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

:root {
  --navy: #0f172a;
  --navy-deep: #09101f;
  --navy-surface: #1e293b;
  --navy-fg: #f8fafc;
  --brand: #0062ff;
  --brand-hover: #004ecc;
  --brand-orange: #ff5e00;
  --brand-amber: #ffb800;
  --brand-blue: #0062ff;
  --brand-cyan: #00c6ff;
  --bg: #f4f7fb;
  --card: #ffffff;
  --fg: #0f172a;
  --muted: #f1f5f9;
  --muted-fg: #64748b;
  --border: #dbe4f0;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --shadow-soft: 0 4px 20px -6px rgba(15, 37, 71, 0.1);
  --shadow-card: 0 14px 40px -12px rgba(15, 37, 71, 0.15);
  --shadow-cinematic: 0 24px 60px -15px rgba(9, 16, 31, 0.22);
  --shadow-glow: 0 10px 28px -6px rgba(0, 98, 255, 0.38);
  --shadow-orange-glow: 0 10px 28px -6px rgba(255, 94, 0, 0.35);
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Manrope', 'Inter', system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
  max-width: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
  max-width: 100%;
}

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

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

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ==========================================================================
   TOPBAR & HEADER
   ========================================================================== */
.topbar {
  background: var(--navy-deep);
  color: rgba(248, 250, 252, 0.84);
  font-size: 0.8125rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  flex-wrap: wrap;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(248, 250, 252, 0.85);
  transition: color 0.15s;
}

.topbar-item:hover {
  color: #ffffff;
}

.topbar-item svg {
  color: var(--brand-cyan);
  flex-shrink: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 15px rgba(11, 21, 40, 0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 5.65rem;
  gap: 1.5rem;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo img {
  height: 4.1rem;
  max-height: 66px;
  width: auto;
  object-fit: contain;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  padding: 0.55rem 0.95rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.925rem;
  color: var(--navy);
  transition: all 0.15s ease;
}

.nav-link:hover {
  background: var(--muted);
  color: var(--brand);
}

.nav-link.is-active {
  background: rgba(0, 98, 255, 0.1);
  color: var(--brand);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-phone-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.95rem;
  border-radius: var(--radius-md);
  background: var(--muted);
  color: var(--navy);
  font-weight: 700;
  font-size: 0.875rem;
  border: 1px solid var(--border);
  transition: all 0.15s;
}

.header-phone-pill:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.mobile-menu-btn {
  display: none;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  color: var(--navy);
}

.mobile-nav-drawer {
  display: none;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.25rem;
}

.mobile-nav-drawer.is-open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.925rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.btn-sm {
  padding: 0.48rem 0.9rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.95rem 1.65rem;
  font-size: 1rem;
  border-radius: 0.85rem;
}

.btn-full {
  width: 100%;
}

.btn-brand {
  background: linear-gradient(135deg, #0062ff 0%, #0095ff 52%, #ff5e00 100%);
  background-size: 160% 160%;
  background-position: 0% 50%;
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-brand:hover {
  transform: translateY(-2px);
  background-position: 100% 50%;
  box-shadow: var(--shadow-orange-glow);
}

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

.btn-navy:hover {
  background: var(--navy-surface);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--navy);
}

.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: rgba(0, 98, 255, 0.05);
}

.btn-glass {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
  color: #ffffff;
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.4);
}

/* ==========================================================================
   PAGE HERO & HOME HERO
   ========================================================================== */
.page-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #091326 0%, #0f2547 52%, #0c3b6e 100%);
  color: var(--navy-fg);
  padding: 3.75rem 0 4rem;
  border-bottom: 4px solid transparent;
  border-image: linear-gradient(90deg, #0062ff 0%, #00c6ff 35%, #ff5e00 70%, #ffb800 100%) 1;
}

.page-hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
  opacity: 0.26;
  pointer-events: none;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 17, 34, 0.95) 0%, rgba(12, 28, 56, 0.8) 55%, rgba(12, 28, 56, 0.38) 100%);
  pointer-events: none;
}

.page-hero-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(0, 198, 255, 0.22) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.45;
  pointer-events: none;
}

.page-hero-inner {
  position: relative;
  z-index: 2;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: rgba(248, 250, 252, 0.68);
  margin-bottom: 1.1rem;
}

