:root {
  --primary-gold: #c88f1e;
  --primary-gold-hover: #b07c15;
  --primary-gold-bright: #e5a92a;
  --gold-tint: rgba(200, 143, 30, 0.09);
  --gold-border: rgba(200, 143, 30, 0.35);

  --dark-bg: #151410;
  --dark-surface: #1e1c17;
  --dark-card: #28251f;
  --dark-border: #353229;

  --light-bg: #f9f8f4;
  --light-surface: #f3efe6;
  --card-bg: #ffffff;
  --border-line: #e4dfd4;

  --text-main: #181714;
  --text-muted: #6b675d;
  --text-light: #9f9b90;
  --white: #ffffff;

  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 2px 6px rgba(21, 20, 16, 0.04);
  --shadow-md: 0 8px 24px rgba(21, 20, 16, 0.08);
  --shadow-lg: 0 16px 40px rgba(21, 20, 16, 0.12);
  --transition: all 0.22s ease-in-out;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
  overflow-x: clip;
}

body {
  margin: 0;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  background-color: #ffffff;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

.container {
  width: min(1200px, calc(100% - 48px));
  margin-inline: auto;
}

/* -------------------------------------------------------------
   ÜST ŞERİT (TOP BAR)
------------------------------------------------------------- */
.top-bar {
  background: var(--dark-bg);
  color: #c9c5ba;
  font-size: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  z-index: 60;
}

.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  padding: 6px 0;
  gap: 20px;
}

.top-info, .top-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.icon-svg {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
  fill: var(--primary-gold);
}

.top-email a:hover {
  color: var(--primary-gold-bright);
}

.top-badge {
  background: rgba(200, 143, 30, 0.16);
  color: var(--primary-gold-bright);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.5px;
}

.top-tel {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #ffffff;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.3px;
}

.top-tel:hover {
  color: var(--primary-gold-bright);
}

/* -------------------------------------------------------------
   ANA BAŞLIK (SITE HEADER)
------------------------------------------------------------- */
.site-header {
  height: 84px;
  background: rgba(255, 255, 255, 0.98);
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border-line);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: var(--transition);
}

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

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  width: 52px;
  height: 52px;
  object-fit: contain;
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.brand:hover .brand-logo {
  transform: rotate(15deg) scale(1.05);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text strong {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--dark-bg);
}

.brand-text strong b {
  font-weight: 700;
  color: var(--primary-gold);
}

.brand-text small {
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 2.2px;
  margin-top: 3px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 26px;
  font-size: 14px;
  font-weight: 600;
}

.main-nav > a:not(.nav-contact) {
  position: relative;
  padding: 8px 2px;
  color: var(--text-main);
}

.main-nav > a:not(.nav-contact):after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gold);
  transition: width 0.2s ease;
}

.main-nav > a:not(.nav-contact):hover,
.main-nav > a.active:not(.nav-contact) {
  color: var(--primary-gold);
}

.main-nav > a.active:not(.nav-contact):after,
.main-nav > a:not(.nav-contact):hover:after {
  width: 100%;
}

.nav-contact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  background: var(--dark-bg);
  color: #ffffff !important;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
  transition: var(--transition);
}

.nav-contact:hover, .nav-contact.active {
  background: var(--primary-gold);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(200, 143, 30, 0.35);
}

.menu-toggle {
  display: none;
}

/* -------------------------------------------------------------
   HERO BÖLÜMÜ
------------------------------------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  background: #14130f;
  color: #ffffff;
  min-height: 620px;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 85% 30%, rgba(200, 143, 30, 0.18) 0%, transparent 60%),
              linear-gradient(90deg, rgba(20, 19, 15, 0.98) 0%, rgba(20, 19, 15, 0.88) 50%, rgba(20, 19, 15, 0.6) 100%),
              url('https://images.unsplash.com/photo-1581092160607-ee22621dd758?auto=format&fit=crop&w=2000&q=85') center/cover no-repeat;
  opacity: 0.95;
}

