/* ══════════════════════════════════════════
   style.css  –  Bircan Elektrik Mühendislik
   ══════════════════════════════════════════
   BÖLÜMLER (Ctrl+F ile bulun):
   1. RESET & TOKENS
   2. BODY / ARKA PLAN
   3. NAV
   4. HERO
   5. INSTAGRAM
   6. SECTION DIVIDER
   7. VIZYON
   8. SERVICES (Hizmetler)
   9. REHBER
  10. TEAM (Ekip)
  11. CONTACT (İletişim)
  12. FOOTER
  13. POPUP
  14. TEKNİK REHBER (cat / tab / lumen / kelvin / armatür / tesisat)
  15. MOBILE (@media)
   ══════════════════════════════════════════ */


/* ── 1. RESET & TOKENS ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --black: #0f0f0f; --white: #f8f7f4; --gold: #b8963e;
  --gray: #6b6b6b; --gray-light: #e8e7e3; --radius: 12px;
}
html { scroll-behavior: smooth; }


/* ── 2. BODY / ARKA PLAN ── */
body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--white);
  color: var(--black);
  overflow-x: hidden;
}
body::before {
  content: ''; position: fixed; inset: 0; z-index: -1;
  background-color: #f2f4f0;
  background-image:
    linear-gradient(rgba(44,74,44,0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(44,74,44,0.1) 1px, transparent 1px),
    linear-gradient(rgba(44,74,44,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(44,74,44,0.045) 1px, transparent 1px);
  background-size: 80px 80px, 80px 80px, 20px 20px, 20px 20px;
  background-position: -1px -1px, -1px -1px, -1px -1px, -1px -1px;
}


/* ── 3. NAV ── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 2rem;
  background: rgba(248,247,244,0.95); backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0,0,0,0.07);
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo img { width: 40px; height: 40px; object-fit: contain; }
.nav-brand { font-weight: 700; font-size: 16px; color: var(--black); line-height: 1.1; letter-spacing: -0.02em; }
.nav-sub { font-size: 9px; color: var(--gray); letter-spacing: 0.1em; text-transform: uppercase; }
.nav-links { display: flex; gap: 0; }
.nav-links a {
  font-size: 13px; color: var(--gray); text-decoration: none;
  padding: 6px 14px; border-radius: 99px;
  transition: color .2s, background .2s; position: relative;
}
.nav-links a:hover { color: var(--black); }
.nav-links a.active { color: var(--black); font-weight: 600; background: rgba(0,0,0,0.06); }
.nav-cta {
  background: var(--black); color: var(--white); border: none; border-radius: 99px;
  padding: 8px 20px; font-size: 13px; font-family: 'Plus Jakarta Sans', sans-serif;
  cursor: pointer; transition: opacity .2s;
}
.nav-cta:hover { opacity: 0.8; }


/* ── 4. HERO ── */
.hero {
  min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr;
  align-items: center; padding: 6rem 4rem 4rem; gap: 4rem;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--black); color: var(--white); font-size: 11px;
  letter-spacing: 0.08em; padding: 5px 14px; border-radius: 99px; margin-bottom: 2rem;
}
.hero-badge span {
  width: 6px; height: 6px; border-radius: 50%;
  background: #4ade80; display: inline-block; animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.4} }
.hero h1 {
  font-weight: 700; letter-spacing: -0.03em;
  font-size: clamp(2.4rem,4.5vw,3.8rem); line-height: 1.05; margin-bottom: 1.25rem;
}
.hero p { font-size: 15px; line-height: 1.75; color: var(--gray); max-width: 440px; margin-bottom: 2rem; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn-primary {
  background: var(--black); color: var(--white); padding: 13px 26px;
  border-radius: 99px; font-size: 14px; text-decoration: none;
  border: none; font-family: 'Plus Jakarta Sans', sans-serif; cursor: pointer; transition: opacity .2s;
}
.btn-primary:hover { opacity: 0.8; }
.hero-right { display: flex; flex-direction: column; gap: 12px; }
.stat-strip { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.stat-box { background: rgba(15,15,15,0.88); color: var(--white); border-radius: var(--radius); padding: 1.4rem 1rem; text-align: center; }
.stat-box.light { background: rgba(255,255,255,0.75); backdrop-filter: blur(8px); color: var(--black); border: 1px solid var(--gray-light); }
.stat-num { font-weight: 700; letter-spacing: -0.03em; font-size: 1.5rem; display: block; }
.stat-lbl { font-size: 11px; opacity: 0.65; }
.map-box { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--gray-light); height: 200px; position: relative; }
.map-box iframe { width: 100%; height: 100%; border: none; }
.map-overlay { position: absolute; bottom: 10px; left: 10px; background: var(--black); color: var(--white); border-radius: 8px; padding: 6px 12px; font-size: 11px; }


