/* ==========================================================================
   DRC COOLING — TECH INDUSTRIAL DARK PREMIUM (v4)
   Palette: Slate 950 · Emerald 400 · Amber 200 · Glassmorphism
   Fonts: Fraunces (headline) + Inter Tight (body) + JetBrains Mono (SKU)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,500;9..144,700;9..144,900&family=Inter+Tight:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

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

:root {
  /* --- CORE PALETTE --- */
  --bg-primary: #020617;          /* Slate 950 */
  --bg-secondary: #0f172a;        /* Slate 900 */
  --bg-tertiary: #1e293b;         /* Slate 800 */
  --bg-card: rgba(15, 23, 42, 0.6);
  --bg-glass: rgba(255, 255, 255, 0.03);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-active: rgba(52, 211, 153, 0.35);

  --text-primary: #f8fafc;        /* Slate 50 */
  --text: #cbd5e1;                /* Slate 300 */
  --text-muted: #94a3b8;          /* Slate 400 */
  --text-subtle: #64748b;         /* Slate 500 */
  --text-dim: #475569;            /* Slate 600 */

  --accent-emerald: #10b981;       /* Emerald 500 */
  --accent-emerald-bright: #34d399;/* Emerald 400 */
  --accent-emerald-glow: #6ee7b7;  /* Emerald 300 */
  --accent-amber: #fde68a;         /* Amber 200 - highlight */
  --accent-amber-warm: #fbbf24;    /* Amber 400 */
  --accent-cyan: #22d3ee;          /* Cyan 400 - data */

  --accent-danger: #f87171;        /* Red 400 */

  /* --- FONTS --- */
  --font-display: 'Fraunces', 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter Tight', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  /* --- RADIUS --- */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* --- SHADOW --- */
  --shadow-glow: 0 0 24px rgba(52, 211, 153, 0.15), 0 0 48px rgba(52, 211, 153, 0.06);
  --shadow-glow-strong: 0 0 32px rgba(52, 211, 153, 0.35), 0 0 64px rgba(52, 211, 153, 0.15);
  --shadow-card: 0 4px 24px -8px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.05);
  --shadow-lift: 0 20px 40px -16px rgba(0, 0, 0, 0.6), 0 8px 16px -8px rgba(0, 0, 0, 0.3);

  /* --- TRANSITIONS --- */
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- BASE --- */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-feature-settings: 'ss01', 'cv11', 'cv02';
  background: var(--bg-primary);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: -0.011em;
  min-height: 100vh;
  overflow-x: hidden;

  /* Sophisticated micro-grid pattern */
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(52, 211, 153, 0.06), transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 100%, rgba(34, 211, 238, 0.03), transparent 55%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: auto, auto, 48px 48px, 48px 48px;
  background-position: 0 0, 0 0, 0 0, 0 0;
}

/* --- TYPOGRAPHY --- */
h1, h2, h3, .display {
  font-family: var(--font-display);
  color: var(--text-primary);
  letter-spacing: -0.03em;
  line-height: 1.1;
  font-weight: 500;
  font-variation-settings: "opsz" 96;
}

h1 { font-size: clamp(2.6rem, 5vw, 4.2rem); font-weight: 500; }
h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 500; }
h3 { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-emerald-bright);
}
.kicker::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--accent-emerald-bright);
}

.mono { font-family: var(--font-mono); }
.serif { font-family: var(--font-display); }

/* Accent gradient text */
.gradient-text {
  background: linear-gradient(135deg, var(--accent-emerald-bright) 0%, var(--accent-amber) 50%, var(--accent-emerald-glow) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* --- CONTAINER --- */
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 24px; }

section {
  padding: 96px 0;
  position: relative;
}

/* --- HEADER --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-top: 16px;
  padding-bottom: 16px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.025em;
  text-decoration: none;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-emerald-bright) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #052e16;
  font-weight: 800;
  font-family: var(--font-sans);
  font-size: 1rem;
  box-shadow: var(--shadow-glow);
}
.logo-sub {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-subtle);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}

nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
nav a {
  display: block;
  padding: 8px 14px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-xs);
  transition: var(--transition);
  position: relative;
}
nav a:hover, nav a.active {
  color: var(--text-primary);
  background: var(--bg-glass);
}
nav a.active::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--accent-emerald-bright);
  border-radius: 2px;
}

.header-cta {
  display: flex;
  gap: 8px;
  margin-left: 12px;
}

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-emerald-bright) 100%);
  color: #042f2e;
  box-shadow: 0 8px 24px -8px rgba(52, 211, 153, 0.5);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 32px -8px rgba(52, 211, 153, 0.6), var(--shadow-glow);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--accent-emerald-bright);
  background: rgba(52, 211, 153, 0.05);
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  color: #fff;
}
.btn-whatsapp:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px -8px rgba(37, 211, 102, 0.5);
}

