/* =====================================================================
   DENİZ SONDAJ — denizsondaj.com tasarım sistemi (Zemin Teknik)
   Açık tema. Okyanus mavisi + deniz yeşili; şamandıra turuncusu yalnızca
   birincil eylemlerde. Motif: sondaj gemisinin numaralı ayak bantları
   ("derinlik cetveli") ve batimetrik eş derinlik eğrileri.
   ===================================================================== */
:root {
  --deep: #05263a;      /* başlıklar, koyu şerit */
  --ocean: #0b3d5c;
  --ocean-700: #114f75;
  --sea: #0e8a86;       /* birincil */
  --sea-600: #0b6f6c;
  --sea-100: #d8f1ef;
  --sea-50:  #eef8f7;
  --aqua: #2fc4b8;
  --buoy: #ff6a1f;      /* vurgu / CTA */
  --buoy-600: #e05812;
  --ink: #0f1f2e;
  --mute: #5b6b7a;
  --mute-2: #8494a3;
  --line: #dde5eb;
  --sand: #f4f7f9;
  --foam: #ffffff;
  --font-display: 'Manrope', 'Inter', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Roboto, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
  --r-sm: 8px; --r: 14px; --r-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(5,38,58,.06), 0 2px 8px rgba(5,38,58,.06);
  --shadow: 0 10px 30px -12px rgba(5,38,58,.25), 0 2px 8px rgba(5,38,58,.06);
  --shadow-lg: 0 30px 60px -24px rgba(5,38,58,.4);
  --ease: cubic-bezier(.2,.7,.2,1);
  --container: 1280px;
  --gutter: clamp(1.1rem, 3vw, 2.5rem);
  --ruler: repeating-linear-gradient(180deg, #111 0 18px, var(--buoy) 18px 24px);
  --contours: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1000' height='600' viewBox='0 0 1000 600' fill='none' stroke='%230e8a86' stroke-opacity='0.10' stroke-width='1.2'><ellipse cx='520' cy='320' rx='110' ry='60' transform='rotate(-12 520 320)'/><ellipse cx='520' cy='320' rx='210' ry='120' transform='rotate(-14 520 320)'/><ellipse cx='520' cy='320' rx='320' ry='190' transform='rotate(-17 520 320)'/><ellipse cx='520' cy='320' rx='440' ry='265' transform='rotate(-20 520 320)'/><ellipse cx='520' cy='320' rx='580' ry='350' transform='rotate(-23 520 320)'/><ellipse cx='520' cy='320' rx='740' ry='450' transform='rotate(-26 520 320)'/></svg>");
  --contours-light: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1000' height='600' viewBox='0 0 1000 600' fill='none' stroke='%23ffffff' stroke-opacity='0.09' stroke-width='1.2'><ellipse cx='520' cy='320' rx='110' ry='60' transform='rotate(-12 520 320)'/><ellipse cx='520' cy='320' rx='210' ry='120' transform='rotate(-14 520 320)'/><ellipse cx='520' cy='320' rx='320' ry='190' transform='rotate(-17 520 320)'/><ellipse cx='520' cy='320' rx='440' ry='265' transform='rotate(-20 520 320)'/><ellipse cx='520' cy='320' rx='580' ry='350' transform='rotate(-23 520 320)'/><ellipse cx='520' cy='320' rx='740' ry='450' transform='rotate(-26 520 320)'/></svg>");
}

/* ---------- Temel ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 15px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font-body); color: var(--ink); background: var(--foam); line-height: 1.6; overflow-x: hidden; }
img, video { max-width: 100%; display: block; }
a { color: var(--sea-600); text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--deep); letter-spacing: -.02em; line-height: 1.1; margin: 0 0 .6em; font-weight: 800; }
h1 { font-size: clamp(2.1rem, 1.4rem + 2.6vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 1.2rem + 1.7vw, 2.6rem); }
h3 { font-size: 1.25rem; font-weight: 700; }
p { margin: 0 0 1rem; }
.ds-container { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.ds-section { padding: clamp(3.5rem, 7vw, 6.5rem) 0; }
.ds-section--sand { background: var(--sand); }
.ds-section--deep { background: var(--deep); color: rgba(255,255,255,.82); position: relative; overflow: hidden; }
.ds-section--deep::before { content: ""; position: absolute; inset: 0; background: var(--contours-light) center/130% auto no-repeat; pointer-events: none; }
.ds-section--deep h2, .ds-section--deep h3 { color: #fff; }
.ds-section--deep .ds-card h3 { color: var(--deep); }
.ds-section--contours { position: relative; }
.ds-section--contours::before { content: ""; position: absolute; inset: 0; background: var(--contours) center/140% auto no-repeat; pointer-events: none; }
.ds-section > .ds-container { position: relative; }
.ds-kicker { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--font-mono); font-size: .7rem; font-weight: 500; letter-spacing: .16em; text-transform: uppercase; color: var(--sea-600); }
.ds-kicker::before { content: ""; width: 26px; height: 3px; background: var(--buoy); border-radius: 2px; }
.ds-section--deep .ds-kicker { color: var(--aqua); }
.ds-head { max-width: 46rem; margin-bottom: clamp(2rem, 4vw, 3.2rem); }
.ds-head p { color: var(--mute); font-size: 1.05rem; }
.ds-section--deep .ds-head p { color: rgba(255,255,255,.72); }
.ds-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.ds-head--center .ds-kicker { justify-content: center; }