/* ── 5. INSTAGRAM ── */
.ig-section { padding: 0 4rem 1rem; }
.ig-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.ig-header span { font-size: 12px; color: var(--gray); display: flex; align-items: center; gap: 6px; }
.ig-header a { font-size: 12px; color: var(--black); text-decoration: none; font-weight: 600; display: flex; align-items: center; gap: 4px; }
.ig-header a:hover { color: var(--gold); }
.ig-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.ig-card {
  aspect-ratio: 1; border-radius: 10px; overflow: hidden;
  background: var(--gray-light); border: 1px solid var(--gray-light);
  display: flex; align-items: center; justify-content: center;
  position: relative; cursor: pointer; transition: transform .2s; text-decoration: none;
}
.ig-card:hover { transform: scale(1.02); }
.ig-card-inner { text-align: center; padding: 1rem; }
.ig-card-icon { font-size: 28px; margin-bottom: 6px; }
.ig-card-label { font-size: 10px; color: var(--gray); line-height: 1.4; }
.ig-cta {
  margin-top: 10px; display: flex; align-items: center; justify-content: center; gap: 8px;
  background: rgba(220,39,67,0.12); color: #b5254a;
  border: 1px solid rgba(220,39,67,0.2); border-radius: var(--radius); padding: 12px;
  text-decoration: none; font-size: 13px; font-weight: 600; transition: background .2s;
}
.ig-cta:hover { background: rgba(220,39,67,0.18); }


/* ── 6. SECTION DIVIDER ── */
.section-divider { display: flex; align-items: center; gap: 1rem; padding: 0 4rem; margin-bottom: 3rem; }
.section-divider hr { flex: 1; border: none; border-top: 1px solid var(--gray-light); }
.section-divider span { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--gray); white-space: nowrap; }


/* ── 7. VIZYON ── */
#vizyon { padding: 5rem 4rem; background: var(--black); color: var(--white); }
.vizyon-inner { max-width: 820px; margin: 0 auto; }
.vizyon-label { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.5rem; }
.vizyon-quote {
  font-weight: 600; letter-spacing: -0.02em; font-size: clamp(1.25rem,2.5vw,1.75rem);
  line-height: 1.55; color: rgba(255,255,255,0.92); margin-bottom: 2rem;
  border-left: 3px solid var(--gold); padding-left: 1.5rem;
}
.vizyon-ilke {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(184,150,62,0.12); border: 1px solid rgba(184,150,62,0.3);
  border-radius: var(--radius); padding: 1rem 1.5rem; font-size: 14px; color: var(--gold); font-style: italic;
}
.vizyon-pillars { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin-top: 2.5rem; }
.pillar { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 1.25rem; }
.pillar-icon { font-size: 20px; margin-bottom: 8px; }
.pillar-title { font-size: 13px; font-weight: 500; margin-bottom: 4px; }
.pillar-desc { font-size: 12px; color: rgba(255,255,255,0.45); line-height: 1.5; }


/* ── 8. SERVICES ── */
#hizmetler { padding: 5rem 4rem; }
#hizmetler > h2, #rehber > h2 { font-weight: 700; letter-spacing: -0.02em; font-size: clamp(1.8rem,3vw,2.8rem); margin-bottom: 0.5rem; }
#hizmetler > p, #rehber > p  { color: var(--gray); margin-bottom: 2.5rem; font-size: 15px; }
.services-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(210px,1fr)); gap: 12px; margin-bottom: 1.5rem; }
.svc-card {
  background: var(--white); border: 1px solid var(--gray-light);
  border-radius: var(--radius); padding: 1.25rem; cursor: pointer;
  transition: border-color .2s, transform .2s; position: relative; overflow: hidden;
}
.svc-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--black); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.svc-card:hover { border-color: rgba(0,0,0,0.25); transform: translateY(-2px); }
.svc-card:hover::before, .svc-card.active::before { transform: scaleX(1); }
.svc-card.active { border-color: var(--black); background: var(--black); color: var(--white); }
.svc-card.active .svc-title { color: var(--white); }
.svc-card.active .svc-desc  { color: rgba(255,255,255,0.6); }
.svc-card.active .svc-tag   { background: rgba(255,255,255,0.15); color: rgba(255,255,255,0.8); }
.svc-icon  { font-size: 22px; margin-bottom: 10px; display: block; }
.svc-title { font-size: 13px; font-weight: 600; margin-bottom: 4px; color: var(--black); }
.svc-desc  { font-size: 11px; color: var(--gray); line-height: 1.5; }
.svc-tag   { display: inline-block; margin-top: 8px; font-size: 10px; padding: 2px 8px; border-radius: 99px; background: var(--gray-light); color: var(--gray); }
.detail-box {
  background: var(--black); color: var(--white); border-radius: var(--radius);
  padding: 2rem; display: none; animation: fadeIn .3s ease;
}
@keyframes fadeIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:none} }
.detail-box.visible { display: block; }
.detail-box h3 { font-weight: 700; font-size: 1.5rem; margin-bottom: 0.5rem; }
.detail-box p  { color: rgba(255,255,255,0.65); margin-bottom: 1.25rem; line-height: 1.6; font-size: 14px; }
.features-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.feat-pill {
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 99px; padding: 5px 14px; font-size: 12px; color: rgba(255,255,255,0.85);
}


