-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: #0369a1;
  background: #f0f9ff;
  border: 1px solid #e0f2fe;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sol-title {
  font-size: 1.125rem;
  font-weight: 800;
  line-height: 1.35;
  color: #0f172a;
  margin-bottom: 8px;
}

.sol-title a {
  color: inherit;
  text-decoration: none;
}

.sol-title a:hover {
  color: #0284c7;
}

.sol-desc {
  font-size: 0.85rem;
  color: #64748b;
  line-height: 1.55;
  margin-bottom: 16px;
  flex-grow: 1;
}

.sol-features {
  list-style: none;
  padding: 0;
  margin: 0 0 18px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.82rem;
  color: #334155;
}

.sol-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.sol-feature-item svg {
  color: #0284c7;
  flex-shrink: 0;
  margin-top: 3px;
}

.sol-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  color: #0284c7;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
  margin-top: auto;
}

.sol-link:hover {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
}

/* Referans Proje Kartları (Ana Sayfa) */
.home-projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 28px;
}

@media (max-width: 992px) {
  .home-projects-grid {
    grid-template-columns: 1fr;
  }
}

.home-project-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.home-project-card:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 12px 24px -4px rgba(2, 132, 199, 0.12);
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
}

/* Hızlı Bilgi Kartı (rules.md Kural 25) */
.quick-info-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-sm);
}

.quick-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 20px;
}

.quick-info-item {
  display: flex;
  flex-direction: column;
}

.quick-info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
  margin-bottom: 4px;
}

.quick-info-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

/* Kartlar ve Izgaralar */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 24px;
  margin-bottom: 40px;
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.card-img-wrap {
  height: 200px;
  background-color: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  position: relative;
  transition: background-color 0.2s ease;
}

.card-img-wrap:hover {
  background-color: #f1f5f9;
}

.card-img-wrap img {
  max-height: 160px;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.card:hover .card-img-wrap img,
.card-img-wrap:hover img {
  transform: scale(1.06);
}

.card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.solution-title {
  font-size: clamp(1.35rem, 1.75vw, 1.8rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.card-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
  line-height: 1.35;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ========================================================
   GELİŞMİŞ KATALOG KARTLARI (Kusursuz Hizalama & Temiz Görünüm)
   ======================================================== */
.catalog-product-card {
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  overflow: hidden;
}

.catalog-product-card:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.12);
}

.catalog-product-card .card-body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  padding: 18px 20px 20px 20px;
}

.catalog-product-card .card-tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.catalog-product-card .card-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

.catalog-product-card .card-title a {
  color: #0f172a;
  text-decoration: none;
  transition: color 0.15s ease;
}

.catalog-product-card .card-title a:hover {
  color: var(--primary);
}

.catalog-product-card .card-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 3.8em;
  flex-grow: 1;
}

/* 2 Kademeli Kusursuz Kart Alt Alanı */
.card-pricing-block {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid #f1f5f9;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card-price-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.card-price-val {
  color: var(--primary);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.2;
  display: flex;
  align-items: baseline;
  gap: 4px;
  white-space: nowrap;
}

.card-price-unit {
  font-size: 0.78rem;
  color: #64748b;
  font-weight: 600;
  white-space: nowrap;
}

.card-price-try {
  font-size: 0.76rem;
  color: #64748b;
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 2px;
}

.card-spec-pill {
  font-size: 0.75rem;
  font-weight: 700;
  color: #334155;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 4px 10px;
  white-space: nowrap;
  letter-spacing: -0.2px;
}

.card-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.btn-card-add {
  padding: 8px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 8px;
  white-space: nowrap;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #334155;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-card-add:hover {
  background: #f0f9ff;
  border-color: #bae6fd;
  color: var(--primary);
}

.btn-card-view {
  padding: 8px 10px;
  font-size: 0.82rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: 8px;
  white-space: nowrap;
  background: var(--primary);
  border: 1px solid var(--primary);
  color: #ffffff;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-card-view:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
  color: #ffffff;
}

/* ========================================================
   PREMIUM MONTAJ SİSTEMİ KARTLARI (System Cards)
   ======================================================== */
.systems-grid-8 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
  margin-bottom: 36px;
}

@media (max-width: 1100px) {
  .systems-grid-8 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .systems-grid-8 {
    grid-template-columns: minmax(0, 1fr);
  }
}