/* ---------- Düğmeler ---------- */
.ds-btn { display: inline-flex; align-items: center; gap: .55rem; padding: .78rem 1.35rem; border-radius: 999px; font-family: var(--font-display); font-weight: 700; font-size: .92rem; line-height: 1; border: 1.5px solid transparent; cursor: pointer; transition: transform .2s var(--ease), background .2s, color .2s, box-shadow .2s; white-space: nowrap; }
.ds-btn:hover { transform: translateY(-1px); }
.ds-btn--lg { padding: .95rem 1.7rem; font-size: 1rem; }
.ds-btn--buoy { background: var(--buoy); color: #fff; box-shadow: 0 8px 20px -8px rgba(255,106,31,.7); }
.ds-btn--buoy:hover { background: var(--buoy-600); color: #fff; }
.ds-btn--sea { background: var(--sea); color: #fff; }
.ds-btn--sea:hover { background: var(--sea-600); color: #fff; }
.ds-btn--outline { border-color: var(--line); color: var(--deep); background: #fff; }
.ds-btn--outline:hover { border-color: var(--sea); color: var(--sea-600); }
.ds-btn--glass { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.4); color: #fff; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.ds-btn--glass:hover { background: rgba(255,255,255,.26); color: #fff; }
.ds-btn--link { padding: 0; border: 0; color: var(--sea-600); background: none; gap: .4rem; }
.ds-btn--link i { transition: transform .2s; }
.ds-btn--link:hover i { transform: translateX(3px); }