.breadcrumb a:hover {
  color: #ffffff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.38rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 198, 255, 0.45);
  background: rgba(0, 98, 255, 0.2);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-orange);
  box-shadow: 0 0 10px var(--brand-orange);
}

.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.1rem);
  font-weight: 800;
  line-height: 1.15;
  margin-top: 1rem;
  max-width: 46rem;
}

.page-hero p {
  margin-top: 0.9rem;
  font-size: 1.075rem;
  color: rgba(248, 250, 252, 0.85);
  max-width: 42rem;
}

/* ==========================================================================
   CALCULATOR MODULE (Artı Led Özgün Kurumsal Mühendislik Stüdyosu)
   ========================================================================== */
.calc-section {
  padding: 3rem 0 4.75rem;
}

.calc-layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1.12fr);
  gap: 2rem;
  align-items: start;
  width: 100%;
  max-width: 100%;
}

/* SOL SÜTUN: Açık Gri / İnci Beyazı Mühendislik Konfigüratör Kartı */
.calc-config-card {
  position: relative;
  overflow: visible;
  min-width: 0;
  max-width: 100%;
  border-radius: 1.35rem;
  border: 1px solid #d5e0ee;
  background: #ffffff;
  padding: 1.65rem 1.5rem 1.5rem;
  box-shadow: 0 22px 55px -16px rgba(15, 23, 42, 0.14);
  color: var(--fg);
}

/* Artı Led RGB Spektrum Üst Şeridi */
.calc-spectrum-bar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  border-radius: 1.35rem 1.35rem 0 0;
  background: linear-gradient(90deg, #0062ff 0%, #00c6ff 35%, #ff5e00 72%, #ffb800 100%);
}

.calc-config-grid-bg {
  position: absolute;
  inset: 0;
  border-radius: 1.35rem;
  background-image: radial-gradient(rgba(0, 98, 255, 0.06) 1px, transparent 1px);
  background-size: 18px 18px;
  pointer-events: none;
}

.calc-config-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

/* Konfigüratör Üst Başlığı */
.calc-config-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid #e2e8f0;
}

.calc-config-kicker {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand);
}

.calc-config-heading {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--navy);
  margin-top: 0.1rem;
}

.calc-step-counter {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 98, 255, 0.1) 0%, rgba(255, 94, 0, 0.12) 100%);
  border: 1px solid rgba(0, 98, 255, 0.22);
  color: var(--brand);
  font-size: 0.73rem;
  font-weight: 800;
  white-space: nowrap;
}

/* Numaralı Adım Kartları */
.calc-step-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 1rem;
  padding: 1rem 1.05rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  min-width: 0;
  max-width: 100%;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.calc-step-box:hover {
  border-color: #cbd5e1;
  box-shadow: 0 6px 18px -8px rgba(0, 98, 255, 0.1);
}

.calc-step-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.calc-step-num {
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, #0062ff 0%, #00a8ff 100%);
  color: #ffffff;
  font-family: var(--font-display);
  font-size: 0.74rem;
  font-weight: 800;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(0, 98, 255, 0.25);
}

.calc-step-num.is-orange {
  background: linear-gradient(135deg, #ff5e00 0%, #ffa000 100%);
  box-shadow: 0 4px 10px rgba(255, 94, 0, 0.25);
}

.calc-step-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--navy);
}

.calc-field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-width: 0;
  max-width: 100%;
}

.calc-label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: #334155;
}

/* 1. Adım: Kullanım Alanı Kartları (Radyo İndikatörlü) */
.calc-env-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.calc-env-btn {
  position: relative;
  border-radius: 0.9rem;
  border: 2px solid #e2e8f0;
  background: #ffffff;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.calc-env-btn:hover {
  border-color: #93c5fd;
  transform: translateY(-1px);
}

.calc-env-btn.is-active {
  border-color: var(--brand);
  box-shadow: 0 10px 24px -8px rgba(0, 98, 255, 0.35), 0 0 0 1px var(--brand);
}

.calc-env-img-wrap {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9.5;
  width: 100%;
  overflow: hidden;
}

.calc-env-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.calc-env-btn:hover .calc-env-img-wrap img {
  transform: scale(1.07);
}

.calc-env-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.05) 0%, rgba(15, 23, 42, 0.45) 100%);
  transition: background 0.2s;
}