/* ── 9. REHBER ── */
#rehber { padding: 5rem 4rem; }
.rfbtn {
  background: var(--white); border: 1px solid var(--gray-light); border-radius: 99px;
  padding: 6px 16px; font-size: 12px; font-family: 'Plus Jakarta Sans',sans-serif;
  cursor: pointer; transition: all .2s; color: var(--gray);
}
.rfbtn:hover, .rfbtn.active { background: var(--black); color: var(--white); border-color: var(--black); }
.rehber-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(300px,1fr)); gap: 14px; }
.rcard { background: var(--white); border: 1px solid var(--gray-light); border-radius: var(--radius); overflow: hidden; transition: transform .2s, border-color .2s; cursor: pointer; }
.rcard:hover { transform: translateY(-2px); border-color: rgba(0,0,0,0.2); }
.rcard-head { padding: 1.25rem 1.25rem 0.75rem; display: flex; align-items: flex-start; gap: 12px; }
.rcard-icon { width: 38px; height: 38px; border-radius: 8px; background: var(--gray-light); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.rcard-icon.gold { background: #fdf8f0; }
.rcard-icon.dark { background: var(--black); }
.rcard-meta  { font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--gold); margin-bottom: 4px; }
.rcard-title { font-size: 14px; font-weight: 600; color: var(--black); line-height: 1.3; }
.rcard-audience { display: inline-block; font-size: 10px; padding: 2px 8px; border-radius: 99px; margin: 0 1.25rem 0.75rem; }
.rcard-body { display: none; padding: 0 1.25rem 1.25rem; border-top: 1px solid var(--gray-light); margin-top: 0.5rem; }
.rcard-body.open { display: block; }
.rcard-body p { font-size: 13px; color: var(--gray); line-height: 1.7; margin: 0.75rem 0 0.5rem; }
.rcard-steps { list-style: none; margin: 0.75rem 0; }
.rcard-steps li { font-size: 13px; color: var(--black); padding: 6px 0 6px 1.5rem; border-bottom: 1px solid var(--gray-light); position: relative; line-height: 1.5; }
.rcard-steps li:last-child { border-bottom: none; }
.rcard-steps li::before { content: attr(data-n); position: absolute; left: 0; font-weight: 700; color: var(--gold); font-size: 12px; top: 7px; }
.rcard-tip  { background: #fdf8f0; border-left: 3px solid var(--gold); border-radius: 0 6px 6px 0; padding: 8px 12px; font-size: 12px; color: #7a6030; margin-top: 0.75rem; line-height: 1.6; }
.rcard-warn { background: #fff5f5; border-left: 3px solid #e05; border-radius: 0 6px 6px 0; padding: 8px 12px; font-size: 12px; color: #900; margin-top: 0.75rem; line-height: 1.6; }


/* ── 10. TEAM ── */
#ekip { padding: 5rem 4rem; background: var(--black); color: var(--white); }
.team-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(280px,1fr)); gap: 16px; }
.team-card { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 1.75rem; }
.team-role { font-size: 10px; letter-spacing: .12em; text-transform: uppercase; color: var(--gold); margin-bottom: 0.75rem; }
.team-name { font-weight: 700; font-size: 1.6rem; letter-spacing: -0.02em; margin-bottom: 0.4rem; }
.team-desc { font-size: 13px; color: rgba(255,255,255,0.5); line-height: 1.7; margin-bottom: 1.25rem; }
.team-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 1.25rem; }
.team-tag  { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.12); border-radius: 99px; padding: 4px 12px; font-size: 11px; color: rgba(255,255,255,0.7); }
.team-phone {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.15);
  border-radius: 99px; padding: 8px 18px; font-size: 13px; font-weight: 600;
  color: var(--white); text-decoration: none; transition: background .2s;
}
.team-phone:hover { background: rgba(255,255,255,0.18); }