/* ---------- Üst bar + header ---------- */
.ds-header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; transition: background .25s, box-shadow .25s, border-color .25s; border-bottom: 1px solid rgba(255,255,255,.14); }
.ds-header__in { max-width: var(--container); margin: 0 auto; padding: .7rem var(--gutter); display: flex; align-items: center; gap: 1.5rem; }
.ds-brand { display: flex; align-items: center; gap: .7rem; color: #fff; }
.ds-brand__logo { width: 48px; height: 44px; border-radius: 10px; background: #fff; padding: 4px; object-fit: contain; }
.ds-brand__txt { display: flex; flex-direction: column; line-height: 1.05; }
.ds-brand__txt b { font-family: var(--font-display); font-weight: 800; font-size: 1.05rem; letter-spacing: -.01em; }
.ds-brand__txt small { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .16em; text-transform: uppercase; opacity: .8; margin-top: .15rem; }
.ds-nav { display: none; margin-left: auto; gap: .2rem; }
.ds-nav a { padding: .55rem .8rem; border-radius: 999px; color: rgba(255,255,255,.9); font-weight: 600; font-size: .92rem; transition: background .2s, color .2s; }
.ds-nav a:hover, .ds-nav a.is-active { background: rgba(255,255,255,.14); color: #fff; }
.ds-header__cta { display: flex; align-items: center; gap: .6rem; margin-left: auto; }
.ds-header__ext { display: none; color: rgba(255,255,255,.75); font-family: var(--font-mono); font-size: .7rem; letter-spacing: .06em; }
.ds-header__ext:hover { color: #fff; }
.ds-header .ds-btn--buoy { display: none; }
.ds-burger { width: 44px; height: 44px; border-radius: 12px; border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.1); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px; cursor: pointer; }
.ds-burger span { width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: transform .2s, opacity .2s; }
.ds-header.is-solid, .ds-header.is-scrolled { background: rgba(255,255,255,.96); backdrop-filter: blur(14px) saturate(160%); -webkit-backdrop-filter: blur(14px) saturate(160%); border-bottom-color: var(--line); box-shadow: 0 10px 30px -20px rgba(5,38,58,.35); }
.ds-header.is-solid .ds-brand, .ds-header.is-scrolled .ds-brand { color: var(--deep); }
.ds-header.is-solid .ds-brand__logo, .ds-header.is-scrolled .ds-brand__logo { background: var(--sand); }
.ds-header.is-solid .ds-nav a, .ds-header.is-scrolled .ds-nav a { color: var(--ink); }
.ds-header.is-solid .ds-nav a:hover, .ds-header.is-scrolled .ds-nav a:hover, .ds-header.is-solid .ds-nav a.is-active, .ds-header.is-scrolled .ds-nav a.is-active { background: var(--sea-50); color: var(--sea-600); }
.ds-header.is-solid .ds-header__ext, .ds-header.is-scrolled .ds-header__ext { color: var(--mute); }
.ds-header.is-solid .ds-burger, .ds-header.is-scrolled .ds-burger { border-color: var(--line); background: #fff; }
.ds-header.is-solid .ds-burger span, .ds-header.is-scrolled .ds-burger span { background: var(--deep); }
@media (min-width: 1024px) {
  .ds-nav { display: flex; }
  .ds-header__cta { margin-left: 0; }
  .ds-header__ext { display: inline-flex; align-items: center; gap: .35rem; margin-right: .4rem; }
  .ds-header .ds-btn--buoy { display: inline-flex; }
  .ds-burger { display: none; }
}
/* çekmece (mobil) */
.ds-drawer { position: fixed; inset: 0; z-index: 200; display: none; }
.ds-drawer.is-open { display: block; }
.ds-drawer__bg { position: absolute; inset: 0; background: rgba(5,38,58,.55); backdrop-filter: blur(4px); }
.ds-drawer__panel { position: absolute; top: 0; right: 0; bottom: 0; width: min(88vw, 380px); background: #fff; padding: 1.2rem 1.4rem 2rem; overflow-y: auto; display: flex; flex-direction: column; gap: .3rem; animation: ds-slide .28s var(--ease); }
@keyframes ds-slide { from { transform: translateX(100%); } to { transform: none; } }
.ds-drawer__top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.ds-drawer__close { width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--line); background: #fff; font-size: 1.1rem; cursor: pointer; color: var(--deep); }
.ds-drawer a.ds-drawer__link { display: block; padding: .85rem .9rem; border-radius: var(--r-sm); font-family: var(--font-display); font-weight: 700; color: var(--deep); font-size: 1.05rem; }
.ds-drawer a.ds-drawer__link:hover, .ds-drawer a.ds-drawer__link.is-active { background: var(--sea-50); color: var(--sea-600); }
.ds-drawer__cta { margin-top: auto; display: grid; gap: .6rem; padding-top: 1.2rem; border-top: 1px solid var(--line); }
.ds-drawer__cta .ds-btn { justify-content: center; }
.ds-drawer__meta { font-size: .85rem; color: var(--mute); display: grid; gap: .3rem; margin-top: 1rem; }

/* ---------- Hero ---------- */
.ds-hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; background: var(--deep); }
.ds-hero video, .ds-hero__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; z-index: 0; }
.ds-hero__shade { position: absolute; inset: 0; z-index: 1; background: linear-gradient(90deg, rgba(5,38,58,.82) 0%, rgba(11,61,92,.58) 48%, rgba(14,138,134,.28) 100%), linear-gradient(0deg, rgba(5,38,58,.7) 0%, rgba(5,38,58,0) 45%); }
.ds-hero__in { position: relative; z-index: 2; max-width: var(--container); width: 100%; margin: 0 auto; padding: 8rem var(--gutter) clamp(4.5rem, 12vh, 7rem); display: grid; gap: 2.5rem; align-items: end; }
.ds-hero__copy { max-width: 40rem; }
.ds-hero__copy .ds-kicker { color: #fff; }
.ds-hero__copy .ds-kicker::before { background: var(--aqua); }
.ds-hero__copy h1 { color: #fff; margin: 1rem 0 1rem; font-size: clamp(2rem, 1.1rem + 2.6vw, 3.4rem); text-shadow: 0 6px 30px rgba(0,0,0,.35); }
.ds-hero__copy h1 em { font-style: normal; color: var(--aqua); }
.ds-hero__copy p { color: rgba(255,255,255,.86); font-size: 1rem; max-width: 32rem; margin-bottom: 1.6rem; line-height: 1.7; }
.ds-hero__actions { display: flex; flex-wrap: wrap; gap: .7rem; }
.ds-depth { display: none; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.22); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-radius: var(--r-lg); padding: 1.3rem 1.4rem 1.3rem 1.2rem; color: #fff; grid-template-columns: 14px 1fr; gap: 1.1rem; max-width: 24rem; justify-self: end; }
.ds-depth__ruler { width: 12px; border-radius: 4px; background: var(--ruler); box-shadow: 0 0 0 2px rgba(255,255,255,.18); }
.ds-depth ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .9rem; }
.ds-depth li { display: grid; gap: .1rem; }
.ds-depth b { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 500; color: var(--aqua); letter-spacing: -.02em; }
.ds-depth span { font-size: .84rem; color: rgba(255,255,255,.82); }
.ds-depth__cap { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,.6); grid-column: 1 / -1; margin-top: .2rem; }
.ds-hero__scroll { position: absolute; left: 50%; bottom: 1.4rem; transform: translateX(-50%); z-index: 2; width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid rgba(255,255,255,.3); color: #fff; animation: ds-bob 2.2s ease-in-out infinite; }
@keyframes ds-bob { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,6px); } }
@media (min-width: 900px) { .ds-hero__in { grid-template-columns: 1.4fr 1fr; } .ds-depth { display: grid; } }