.calc-env-btn.is-active .calc-env-overlay {
  background: linear-gradient(180deg, rgba(0, 98, 255, 0.08) 0%, rgba(0, 98, 255, 0.32) 100%);
}

.calc-env-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.7rem;
  font-size: 0.76rem;
  font-weight: 800;
  color: var(--navy);
  background: #ffffff;
  transition: all 0.2s;
}

.calc-env-btn.is-active .calc-env-title {
  background: linear-gradient(90deg, #0062ff 0%, #0088ff 100%);
  color: #ffffff;
}

.calc-env-radio {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid #94a3b8;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
  transition: all 0.2s;
}

.calc-env-btn.is-active .calc-env-radio {
  border-color: #ffffff;
  background: var(--brand-orange);
  box-shadow: 0 0 0 3px rgba(255, 94, 0, 0.35);
}

/* 2. Adım: Ürün Seçici (Product Picker & Popover) */
.calc-picker-row {
  display: flex;
  align-items: stretch;
  gap: 0.45rem;
}

.calc-picker-trigger-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
}

.calc-picker-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border-radius: 0.8rem;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  padding: 0.55rem 0.75rem;
  color: var(--navy);
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
}

.calc-picker-trigger:hover {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(0, 98, 255, 0.1);
}

.calc-picker-thumb {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.5rem;
  object-fit: cover;
  flex-shrink: 0;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}

.calc-picker-text {
  flex: 1;
  min-width: 0;
}

.calc-picker-title {
  display: block;
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calc-picker-meta {
  display: block;
  font-size: 0.74rem;
  color: #64748b;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calc-icon-chevron {
  width: 1rem;
  height: 1rem;
  color: #64748b;
  flex-shrink: 0;
}

.calc-popover {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 60;
  background: #ffffff;
  color: var(--fg);
  border-radius: 0.9rem;
  border: 1px solid #cbd5e1;
  box-shadow: 0 22px 48px -10px rgba(15, 23, 42, 0.28);
  padding: 0.5rem;
  max-height: 21rem;
  display: flex;
  flex-direction: column;
}

.calc-popover-search {
  padding: 0.2rem 0.2rem 0.45rem;
}

.calc-search-input {
  width: 100%;
  padding: 0.55rem 0.75rem;
  border-radius: 0.55rem;
  border: 1px solid #cbd5e1;
  background: #f8fafc;
  font-size: 0.85rem;
  outline: none;
}

.calc-search-input:focus {
  border-color: var(--brand);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(0, 98, 255, 0.12);
}

.calc-popover-list {
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.calc-popover-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  width: 100%;
  padding: 0.5rem 0.6rem;
  border-radius: 0.6rem;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background 0.12s;
}

.calc-popover-item:hover {
  background: #f1f5f9;
}

.calc-popover-item.is-selected {
  background: rgba(0, 98, 255, 0.1);
}

.calc-popover-item-img {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.5rem;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.calc-popover-item-name {
  flex: 1;
  min-width: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calc-popover-item-meta {
  font-size: 0.75rem;
  color: var(--muted-fg);
  flex-shrink: 0;
}

.calc-popover-empty {
  padding: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted-fg);
}

/* Detay ve Dosya Butonları */
.calc-detail-btn,
.calc-files-btn {
  width: 50px;
  height: 50px;
  flex-shrink: 0;
  border-radius: 0.8rem;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  color: #475569;
  transition: all 0.15s;
}

.calc-detail-btn img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 3px;
}

.calc-detail-btn-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 98, 255, 0.78);
  display: grid;
  place-items: center;
  color: #ffffff;
  opacity: 0;
  transition: opacity 0.15s;
}

.calc-detail-btn:hover .calc-detail-btn-overlay {
  opacity: 1;
}

.calc-files-btn:hover,
.calc-detail-btn:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.calc-files-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--brand-orange);
  color: #ffffff;
  font-size: 10px;
  font-weight: 800;
  display: grid;
  place-items: center;
}

/* 3. Adım: En / Boy Stepper & Hızlı Ölçüler */
.calc-dims-block {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  min-width: 0;
  max-width: 100%;
}

