/* ==========================================================================
   Tanıtım sitesi. Editoryal, fotoğraf odaklı, nötr zemin + tek sönük vurgu.
   Gradyan, gölge, cam efekti yok. Yalnızca bu dosyadaki değişkenler kullanılır.
   ========================================================================== */

:root {
    --paper: #fafaf8;
    --paper-alt: #f0eeea;
    --block: #e4e1db;
    --ink: #1b1d1f;
    --muted: #5b5f63;
    --line: #d8d5ce;
    --accent: #86461f;
    --accent-hover: #6b3616;
    --on-dark: #f3f1ec;
    --danger: #963232;

    --font-head: 'Archivo', 'Segoe UI', Arial, sans-serif;
    --font-body: 'Source Sans 3', 'Segoe UI', Arial, sans-serif;

    --wrap: 1240px;
    --gutter: clamp(20px, 4vw, 48px);
    --section: clamp(56px, 9vw, 120px);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.65 var(--font-body); }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 700; line-height: 1.12; letter-spacing: -0.01em; margin: 0 0 .5em; }
p { margin: 0 0 1em; }

.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--on-dark); padding: 8px 14px; z-index: 100; }
.skip:focus { left: 8px; }
.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: var(--section) 0; }
.section--alt { background: var(--paper-alt); }
.section--dark { background: var(--ink); color: var(--on-dark); }
.section--dark a { color: var(--on-dark); }
.section__head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: clamp(28px, 4vw, 48px); border-top: 2px solid var(--ink); padding-top: 16px; }
.section--dark .section__head { border-color: var(--on-dark); }
.section__head h2 { margin: 0; font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
.eyebrow { font: 600 .8125rem/1 var(--font-head); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); margin: 0 0 18px; }
.lead { font-size: clamp(1.15rem, 1.6vw, 1.35rem); color: var(--muted); max-width: 40em; }
.link-arrow { font: 600 .9375rem var(--font-head); text-decoration: none; border-bottom: 2px solid currentColor; padding-bottom: 2px; white-space: nowrap; }
.link-arrow:hover { color: var(--accent); }

/* Butonlar */
.btn { display: inline-block; font: 600 .9375rem/1 var(--font-head); letter-spacing: .02em; padding: 15px 26px; border: 2px solid var(--ink); background: var(--ink); color: var(--on-dark); text-decoration: none; cursor: pointer; border-radius: 0; }
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); border-color: var(--ink); color: var(--on-dark); }
.section--dark .btn { background: var(--on-dark); border-color: var(--on-dark); color: var(--ink); }
.section--dark .btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Üst bilgi */
.site-header { border-bottom: 1px solid var(--line); background: var(--paper); position: sticky; top: 0; z-index: 50; }
.site-header__in { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 10px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font: 800 1.25rem/1.1 var(--font-head); letter-spacing: -0.01em; text-transform: uppercase; }
.brand:hover { color: var(--ink); }
.brand img { max-height: 46px; width: auto; }
.brand small { display: block; font: 500 .6875rem/1.2 var(--font-head); letter-spacing: .16em; color: var(--muted); margin-top: 3px; }
.nav { display: flex; flex-wrap: wrap; gap: 4px 28px; }
.nav a { font: 600 .9375rem/1 var(--font-head); text-decoration: none; padding: 10px 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--ink); border-bottom-color: var(--block); }
.nav a[aria-current="page"] { border-bottom-color: var(--accent); }

/* Ana sayfa girişi */
.hero { padding: clamp(40px, 7vw, 96px) 0 var(--section); }
.hero__grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(28px, 5vw, 80px); align-items: end; }
.hero h1 { font-size: clamp(2.3rem, 5.6vw, 4.6rem); font-weight: 800; margin-bottom: .4em; text-wrap: balance; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.hero__media { aspect-ratio: 4 / 5; }