.hero:after {
  content: '';
  position: absolute;
  inset: auto 0 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-gold) 0%, var(--primary-gold-bright) 40%, #2f2a20 40%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  align-items: center;
  gap: 40px;
  padding: 70px 0 80px;
}

.hero-copy {
  max-width: 660px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--primary-gold-bright);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2.2px;
  text-transform: uppercase;
}

.eyebrow-line {
  display: inline-block;
  width: 26px;
  height: 2px;
  background: var(--primary-gold-bright);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(38px, 4.6vw, 56px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin: 20px 0 18px;
  color: #ffffff;
}

.hero h1 em, h2 em {
  font-style: normal;
  color: var(--primary-gold-bright);
}

.hero-copy > p {
  color: #cfcbbf;
  font-size: 16px;
  line-height: 1.85;
  margin: 0 0 32px;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 24px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.btn-gold {
  background: var(--primary-gold);
  color: #ffffff;
}

.btn-gold:hover {
  background: var(--primary-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(200, 143, 30, 0.4);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost:hover {
  border-color: var(--primary-gold);
  background: rgba(200, 143, 30, 0.1);
  color: #ffffff;
  transform: translateY(-2px);
}

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

.btn-dark:hover {
  background: #25231c;
  transform: translateY(-2px);
}

.hero-proof {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-top: 40px;
  padding-top: 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.proof-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(200, 143, 30, 0.15);
  border: 1px solid var(--primary-gold);
  display: grid;
  place-items: center;
  color: var(--primary-gold-bright);
}

.hero-proof strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
}

.hero-proof small {
  font-size: 12px;
  color: #a49f91;
}

/* Hero Sağ Amblem Kartı */
.hero-stamp-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-stamp-card {
  background: linear-gradient(145deg, rgba(34, 31, 24, 0.95), rgba(18, 17, 13, 0.98));
  border: 1px solid var(--gold-border);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), inset 0 0 40px rgba(200, 143, 30, 0.08);
  border-radius: var(--radius-lg);
  padding: 35px 30px;
  text-align: center;
  max-width: 340px;
  width: 100%;
}

.hero-stamp-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  filter: drop-shadow(0 8px 20px rgba(200, 143, 30, 0.35));
}

.hero-stamp-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  color: #ffffff;
  margin: 0 0 5px;
  letter-spacing: -0.3px;
}

.hero-stamp-card p {
  color: var(--primary-gold-bright);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 2px;
  margin: 0 0 18px;
}

.hero-stamp-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
  margin: 18px 0;
}

.stamp-eng-info strong {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

.stamp-eng-info small {
  font-size: 12px;
  color: #b3aea2;
}

/* -------------------------------------------------------------
   GÜVEN ŞERİDİ (TRUST STRIP)
------------------------------------------------------------- */
.trust-strip {
  background: var(--primary-gold);
  color: #ffffff;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.1);
}

.trust-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.trust-inner i {
  height: 22px;
  width: 1px;
  background: rgba(255, 255, 255, 0.35);
}

/* -------------------------------------------------------------
   SEKSİYON ORTAK STİLLERİ
------------------------------------------------------------- */
.section {
  padding: 85px 0;
}

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

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 45px;
}

.section-heading h2 {
  font-family: var(--font-heading);
  font-size: clamp(30px, 3.8vw, 44px);
  font-weight: 800;
  letter-spacing: -1.2px;
  line-height: 1.2;
  margin: 14px 0 0;
  color: var(--dark-bg);
}

.section-heading > p {
  max-width: 440px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
}

.section-foot-link {
  display: flex;
  justify-content: flex-end;
  margin-top: 35px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 800;
  color: var(--text-main);
  border-bottom: 2px solid var(--primary-gold);
  padding-bottom: 5px;
}

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

/* -------------------------------------------------------------
   HİZMET KARTLARI (SERVICES GRID)
------------------------------------------------------------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  position: relative;
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-gold);
  box-shadow: var(--shadow-md);
}

.service-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.service-cat-badge {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--primary-gold);
  background: var(--gold-tint);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.service-card-num {
  font-size: 12px;
  font-weight: 800;
  color: #c4bfb4;
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 19px;
  font-weight: 700;
  color: var(--dark-bg);
  line-height: 1.35;
  margin: 0 0 12px;
}