.calc-dims-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.calc-stepper {
  display: flex;
  align-items: center;
  width: 100%;
  min-width: 0;
  border-radius: 0.8rem;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.calc-step-btn {
  width: 2.65rem;
  height: 2.65rem;
  flex-shrink: 0;
  border: none;
  background: #f1f5f9;
  color: var(--navy);
  font-size: 1.2rem;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.15s;
}

.calc-step-btn:hover {
  background: var(--brand);
  color: #ffffff;
}

.calc-step-input {
  flex: 1;
  width: 100%;
  min-width: 0;
  height: 2.65rem;
  border: none;
  background: #ffffff;
  text-align: center;
  font-size: 1rem;
  font-weight: 800;
  color: var(--navy);
  outline: none;
  -moz-appearance: textfield;
}

.calc-step-input::-webkit-inner-spin-button,
.calc-step-input::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.calc-presets-bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.calc-presets-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: #64748b;
  margin-right: 0.15rem;
}

.calc-preset-pill {
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #334155;
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
}

.calc-preset-pill:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.calc-preset-pill.is-active {
  border-color: var(--brand-orange);
  background: linear-gradient(135deg, #ff5e00 0%, #ff8800 100%);
  color: #ffffff;
  box-shadow: 0 3px 10px rgba(255, 94, 0, 0.25);
}

.calc-snap-hint {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  font-size: 0.74rem;
  color: #475569;
  background: #eef4ff;
  border: 1px solid #cfe0ff;
  border-radius: 0.65rem;
  padding: 0.5rem 0.65rem;
}

.calc-snap-hint svg {
  color: var(--brand);
  flex-shrink: 0;
  margin-top: 2px;
}

.calc-snap-applied {
  color: var(--brand-orange);
  font-weight: 700;
}

/* 4. Adım: Kontrol Kart Sistemi Marka Seçimi */
.calc-brand-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.calc-brand-btn {
  height: 3.7rem;
  border-radius: 0.8rem;
  border: 2px solid #e2e8f0;
  background: #ffffff;
  display: grid;
  place-items: center;
  padding: 0.5rem 1rem;
  cursor: pointer;
  opacity: 0.78;
  transition: all 0.2s ease;
}

.calc-brand-btn:hover {
  opacity: 1;
  border-color: #93c5fd;
}

.calc-brand-btn.is-active {
  opacity: 1;
  border-color: var(--brand);
  box-shadow: 0 8px 20px -6px rgba(0, 98, 255, 0.28);
  background: #f8fbff;
}

.calc-brand-btn img {
  max-height: 1.95rem;
  width: auto;
  object-fit: contain;
}

/* 5. Adım: Opsiyonel Seçim Kutusu */
.calc-optional-box {
  background: linear-gradient(180deg, #fffaf5 0%, #fff5eb 100%);
  border-color: #fed7aa;
}

.calc-optional-desc {
  font-size: 0.75rem;
  color: #7c2d12;
  opacity: 0.85;
}

.calc-optional-fields {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

/* ==========================================================================
   SAĞ SÜTUN: Canlı Blueprint Teknik Çizim, Metrikler & BOM Reçetesi
   ========================================================================== */
.calc-results-column {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  min-width: 0;
  max-width: 100%;
}

.calc-svg-wrapper {
  overflow: hidden;
  max-width: 100%;
  border-radius: 1.25rem;
  border: 1px solid #1e293b;
  background: #0a1426;
  box-shadow: 0 20px 45px -12px rgba(9, 16, 31, 0.32);
}

.calc-svg-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  padding: 0.65rem 1rem;
  background: #0f1d35;
  border-bottom: 1px solid rgba(56, 189, 248, 0.18);
  font-size: 0.75rem;
}

.calc-svg-topbar-title {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #e2e8f0;
}

.calc-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00e676;
  box-shadow: 0 0 8px #00e676;
}

.calc-svg-topbar-meta {
  font-weight: 700;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

.calc-svg-canvas {
  width: 100%;
  height: auto;
  display: block;
}

.calc-case-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-radius: 0.9rem;
  border: 1px solid var(--border);
  background: var(--card);
  padding: 0.8rem 1rem;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: border-color 0.15s;
}

.calc-case-toggle:hover {
  border-color: var(--brand-orange);
}

.calc-case-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-checkbox-ui {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 0.35rem;
  border: 2px solid #cbd5e1;
  background: #ffffff;
  display: grid;
  place-items: center;
  transition: all 0.15s;
}