/* Görsel ve yer tutucu */
.pic { position: relative; background: var(--block); overflow: hidden; width: 100%; }
.pic img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.ph svg { position: absolute; inset: 0; width: 100%; height: 100%; color: #b3afa6; }
.ratio-43 { aspect-ratio: 4 / 3; }
.ratio-169 { aspect-ratio: 16 / 9; }
.ratio-32 { aspect-ratio: 3 / 2; }

/* Rakamlar */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stats > div { padding: 32px 24px 28px 0; }
.stats > div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.stats dt { font: 800 clamp(2.2rem, 3.8vw, 3.2rem)/1 var(--font-head); letter-spacing: -0.02em; }
.stats dd { margin: 10px 0 0; color: var(--muted); font-size: .9375rem; }

/* Hakkımızda özeti */
.split { display: grid; grid-template-columns: 1fr 2fr; gap: clamp(24px, 5vw, 80px); }
.split h2 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
.statement { font: 600 clamp(1.4rem, 2.6vw, 2.15rem)/1.3 var(--font-head); letter-spacing: -0.01em; margin-bottom: 24px; text-wrap: pretty; }

/* Proje kartları */
.projects { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(28px, 3.5vw, 48px) clamp(20px, 2.5vw, 32px); }
.projects--feature .card:first-child { grid-column: span 2; grid-row: span 2; }
.card { display: block; text-decoration: none; color: inherit; }
.card:hover { color: inherit; }
.card:hover h3 { color: var(--accent); }
.card__media { aspect-ratio: 4 / 3; margin-bottom: 16px; }
.projects--feature .card:first-child .card__media { aspect-ratio: 16 / 9; }
.card h3 { font-size: 1.3rem; margin-bottom: 6px; transition: color .15s; }
.card__meta { color: var(--muted); font-size: .9375rem; margin: 0; }
.tag { display: inline-block; font: 600 .75rem/1 var(--font-head); letter-spacing: .08em; text-transform: uppercase; border: 1px solid var(--ink); padding: 5px 8px; margin-right: 8px; }
.tag--live { border-color: var(--accent); color: var(--accent); }

/* Hizmetler: numaralı satırlar */
.rows { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.rows li { border-bottom: 1px solid var(--line); }
.rows a { display: grid; grid-template-columns: 64px 1fr 1.4fr; gap: 24px; padding: 26px 0; text-decoration: none; align-items: baseline; }
.rows a:hover { color: inherit; background: var(--paper-alt); }
.rows a:hover h3 { color: var(--accent); }
.rows .num { font: 700 .9375rem var(--font-head); color: var(--muted); }
.rows h3 { margin: 0; font-size: 1.35rem; transition: color .15s; }
.rows p { margin: 0; color: var(--muted); }

/* Alt sayfa başlığı */
.page-head { padding: clamp(40px, 7vw, 88px) 0 clamp(28px, 4vw, 48px); border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(2.1rem, 4.6vw, 3.6rem); font-weight: 800; margin-bottom: .3em; }
.page-head .lead { margin: 0; }
.crumbs { font-size: .875rem; color: var(--muted); margin-bottom: 20px; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; }

/* Uzun metin */
.prose { max-width: 44rem; }
.prose h2 { font-size: 1.6rem; margin-top: 1.6em; }
.prose h3 { font-size: 1.25rem; margin-top: 1.4em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1em; }
.prose li { margin-bottom: .3em; }
.prose a { color: var(--accent); }
.prose img { height: auto; margin: 1.5em 0; }
.prose blockquote { margin: 1.5em 0; padding-left: 20px; border-left: 3px solid var(--accent); color: var(--muted); }
.prose table { border-collapse: collapse; width: 100%; margin-bottom: 1em; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; }

/* Filtre */
.filter { display: flex; gap: 8px 28px; flex-wrap: wrap; margin-bottom: 40px; }
.filter a { font: 600 .9375rem var(--font-head); text-decoration: none; padding: 8px 0; border-bottom: 2px solid transparent; color: var(--muted); }
.filter a:hover { color: var(--ink); }
.filter a[aria-current="true"] { color: var(--ink); border-bottom-color: var(--accent); }
.filter span { color: var(--muted); font-weight: 400; }

