/* ==========================================================================
   Mehmet Torni ekosistemi — ortak tasarım dili (2026-10)
   mehmettorni.com (ana sayfa, hizmetler, blog) ve app.mehmettorni.com aynı
   renkleri, yazı tiplerini, menüyü ve alt bilgiyi kullanır.
   ========================================================================== */

@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-v/montserrat-latin.woff2") format("woff2");
  font-weight: 300 800; font-style: normal; font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-v/montserrat-latin-ext.woff2") format("woff2");
  font-weight: 300 800; font-style: normal; font-display: swap;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Dorsa";
  src: url("../fonts/dorsa/dorsa-regular-latin.woff2") format("woff2");
  font-weight: 400; font-style: normal; font-display: swap;
}

:root {
  --sari: #ffd531;
  --sari-koyu: #e6bf1f;
  --siyah: #0a0a0a;
  --zemin-2: #111111;
  --kart: #181818;
  --cizgi: #262626;
  --beyaz: #ffffff;
  --soluk: #a3a3a3;
  --acik-zemin: #f4f3ef;
  --metin-koyu: #1a1a1a;
  --metin-gri: #555555;
  --yaricap: 6px;
  --genislik: 1200px;
  --menu-y: 72px;
  --font: "Montserrat", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--menu-y) + 16px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body { margin: 0; background: var(--siyah); color: var(--beyaz); font-family: var(--font); font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3, h4 { font-family: var(--font); line-height: 1.15; margin: 0 0 .6em; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0 0 1em; }
button { font: inherit; }
:focus-visible { outline: 2px solid var(--sari); outline-offset: 3px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.atla { position: absolute; left: 16px; top: -60px; z-index: 200; background: var(--sari); color: #000; padding: 10px 16px; border-radius: var(--yaricap); font-weight: 600; text-decoration: none; }
.atla:focus { top: 12px; }

.kap { width: 100%; max-width: var(--genislik); margin: 0 auto; padding: 0 24px; }
.bolum { padding: 112px 0; }
.bolum-2 { background: var(--zemin-2); }
.bolum-acik { background: var(--acik-zemin); color: var(--metin-koyu); }
@media (max-width: 768px) { .bolum { padding: 80px 0; } .kap { padding: 0 20px; } body { font-size: 16px; } }

/* Bölüm başlığı: küçük üst etiket + büyük başlık + sarı çizgi (vitrinle aynı) */
.ust-etiket { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--sari); margin: 0 0 14px; }
.bolum-acik .ust-etiket { color: #735a00; }
.bolum-baslik { font-size: clamp(30px, 4vw, 46px); margin: 0 0 20px; }
.bolum-baslik::after { content: ""; display: block; width: 72px; height: 4px; background: var(--sari); margin-top: 20px; border-radius: 2px; }
.bolum-ust { max-width: 760px; margin-bottom: 56px; }
.bolum-ust .giris { color: var(--soluk); font-size: 18px; margin: 0; }
.bolum-acik .bolum-ust .giris { color: var(--metin-gri); }

/* Butonlar */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 28px; border-radius: var(--yaricap); font-size: 15px; font-weight: 600; text-decoration: none; border: 1px solid transparent; cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s; white-space: nowrap; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-sari { background: var(--sari); color: #000; }
.btn-sari:hover { background: var(--sari-koyu); }
.btn-cizgi { background: transparent; color: var(--beyaz); border-color: rgba(255, 255, 255, .3); }
.btn-cizgi:hover { border-color: var(--sari); color: var(--sari); }
.bolum-acik .btn-cizgi { color: var(--metin-koyu); border-color: rgba(0, 0, 0, .25); }
.bolum-acik .btn-cizgi:hover { border-color: #000; color: #000; }
.btn-kucuk { min-height: 42px; padding: 0 18px; font-size: 14px; }