.calc-case-toggle input:checked + .calc-checkbox-ui {
  background: var(--brand-orange);
  border-color: var(--brand-orange);
}

.calc-case-toggle-text {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--navy);
}

.calc-case-legend {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted-fg);
}

.calc-case-legend-line {
  width: 1.5rem;
  height: 3px;
  border-radius: 99px;
  background: var(--brand-orange);
}

.calc-warnings-box {
  border-radius: 0.9rem;
  border: 1px solid rgba(255, 94, 0, 0.38);
  background: #fff7ed;
  padding: 0.8rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.calc-warning-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: #9a3412;
}

.calc-warning-item svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--brand-orange);
}

/* 7'li Metrik Kartları (Renk Kodlu Sol Kenar) */
.calc-metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.calc-metric-card {
  border-radius: 0.9rem;
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  background: var(--card);
  padding: 0.9rem 1.05rem;
  box-shadow: var(--shadow-soft);
  transition: all 0.2s ease;
}

.calc-metric-card.is-accent-blue {
  border-left-color: #0062ff;
}

.calc-metric-card.is-accent-cyan {
  border-left-color: #00b4d8;
}

.calc-metric-card.is-accent-orange {
  border-left-color: #ff5e00;
}

.calc-metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.calc-metric-head {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--muted-fg);
}

.calc-metric-card.is-accent-blue .calc-metric-head svg {
  color: #0062ff;
}

.calc-metric-card.is-accent-cyan .calc-metric-head svg {
  color: #0096c7;
}

.calc-metric-card.is-accent-orange .calc-metric-head svg {
  color: #ff5e00;
}

.calc-metric-val {
  margin-top: 0.3rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--navy);
}

.calc-metric-sub {
  font-size: 0.74rem;
  color: var(--muted-fg);
  margin-top: 0.1rem;
}

/* Malzeme Listesi (BOM) - Görsel Küçük Resimli */
.calc-bom-card {
  border-radius: 1.1rem;
  border: 1px solid var(--border);
  background: var(--card);
  padding: 1.25rem;
  box-shadow: var(--shadow-soft);
}

.calc-bom-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.calc-bom-kicker {
  display: block;
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand-orange);
}

.calc-bom-title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--navy);
}

.calc-bom-tag {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: #eef4ff;
  color: var(--brand);
  font-size: 0.72rem;
  font-weight: 800;
}

.calc-bom-list {
  list-style: none;
  margin-top: 0.5rem;
}

.calc-bom-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--border);
}

.calc-bom-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.calc-bom-thumb {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.55rem;
  object-fit: contain;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  padding: 2px;
  flex-shrink: 0;
}

.calc-bom-info {
  flex: 1;
  min-width: 0;
}

.calc-bom-role {
  font-size: 0.65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
}

.calc-bom-name {
  display: block;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--navy);
  transition: color 0.15s;
}

.calc-bom-name:hover {
  color: var(--brand-orange);
}

.calc-bom-note {
  font-size: 0.73rem;
  color: var(--muted-fg);
}

.calc-bom-qty {
  flex-shrink: 0;
  padding: 0.32rem 0.8rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 800;
}

.calc-error-box {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  border-radius: 0.95rem;
  border: 1px solid rgba(255, 94, 0, 0.5);
  background: #fff7ed;
  padding: 1.25rem;
  color: #9a3412;
  font-size: 0.9rem;
}

/* ==========================================================================
   MODALS (Ürün Detay & Teklif Talep)
   ========================================================================== */
.site-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(9, 16, 31, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.site-modal.is-open {
  display: flex;
}

.modal-dialog {
  position: relative;
  width: 100%;
  max-width: 36rem;
  max-height: 90vh;
  overflow-y: auto;
  background: #ffffff;
  border-radius: 1.2rem;
  padding: 1.65rem;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.5);
}

.modal-close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: var(--muted);
  color: var(--navy);
  display: grid;
  place-items: center;
  cursor: pointer;
}

.modal-close-btn:hover {
  background: var(--brand);
  color: #ffffff;
  border-color: var(--brand);
}

.modal-header-block {
  padding-right: 2.25rem;
  margin-bottom: 1rem;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--navy);
}