.btn-ghost {
  background: var(--bg-glass);
  color: var(--text);
  border: 1px solid var(--border-subtle);
}
.btn-ghost:hover {
  border-color: var(--accent-emerald-bright);
  color: var(--text-primary);
}

/* --- HERO --- */
.hero {
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-content { max-width: 640px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(52, 211, 153, 0.08);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: 999px;
  color: var(--accent-emerald-bright);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  margin-bottom: 28px;
}
.hero-badge i { font-size: 0.72rem; }

.hero h1 {
  margin-bottom: 24px;
}
.hero-desc {
  color: var(--text-muted);
  font-size: 1.075rem;
  line-height: 1.7;
  margin-bottom: 40px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--border-subtle);
}
.stat-value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.035em;
  line-height: 1;
  font-variation-settings: "opsz" 96;
}
.stat-label {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-subtle);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 8px;
}

/* --- HERO CONTROLLER MOCKUP (glassmorphism) --- */
.controller-panel {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(30, 41, 59, 0.7) 100%);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-lift), var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
.controller-panel::before {
  content: '';
  position: absolute;
  top: -50%; right: -30%;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.15) 0%, transparent 70%);
  pointer-events: none;
}
.controller-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 24px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.status-active {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(52, 211, 153, 0.12);
  border: 1px solid rgba(52, 211, 153, 0.3);
  border-radius: var(--radius-xs);
  color: var(--accent-emerald-bright);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.status-active::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald-bright);
  box-shadow: 0 0 8px var(--accent-emerald-bright);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.readouts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.readout {
  padding: 16px 20px;
  background: rgba(2, 6, 23, 0.5);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}
.readout-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.readout-value {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variation-settings: "opsz" 96;
}
.readout-value.temp { color: var(--accent-danger); }
.readout-value.hum { color: var(--accent-emerald-bright); }
.readout-unit {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
  margin-left: 4px;
}

.led-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}
.led-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.led-chip::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
}
.led-chip.active { color: var(--accent-emerald-bright); border-color: var(--border-active); }
.led-chip.active::before { background: var(--accent-emerald-bright); box-shadow: 0 0 6px var(--accent-emerald-bright); }

.keypad {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}
.key {
  padding: 10px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: var(--transition);
}
.key i { font-size: 0.9rem; color: var(--accent-emerald-bright); }
.key:hover {
  background: rgba(30, 41, 59, 0.9);
  border-color: var(--accent-emerald-bright);
  color: var(--text-primary);
}

/* --- SECTION HEADER --- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 64px;
}
.section-header .kicker {
  margin-bottom: 20px;
  justify-content: center;
}
.section-header h2 { margin-bottom: 16px; }
.section-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* --- CATEGORY FILTERS --- */
.catalog-search {
  max-width: 640px;
  margin: 0 auto 40px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 6px 6px 20px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: var(--transition);
}
.catalog-search:focus-within {
  border-color: var(--accent-emerald-bright);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.08);
}
.catalog-search i { color: var(--text-subtle); font-size: 0.9rem; }
.catalog-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 8px 0;
}
.catalog-search input::placeholder { color: var(--text-subtle); }

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 64px;
}
.filter-btn {
  padding: 8px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.83rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.filter-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-active);
}
.filter-btn.active {
  background: rgba(52, 211, 153, 0.1);
  border-color: var(--accent-emerald-bright);
  color: var(--accent-emerald-bright);
  font-weight: 600;
}

/* --- PRODUCTS GRID --- */
#products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.product-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  outline: none;
}
.product-card:focus-visible {
  border-color: var(--accent-emerald-bright);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.15);
}
.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-emerald-bright);
  box-shadow: var(--shadow-lift), 0 0 32px -8px rgba(52, 211, 153, 0.25);
}
.product-card:hover .product-img { transform: scale(1.04); }

.product-visual-box {
  position: relative;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.4) 0%, rgba(15, 23, 42, 0.6) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}
.product-visual-box::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.03) 1px, transparent 0);
  background-size: 20px 20px;
  pointer-events: none;
}
.product-img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.4));
}

.model-pill {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent-amber);
  letter-spacing: 0.05em;
  z-index: 2;
}

.yerli-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(52, 211, 153, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(52, 211, 153, 0.4);
  border-radius: 999px;
  font-size: 0.66rem;
  font-weight: 700;
  color: var(--accent-emerald-bright);
  letter-spacing: 0.03em;
  z-index: 2;
}

.product-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.product-category-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent-emerald-bright);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.product-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.product-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.6;
}