/* ---------- İstatistik şeridi ---------- */
.ds-stats { background: #fff; border-bottom: 1px solid var(--line); border-top: 4px solid var(--sea); }
.ds-stats__in { max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); display: grid; grid-template-columns: repeat(2, 1fr); }
.ds-stat { padding: 1.4rem 1.2rem 1.4rem 0; border-right: 1px solid var(--line); }
.ds-stat + .ds-stat { padding-left: 1.2rem; }
.ds-stat:last-child { border-right: 0; }
.ds-stat__num { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.7rem, 1.2rem + 1.5vw, 2.5rem); color: var(--deep); line-height: 1; letter-spacing: -.03em; }
.ds-stat__num span { color: var(--buoy); }
.ds-stat__lbl { margin-top: .4rem; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mute-2); }
@media (min-width: 768px) { .ds-stats__in { grid-template-columns: repeat(4, 1fr); } }
@media (max-width: 767px) { .ds-stat:nth-child(2) { border-right: 0; } .ds-stat:nth-child(n+3) { border-top: 1px solid var(--line); } .ds-stat:nth-child(3) { padding-left: 0; } }

/* ---------- Derinlik kartları ---------- */
.ds-zones { display: grid; gap: 1.2rem; }
@media (min-width: 900px) { .ds-zones { grid-template-columns: repeat(3, 1fr); } }
.ds-zone { position: relative; border-radius: var(--r-lg); overflow: hidden; background: var(--deep); min-height: 30rem; display: flex; flex-direction: column; justify-content: flex-end; color: #fff; box-shadow: var(--shadow); }
.ds-zone img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.ds-zone:hover img { transform: scale(1.05); }
.ds-zone::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(5,38,58,.92) 0%, rgba(5,38,58,.45) 45%, rgba(5,38,58,.05) 75%); }
.ds-zone__body { position: relative; z-index: 1; padding: 1.6rem 1.5rem; }
.ds-zone__depth { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em; color: var(--aqua); border: 1px solid rgba(47,196,184,.5); border-radius: 999px; padding: .3rem .7rem; margin-bottom: .8rem; }
.ds-zone h3 { color: #fff; font-size: 1.4rem; margin-bottom: .4rem; }
.ds-zone p { color: rgba(255,255,255,.8); font-size: .92rem; margin-bottom: .9rem; }
.ds-zone__tag { font-size: .8rem; color: rgba(255,255,255,.65); }
.ds-zone .ds-btn--link { color: var(--aqua); }

/* ---------- Gemi özelliği ---------- */
.ds-feature { display: grid; gap: 2.5rem; align-items: center; }
@media (min-width: 992px) { .ds-feature { grid-template-columns: 1.1fr 1fr; } }
.ds-feature__media { position: relative; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.ds-feature__media img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.ds-feature__badge { position: absolute; left: 1.2rem; bottom: 1.2rem; background: rgba(255,255,255,.92); color: var(--deep); border-radius: var(--r-sm); padding: .6rem .9rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; box-shadow: var(--shadow-sm); }
.ds-specs { list-style: none; margin: 1.5rem 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem 1.5rem; }
.ds-specs li { border-left: 3px solid var(--buoy); padding-left: .9rem; }
.ds-specs b { display: block; font-family: var(--font-display); font-size: 1.3rem; color: #fff; letter-spacing: -.02em; }
.ds-specs span { font-size: .84rem; color: rgba(255,255,255,.7); }
.ds-section:not(.ds-section--deep) .ds-specs b { color: var(--deep); }
.ds-section:not(.ds-section--deep) .ds-specs span { color: var(--mute); }