.modal-badge-auto {
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--brand);
  margin-top: 0.2rem;
}

.modal-subtitle {
  font-size: 0.85rem;
  color: var(--muted-fg);
  margin-top: 0.25rem;
}

.modal-image-showcase {
  border-radius: 1rem;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  max-height: 320px;
  margin-bottom: 1rem;
}

.modal-image-showcase img {
  max-height: 270px;
  width: auto;
  object-fit: contain;
}

.modal-desc {
  font-size: 0.9rem;
  color: var(--muted-fg);
  margin-bottom: 1rem;
}

.modal-specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.65rem 1rem;
  background: var(--muted);
  border-radius: 0.85rem;
  padding: 1rem;
  margin-bottom: 1rem;
}

.modal-spec-item dt {
  font-size: 0.72rem;
  color: var(--muted-fg);
}

.modal-spec-item dd {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--navy);
}

.modal-files-section h4 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.modal-files-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.modal-file-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-radius: 0.65rem;
  border: 1px solid var(--border);
  background: #ffffff;
  transition: border-color 0.15s;
}

.modal-file-link:hover {
  border-color: var(--brand);
}

.modal-file-link svg:first-child {
  color: var(--brand);
  flex-shrink: 0;
}

.modal-file-info {
  flex: 1;
  min-width: 0;
}

.modal-file-info strong {
  display: block;
  font-size: 0.85rem;
  color: var(--navy);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.modal-file-info small {
  display: block;
  font-size: 0.72rem;
  color: var(--muted-fg);
}

/* Teklif Özeti ve Formu */
.quote-summary-box {
  background: var(--muted);
  border-radius: 0.85rem;
  padding: 1rem;
  font-size: 0.78rem;
  margin-bottom: 1.15rem;
}

.quote-summary-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.quote-summary-head span {
  color: var(--muted-fg);
  font-weight: 600;
}

.quote-summary-head strong {
  color: var(--navy);
}

.quote-summary-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.quote-summary-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.quote-summary-row dt {
  color: var(--muted-fg);
}

.quote-summary-row dd {
  font-weight: 700;
  color: var(--navy);
  text-align: right;
}

.quote-form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.form-row-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.85rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--navy);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.6rem 0.8rem;
  border-radius: 0.55rem;
  border: 1px solid var(--border);
  background: #ffffff;
  font-size: 0.9rem;
  color: var(--fg);
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--brand);
}

.quote-success-state {
  text-align: center;
  padding: 1.5rem 0.5rem;
}

.quote-success-icon {
  color: #16a34a;
  margin-bottom: 0.75rem;
}

.quote-success-state h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.quote-success-state p {
  font-size: 0.9rem;
  color: var(--muted-fg);
  margin-bottom: 1.25rem;
}

/* ==========================================================================
   KURUMSAL SAYFA BÖLÜMLERİ (Ana Sayfa, Ürünler, Projeler, SSS, Footer)
   ========================================================================== */
.section {
  padding: 4.5rem 0;
}

.section-muted {
  background: #eaf0f8;
}

.section-dark {
  background: linear-gradient(165deg, #091326 0%, #050914 100%);
  color: #ffffff;
}

.section-header {
  max-width: 42rem;
  margin-bottom: 2.75rem;
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--brand);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  font-weight: 800;
  color: var(--navy);
  line-height: 1.2;
}

.section-dark .section-title {
  color: #ffffff;
}

.section-desc {
  margin-top: 0.75rem;
  font-size: 1rem;
  color: var(--muted-fg);
}

.section-dark .section-desc {
  color: rgba(248, 250, 252, 0.75);
}

/* Home Hero */
.home-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #071022 0%, #0d2142 55%, #0c3564 100%);
  color: #ffffff;
  padding: 5rem 0 5.5rem;
}

.home-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}

.home-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.12;
  margin-top: 1.1rem;
}

.home-hero-title span {
  background: linear-gradient(90deg, #00c6ff 0%, #ff7b00 55%, #ffb800 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-hero-lead {
  margin-top: 1.15rem;
  font-size: 1.1rem;
  color: rgba(248, 250, 252, 0.85);
  max-width: 38rem;
}

.home-hero-cta {
  margin-top: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.home-hero-stats {
  margin-top: 2.75rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.hero-stat-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--brand-cyan);
}