.system-card-v2 {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  padding: 22px 20px;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.system-card-v2:hover {
  transform: translateY(-4px);
  border-color: #93c5fd;
  box-shadow: 0 14px 28px -6px rgba(2, 132, 199, 0.14), 0 4px 10px rgba(0, 0, 0, 0.03);
}

.system-card-v2 .sys-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.system-card-v2 .sys-icon-box {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 1px solid #bae6fd;
  color: #0284c7;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.system-card-v2:hover .sys-icon-box {
  transform: scale(1.06);
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}

.system-card-v2 .sys-badge {
  font-family: var(--font-mono, monospace);
  font-size: 0.725rem;
  font-weight: 700;
  color: #0369a1;
  background: #f0f9ff;
  border: 1px solid #e0f2fe;
  padding: 3px 8px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.system-card-v2 .sys-title {
  font-size: 1.125rem;
  font-weight: 800;
  line-height: 1.35;
  color: #0f172a;
  margin-bottom: 6px;
}

.system-card-v2 .sys-title a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

.system-card-v2:hover .sys-title a {
  color: #0284c7;
}

.system-card-v2 .sys-roof-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #475569;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 12px;
  width: fit-content;
}

.system-card-v2 .sys-roof-tag .dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #0284c7;
}

.system-card-v2 .sys-desc {
  font-size: 0.85rem;
  color: #64748b;
  line-height: 1.5;
  margin-bottom: 14px;
  flex-grow: 1;
}

.system-card-v2 .sys-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.system-card-v2 .sys-spec-chip {
  font-size: 0.725rem;
  font-weight: 600;
  color: #334155;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  padding: 3px 8px;
  border-radius: 6px;
  white-space: nowrap;
}

.system-card-v2:hover .sys-spec-chip {
  border-color: #cbd5e1;
  background: #ffffff;
}

.system-card-v2 .sys-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  color: #0284c7;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
  margin-top: auto;
}

.system-card-v2 .sys-btn svg {
  transition: transform 0.2s ease;
}

.system-card-v2:hover .sys-btn {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.25);
}

.system-card-v2:hover .sys-btn svg {
  transform: translateX(4px);
}

/* Teknik Veri Tabloları & Genel Tablo Mimarisi */
.tech-table-wrap,
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 20px 0 28px 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background: #ffffff;
}

.table,
.tech-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 0.90rem;
  text-align: left;
}

.table th,
.tech-table th {
  background-color: #f1f5f9;
  color: var(--text-main);
  font-weight: 700;
  padding: 13px 16px;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.table td,
.tech-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
  font-size: 0.88rem;
  line-height: 1.5;
}

.table tr:last-child td,
.tech-table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td,
.tech-table tr:hover td {
  background-color: #f8fafc;
}

/* Kart Genel Responsive Dolgu Sınıfı */
.card-padded {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}

@media (max-width: 640px) {
  .card-padded {
    padding: 20px 14px;
    margin-bottom: 24px;
  }
}

/* Yasal Sayfalar Responsive İki Kolon */
.legal-layout-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  margin-top: 20px;
}
@media (max-width: 860px) {
  .legal-layout-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* SSS Akordiyon Bölümü (rules.md Kural 12: Min 5 SSS) */
.faq-section {
  padding: 60px 0;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.faq-list {
  max-width: 860px;
  margin: 30px auto 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-main);
  transition: border-color 0.2s ease;
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.faq-arrow {
  transition: transform 0.25s ease;
  flex-shrink: 0;
  color: var(--primary);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 24px;
  color: #334155;
  font-size: 0.95rem;
  line-height: 1.6;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 20px 24px;
}

/* CTA Bölümü */
.cta-banner {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 48px;
  text-align: center;
  margin: 50px 0;
  box-shadow: var(--shadow-xl);
}

.cta-banner h2 {
  color: #ffffff;
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.cta-banner p {
  color: #e0f2fe;
  font-size: 1.15rem;
  max-width: 680px;
  margin: 0 auto 28px auto;
}

/* Footer (rules.md Kural 4: Sosyal Medya İkonu KESİNLİKLE YOK) */
.site-footer {
  background: linear-gradient(180deg, #0b1322 0%, #050810 100%);
  color: #94a3b8;
  border-top: 1px solid rgba(56, 189, 248, 0.2);
  position: relative;
  padding: 40px 0 30px 0;
  margin-top: auto;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 85%;
  max-width: 1240px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56, 189, 248, 0.7), rgba(245, 158, 11, 0.7), transparent);
  pointer-events: none;
}