.service-card p {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.8;
  margin: 0 0 20px;
  flex-grow: 1;
}

.service-items-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  border-top: 1px solid var(--light-surface);
  padding-top: 16px;
}

.service-items-list li {
  position: relative;
  padding-left: 18px;
  font-size: 12px;
  color: #555146;
  margin-bottom: 8px;
  font-weight: 500;
}

.service-items-list li:before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--primary-gold);
  font-weight: 700;
}

.card-action-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 800;
  color: var(--primary-gold);
  margin-top: auto;
}

.service-card:hover .card-action-link {
  color: var(--primary-gold-hover);
  transform: translateX(3px);
}

/* -------------------------------------------------------------
   30 FAALİYET ALANI DİZİNİ (FAALİYETLER BÖLÜMÜ)
------------------------------------------------------------- */
.activities-box {
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.activities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.activity-group {
  background: var(--light-bg);
  border: 1px solid rgba(228, 223, 212, 0.8);
  border-radius: var(--radius-md);
  padding: 24px 22px;
}

.activity-group h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: var(--primary-gold);
  margin: 0 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid var(--gold-border);
  padding-bottom: 8px;
}

.activity-group ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.activity-group li {
  font-size: 12.5px;
  color: var(--text-main);
  padding: 6px 0;
  border-bottom: 1px dashed #e8e4db;
  display: flex;
  align-items: center;
  gap: 8px;
}

.activity-group li:last-child {
  border-bottom: none;
}

.activity-group li:before {
  content: '✓';
  color: var(--primary-gold);
  font-weight: 800;
  font-size: 11px;
}

/* -------------------------------------------------------------
   SAHA PROJELERİ & UYGULAMA GALERİSİ (PROJECTS)
------------------------------------------------------------- */
.project-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}

.filter-btn {
  background: #ffffff;
  border: 1px solid var(--border-line);
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--dark-bg);
  border-color: var(--dark-bg);
  color: #ffffff;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-gold);
  box-shadow: var(--shadow-md);
}

.project-thumb {
  position: relative;
  height: 220px;
  overflow: hidden;
  background: #222;
}

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

.project-card:hover .project-thumb img {
  transform: scale(1.06);
}

.project-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(21, 20, 16, 0.85);
  color: var(--primary-gold-bright);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.project-body {
  padding: 22px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-body h3 {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--dark-bg);
  line-height: 1.35;
}

.project-body p {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.7;
  margin: 0 0 18px;
  flex-grow: 1;
}

/* -------------------------------------------------------------
   ÜRÜN GRUPLARI (PRODUCTS GRID)
------------------------------------------------------------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.product-card {
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

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

.product-visual {
  position: relative;
  height: 190px;
  background: #fbfbf9;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border-bottom: 1px solid var(--border-line);
}

.product-visual img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
}

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

.product-code {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 10px;
  font-weight: 800;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.9);
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-line);
}

.product-cat {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: var(--primary-gold);
  background: rgba(200, 143, 30, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.product-info {
  padding: 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-info h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--dark-bg);
  margin: 0 0 8px;
  min-height: 42px;
  line-height: 1.35;
}

.product-info p {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
  margin: 0 0 16px;
  flex-grow: 1;
}

.product-btn {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 8px 12px;
  background: var(--light-bg);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 700;
  color: var(--dark-bg);
}

.product-card:hover .product-btn {
  background: var(--primary-gold);
  border-color: var(--primary-gold);
  color: #ffffff;
}

/* -------------------------------------------------------------
   MÜHENDİSLİK & DETAY BÖLÜMÜ (SPLIT SECTION)
------------------------------------------------------------- */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--dark-bg);
  color: #ffffff;
}

.split-image {
  position: relative;
  min-height: 520px;
  overflow: hidden;
}

.split-image img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  object-fit: cover;
  opacity: 0.85;
}

.split-image-caption {
  position: absolute;
  bottom: 30px;
  left: 30px;
  background: rgba(20, 19, 15, 0.85);
  backdrop-filter: blur(6px);
  padding: 12px 20px;
  border-left: 3px solid var(--primary-gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.split-image-caption strong {
  display: block;
  font-size: 13px;
  color: #ffffff;
}