/* ── 11. CONTACT ── */
#iletisim-sec { padding: 5rem 4rem; display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.contact-items { display: flex; flex-direction: column; gap: 12px; }
.contact-item {
  display: flex; align-items: center; gap: 12px;
  background: var(--white); border: 1px solid var(--gray-light);
  border-radius: var(--radius); padding: 1rem 1.25rem;
  text-decoration: none; color: var(--black); transition: border-color .2s;
}
.contact-item:hover { border-color: rgba(0,0,0,0.3); }
.contact-icon  { font-size: 20px; flex-shrink: 0; }
.contact-label { font-size: 11px; color: var(--gray); }
.contact-val   { font-size: 14px; font-weight: 600; }
.map-contact   { border-radius: var(--radius); overflow: hidden; height: 340px; border: 1px solid var(--gray-light); }
.map-contact iframe { width: 100%; height: 100%; border: none; }


/* ── 12. FOOTER ── */
footer {
  background: var(--black); color: rgba(255,255,255,0.35);
  padding: 1.5rem 4rem; display: flex; justify-content: space-between;
  align-items: center; border-top: 1px solid rgba(255,255,255,0.08);
  flex-wrap: wrap; gap: 8px; font-size: 12px;
}
footer a { color: rgba(255,255,255,0.4); text-decoration: none; }
footer a:hover { color: rgba(255,255,255,0.7); }


/* ── 13. POPUP ── */
@keyframes popIn     { from{opacity:0;transform:translate(-50%,-46%)} to{opacity:1;transform:translate(-50%,-50%)} }
@keyframes fadeOverlay { from{opacity:0} to{opacity:1} }


/* ── 14. TEKNİK REHBER ── */

/* Ana kategori butonları */
.cat-btn {
  display:flex; align-items:center; justify-content:space-between;
  width:100%; background:var(--white); border:1px solid var(--gray-light);
  border-radius:var(--radius); padding:1.25rem 1.5rem;
  font-family:'Plus Jakarta Sans',sans-serif; font-size:15px; font-weight:600;
  color:var(--black); cursor:pointer; text-align:left;
  transition:border-color .2s, background .2s; margin-bottom:8px;
}
.cat-btn:hover { border-color:rgba(0,0,0,0.25); background:rgba(0,0,0,0.02); }
.cat-btn.open  { background:var(--black); color:var(--white); border-color:var(--black); }
.cat-btn .cat-arrow { transition:transform .3s; font-size:12px; opacity:0.6; }
.cat-btn.open .cat-arrow { transform:rotate(180deg); }
.cat-btn .cat-icon { font-size:20px; }
.cat-btn .cat-sub  { font-size:12px; font-weight:400; opacity:0.6; margin-top:2px; }

/* İçerik paneli */
.cat-panel { display:none; margin-bottom:8px; }
.cat-panel.open { display:block; animation:fadeIn .25s ease; }
.cat-inner {
  background:var(--white); border:1px solid var(--gray-light); border-top:none;
  border-radius:0 0 var(--radius) var(--radius); padding:1.5rem;
}

/* Tab butonları */
.tkbtn {
  background:var(--white); border:1px solid var(--gray-light); border-radius:99px;
  padding:7px 16px; font-size:12px; font-family:'Plus Jakarta Sans',sans-serif;
  cursor:pointer; transition:all .2s; color:var(--gray); font-weight:500; margin-bottom:1rem;
}
.tkbtn:hover, .tkbtn.active { background:var(--black); color:var(--white); border-color:var(--black); }
.tab-panel { display:none; }
.tab-panel.active { display:block; animation:fadeIn .3s ease; }

