/* ============================================================
   Mat-Tek Mühendislik — Editorial Bold custom styles
   Tailwind CDN'i tamamlayıcı stiller. Build adımı yok.
   ============================================================ */

:root {
  --vaillant-green: #00806E;
  --vaillant-green-light: #1D9E75;
  --editorial-bg: #f5f5f0;
  --editorial-ink: #1a2e2a;
  --editorial-muted: #8a8a82;
  --accent-cream: #faf8f3;
  --ink-dark: #0d1f1b;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--editorial-ink);
  background: var(--editorial-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'ss01', 'cv11';
}

.font-display {
  font-family: 'Playfair Display', Georgia, serif;
  font-feature-settings: 'liga', 'dlig';
}

.font-mono-tag {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.7rem;
}

/* === Hero split layout (anasayfa) === */
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  min-height: 86vh;
  border-bottom: 1px solid var(--ink-dark);
  background: var(--editorial-bg);
}

.hero-left {
  padding: clamp(2.5rem, 5vw, 4.5rem) clamp(1.5rem, 4vw, 4rem);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--editorial-bg);
  position: relative;
  gap: 2rem;
}

.hero-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: var(--vaillant-green);
  text-transform: uppercase;
}

.hero-eyebrow::before {
  content: '№ 01 · ';
  color: var(--ink-dark);
  opacity: 0.5;
}

/* Slogan + Vaillant logo row */
.hero-slogan-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin: 1rem 0;
}

.hero-slogan-stack {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.hero-vaillant-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  padding-left: clamp(1rem, 2.2vw, 2rem);
  border-left: 1px solid rgba(26, 46, 42, 0.18);
  flex-shrink: 0;
}

.hero-vaillant-col img {
  width: clamp(180px, 24vw, 340px);
  height: auto;
  display: block;
}

.hero-vaillant-col .badge-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--vaillant-green);
  text-transform: uppercase;
  font-weight: 700;
  text-align: center;
  line-height: 1.4;
}

@media (max-width: 900px) {
  .hero-slogan-row { grid-template-columns: 1fr; gap: 1.75rem; }
  .hero-vaillant-col {
    border-left: none;
    border-top: 1px solid rgba(26, 46, 42, 0.18);
    padding-left: 0;
    padding-top: 1.25rem;
    align-items: flex-start;
    flex-direction: row;
  }
  .hero-vaillant-col .badge-tag { text-align: left; }
}

.hero-bottom {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 2rem;
}

.hero-desc {
  font-size: 1rem;
  color: var(--editorial-ink);
  line-height: 1.55;
  max-width: 26rem;
  font-weight: 500;
}

.hero-cities {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--editorial-ink);
  font-weight: 700;
  text-align: right;
  line-height: 1.7;
  flex-shrink: 0;
}

.hero-cities b {
  font-size: 13px;
  color: var(--vaillant-green);
  display: block;
  margin-bottom: 4px;
}

.hero-right {
  background: var(--vaillant-green) url('../images/banner.jpg') center/cover;
  padding: clamp(2.5rem, 4.5vw, 4rem);
  color: white;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 100%;
  gap: 2rem;
}

.hero-right::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13,31,27,0.15) 0%, rgba(0,128,110,0.78) 100%);
  z-index: 1;
}

.hero-right-content,
.hero-cta-block {
  position: relative;
  z-index: 2;
}

.hero-r-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.85);
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-r-slogan {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 900;
  font-size: clamp(2.5rem, 5.5vw, 4.4rem);
  letter-spacing: -0.03em;
  line-height: 0.95;
  margin-bottom: 1.25rem;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.hero-r-slogan em {
  font-style: italic;
  color: white;
  font-weight: 400;
}

.hero-r-desc {
  font-size: 1rem;
  line-height: 1.6;
  opacity: 0.95;
  max-width: 30rem;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.3);
}

.hero-cta-block {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 28rem;
}

@media (max-width: 900px) {
  .hero-split {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .hero-right {
    min-height: 60vh;
  }
}

/* === Hero slogan stack lines (works inside .hero-slogan-stack) === */
.hero-line {
  font-family: 'Playfair Display', Georgia, serif;
  font-weight: 900;
  line-height: 0.85;
  letter-spacing: -0.04em;
  display: block;
}

.hero-line--sicak {
  color: var(--vaillant-green);
  font-size: clamp(3rem, 7vw, 6.5rem);
}

.hero-line--ev {
  font-style: italic;
  color: var(--editorial-ink);
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  margin-left: clamp(0.75rem, 3vw, 2.5rem);
}

.hero-line--yanlis {
  font-family: 'Inter', sans-serif;
  font-weight: 800;
  color: var(--editorial-muted);
  text-decoration: line-through;
  text-decoration-thickness: 0.06em;
  font-size: clamp(2rem, 5vw, 4.5rem);
  margin-left: clamp(1.5rem, 6vw, 5rem);
  letter-spacing: -0.03em;
}