.split-image-caption small {
  font-size: 11px;
  color: var(--primary-gold-bright);
}

.split-copy {
  padding: 70px 60px;
  align-self: center;
}

.split-copy h2 {
  font-family: var(--font-heading);
  font-size: clamp(28px, 3.2vw, 40px);
  font-weight: 800;
  letter-spacing: -1px;
  margin: 16px 0 20px;
  color: #ffffff;
  line-height: 1.25;
}

.split-copy p {
  color: #c9c5ba;
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 26px;
}

.check-list {
  list-style: none;
  padding: 0;
  margin: 0 0 34px;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 14px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 14px;
}

.check-list li span {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(200, 143, 30, 0.2);
  color: var(--primary-gold-bright);
  display: grid;
  place-items: center;
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* -------------------------------------------------------------
   CTA BANDI (CALL TO ACTION)
------------------------------------------------------------- */
.cta-band {
  background: var(--dark-bg);
  color: #ffffff;
  padding: 60px 0;
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.cta-band:after {
  content: 'NOVA';
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-heading);
  font-size: 180px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.02);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.cta-inner h2 {
  font-family: var(--font-heading);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.25;
  margin: 12px 0 0;
  color: #ffffff;
}

.cta-buttons {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
}

/* -------------------------------------------------------------
   SAYFA KAHRAMANI (PAGE HERO)
------------------------------------------------------------- */
.page-hero {
  background: var(--light-bg);
  border-bottom: 1px solid var(--border-line);
  padding: 65px 0 70px;
}

.page-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 800;
  letter-spacing: -1.4px;
  margin: 16px 0 14px;
  color: var(--dark-bg);
  line-height: 1.2;
}

.page-hero p {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 680px;
  line-height: 1.85;
  margin: 0;
}

/* -------------------------------------------------------------
   KURUMSAL SAYFA DÜZENİ
------------------------------------------------------------- */
.content-columns {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
}

.engineer-card {
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 30px;
}

.engineer-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--dark-bg);
  border: 2px solid var(--primary-gold);
  display: grid;
  place-items: center;
  color: var(--primary-gold-bright);
  font-family: var(--font-heading);
  font-size: 26px;
  font-weight: 800;
  flex-shrink: 0;
}

.engineer-details strong {
  display: block;
  font-size: 17px;
  font-weight: 800;
  color: var(--dark-bg);
}

.engineer-details small {
  display: block;
  color: var(--primary-gold);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1px;
  margin: 2px 0 8px;
}

.engineer-details p {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.value-card {
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
}

.value-num {
  font-size: 12px;
  font-weight: 800;
  color: var(--primary-gold);
}

.value-card h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  margin: 12px 0 10px;
}

.value-card p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.7;
}

/* -------------------------------------------------------------
   İLETİŞİM SAYFASI & FORMU
------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
}

.contact-info h2 {
  font-family: var(--font-heading);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -1px;
  margin: 14px 0 16px;
}

.contact-info > p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.8;
  margin: 0 0 28px;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 30px;
}

.contact-card-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--light-bg);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.contact-card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: #ffffff;
  border: 1px solid var(--border-line);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.contact-card-text span {
  display: block;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 1.2px;
  color: var(--primary-gold);
  margin-bottom: 4px;
}

.contact-card-text a, .contact-card-text p {
  font-size: 14px;
  font-weight: 700;
  color: var(--dark-bg);
  margin: 0;
  line-height: 1.5;
}

.contact-form-wrap {
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  padding: 38px;
  box-shadow: var(--shadow-sm);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.form-group label {
  font-size: 12px;
  font-weight: 700;
  color: var(--dark-bg);
}

.form-group label span {
  color: #d93838;
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  font-size: 13px;
  color: var(--text-main);
  background: #ffffff;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary-gold);
  box-shadow: 0 0 0 3px var(--gold-tint);
}