.hero-stat-label {
  font-size: 0.8125rem;
  color: rgba(248, 250, 252, 0.72);
}

.home-hero-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 1.5rem;
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-cinematic);
}

/* Kart Izgaraları */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 1.15rem;
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
  transition: all 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 98, 255, 0.35);
  box-shadow: var(--shadow-card);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
  background: rgba(0, 98, 255, 0.1);
  color: var(--brand);
  display: grid;
  place-items: center;
  margin-bottom: 1.15rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--muted-fg);
}

/* Ürün Kataloğu */
.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.catalog-filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-pill {
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--navy);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.filter-pill:hover,
.filter-pill.is-active {
  background: var(--brand);
  border-color: var(--brand);
  color: #ffffff;
}

.catalog-search-box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.catalog-search-box input {
  width: 260px;
  padding: 0.58rem 0.95rem;
  border-radius: 0.65rem;
  border: 1px solid var(--border);
  background: #ffffff;
  font-size: 0.875rem;
  outline: none;
}

.catalog-search-box input:focus {
  border-color: var(--brand);
}

.product-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-soft);
  transition: all 0.2s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 98, 255, 0.35);
  box-shadow: var(--shadow-card);
}

.product-card-img-wrap {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(180deg, #f8fafc 0%, #eef2f6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
}

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

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

.product-card-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--navy);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
}

.product-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-cat {
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand);
}

.product-card-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--navy);
  margin-top: 0.25rem;
}

.product-card-desc {
  font-size: 0.825rem;
  color: var(--muted-fg);
  margin-top: 0.35rem;
}

.product-card-specs {
  list-style: none;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border);
  font-size: 0.775rem;
  color: var(--navy);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.product-card-actions {
  margin-top: auto;
  padding-top: 1rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

/* SSS Akordiyon */
.faq-list {
  max-width: 52rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  border-radius: 0.95rem;
  border: 1px solid var(--border);
  background: #ffffff;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.faq-item-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.35rem;
  background: transparent;
  border: none;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--navy);
  text-align: left;
  cursor: pointer;
}

.faq-item-trigger svg {
  flex-shrink: 0;
  transition: transform 0.2s;
  color: var(--brand);
}

.faq-item.is-open .faq-item-trigger svg {
  transform: rotate(180deg);
}

.faq-item-content {
  display: none;
  padding: 0 1.35rem 1.25rem;
  font-size: 0.925rem;
  color: var(--muted-fg);
}

.faq-item.is-open .faq-item-content {
  display: block;
}

/* İletişim ve Proje Kartları */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2rem;
}

.contact-info-card {
  background: var(--navy);
  color: #ffffff;
  border-radius: 1.25rem;
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}

.contact-info-icon {
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 0.75rem;
  background: rgba(0, 198, 255, 0.16);
  color: var(--brand-cyan);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

/* Footer */
.site-footer {
  background: var(--navy-deep);
  color: rgba(248, 250, 252, 0.78);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-box {
  background: #ffffff;
  display: inline-block;
  padding: 0.55rem 1rem;
  border-radius: 0.75rem;
  margin-bottom: 1rem;
}

.footer-brand-box img {
  height: 3.35rem;
  width: auto;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: var(--brand-cyan);
}

.footer-bottom {
  padding-top: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-credit a {
  color: #ffffff;
  font-weight: 700;
  border-bottom: 1px dashed rgba(0, 198, 255, 0.55);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.footer-credit a:hover {
  color: var(--brand-cyan);
  border-bottom-color: var(--brand-cyan);
}

/* WhatsApp CTA & Sağ Alt Sabit İkon Grubu (İnstagram / Hesaplama / WhatsApp) */
.btn-whatsapp-cta {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  color: #ffffff;
  box-shadow: 0 10px 28px -6px rgba(37, 211, 102, 0.45);
}

.btn-whatsapp-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px -6px rgba(37, 211, 102, 0.6);
  background: linear-gradient(135deg, #2be06f 0%, #159f8f 100%);
}

.floating-action-dock {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 55;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
}

.fab-icon-btn {
  position: relative;
  width: 3.35rem;
  height: 3.35rem;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.25);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.fab-icon-btn:hover {
  transform: translateY(-3px) scale(1.06);
}