/* Lümen hesaplayıcı */
.lumen-grid   { display:grid; grid-template-columns:1fr 1fr; gap:2rem; align-items:start; }
.lumen-table  { border-radius:var(--radius); overflow:hidden; border:1px solid var(--gray-light); }
.lumen-table table { width:100%; border-collapse:collapse; font-size:13px; }
.lumen-table th { background:var(--black); color:var(--white); padding:10px 14px; text-align:left; font-weight:600; font-size:12px; letter-spacing:.05em; }
.lumen-table td { padding:10px 14px; border-bottom:1px solid var(--gray-light); color:var(--black); }
.lumen-table tr:last-child td { border-bottom:none; }
.lumen-table tr:nth-child(even) td { background:rgba(0,0,0,0.02); }
.lumen-calc { background:var(--black); color:var(--white); border-radius:var(--radius); padding:1.75rem; }
.lumen-calc label {
  font-size:12px; color:rgba(255,255,255,0.5); letter-spacing:.06em;
  text-transform:uppercase; display:block; margin-bottom:6px;
}
.lumen-calc input,
.lumen-calc select {
  width:100%; background:rgba(255,255,255,0.08); border:1px solid rgba(255,255,255,0.15);
  border-radius:8px; padding:10px 12px; color:var(--white); font-size:14px;
  font-family:'Plus Jakarta Sans',sans-serif; margin-bottom:1rem;
}
.lumen-calc select option { background:#1a1a1a; }
.lumen-result { background:rgba(184,150,62,0.2); border:1px solid rgba(184,150,62,0.4); border-radius:10px; padding:1rem 1.25rem; margin-top:0.5rem; }
.lumen-result-num   { font-size:2rem; font-weight:700; color:var(--gold); letter-spacing:-0.03em; }
.lumen-result-label { font-size:12px; color:rgba(255,255,255,0.5); margin-top:2px; }

/* Kelvin seçici */
.kelvin-track {
  position:relative; height:48px; border-radius:99px; margin:2rem 0 1rem; cursor:pointer;
  background:linear-gradient(to right,#ff9329 0%,#ffb347 10%,#ffd27f 20%,#fff1c1 30%,#fffaf0 40%,#f8f8ff 50%,#e8f0ff 60%,#cce0ff 70%,#aaccff 80%,#88aaff 90%,#6699ff 100%);
}
.kelvin-knob {
  position:absolute; top:50%; transform:translate(-50%,-50%);
  width:36px; height:36px; border-radius:50%; background:var(--white);
  border:3px solid var(--black); box-shadow:0 2px 12px rgba(0,0,0,0.25); cursor:grab;
}
.kelvin-labels  { display:flex; justify-content:space-between; font-size:11px; color:var(--gray); }
.kelvin-display { text-align:center; margin:1.5rem 0; }
.kelvin-value   { font-size:3rem; font-weight:700; letter-spacing:-0.04em; color:var(--black); }
.kelvin-name    { font-size:14px; color:var(--gray); margin-top:4px; }
.kelvin-swatch  { width:80px; height:80px; border-radius:50%; margin:1rem auto; border:3px solid var(--gray-light); transition:background .2s, box-shadow .2s; }
.kelvin-examples { display:grid; grid-template-columns:repeat(auto-fit,minmax(130px,1fr)); gap:10px; margin-top:1.5rem; }
.kelvin-ex { background:var(--white); border:1px solid var(--gray-light); border-radius:var(--radius); padding:1rem; text-align:center; cursor:pointer; transition:border-color .2s, transform .2s; }
.kelvin-ex:hover { border-color:var(--black); transform:translateY(-2px); }
.kelvin-ex-dot  { width:32px; height:32px; border-radius:50%; margin:0 auto 8px; }
.kelvin-ex-val  { font-size:13px; font-weight:600; color:var(--black); }
.kelvin-ex-room { font-size:11px; color:var(--gray); margin-top:2px; }

/* Armatür kartları */
.arma-grid  { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:14px; }
.arma-card  { background:var(--white); border:1px solid var(--gray-light); border-radius:var(--radius); overflow:hidden; }
.arma-head  { background:var(--black); padding:1rem 1.25rem; display:flex; align-items:center; gap:10px; }
.arma-icon  { font-size:22px; }
.arma-title { font-size:14px; font-weight:600; color:var(--white); }
.arma-body  { padding:1.25rem; }
.arma-body p { font-size:13px; color:var(--gray); line-height:1.7; margin-bottom:0.75rem; }
.arma-tip   { background:#fdf8f0; border-left:3px solid var(--gold); padding:8px 12px; border-radius:0 6px 6px 0; font-size:12px; color:#7a6030; line-height:1.6; }
.arma-tag   { display:inline-block; background:var(--gray-light); color:var(--gray); font-size:10px; padding:3px 10px; border-radius:99px; margin:4px 4px 0 0; }