/* 1. B2B Kalite ve Güvence Şeridi (Trust Strip) */
.footer-trust-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  padding-bottom: 30px;
  margin-bottom: 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-trust-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  transition: all 0.3s ease;
}

.footer-trust-item:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(56, 189, 248, 0.25);
  transform: translateY(-2px);
}

.footer-trust-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(2, 132, 199, 0.15);
  border: 1px solid rgba(56, 189, 248, 0.3);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.footer-trust-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.3;
  margin-bottom: 2px;
}

.footer-trust-desc {
  font-size: 0.72rem;
  color: #94a3b8;
  line-height: 1.35;
}

/* 2. Beş Kolonlu Footer Grid */
.footer-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.95fr 1.05fr 1.25fr 1.15fr;
  gap: 28px;
  margin-bottom: 40px;
}

/* Menü Başlıkları: KESİNLİKLE TEK SATIR, Şık Çizgili & Net */
.footer-col-title,
.footer-col h4 {
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  white-space: nowrap;
  position: relative;
  padding-bottom: 10px;
  display: block;
}

.footer-col-title::after,
.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}

/* 1. Kolon: Marka & Özellikler */
.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.logo-sub-sig {
  display: block;
  font-size: 0.72rem;
  color: #64748b;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.footer-brand-desc {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #94a3b8;
  margin-bottom: 18px;
}

.footer-spec-pills {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-spec-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  color: #cbd5e1;
}

.spec-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Menü Linkleri & İnteraktif Hover */
.footer-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-nav li a {
  color: #94a3b8;
  font-size: 0.88rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.22s ease;
  position: relative;
  text-decoration: none;
}

.footer-nav li a::before {
  content: '›';
  color: #38bdf8;
  font-size: 1.05rem;
  line-height: 1;
  opacity: 0;
  transform: translateX(-4px);
  transition: all 0.22s ease;
}

.footer-nav li a:hover {
  color: #ffffff;
  transform: translateX(4px);
}

.footer-nav li a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.footer-nav-highlight {
  color: #38bdf8 !important;
  font-weight: 700 !important;
  gap: 6px !important;
}

.footer-badge-bim {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 0.5px;
  box-shadow: 0 0 8px rgba(14, 165, 233, 0.4);
}

/* 5. Kolon: İletişim Detayları */
.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  line-height: 1.5;
}

.footer-contact-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: #38bdf8;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-text {
  color: #94a3b8;
}

.footer-contact-label {
  color: #64748b;
  font-size: 0.8rem;
  display: inline-block;
  margin-right: 4px;
}

.footer-contact-text a {
  color: #e2e8f0;
  font-weight: 600;
  transition: color 0.2s ease;
  text-decoration: none;
}

.footer-contact-text a:hover {
  color: #38bdf8;
}

.footer-action-wrap {
  margin-top: 16px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
  text-decoration: none;
}

.footer-action-btn:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
  transform: translateY(-1px);
}

/* Alt Çubuk (Footer Bottom) */
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.85rem;
}

.footer-copy {
  color: #94a3b8;
  font-size: 0.82rem;
}

.footer-copy strong {
  color: #e2e8f0;
}

.footer-bottom-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-legal-links a {
  color: #64748b;
  font-size: 0.80rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-legal-links a:hover {
  color: #cbd5e1;
}

.legal-sep {
  color: #334155;
  font-size: 0.75rem;
}

.footer-credit {
  font-size: 0.78rem;
  color: #64748b;
  display: flex;
  align-items: center;
  gap: 5px;
}

.footer-credit a {
  color: #94a3b8;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}

.footer-credit a:hover {
  color: var(--primary, #0284c7);
}

/* Sol-Alt Sabit Yukarı Çık Butonu (rules.md Kural 37) */
.btn-scroll-top {
  position: fixed;
  bottom: 24px;
  left: 20px;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-full);
  background-color: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  border: 1px solid var(--dark-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 99;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.2s ease;
}

.btn-scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.btn-scroll-top:hover {
  background-color: var(--primary);
  color: #ffffff;
}

/* Sağ-Alt Sabit WhatsApp Butonu (rules.md Kural 38) */
.btn-floating-whatsapp {
  position: fixed;
  bottom: 24px;
  right: 20px;
  width: 54px;
  height: 54px;
  border-radius: var(--radius-full);
  background-color: var(--whatsapp);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99;
  box-shadow: 0 4px 18px rgba(37, 211, 102, 0.45);
  animation: pulse-whatsapp 2s infinite;
  transition: transform 0.2s ease;
}