.fab-icon-btn.is-instagram {
  background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
  box-shadow: 0 10px 24px rgba(214, 36, 159, 0.38);
}

.fab-icon-btn.is-calc {
  background: linear-gradient(135deg, #0062ff 0%, #00c6ff 100%);
  box-shadow: 0 10px 24px rgba(0, 98, 255, 0.4);
}

.fab-icon-btn.is-whatsapp {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.45);
}

/* Responsive */
@media (max-width: 1024px) {
  .calc-layout-grid,
  .home-hero-grid,
  .contact-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 0.9rem;
  }
  .header-inner {
    height: 4.5rem;
    gap: 0.6rem;
  }
  .brand-logo img {
    height: 2.85rem;
    max-height: 46px;
    max-width: 165px;
  }
  .header-actions {
    gap: 0.45rem;
  }
  .header-actions .btn-sm {
    padding: 0.42rem 0.7rem;
    font-size: 0.75rem;
    white-space: nowrap;
  }
  .main-nav,
  .header-phone-pill {
    display: none;
  }
  .mobile-menu-btn {
    display: inline-flex;
  }
  .page-hero {
    padding: 2.4rem 0 2.6rem;
  }
  .page-hero h1 {
    font-size: 1.65rem;
  }
  .page-hero p {
    font-size: 0.95rem;
  }
  .home-hero {
    padding: 2.75rem 0 3.25rem;
  }
  .home-hero-title {
    font-size: 1.85rem;
  }
  .home-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
  }
  .hero-stat-num {
    font-size: 1.3rem;
  }
  .calc-section {
    padding: 1.5rem 0 3rem;
  }
  .calc-config-card {
    padding: 1.2rem 0.95rem 1.1rem;
    border-radius: 1.1rem;
  }
  .calc-config-head {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .calc-config-heading {
    font-size: 1.05rem;
  }
  .calc-step-box {
    padding: 0.85rem 0.8rem;
  }
  .calc-env-grid {
    gap: 0.55rem;
  }
  .calc-env-title {
    padding: 0.45rem 0.5rem;
    font-size: 0.7rem;
  }
  .calc-picker-row {
    gap: 0.35rem;
  }
  .calc-picker-trigger {
    padding: 0.48rem 0.55rem;
    gap: 0.5rem;
  }
  .calc-picker-thumb {
    width: 2.1rem;
    height: 2.1rem;
  }
  .calc-picker-title {
    font-size: 0.78rem;
  }
  .calc-picker-meta {
    font-size: 0.68rem;
  }
  .calc-detail-btn,
  .calc-files-btn {
    width: 42px;
    height: 42px;
  }
  .calc-popover {
    left: 0;
    right: -46px;
    max-width: calc(100vw - 2.2rem);
  }
  .calc-case-toggle {
    flex-wrap: wrap;
    padding: 0.7rem 0.85rem;
    gap: 0.5rem;
  }
  .calc-case-legend {
    margin-left: 0;
    width: 100%;
    padding-left: 1.75rem;
  }
  .calc-bom-card {
    padding: 1rem 0.9rem;
  }
  .calc-bom-header {
    flex-wrap: wrap;
  }
  .calc-bom-item {
    flex-wrap: wrap;
    gap: 0.55rem;
  }
  .calc-bom-info {
    flex: 1 1 calc(100% - 3.5rem);
  }
  .calc-bom-name {
    font-size: 0.82rem;
    word-break: break-word;
  }
  .calc-bom-qty {
    margin-left: auto;
    font-size: 0.75rem;
    padding: 0.25rem 0.65rem;
  }
  .calc-quote-btn {
    font-size: 0.9rem;
    padding: 0.85rem 1rem;
  }
  .catalog-search-box,
  .catalog-search-box input {
    width: 100%;
  }
  .floating-action-dock {
    right: 0.85rem;
    bottom: 1rem;
    gap: 0.55rem;
  }
  .fab-icon-btn {
    width: 2.95rem;
    height: 2.95rem;
  }
  .grid-3,
  .grid-4,
  .calc-metrics-grid,
  .form-row-2,
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .topbar-right {
    display: none;
  }
}

@media (max-width: 480px) {
  .calc-dims-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.65rem;
  }
  .calc-env-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .home-hero-stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.75rem;
  }
  .header-actions .btn-sm {
    display: none;
  }
}