/* ── MALZEME PLANLAMA ARACI ── */
.mlz-step { margin-bottom:1.25rem; padding:1.25rem; background:rgba(0,0,0,0.02); border:1px solid var(--gray-light); border-radius:var(--radius); }
.mlz-step-header { display:flex; align-items:flex-start; gap:12px; margin-bottom:1rem; }
.mlz-step-num { width:28px; height:28px; background:var(--black); color:var(--white); border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:13px; font-weight:700; flex-shrink:0; }
.mlz-step-title { font-size:15px; font-weight:600; color:var(--black); }
.mlz-step-desc { font-size:12px; color:var(--gray); margin-top:2px; }
.mlz-tip-select { display:flex; flex-wrap:wrap; gap:8px; }
.mlz-tip-btn { padding:10px 20px; border:1px solid var(--gray-light); border-radius:var(--radius); background:var(--white); font-size:14px; font-weight:600; cursor:pointer; font-family:inherit; transition:all .2s; }
.mlz-tip-btn:hover { border-color:var(--black); }
.mlz-tip-btn.active { background:var(--black); color:var(--white); border-color:var(--black); }
.mlz-tip-ozel { font-size:13px; }
.mlz-input-sm { width:80px; padding:8px 10px; border:1px solid var(--gray-light); border-radius:8px; font-size:14px; font-family:inherit; text-align:center; }
.mlz-input-sm:focus { outline:none; border-color:var(--gold); }
.mlz-lbl { font-size:12px; color:var(--gray); display:block; margin-bottom:4px; }
.mlz-ekle-btn { margin-top:10px; padding:10px 20px; background:var(--white); border:2px dashed var(--gray-light); border-radius:var(--radius); font-size:13px; font-weight:600; color:var(--gold); cursor:pointer; font-family:inherit; transition:all .2s; width:100%; }
.mlz-ekle-btn:hover { border-color:var(--gold); background:rgba(184,150,62,0.05); }
.mlz-daire-blok { background:var(--white); border:1px solid var(--gray-light); border-radius:var(--radius); padding:1rem; margin-bottom:10px; position:relative; }
.mlz-daire-head { display:flex; align-items:center; justify-content:space-between; margin-bottom:10px; }
.mlz-daire-head select { padding:6px 10px; border:1px solid var(--gray-light); border-radius:6px; font-size:13px; font-family:inherit; }
.mlz-daire-sil { width:28px; height:28px; border:none; background:rgba(239,68,68,0.1); color:#ef4444; border-radius:6px; cursor:pointer; font-size:14px; }

/* Oda kartları */
.mlz-oda-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:10px; }
.mlz-oda-card { background:var(--white); border:1px solid var(--gray-light); border-radius:var(--radius); padding:1rem; }
.mlz-oda-card-title { font-size:13px; font-weight:600; margin-bottom:10px; display:flex; align-items:center; gap:6px; }
.mlz-oda-row { display:flex; align-items:center; justify-content:space-between; margin-bottom:8px; }
.mlz-oda-label { font-size:12px; color:var(--gray); }
.mlz-pm { display:flex; align-items:center; gap:4px; }
.mlz-pm button { width:26px; height:26px; border:1px solid var(--gray-light); border-radius:6px; background:var(--white); font-size:14px; cursor:pointer; display:flex; align-items:center; justify-content:center; font-family:inherit; transition:background .15s; }
.mlz-pm button:hover { background:var(--gray-light); }
.mlz-pm span { width:28px; text-align:center; font-size:14px; font-weight:600; }

/* Hat butonları */
.mlz-hat-btns { display:flex; gap:6px; }
.mlz-hat-btn, .mlz-diyafon-btn, .mlz-kam-btn { padding:8px 16px; border:1px solid var(--gray-light); border-radius:var(--radius); background:var(--white); font-size:13px; font-weight:500; cursor:pointer; font-family:inherit; transition:all .2s; }
.mlz-hat-btn:hover, .mlz-diyafon-btn:hover, .mlz-kam-btn:hover { border-color:var(--black); }
.mlz-hat-btn.active, .mlz-diyafon-btn.active, .mlz-kam-btn.active, .mlz-asan-btn.active, .mlz-kolon-btn.active, .mlz-kat-btn.active, .mlz-toprak-btn.active { background:var(--black); color:var(--white); border-color:var(--black); }
.mlz-asan-btns, .mlz-kam-btns, .mlz-toprak-btns { display:flex; gap:6px; }

/* Cihaz grid */
.mlz-cihaz-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(200px,1fr)); gap:8px; }
.mlz-cihaz-item { display:flex; align-items:center; gap:8px; padding:10px 14px; border:1px solid var(--gray-light); border-radius:var(--radius); font-size:13px; cursor:pointer; transition:border-color .2s; }
.mlz-cihaz-item:hover { border-color:var(--black); }
.mlz-cihaz-item input[type="checkbox"] { accent-color:var(--gold); width:16px; height:16px; }
.mlz-cihaz-w { margin-left:auto; font-size:11px; color:var(--gold); font-weight:600; }

/* Diyafon butonları */
.mlz-diyafon-btns { display:flex; flex-wrap:wrap; gap:8px; }