/* ---------- Hizmet kartları ---------- */
.ds-grid { display: grid; gap: 1.2rem; }
.ds-grid--2 { grid-template-columns: 1fr; }
.ds-grid--3 { grid-template-columns: 1fr; }
@media (min-width: 700px) { .ds-grid--2, .ds-grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .ds-grid--3 { grid-template-columns: repeat(3, 1fr); } }
.ds-card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 1.7rem 1.6rem; transition: transform .25s var(--ease), box-shadow .25s, border-color .25s; position: relative; }
.ds-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.ds-card__icon { width: 52px; height: 52px; border-radius: 14px; background: var(--sea-50); color: var(--sea-600); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; margin-bottom: 1.1rem; transition: background .25s, color .25s; }
.ds-card:hover .ds-card__icon { background: var(--sea); color: #fff; }
.ds-card__num { position: absolute; top: 1.4rem; right: 1.4rem; font-family: var(--font-mono); font-size: .7rem; color: var(--mute-2); letter-spacing: .1em; }
.ds-card h3 { font-size: 1.12rem; margin-bottom: .5rem; }
.ds-card p { color: var(--mute); font-size: .93rem; margin-bottom: .8rem; }
.ds-card ul { margin: 0 0 .8rem; padding-left: 1.1rem; color: var(--mute); font-size: .9rem; }
.ds-card li { margin-bottom: .25rem; }
.ds-card li::marker { color: var(--buoy); }

/* ---------- Süreç ---------- */
.ds-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; counter-reset: step; }
@media (min-width: 900px) { .ds-steps { grid-template-columns: repeat(5, 1fr); } }
.ds-step { background: #fff; border-radius: var(--r); padding: 1.4rem 1.3rem 1.4rem; border: 1px solid var(--line); position: relative; }
.ds-step::before { counter-increment: step; content: "0" counter(step); font-family: var(--font-mono); font-size: .72rem; letter-spacing: .12em; color: var(--buoy); display: block; margin-bottom: .7rem; }
.ds-step h3 { font-size: 1.02rem; margin-bottom: .35rem; }
.ds-step p { font-size: .86rem; color: var(--mute); margin: 0; }
.ds-step__bar { height: 6px; border-radius: 3px; background: var(--ruler); background-size: 24px 24px; margin-bottom: 1rem; opacity: .85; }

/* ---------- Projeler ---------- */
.ds-projects { display: grid; gap: 1.2rem; }
@media (min-width: 700px) { .ds-projects { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .ds-projects { grid-template-columns: repeat(3, 1fr); } }
.ds-project { border-radius: var(--r-lg); overflow: hidden; background: #fff; border: 1px solid var(--line); display: flex; flex-direction: column; transition: transform .25s var(--ease), box-shadow .25s; }
.ds-project:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.ds-project__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--sand); }
.ds-project__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.ds-project:hover .ds-project__media img { transform: scale(1.05); }
.ds-project__stat { position: absolute; left: 1rem; bottom: 1rem; background: var(--deep); color: #fff; border-radius: var(--r-sm); padding: .45rem .7rem; font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; }
.ds-project__stat b { color: var(--aqua); font-weight: 500; }
.ds-project__body { padding: 1.3rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: .4rem; flex: 1; }
.ds-project__meta { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--mute-2); }
.ds-project h3 { font-size: 1.08rem; margin: 0; }
.ds-project p { color: var(--mute); font-size: .9rem; margin: 0; }

/* ---------- Referanslar ---------- */
.ds-refs { padding: 2.6rem 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.ds-refs__head { text-align: center; margin-bottom: 1.4rem; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase; color: var(--mute-2); }
.marquee-track { overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee-inner { display: flex; gap: 3.5rem; width: max-content; align-items: center; will-change: transform; }
.marquee-inner img { height: 40px; width: auto; max-width: 150px; object-fit: contain; filter: grayscale(1); opacity: .65; transition: filter .2s, opacity .2s; }
.marquee-inner img:hover { filter: none; opacity: 1; }
.ds-logos { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (min-width: 600px) { .ds-logos { grid-template-columns: repeat(4, 1fr); } }
.ds-logos div { background: #fff; border: 1px solid var(--line); border-radius: var(--r); height: 84px; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.ds-logos img { max-height: 44px; max-width: 120px; width: auto; object-fit: contain; filter: grayscale(1); opacity: .7; }
.ds-logos div:hover img { filter: none; opacity: 1; }