.hero-line--dogru {
  font-style: italic;
  color: var(--vaillant-green);
  font-size: clamp(2.6rem, 6vw, 5.5rem);
  margin-left: clamp(0.75rem, 4vw, 3.5rem);
  position: relative;
}

.hero-line--dogru::before {
  content: '↳';
  position: absolute;
  left: -1em;
  top: 0.1em;
  font-size: 0.4em;
  color: var(--vaillant-green);
  font-style: normal;
  font-weight: 400;
}

.hero-line--kombi {
  font-family: 'Inter', sans-serif;
  font-weight: 900;
  color: var(--editorial-ink);
  font-size: clamp(3rem, 7vw, 6.5rem);
  letter-spacing: -0.05em;
}

/* === Section dividers === */
.editorial-divider {
  border-top: 1px solid var(--editorial-ink);
  opacity: 0.15;
}

/* === Number tags === */
.number-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--vaillant-green);
  text-transform: uppercase;
}

/* === Editorial italic accent === */
.italic-accent {
  font-family: 'Playfair Display', Georgia, serif;
  font-style: italic;
  font-weight: 400;
}

/* === Buttons === */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--vaillant-green);
  color: white;
  padding: 1rem 2rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.2s ease;
  border: 2px solid var(--vaillant-green);
  text-decoration: none;
}

.btn-primary:hover {
  background: var(--vaillant-green-light);
  border-color: var(--vaillant-green-light);
  transform: translateY(-1px);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--editorial-ink);
  padding: 1rem 2rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 2px solid var(--editorial-ink);
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-outline:hover {
  background: var(--editorial-ink);
  color: white;
}

.btn-outline-light {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.4);
}

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

/* === Service card === */
.service-card {
  background: white;
  padding: 2.5rem 2rem;
  border: 1px solid rgba(26, 46, 42, 0.08);
  transition: all 0.25s ease;
  display: block;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  border-color: var(--vaillant-green);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -16px rgba(0, 128, 110, 0.25);
}

.service-card::after {
  content: '→';
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--vaillant-green);
  font-size: 1.5rem;
  opacity: 0;
  transition: all 0.25s ease;
}

.service-card:hover::after {
  opacity: 1;
  right: 1rem;
}

/* === Brand logo bar === */
.brand-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 2rem;
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  color: var(--editorial-ink);
  border-right: 1px solid rgba(26, 46, 42, 0.1);
  letter-spacing: 0.04em;
  font-weight: 700;
}

.brand-item:last-child {
  border-right: none;
}

.brand-item--featured {
  color: var(--vaillant-green);
  font-size: 2rem;
}

/* === WhatsApp FAB === */
.whatsapp-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.4);
  z-index: 50;
  transition: all 0.2s ease;
}

.whatsapp-fab:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 32px rgba(37, 211, 102, 0.5);
}

.whatsapp-fab svg {
  width: 32px;
  height: 32px;
  fill: white;
}

/* === Section heading === */
.section-eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--vaillant-green);
  margin-bottom: 1.5rem;
  display: block;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-weight: 900;
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  color: var(--editorial-ink);
}

.section-title em {
  font-style: italic;
  color: var(--vaillant-green);
  font-weight: 400;
}

/* === Process step === */
.process-step {
  border-top: 2px solid var(--editorial-ink);
  padding-top: 1.5rem;
}

.process-step__num {
  font-family: 'Playfair Display', serif;
  font-size: 4rem;
  font-weight: 900;
  color: var(--vaillant-green);
  line-height: 1;
  font-style: italic;
}

/* === Mobile menu === */
.mobile-menu {
  display: none;
}

.mobile-menu.is-open {
  display: block;
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
}

/* === Form === */
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: white;
  border: 1px solid rgba(26, 46, 42, 0.2);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--editorial-ink);
  transition: border-color 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--vaillant-green);
}

.form-label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--editorial-ink);
  margin-bottom: 0.5rem;
  font-weight: 600;
  font-family: 'JetBrains Mono', monospace;
}

/* === Quote / pull quote === */
.pull-quote {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  line-height: 1.2;
  color: var(--editorial-ink);
  font-weight: 400;
}

.pull-quote--light {
  color: white;
}

/* === FAQ === */
details.faq {
  border-top: 1px solid rgba(26, 46, 42, 0.15);
  padding: 1.5rem 0;
}

details.faq[open] summary {
  color: var(--vaillant-green);
}

details.faq summary {
  cursor: pointer;
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: color 0.2s ease;
}

details.faq summary::-webkit-details-marker {
  display: none;
}

details.faq summary::after {
  content: '+';
  font-size: 2rem;
  color: var(--vaillant-green);
  transition: transform 0.2s ease;
}

details.faq[open] summary::after {
  transform: rotate(45deg);
}

details.faq .faq-answer {
  margin-top: 1rem;
  color: var(--editorial-muted);
  line-height: 1.7;
}