/* Hesapla butonu */
.mlz-hesapla { width:100%; padding:16px; background:var(--black); color:var(--white); border:none; border-radius:var(--radius); font-size:16px; font-weight:700; font-family:inherit; cursor:pointer; display:flex; align-items:center; justify-content:center; gap:10px; transition:opacity .2s; }
.mlz-hesapla:hover { opacity:0.85; }

/* Sonuç tabloları */
.mlz-sonuc-grup { margin-bottom:1rem; }
.mlz-sonuc-baslik { font-size:13px; font-weight:700; color:var(--black); padding:8px 12px; background:var(--black); color:var(--white); border-radius:var(--radius) var(--radius) 0 0; }
.mlz-sonuc-tablo { width:100%; border-collapse:collapse; font-size:13px; border:1px solid var(--gray-light); border-top:none; }
.mlz-sonuc-tablo th { background:rgba(0,0,0,0.04); padding:8px 12px; text-align:left; font-weight:600; font-size:12px; border-bottom:1px solid var(--gray-light); }
.mlz-sonuc-tablo td { padding:8px 12px; border-bottom:1px solid var(--gray-light); }
.mlz-sonuc-tablo tr:last-child td { border-bottom:none; }
.mlz-uyari { margin-top:1.25rem; padding:1rem 1.25rem; background:rgba(184,150,62,0.08); border:1px solid rgba(184,150,62,0.25); border-radius:var(--radius); font-size:13px; color:#7a6030; line-height:1.7; }
.mlz-teklif-btn { display:flex; align-items:center; justify-content:center; gap:10px; width:100%; margin-top:12px; padding:14px; background:#25d366; color:#fff; border:none; border-radius:var(--radius); font-size:15px; font-weight:700; font-family:inherit; cursor:pointer; transition:background .2s; }
.mlz-teklif-btn:hover { background:#1da851; }
.mlz-ozet-kutu { display:grid; grid-template-columns:repeat(auto-fill,minmax(140px,1fr)); gap:8px; margin-bottom:1rem; }
.mlz-ozet-item { background:var(--black); color:var(--white); border-radius:var(--radius); padding:12px 14px; text-align:center; }
.mlz-ozet-item .mlz-ozet-val { font-size:1.3rem; font-weight:700; color:var(--gold); }
.mlz-ozet-item .mlz-ozet-lbl { font-size:11px; color:rgba(255,255,255,0.5); margin-top:2px; }

/* ── REFERANSLAR ── */
#referanslar { padding: 5rem 4rem; }
#referanslar > h2 { font-weight: 700; letter-spacing: -0.02em; font-size: clamp(1.8rem,3vw,2.8rem); margin-bottom: 0.5rem; }
#referanslar > p { color: var(--gray); margin-bottom: 2.5rem; font-size: 15px; }
.ref-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.ref-card {
  background: var(--white); border: 1px solid var(--gray-light); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, border-color .2s, box-shadow .2s;
}
.ref-card:hover { transform: translateY(-3px); border-color: rgba(0,0,0,0.2); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.ref-card-header {
  background: var(--black); padding: 1.25rem 1.5rem; display: flex; align-items: center; justify-content: space-between;
}
.ref-card-header .ref-title { font-size: 14px; font-weight: 600; color: var(--white); }
.ref-card-header .ref-tag {
  background: rgba(184,150,62,0.25); color: var(--gold); font-size: 10px; padding: 3px 10px;
  border-radius: 99px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase;
}
.ref-card-body { padding: 1.25rem 1.5rem; }
.ref-card-body .ref-loc { font-size: 12px; color: var(--gold); margin-bottom: 6px; display: flex; align-items: center; gap: 4px; }
.ref-card-body .ref-desc { font-size: 13px; color: var(--gray); line-height: 1.7; margin-bottom: 12px; }
.ref-card-body .ref-specs { display: flex; flex-wrap: wrap; gap: 6px; }
.ref-spec {
  background: var(--gray-light); font-size: 11px; padding: 4px 10px;
  border-radius: 99px; color: var(--gray); font-weight: 500;
}