/* ---------- CTA ---------- */
.ds-cta { background: var(--ocean); color: #fff; position: relative; overflow: hidden; }
.ds-cta::before { content: ""; position: absolute; inset: 0; background: var(--contours-light) center/130% auto no-repeat; }
.ds-cta::after { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 10px; background: var(--ruler); background-size: 10px 24px; }
.ds-cta__in { position: relative; max-width: var(--container); margin: 0 auto; padding: clamp(3rem, 6vw, 4.5rem) var(--gutter); display: grid; gap: 1.6rem; align-items: center; }
@media (min-width: 900px) { .ds-cta__in { grid-template-columns: 1.4fr 1fr; } }
.ds-cta h2 { color: #fff; margin-bottom: .5rem; }
.ds-cta p { color: rgba(255,255,255,.78); margin: 0; max-width: 34rem; }
.ds-cta__actions { display: flex; flex-wrap: wrap; gap: .8rem; justify-content: flex-start; }
@media (min-width: 900px) { .ds-cta__actions { justify-content: flex-end; } }
.ds-cta__phone { display: inline-flex; align-items: center; gap: .6rem; color: #fff; font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; }
.ds-cta__phone i { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,.12); display: flex; align-items: center; justify-content: center; color: var(--aqua); }

/* ---------- Footer ---------- */
.ds-footer { background: var(--deep); color: rgba(255,255,255,.72); padding: 3.5rem 0 0; }
.ds-footer__grid { display: grid; gap: 2rem; }
@media (min-width: 900px) { .ds-footer__grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
.ds-footer h4 { color: #fff; font-size: .78rem; font-family: var(--font-mono); font-weight: 500; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 1rem; }
.ds-footer h4::before { content: ""; display: inline-block; width: 18px; height: 2px; background: var(--buoy); margin-right: .6rem; vertical-align: middle; }
.ds-footer a { color: rgba(255,255,255,.72); }
.ds-footer a:hover { color: #fff; }
.ds-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; font-size: .92rem; }
.ds-footer__brand { display: flex; align-items: center; gap: .8rem; color: #fff; margin-bottom: 1rem; }
.ds-footer__brand img { width: 52px; height: 48px; border-radius: 10px; background: #fff; padding: 4px; object-fit: contain; }
.ds-footer__brand b { font-family: var(--font-display); font-size: 1.15rem; display: block; }
.ds-footer__brand small { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .16em; text-transform: uppercase; opacity: .75; }
.ds-footer__about { font-size: .9rem; line-height: 1.7; max-width: 26rem; }
.ds-footer__social { display: flex; gap: .5rem; margin-top: 1.2rem; }
.ds-footer__social a { width: 38px; height: 38px; border-radius: 10px; border: 1px solid rgba(255,255,255,.18); display: flex; align-items: center; justify-content: center; color: #fff; }
.ds-footer__social a:hover { background: var(--sea); border-color: var(--sea); }
.ds-footer__contact li { display: flex; gap: .7rem; align-items: flex-start; }
.ds-footer__contact i { color: var(--aqua); margin-top: .25rem; width: 16px; text-align: center; }
.ds-footer__bottom { margin-top: 3rem; border-top: 1px solid rgba(255,255,255,.1); padding: 1.2rem 0; font-family: var(--font-mono); font-size: .68rem; letter-spacing: .06em; display: flex; flex-wrap: wrap; gap: .6rem 1.5rem; justify-content: space-between; color: rgba(255,255,255,.5); }
.ds-footer__bottom a { color: rgba(255,255,255,.6); }