.form-control.is-invalid {
  border-color: #d93838 !important;
  background-color: #fffafa !important;
  box-shadow: 0 0 0 3px rgba(217, 56, 56, 0.12) !important;
}

.field-error-text {
  display: block;
  font-size: 11.5px;
  color: #d93838;
  margin-top: 4px;
  font-weight: 600;
  line-height: 1.4;
}

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

.form-submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 8px;
}

.form-note {
  font-size: 11px;
  color: var(--text-muted);
  margin: 0;
}

.form-alert {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 13px;
}

.form-alert-success {
  background: #edf8ef;
  border: 1px solid #c2e8c8;
  color: #1a6b2c;
}

.form-alert-error {
  background: #fdf1f0;
  border: 1px solid #fad2cf;
  color: #af231a;
}

.hp-field {
  display: none !important;
}

/* -------------------------------------------------------------
   ALT BİLGİ (FOOTER)
------------------------------------------------------------- */
.site-footer {
  background: var(--dark-bg);
  color: #ffffff;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-main {
  padding: 70px 0 55px;
  display: grid;
  grid-template-columns: 1.4fr 0.9fr 1.1fr 1.2fr;
  gap: 40px;
}

.brand-footer .brand-text strong {
  color: #ffffff;
}

.brand-footer .brand-text small {
  color: var(--primary-gold-bright);
}

.footer-desc {
  font-size: 13px;
  color: #a4a093;
  line-height: 1.8;
  margin: 18px 0 20px;
  max-width: 320px;
}

.footer-badges {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-badge {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary-gold-bright);
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: #ffffff;
  margin: 0 0 20px;
  position: relative;
  padding-bottom: 8px;
}

.footer-col h4:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--primary-gold);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 12.5px;
  color: #a4a093;
  display: inline-block;
  transition: var(--transition);
}

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

.footer-contact-item {
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-contact-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.f-label {
  display: block;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.2px;
  color: var(--primary-gold);
  margin-bottom: 4px;
}

.f-val, .f-addr {
  font-size: 12.5px;
  color: #d1ccbe;
  margin: 0;
  line-height: 1.6;
}

.f-phone {
  font-size: 15px;
  font-weight: 800;
  color: #ffffff;
}

.f-phone:hover {
  color: var(--primary-gold-bright);
}

.footer-contact-item a {
  display: block;
  font-size: 12.5px;
  color: #d1ccbe;
  line-height: 1.6;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: #7d786d;
  padding: 15px 0;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-bottom-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.admin-link {
  color: #7d786d;
  font-size: 10px;
  text-decoration: underline;
}

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

/* -------------------------------------------------------------
   SABİT WHATSAPP BUTONU (FLOATING WHATSAPP)
------------------------------------------------------------- */
.whatsapp-float {
  position: fixed;
  right: 24px;
  bottom: 28px;
  z-index: 80;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: #ffffff;
  display: grid;
  place-items: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.5);
  color: #ffffff;
}

.wa-tooltip {
  position: absolute;
  right: 68px;
  background: var(--dark-bg);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transform: translateX(10px);
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--dark-border);
}

.whatsapp-float:hover .wa-tooltip {
  opacity: 1;
  transform: translateX(0);
}

/* -------------------------------------------------------------
   MOBİL EYLEM ÇUBUĞU (BOTTOM ACTION BAR)
------------------------------------------------------------- */
.mobile-action-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 70;
  background: var(--dark-bg);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: none;
  grid-template-columns: 1fr 1fr 1fr;
  height: 58px;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.25);
}

.m-action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: #ffffff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.m-action-btn:last-child {
  border-right: none;
}

.m-action-btn.m-call {
  background: #1e1c17;
}

.m-action-btn.m-wa {
  background: #1ebe5d;
}

.m-action-btn.m-quote {
  background: var(--primary-gold);
}

/* -------------------------------------------------------------
   RESİF BÜYÜTME MODAL (LIGHTBOX)
------------------------------------------------------------- */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 8, 0.92);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(8px);
}

.lightbox-modal.is-active {
  display: flex;
}

.lightbox-content {
  position: relative;
  max-width: 800px;
  width: 100%;
  background: var(--dark-bg);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