.btn-floating-whatsapp:hover {
  transform: scale(1.08);
  color: #ffffff;
}

.btn-floating-whatsapp .floating-wa-label {
  position: absolute;
  right: 64px;
  background: #0f172a;
  color: #ffffff;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  box-shadow: 0 4px 14px rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.18);
  opacity: 0;
  transform: translateX(8px);
  transition: all 0.25s ease;
  pointer-events: none;
}

@media (min-width: 900px) {
  .btn-floating-whatsapp .floating-wa-label {
    opacity: 0.95;
    transform: translateX(0);
  }
}

.btn-floating-whatsapp:hover .floating-wa-label {
  opacity: 1;
  transform: translateX(0);
  background: #0284c7;
}

@keyframes pulse-whatsapp {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.6);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}

/* Hesaplayıcı Formu */
.calc-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  margin: 32px 0;
}

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

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

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.925rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--bg-main);
  color: var(--text-main);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  border-color: var(--primary);
  background-color: #ffffff;
}

.calc-results-box {
  background-color: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 24px;
}

/* Mobil Uyumluluk */
@media (max-width: 1080px) {
  .footer-trust-strip {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
  .footer-grid > .footer-col:first-child {
    grid-column: span 2;
  }
  .footer-col-title,
  .footer-col h4 {
    white-space: normal;
  }
}

@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr !important; }
  .calc-grid { grid-template-columns: 1fr !important; }
  .nav-desktop { display: none; }
  .hamburger-btn { display: flex; align-items: center; justify-content: center; }
  .cta-text-full { display: none; }
  .cta-text-short { display: inline; }
  h1 { font-size: 1.85rem; }
  .hero-title { font-size: 2.1rem; }
}

@media (max-width: 768px) {
  .footer-trust-strip {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container { padding-left: 12px; padding-right: 12px; }
  .header-inner { height: 58px; }
  .prod-section-card { padding: 20px 16px; }
  .site-footer {
    padding: 30px 0 24px 0;
  }
  .footer-trust-strip {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-bottom: 20px;
    margin-bottom: 24px;
  }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid > .footer-col:first-child { grid-column: span 1; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .footer-bottom-right {
    align-items: flex-start;
    gap: 10px;
    width: 100%;
  }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .cta-banner { padding: 26px 16px; margin: 32px 0; }
  .cta-banner h2 { font-size: 1.5rem; }
  .btn-floating-whatsapp { bottom: 18px; right: 14px; width: 48px; height: 48px; }
  .btn-scroll-top { bottom: 18px; left: 14px; width: 42px; height: 42px; }
  .cta-text-full { display: none; }
  .cta-text-short { display: inline; }
  .header-cta { gap: 8px; }
  .header-cta-btn {
    padding: 7px 11px;
    font-size: 0.74rem;
    font-weight: 700;
    white-space: nowrap;
  }
  .hamburger-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    padding: 0;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.12);
  }
}

@media (max-width: 480px) {
  .logo-badge { font-size: 0.95rem; padding: 4px 7px; }
  .logo-text { font-size: 1.05rem; }
  .logo-sub { display: none; }
  .logo-icon-box svg, .logo-icon-svg { width: 30px; height: 30px; }
  .header-cta { gap: 5px; }
  .header-cta-btn {
    padding: 6px 8px;
    font-size: 0.68rem;
  }
  .header-bom-btn {
    padding: 6px 8px;
  }
  .hamburger-btn {
    width: 34px;
    height: 34px;
  }
  .grid-cards {
    grid-template-columns: 1fr !important;
    gap: 16px;
  }
}

@media (max-width: 380px) {
  .container { padding-left: 10px; padding-right: 10px; }
  .logo-text { font-size: 0.95rem; }
  .header-cta { gap: 4px; }
  .header-cta-btn {
    padding: 5px 7px;
    font-size: 0.65rem;
  }
  .cta-text-short { display: none !important; }
  .cta-text-mini { display: inline !important; }
  .header-bom-btn {
    padding: 5px 7px;
  }
  .hamburger-btn {
    width: 32px;
    height: 32px;
  }
}