.product-price-row {
  margin-top: 8px;
  padding: 14px 16px;
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.08) 0%, rgba(34, 211, 238, 0.04) 100%);
  border: 1px solid rgba(52, 211, 153, 0.15);
  border-radius: var(--radius-md);
}
.price-container { display: flex; align-items: baseline; gap: 8px; }
.price-tag {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent-emerald-bright);
  letter-spacing: -0.03em;
}
.price-tag.price-anfrage { font-size: 1.05rem; color: var(--accent-cyan); }
.price-old {
  font-size: 0.85rem;
  color: var(--text-subtle);
  text-decoration: line-through;
}
.price-note {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-subtle);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.product-spec-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.spec-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
}
.spec-chip i { font-size: 0.68rem; color: var(--accent-emerald-bright); }

.product-card-footer {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 16px 20px 20px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}
.product-card-footer .btn { justify-content: center; font-size: 0.82rem; padding: 9px 12px; }

/* --- WIZARD / PARAMETRE --- */
.wizard-card {
  max-width: 960px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-card);
}
.wizard-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  margin-bottom: 32px;
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-emerald) 0%, var(--accent-emerald-bright) 100%);
  color: #042f2e;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  box-shadow: var(--shadow-glow);
}
.step-body h4 {
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.wizard-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
}
.wizard-select:focus {
  outline: none;
  border-color: var(--accent-emerald-bright);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.1);
}

/* --- MODBUS / IoT SECTION --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.feature-card {
  padding: 32px 28px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.feature-card:hover {
  border-color: var(--border-active);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}
.feature-icon {
  width: 48px; height: 48px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.25);
  border-radius: var(--radius-md);
  color: var(--accent-emerald-bright);
  font-size: 1.15rem;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* --- HAKKIMIZDA --- */
.about-card {
  max-width: 900px;
  margin: 0 auto;
  padding: 48px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}
.about-badges {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin: 24px 0;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text);
  letter-spacing: 0.03em;
}
.badge-green { background: rgba(52, 211, 153, 0.1); border-color: rgba(52, 211, 153, 0.3); color: var(--accent-emerald-bright); }
.badge-amber { background: rgba(251, 191, 36, 0.1); border-color: rgba(251, 191, 36, 0.3); color: var(--accent-amber-warm); }

/* --- İLETİŞİM --- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}
.contact-card {
  padding: 28px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.contact-card:hover {
  border-color: var(--border-active);
  transform: translateY(-2px);
}
.contact-card h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 14px;
}
.contact-card h4 i { color: var(--accent-emerald-bright); }
.contact-card p, .contact-card a {
  display: block;
  color: var(--text);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 3px 0;
  transition: color 0.2s;
}
.contact-card a:hover { color: var(--accent-emerald-bright); }

/* --- FOOTER --- */
footer {
  padding: 80px 0 32px;
  background: rgba(2, 6, 23, 0.6);
  border-top: 1px solid var(--border-subtle);
  margin-top: 96px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand h3 {
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 12px;
  letter-spacing: -0.025em;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  max-width: 400px;
}
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 20px;
}
.footer-col ul { list-style: none; }
.footer-col li a {
  display: block;
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 6px 0;
  text-decoration: none;
  transition: color 0.2s;
}
.footer-col li a:hover { color: var(--accent-emerald-bright); }
.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-subtle);
  font-size: 0.82rem;
  text-align: center;
  line-height: 1.7;
}

/* --- MOBILE --- */
@media (max-width: 1023px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  nav ul { display: none; }
  section { padding: 64px 0; }
  .wizard-card { padding: 32px 24px; }
  .about-card { padding: 32px 24px; }
}

@media (max-width: 640px) {
  .hero { padding: 80px 0 40px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  h1 { font-size: 2.2rem; }
  section { padding: 56px 0; }
  #products-grid { grid-template-columns: 1fr; }
  .catalog-search { padding: 4px 4px 4px 16px; }
  .header-cta .btn-outline { display: none; }
}

/* --- MODAL --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(2, 6, 23, 0.75);
  backdrop-filter: blur(12px);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 20px;
  overflow-y: auto;
}
.modal-overlay.active { display: flex; }
.modal-body {
  width: 100%;
  max-width: 640px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lift);
  animation: modal-in 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(24px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-emerald-bright);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.1);
}

/* --- TOAST --- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: rgba(2, 6, 23, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--accent-emerald-bright);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.92rem;
  box-shadow: var(--shadow-lift), var(--shadow-glow);
  animation: toast-in 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 420px;
}
@keyframes toast-in {
  from { opacity: 0; transform: translateX(24px); }
  to { opacity: 1; transform: translateX(0); }
}