/* ---------- Üst menü ---------- */
.ust { position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--menu-y); transition: background .3s, backdrop-filter .3s, border-color .3s; border-bottom: 1px solid transparent; }
.ust.dolu, .ust.hep-dolu { background: rgba(10, 10, 10, .88); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom-color: rgba(255, 255, 255, .06); }
.ust .kap { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--beyaz); flex: none; }
.logo svg { width: 46px; height: 23px; }
.logo-yazi { font-family: "Dorsa", var(--font); font-size: 34px; line-height: 1; letter-spacing: .04em; padding-top: 3px; }
.logo-alt { font-size: 11px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--sari); border-left: 1px solid rgba(255, 255, 255, .2); padding-left: 12px; }
.ana-menu { display: flex; align-items: center; gap: 30px; }
.ana-menu ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 28px; }
.ana-menu a:not(.btn) { color: #e5e5e5; text-decoration: none; font-size: 13px; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; transition: color .2s; }
.ana-menu a:not(.btn):hover, .ana-menu a[aria-current="page"] { color: var(--sari); }
.menu-dugme { display: none; width: 44px; height: 44px; border: 0; background: transparent; color: var(--beyaz); padding: 10px; cursor: pointer; }
.menu-dugme svg { width: 24px; height: 24px; }
.menu-dugme .kapat { display: none; }
@media (max-width: 1020px) {
  .menu-dugme { display: block; }
  .ana-menu { position: fixed; top: var(--menu-y); left: 0; right: 0; bottom: 0; background: rgba(10, 10, 10, .98); flex-direction: column; align-items: stretch; gap: 0; padding: 24px 20px 40px; overflow-y: auto; visibility: hidden; opacity: 0; transform: translateY(-8px); transition: opacity .25s, transform .25s, visibility .25s; }
  .ana-menu ul { flex-direction: column; align-items: stretch; gap: 0; }
  .ana-menu li a:not(.btn) { display: block; padding: 18px 4px; font-size: 16px; border-bottom: 1px solid var(--cizgi); }
  .ana-menu .btn { margin-top: 28px; }
  .menu-acik .ana-menu { visibility: visible; opacity: 1; transform: none; }
  .menu-acik .menu-dugme .ac { display: none; }
  .menu-acik .menu-dugme .kapat { display: block; }
  .menu-acik { overflow: hidden; }
  .menu-acik .ust { background: var(--siyah); }
}
@media (max-width: 480px) { .logo-alt { display: none; } }

/* ---------- Sayfa girişi (alt sayfalar) ---------- */
.sayfa-giris { padding: calc(var(--menu-y) + 72px) 0 80px; background: radial-gradient(1200px 500px at 85% -10%, rgba(255, 213, 49, .10), transparent 60%), var(--siyah); border-bottom: 1px solid var(--cizgi); }
.sayfa-giris h1 { font-size: clamp(34px, 5vw, 56px); max-width: 900px; margin-bottom: 20px; }
.sayfa-giris .giris { font-size: clamp(17px, 2vw, 20px); color: #cfcfcf; max-width: 760px; margin: 0; }
.sayfa-giris .meta { color: var(--soluk); font-size: 15px; margin: 0; }
.kirinti { list-style: none; margin: 0 0 28px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 10px; font-size: 13px; color: var(--soluk); }
.kirinti li + li::before { content: "/"; margin-right: 10px; opacity: .5; }
.kirinti a { color: #e5e5e5; text-decoration: underline; text-underline-offset: 3px; text-decoration-color: rgba(255, 255, 255, .35); }
.kirinti a:hover { color: var(--sari); }

/* ---------- Teklif şeridi ---------- */
.teklif { background: var(--sari); color: #000; padding: 88px 0; }
.teklif .kap { display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.teklif h2 { font-size: clamp(28px, 3.6vw, 42px); margin: 0 0 10px; }
.teklif p { margin: 0; font-size: 18px; max-width: 620px; color: #2a2a2a; }
.teklif .dugmeler { display: flex; flex-wrap: wrap; gap: 12px; }
.teklif .btn-siyah { background: #000; color: #fff; }
.teklif .btn-siyah:hover { background: #222; }
.teklif .btn-cizgi { color: #000; border-color: rgba(0, 0, 0, .35); }
.teklif .btn-cizgi:hover { border-color: #000; color: #000; }

/* ---------- Alt bilgi ---------- */
.alt { background: #050505; color: var(--soluk); padding: 80px 0 0; font-size: 15px; border-top: 1px solid var(--cizgi); }
.alt-izgara { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; }
.alt h2 { font-size: 13px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--beyaz); margin: 0 0 20px; }
.alt ul { list-style: none; margin: 0; padding: 0; }
.alt li { margin: 0 0 10px; }
.alt a { color: var(--soluk); text-decoration: none; transition: color .2s; }
.alt a:hover { color: var(--sari); }
.alt .logo { margin-bottom: 20px; color: var(--beyaz); }
.alt-tanim { max-width: 340px; margin: 0 0 24px; }
.sosyal { display: flex; gap: 10px; flex-wrap: wrap; }
.sosyal a { width: 40px; height: 40px; border-radius: 50%; background: var(--kart); display: inline-flex; align-items: center; justify-content: center; color: #ddd; }
.sosyal a:hover { background: var(--sari); color: #000; }
.sosyal svg { width: 18px; height: 18px; }
.alt-son { margin-top: 64px; border-top: 1px solid var(--cizgi); padding: 24px 0 32px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
@media (max-width: 900px) { .alt-izgara { grid-template-columns: 1fr 1fr; } .alt-izgara > :first-child { grid-column: 1 / -1; } }
@media (max-width: 520px) { .alt-izgara { grid-template-columns: 1fr; gap: 36px; } }