.lightbox-img {
  width: 100%;
  max-height: 70vh;
  object-fit: contain;
  background: #000;
}

.lightbox-caption {
  padding: 16px 20px;
  color: #ffffff;
  background: var(--dark-surface);
}

.lightbox-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-size: 20px;
  display: grid;
  place-items: center;
  cursor: pointer;
  z-index: 5;
}

/* -------------------------------------------------------------
   RESPONSIVE (TABLET & MOBİL)
------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    padding: 60px 0 70px;
  }
  .hero-stamp-wrap {
    justify-content: flex-start;
  }
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .activities-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 35px;
  }
  .content-columns {
    grid-template-columns: 1fr;
    gap: 35px;
  }
}

@media (max-width: 768px) {
  body {
    padding-bottom: 58px; /* For mobile action bar */
  }

  .top-bar {
    display: none; /* Mobile handles top contact via action bar */
  }

  .site-header {
    height: 72px;
  }

  .brand-logo {
    width: 44px;
    height: 44px;
  }

  .brand-text strong {
    font-size: 16px;
  }

  .brand-text small {
    font-size: 9px;
    letter-spacing: 1.5px;
  }

  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    background: transparent;
    border: 1px solid var(--border-line);
    border-radius: var(--radius-sm);
    cursor: pointer;
    z-index: 55;
  }

  .menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--dark-bg);
    transition: var(--transition);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    gap: 0;
    padding: 16px 24px 28px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
    border-bottom: 2px solid var(--primary-gold);
    transform: translateY(-120%);
    visibility: hidden;
    transition: transform 0.28s ease, visibility 0.28s ease;
    z-index: 49;
  }

  .main-nav.is-open {
    transform: translateY(0);
    visibility: visible;
  }

  .main-nav > a:not(.nav-contact) {
    padding: 14px 0;
    border-bottom: 1px solid #ede8de;
    width: 100%;
    font-size: 15px;
  }

  .main-nav .nav-contact {
    margin-top: 16px;
    width: 100%;
    justify-content: center;
  }

  .hero {
    min-height: auto;
  }

  .hero h1 {
    font-size: 32px;
    letter-spacing: -1px;
  }

  .hero-copy > p {
    font-size: 14px;
  }

  .trust-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 16px 0;
    font-size: 10px;
  }

  .trust-inner i {
    display: none;
  }

  .section {
    padding: 55px 0;
  }

  .section-heading {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 30px;
  }

  .section-heading h2 {
    font-size: 26px;
  }

  .service-grid, .project-grid, .activities-grid, .values-grid {
    grid-template-columns: 1fr;
  }

  .values-grid {
    gap: 16px;
  }

  .value-card {
    padding: 22px 18px;
  }

  .engineer-card {
    padding: 20px 16px;
    gap: 16px;
  }

  .page-hero {
    padding: 42px 0 46px;
  }

  .page-hero h1 {
    font-size: clamp(26px, 7vw, 36px);
    letter-spacing: -0.8px;
    word-wrap: break-word;
  }

  .page-hero p {
    font-size: 14px;
    line-height: 1.7;
  }

  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .product-visual {
    height: 140px;
  }

  .product-info h3 {
    font-size: 13px;
    min-height: 36px;
  }

  .split-section {
    grid-template-columns: 1fr;
  }

  .split-image {
    min-height: 280px;
  }

  .split-copy {
    padding: 40px 24px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .cta-buttons {
    width: 100%;
    flex-direction: column;
  }

  .cta-buttons .btn {
    width: 100%;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 35px;
  }

  .contact-form-wrap {
    padding: 24px 18px;
  }

  .form-row-2 {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 50px 0 40px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .whatsapp-float {
    bottom: 74px; /* Above mobile action bar */
    right: 18px;
    width: 48px;
    height: 48px;
  }

  .mobile-action-bar {
    display: grid;
  }
}

@media (max-width: 480px) {
  .engineer-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px 16px;
    gap: 14px;
  }

  .engineer-avatar {
    width: 52px;
    height: 52px;
    font-size: 20px;
  }
}