/* ---------- Alt sayfa başlığı ---------- */
.ds-page-hero { position: relative; min-height: 52vh; display: flex; align-items: flex-end; overflow: hidden; background: var(--deep); color: #fff; }
.ds-page-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ds-page-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,38,58,.86) 0%, rgba(11,61,92,.55) 55%, rgba(14,138,134,.25) 100%), linear-gradient(0deg, rgba(5,38,58,.75) 0%, rgba(5,38,58,0) 55%); }
.ds-page-hero__in { position: relative; z-index: 1; max-width: var(--container); width: 100%; margin: 0 auto; padding: 8rem var(--gutter) 3rem; }
.ds-crumbs { font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,.65); margin-bottom: 1rem; display: flex; flex-wrap: wrap; gap: .5rem; }
.ds-crumbs a { color: rgba(255,255,255,.8); }
.ds-crumbs span::before { content: "›"; margin-right: .5rem; color: var(--aqua); }
.ds-page-hero h1 { color: #fff; margin-bottom: .6rem; }
.ds-page-hero p { color: rgba(255,255,255,.82); max-width: 38rem; font-size: 1.05rem; margin: 0; }

/* ---------- İçerik blokları ---------- */
.ds-split { display: grid; gap: 2rem; align-items: center; }
@media (min-width: 900px) { .ds-split { grid-template-columns: 1fr 1fr; gap: 3.5rem; } .ds-split--rev > :first-child { order: 2; } }
.ds-split h2 { font-size: clamp(1.5rem, 1.1rem + 1.3vw, 2.1rem); }
.ds-split p { color: var(--mute); }
.ds-split ul { padding-left: 1.1rem; color: var(--mute); }
.ds-split li::marker { color: var(--buoy); }
.ds-figure { margin: 0; border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--shadow); position: relative; }
.ds-figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.ds-figure--tall img { aspect-ratio: 4 / 5; }
.ds-figure figcaption { position: absolute; left: 1rem; bottom: 1rem; background: rgba(5,38,58,.85); color: #fff; padding: .4rem .7rem; border-radius: var(--r-sm); font-family: var(--font-mono); font-size: .68rem; letter-spacing: .08em; }
.ds-figure--credit figcaption { position: static; background: none; color: var(--mute-2); padding: .5rem 0 0; }
.ds-badge { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--sea-600); background: var(--sea-50); border-radius: 999px; padding: .35rem .75rem; margin-bottom: .9rem; }
.ds-gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: .9rem; }
@media (min-width: 800px) { .ds-gallery { grid-template-columns: repeat(4, 1fr); } .ds-gallery--3 { grid-template-columns: repeat(3, 1fr); } }
.ds-gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: var(--r); box-shadow: var(--shadow-sm); transition: transform .3s var(--ease); }
.ds-gallery img:hover { transform: scale(1.02); }
.ds-gallery--3 img { aspect-ratio: 4 / 3; }
.ds-table { width: 100%; border-collapse: collapse; font-size: .93rem; background: #fff; border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow-sm); }
.ds-table th, .ds-table td { padding: .8rem 1rem; text-align: left; border-bottom: 1px solid var(--line); }
.ds-table th { width: 38%; font-family: var(--font-mono); font-weight: 500; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--mute); background: var(--sand); }
.ds-table tr:last-child td, .ds-table tr:last-child th { border-bottom: 0; }
.ds-list-check { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; }
.ds-list-check li { display: flex; gap: .7rem; align-items: flex-start; color: var(--ink); }
.ds-list-check i { color: var(--sea); margin-top: .3rem; }
.ds-anchor-nav { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1.4rem; }
.ds-anchor-nav a { border: 1px solid rgba(255,255,255,.35); color: #fff; border-radius: 999px; padding: .4rem .85rem; font-size: .82rem; font-weight: 600; }
.ds-anchor-nav a:hover { background: rgba(255,255,255,.16); }
.ds-note { border-left: 4px solid var(--buoy); background: var(--sand); border-radius: 0 var(--r) var(--r) 0; padding: 1.1rem 1.3rem; color: var(--ink); font-size: .95rem; }
.ds-quote { font-family: var(--font-display); font-size: clamp(1.2rem, 1rem + .9vw, 1.6rem); font-weight: 700; color: var(--deep); line-height: 1.35; border-left: 4px solid var(--sea); padding-left: 1.2rem; margin: 1.5rem 0; }