/* ---------- Hızlı iletişim (WhatsApp) ---------- */
.hizli { position: fixed; right: 20px; bottom: 20px; z-index: 90; width: 58px; height: 58px; border-radius: 50%; background: #25d366; color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 30px rgba(0, 0, 0, .35); transition: transform .2s; }
.hizli:hover { transform: scale(1.06); }
.hizli svg { width: 28px; height: 28px; }

/* ---------- Video kartı (YouTube, tıklayınca yüklenir) ---------- */
.is-izgara { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
@media (max-width: 1020px) { .is-izgara { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .is-izgara { grid-template-columns: minmax(0, 1fr); } }
.is { background: var(--kart); border-radius: var(--yaricap); overflow: hidden; display: flex; flex-direction: column; margin: 0; }
.bolum-acik .is { background: #fff; box-shadow: 0 1px 0 rgba(0, 0, 0, .06), 0 8px 30px rgba(0, 0, 0, .06); }
.oynat { position: relative; display: block; width: 100%; aspect-ratio: 16 / 9; padding: 0; border: 0; background: #000; cursor: pointer; overflow: hidden; }
.oynat img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease, opacity .3s; opacity: .92; }
.oynat:hover img { transform: scale(1.05); opacity: 1; }
.oynat .ikon { position: absolute; left: 50%; top: 50%; width: 64px; height: 64px; margin: -32px 0 0 -32px; border-radius: 50%; background: var(--sari); display: flex; align-items: center; justify-content: center; transition: transform .2s; box-shadow: 0 8px 24px rgba(0, 0, 0, .4); }
.oynat .ikon svg { width: 24px; height: 24px; margin-left: 3px; color: #000; }
.oynat:hover .ikon { transform: scale(1.08); }
.oynat iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.is figcaption { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.is .firma { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--sari); margin: 0 0 8px; }
.bolum-acik .is .firma { color: #735a00; }
.is h3 { font-size: 19px; margin: 0 0 8px; }
.is p { color: var(--soluk); font-size: 15px; margin: 0; }
.bolum-acik .is p { color: var(--metin-gri); }
.is .demo { margin-top: auto; padding-top: 14px; }
.is .demo a { color: var(--sari); font-weight: 600; font-size: 14px; text-decoration: none; }
.bolum-acik .is .demo a { color: #735a00; }
.is .demo a:hover { text-decoration: underline; }

/* Dil düğmesi (TR | EN) */
.ana-menu a.dil { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 30px; padding: 0 8px; border: 1px solid rgba(255, 255, 255, .3); border-radius: 999px; letter-spacing: .08em; }
.ana-menu a.dil:hover { border-color: var(--sari); }
@media (max-width: 1020px) { .ana-menu li a.dil { display: block; height: auto; min-width: 0; border: 0; border-bottom: 1px solid var(--cizgi); border-radius: 0; padding: 18px 4px; } }
.dil-mobil { display: none; }
@media (max-width: 1020px) {
  .ust .kap { gap: 12px; }
  .ust .logo { margin-right: auto; }
  .dil-mobil { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; height: 32px; padding: 0 10px; border: 1px solid rgba(255, 255, 255, .35); border-radius: 999px; color: var(--beyaz); text-decoration: none; font-size: 13px; font-weight: 600; letter-spacing: .08em; }
  .ana-menu li:has(> a.dil) { display: none; }
}

/* Başka siteye giden menü bağlantısı (3D Web App ↗): ayırıcı çizgi, soluk renk, ok */
.ana-menu li.dis { padding-left: 28px; border-left: 1px solid rgba(255, 255, 255, .15); }
.ana-menu a.dis-link { display: inline-flex; align-items: center; gap: 6px; color: var(--soluk); }
.dis-ok { width: 14px; height: 14px; flex: none; }
@media (max-width: 1020px) {
  .ana-menu li.dis { padding-left: 0; border-left: 0; }
  .ana-menu li a.dis-link { display: flex; }
}