/* Proje detayı */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 20px 32px; margin: 0; padding: 24px 0; border-bottom: 1px solid var(--line); }
.facts dt { font: 600 .75rem/1 var(--font-head); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.facts dd { margin: 0; font-weight: 600; }
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 40px; }
.gallery figure { margin: 0; }
.gallery figure:first-child { grid-column: 1 / -1; }
.gallery a { display: block; background: var(--block); }
.gallery img { width: 100%; height: auto; }
.gallery figcaption { font-size: .875rem; color: var(--muted); padding-top: 8px; }
.detail { display: grid; grid-template-columns: 2fr 1fr; gap: clamp(28px, 5vw, 80px); padding-top: 40px; }

/* Belgeler */
.certs { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 32px 24px; }
.certs figure { margin: 0; }
.certs .pic { aspect-ratio: 3 / 4; border: 1px solid var(--line); background: #fff; }
.certs .pic img { object-fit: contain; }
.certs h3 { font-size: 1.05rem; margin: 14px 0 4px; }
.certs p { margin: 0; color: var(--muted); font-size: .9375rem; }

/* İletişim */
.contact { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(28px, 6vw, 96px); padding: clamp(36px, 5vw, 64px) 0 var(--section); }
.info dt { font: 600 .75rem/1 var(--font-head); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px; }
.info dd { margin: 0 0 24px; white-space: pre-line; }
.map { border: 0; width: 100%; aspect-ratio: 4 / 3; background: var(--block); margin-top: 8px; }
.form { display: grid; gap: 20px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form label { display: block; font: 600 .875rem var(--font-head); margin-bottom: 6px; }
.form input[type=text], .form input[type=email], .form input[type=tel], .form textarea { width: 100%; font: inherit; color: var(--ink); background: #fff; border: 1px solid var(--muted); border-radius: 0; padding: 12px 14px; }
.form textarea { min-height: 170px; resize: vertical; }
.form .is-invalid { border-color: var(--danger); }
.form .error { color: var(--danger); font-size: .875rem; margin-top: 6px; }
.form .check { display: flex; gap: 10px; align-items: flex-start; font: 400 .9375rem/1.5 var(--font-body); }
.form .check input { margin-top: 5px; width: 18px; height: 18px; flex: none; accent-color: var(--accent); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.notice { border: 1px solid var(--ink); border-left-width: 6px; padding: 16px 20px; margin-bottom: 24px; background: #fff; }

/* Alt bilgi */
.site-footer { background: var(--ink); color: var(--on-dark); padding: 64px 0 28px; font-size: .9375rem; }
.site-footer a { color: var(--on-dark); text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid #45484b; }
.site-footer h2 { font: 600 .75rem/1 var(--font-head); letter-spacing: .14em; text-transform: uppercase; color: #a9a59c; margin-bottom: 16px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.site-footer__brand { font: 800 1.25rem var(--font-head); text-transform: uppercase; margin-bottom: 12px; }
.site-footer p { color: #c9c6be; max-width: 30em; white-space: pre-line; }
.site-footer__bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 24px; color: #a9a59c; font-size: .875rem; }
.site-footer__bottom a { color: #a9a59c; }

@media (max-width: 900px) {
    .hero__grid, .split, .detail, .contact { grid-template-columns: 1fr; }
    .hero__media { aspect-ratio: 16 / 10; order: -1; }
    .projects { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .projects--feature .card:first-child { grid-column: 1 / -1; grid-row: auto; }
    .rows a { grid-template-columns: 44px 1fr; }
    .rows p { grid-column: 2; }
    .site-footer__grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
    .projects, .form__row, .gallery { grid-template-columns: 1fr; }
    .stats > div + div { border-left: 0; padding-left: 0; }
    .stats > div { border-bottom: 1px solid var(--line); }
    .nav { gap: 2px 20px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
@media print { .site-header, .site-footer, .hero__actions { display: none; } }