/* ---------- İletişim ---------- */
.ds-contact { display: grid; gap: 1.5rem; }
@media (min-width: 992px) { .ds-contact { grid-template-columns: 1.5fr 1fr; align-items: start; } }
.ds-form { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: clamp(1.4rem, 3vw, 2.2rem); box-shadow: var(--shadow-sm); }
.ds-form__row { display: grid; gap: 1rem; }
@media (min-width: 600px) { .ds-form__row { grid-template-columns: 1fr 1fr; } }
.ds-field { display: grid; gap: .35rem; margin-bottom: 1rem; }
.ds-field label { font-size: .82rem; font-weight: 600; color: var(--deep); }
.ds-field input, .ds-field select, .ds-field textarea { width: 100%; font: inherit; font-size: .95rem; padding: .75rem .9rem; border: 1px solid var(--line); border-radius: var(--r-sm); background: #fff; color: var(--ink); transition: border-color .2s, box-shadow .2s; }
.ds-field input:focus, .ds-field select:focus, .ds-field textarea:focus { outline: 0; border-color: var(--sea); box-shadow: 0 0 0 3px rgba(14,138,134,.15); }
.ds-field textarea { min-height: 140px; resize: vertical; }
.ds-form__foot { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; margin-top: .4rem; }
.ds-check { display: flex; gap: .5rem; align-items: flex-start; font-size: .84rem; color: var(--mute); }
.ds-check input { margin-top: .25rem; accent-color: var(--sea); }
.ds-form__result { display: none; margin-top: 1rem; padding: .85rem 1rem; border-radius: var(--r-sm); font-size: .92rem; font-weight: 500; }
.ds-form__result.is-success { display: block; background: var(--sea-100); color: #0b5b58; }
.ds-form__result.is-error { display: block; background: #fdecec; color: #9f1d1d; }
.ds-info { display: grid; gap: 1rem; }
.ds-info__card { background: #fff; border: 1px solid var(--line); border-radius: var(--r-lg); padding: 1.4rem 1.5rem; }
.ds-info__card h3 { font-size: .78rem; font-family: var(--font-mono); font-weight: 500; letter-spacing: .14em; text-transform: uppercase; color: var(--mute); margin-bottom: 1rem; }
.ds-info__card ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }
.ds-info__card li { display: flex; gap: .8rem; align-items: flex-start; }
.ds-info__card li i { width: 36px; height: 36px; border-radius: 10px; background: var(--sea-50); color: var(--sea-600); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.ds-info__card b { display: block; color: var(--deep); font-size: .95rem; }
.ds-info__card span { font-size: .84rem; color: var(--mute); }
.ds-map { border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line); box-shadow: var(--shadow-sm); }
.ds-map iframe { width: 100%; height: 320px; border: 0; display: block; }

/* ---------- Bildirim ---------- */
.ds-toast { position: fixed; top: 5.2rem; right: 1rem; z-index: 300; max-width: min(28rem, calc(100vw - 2rem)); display: flex; gap: .7rem; align-items: flex-start; padding: .9rem 1rem; border-radius: var(--r); color: #fff; box-shadow: var(--shadow-lg); font-size: .92rem; font-weight: 500; transition: transform .3s var(--ease), opacity .3s; }
.ds-toast.is-hidden { transform: translateX(calc(100% + 1.5rem)); opacity: 0; }
.ds-toast--success { background: var(--sea); }
.ds-toast--error { background: #c62828; }
.ds-toast button { margin-left: auto; background: none; border: 0; color: #fff; opacity: .8; cursor: pointer; }

/* ---------- WhatsApp ---------- */
.ds-wa { position: fixed; right: 1.2rem; bottom: 1.2rem; z-index: 150; width: 54px; height: 54px; border-radius: 50%; background: #25d366; color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; box-shadow: 0 10px 24px -8px rgba(37,211,102,.8); transition: transform .2s; }
.ds-wa:hover { transform: scale(1.06); color: #fff; }

/* ---------- Ortaya çıkma ---------- */
html.ds-js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
html.ds-js [data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html.ds-js [data-reveal] { opacity: 1; transform: none; transition: none; } .ds-hero__scroll { animation: none; } }

/* ---------- 404 ---------- */
.ds-404 { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 6rem var(--gutter) 3rem; background: var(--sand); }
.ds-404 b { font-family: var(--font-mono); font-size: 5rem; color: var(--sea); display: block; line-height: 1; }

/* ---------- SSS ---------- */
.ds-faq-list { display: grid; gap: .7rem; max-width: 56rem; }
.ds-faq { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 0 1.3rem; }
.ds-faq summary { cursor: pointer; list-style: none; padding: 1.05rem 0; font-family: var(--font-display); font-weight: 700; color: var(--deep); display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.ds-faq summary::-webkit-details-marker { display: none; }
.ds-faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--sea); font-size: 1.2rem; flex-shrink: 0; transition: transform .2s; }
.ds-faq[open] summary::after { transform: rotate(45deg); }
.ds-faq p { color: var(--mute); margin: 0 0 1.1rem; font-size: .95rem; }