/* ── TEKLİF FORMU ── */
#teklif { padding: 5rem 4rem; }
.teklif-wrapper {
  display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start;
}
.teklif-info { padding-right: 1rem; }
.teklif-form-box {
  background: var(--white); border: 1px solid var(--gray-light); border-radius: var(--radius);
  padding: 2rem;
}
.teklif-label {
  font-size: 12px; font-weight: 600; color: var(--black); display: block;
  margin-bottom: 6px; margin-top: 1rem;
}
.teklif-label:first-of-type { margin-top: 0; }
.teklif-input {
  width: 100%; padding: 10px 14px; border: 1px solid var(--gray-light); border-radius: 8px;
  font-size: 14px; font-family: 'Plus Jakarta Sans', sans-serif; color: var(--black);
  transition: border-color .2s; background: var(--white);
}
.teklif-input:focus { outline: none; border-color: var(--gold); }
.teklif-input::placeholder { color: #bbb; }
textarea.teklif-input { resize: vertical; min-height: 80px; }
select.teklif-input { cursor: pointer; }
.teklif-btn {
  width: 100%; margin-top: 1.5rem; padding: 14px; background: #25d366; color: #fff;
  border: none; border-radius: var(--radius); font-size: 15px; font-weight: 700;
  font-family: 'Plus Jakarta Sans', sans-serif; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  transition: background .2s;
}
.teklif-btn:hover { background: #1da851; }

/* ── 15. MOBILE ── */
@media (max-width: 768px) {
  nav { padding: 0.75rem 1rem; }
  .nav-links { display: none; }
  .hero { grid-template-columns: 1fr; padding: 5rem 1.5rem 3rem; gap: 2.5rem; }
  .hero h1 { font-size: 2.2rem; }
  #vizyon, #hizmetler, #rehber, #ekip { padding: 3rem 1.5rem; }
  #iletisim-sec { padding: 3rem 1.5rem; grid-template-columns: 1fr; }
  .section-divider { padding: 0 1.5rem; }
  .ig-section { padding: 0 1.5rem 1rem; }
  .ig-grid { grid-template-columns: repeat(2,1fr); }
  footer { padding: 1.25rem 1.5rem; flex-direction: column; text-align: center; gap: 6px; }
  .lumen-grid { grid-template-columns: 1fr; }
  #teknik { padding: 3rem 1.5rem; }
  .vizyon-pillars { grid-template-columns: repeat(2, 1fr); }
  .arma-grid { grid-template-columns: 1fr; }
  .cat-btn { padding: 1rem 1.25rem; font-size: 14px; }
  .cat-btn .cat-sub { font-size: 11px; }
  #yorumlar { padding: 3rem 1.5rem !important; }
  #hizmet-alani { padding: 3rem 1.5rem !important; }
  #ekip { padding: 3rem 1.5rem !important; }
  #tab-mcb > div { grid-template-columns: 1fr; }
  #referanslar { padding: 3rem 1.5rem; }
  .ref-grid { grid-template-columns: 1fr; }
  .mlz-oda-grid { grid-template-columns: 1fr; }
  .mlz-cihaz-grid { grid-template-columns: 1fr; }
  .mlz-tip-select { gap: 6px; }
  .mlz-tip-btn { padding: 8px 14px; font-size: 13px; }
  .mlz-ozet-kutu { grid-template-columns: repeat(2, 1fr); }
  #teklif { padding: 3rem 1.5rem; }
  .teklif-wrapper { grid-template-columns: 1fr; gap: 2rem; }
  .teklif-info { padding-right: 0; }
}

/* ── HİZMET ALANI + SERVİS ÜCRETİ ── */
#hizmet-alani { padding: 5rem 4rem; }
.sehir-etiketler { display:flex; flex-wrap:wrap; gap:8px; margin-bottom:1.5rem; }
.servis-ucret-baslik { display:flex; align-items:center; gap:12px; margin:2rem 0 0.75rem; }
.servis-ucret-baslik .icon { width:36px; height:36px; background:var(--black); border-radius:8px; display:flex; align-items:center; justify-content:center; font-size:18px; flex-shrink:0; }
.servis-hint { display:flex; align-items:center; gap:10px; background:rgba(184,150,62,0.08); border:1px solid rgba(184,150,62,0.2); border-radius:var(--radius); padding:12px 16px; margin-bottom:1rem; font-size:13px; color:#7a6220; }
#ucret-sonuc { display:none; margin-top:1rem; background:var(--white); border:1px solid var(--gray-light); border-radius:var(--radius); padding:1.5rem; }
.fiyat-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(115px,1fr)); gap:8px; margin-top:1rem; }
.fiyat-kutu { background:rgba(0,0,0,0.04); border-radius:8px; padding:10px 14px; }
.fiyat-kutu.gold { background:rgba(184,150,62,0.1); border:1px solid rgba(184,150,62,0.25); }
.fiyat-kutu .fiyat { font-weight:700; font-size:15px; }
.fiyat-kutu .mesafe { color:var(--gray); font-size:11px; }
.fiyat-kutu.gold .fiyat, .fiyat-kutu.gold .mesafe { color:#7a6220; }

@media (max-width: 768px) {
  #hizmet-alani { padding: 3rem 1.5rem; }
}