/* ==========================================================================
   B2B PROJE MALZEME LİSTESİ & TEKLİF ÇEKMECESİ STİLLERİ
   ========================================================================== */
.header-bom-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.07);
  color: #e2e8f0;
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  position: relative;
  line-height: 1;
}
.header-bom-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(56, 189, 248, 0.5);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}
.bom-btn-icon-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #38bdf8;
  transition: transform 0.2s ease;
}
.header-bom-btn:hover .bom-btn-icon-wrap {
  transform: scale(1.08);
}
.bom-badge-count {
  position: absolute;
  top: -7px;
  right: -9px;
  background: #0284c7;
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 800;
  min-width: 17px;
  height: 17px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  padding: 0 4px;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.6);
  border: 1.5px solid #0f172a;
}

.bom-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 99998;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.bom-drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.bom-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 440px;
  background: #ffffff;
  z-index: 99999;
  box-shadow: -8px 0 30px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.bom-drawer.active {
  transform: translateX(0);
}

.bom-drawer-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #ffffff;
}

.bom-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 18px 20px;
}

.bom-drawer-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: #ffffff;
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.03);
}

@media (max-width: 768px) {
  .header-bom-btn {
    padding: 7px 10px;
    font-size: 0.75rem;
  }
  .bom-btn-label {
    display: none;
  }
  .bom-drawer {
    max-width: 100%;
  }
}

/* ==========================================================================
   Kategori Gezgini (Hybrid Mobile-First & Responsive Category Navigation)
   ========================================================================== */
.cat-nav-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  margin-bottom: 26px;
  box-shadow: var(--shadow-sm);
}

.cat-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.cat-nav-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cat-nav-title-icon {
  color: var(--primary);
  display: flex;
  align-items: center;
}

.cat-nav-active-badge {
  font-size: 0.78rem;
  font-weight: 600;
  color: #0284c7;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

/* Mobil Dropdown Seçici */
.cat-nav-mobile {
  display: none;
  margin-bottom: 12px;
}

.cat-select-wrapper {
  position: relative;
  width: 100%;
}

.cat-select-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--primary);
  display: flex;
  align-items: center;
}

.cat-select-box {
  width: 100%;
  padding: 11px 40px 11px 42px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #0f172a;
  background-color: #f8fafc;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
  outline: none;
  transition: all 0.2s ease;
}

.cat-select-box:focus {
  border-color: var(--primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.cat-select-arrow {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: #64748b;
  display: flex;
  align-items: center;
}

/* Çipler / Hap Butonlar (Flex-wrap - Asla Scrollbar Yok) */
.cat-chips-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cat-chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.cat-chip {
  white-space: nowrap;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #f8fafc;
  color: #334155;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1.2;
}

.cat-chip:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: var(--primary);
  transform: translateY(-1px);
}

.cat-chip.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 5px rgba(2, 132, 199, 0.3);
}

.cat-chip-code {
  font-size: 0.72rem;
  font-weight: 700;
  opacity: 0.8;
  background: rgba(0, 0, 0, 0.06);
  padding: 1px 5px;
  border-radius: 3px;
}

.cat-chip.active .cat-chip-code {
  background: rgba(255, 255, 255, 0.25);
  color: #ffffff;
}

/* Genişleyen Bölüm (Show More) */
.cat-chips-extended {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 8px;
  margin-top: 4px;
  border-top: 1px dashed var(--border);
}

.cat-chips-extended.show {
  display: flex;
  animation: catFadeIn 0.25s ease forwards;
}

@keyframes catFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.cat-toggle-btn {
  font-size: 0.82rem;
  font-weight: 700;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--primary);
  background: #f0f9ff;
  color: var(--primary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  line-height: 1.2;
}

.cat-toggle-btn:hover {
  background: #e0f2fe;
  border-style: solid;
}

.cat-toggle-chevron {
  display: inline-flex;
  transition: transform 0.2s ease;
}

.cat-toggle-btn[aria-expanded="true"] .cat-toggle-chevron {
  transform: rotate(180deg);
}

/* Mobil Kırılma Noktası */
@media (max-width: 768px) {
  .cat-nav-card {
    padding: 14px 14px;
    margin-bottom: 20px;
  }
  .cat-nav-mobile {
    display: block;
  }
  .cat-chips-desktop-only {
    display: none !important;
  }
  .cat-chips-row {
    gap: 6px;
  }
  .cat-chip {
    font-size: 0.78rem;
    padding: 6px 10px;
  }
  .cat-nav-active-badge {
    display: none;
  }
}