/* =====================================================================
   ATİS Fuarcılık — Tasarım Sistemi (style.css)
   Marka: turkuaz #26b1b7 · bronz #b38364 · koyu #231f20 · beyaz zemin
   Tema: üçgen geometri, akıcı animasyon
   ===================================================================== */

/* ---------- Değişkenler ---------- */
:root {
    --turkuaz: #26b1b7;
    --turkuaz-koyu: #1c8c91;
    --turkuaz-acik: #5fcace;
    --bronz: #b38364;
    --bronz-koyu: #946a4e;
    --koyu: #231f20;
    --gri: #6b6b6e;
    --gri-acik: #f4f6f7;
    --cizgi: #e7eaec;
    --beyaz: #ffffff;

    --font-baslik: 'Jost', 'Futura PT', 'Century Gothic', 'Segoe UI', sans-serif;
    --font-govde: 'Jost', 'Futura PT', 'Century Gothic', 'Segoe UI', sans-serif;

    --kap: 1200px;
    --radius: 14px;
    --golge: 0 10px 30px rgba(35, 31, 32, .08);
    --golge-hover: 0 18px 44px rgba(38, 177, 183, .18);
    --gecis: .35s cubic-bezier(.22, .61, .36, 1);
    --header-h: 76px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-govde);
    color: var(--koyu);
    background: var(--beyaz);
    line-height: 1.6;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

h1, h2, h3, h4 { font-family: var(--font-baslik); font-weight: 700; line-height: 1.15; letter-spacing: -.01em; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
p { color: var(--gri); }

/* ---------- Yardımcılar ---------- */
.kap { width: 100%; max-width: var(--kap); margin: 0 auto; padding: 0 24px; }
.bolum { padding: clamp(60px, 9vw, 120px) 0; position: relative; }
.bolum--gri { background: var(--gri-acik); }
.text-merkez { text-align: center; }
.vurgu { color: var(--turkuaz); }
.vurgu-bronz { color: var(--bronz); }

.bolum-baslik { margin-bottom: 48px; }
.bolum-baslik .etiket {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: .8rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
    color: var(--turkuaz); margin-bottom: 14px;
}
.bolum-baslik .etiket::before {
    content: ''; width: 0; height: 0;
    border-left: 6px solid transparent; border-right: 6px solid transparent;
    border-bottom: 10px solid var(--bronz);
}
.bolum-baslik p { max-width: 620px; margin-top: 10px; }
.bolum-baslik.text-merkez p { margin-left: auto; margin-right: auto; }

/* ---------- Butonlar ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 28px; border-radius: 50px;
    font-weight: 600; font-size: .95rem;
    transition: var(--gecis); position: relative; overflow: hidden;
}
.btn-primary { background: var(--turkuaz); color: #fff; box-shadow: 0 8px 20px rgba(38,177,183,.3); }
.btn-primary:hover { background: var(--turkuaz-koyu); transform: translateY(-2px); box-shadow: var(--golge-hover); }
.btn-secondary { background: var(--bronz); color: #fff; }
.btn-secondary:hover { background: var(--bronz-koyu); transform: translateY(-2px); }
.btn-outline { border: 2px solid var(--turkuaz); color: var(--turkuaz); }
.btn-outline:hover { background: var(--turkuaz); color: #fff; }
.btn-light { background: #fff; color: var(--koyu); box-shadow: var(--golge); }
.btn-light:hover { transform: translateY(-2px); box-shadow: var(--golge-hover); }

/* ---------- Üçgen dekorlar ---------- */
.ucgen {
    position: absolute; width: 0; height: 0; opacity: .12; z-index: 0; pointer-events: none;
}
.ucgen--turkuaz { border-left: 40px solid transparent; border-right: 40px solid transparent; border-bottom: 70px solid var(--turkuaz); }
.ucgen--bronz { border-left: 30px solid transparent; border-right: 30px solid transparent; border-bottom: 52px solid var(--bronz); }

/* Üçgen kesimli bölüm geçişi */
.kesim-ust { clip-path: polygon(0 4vw, 50% 0, 100% 4vw, 100% 100%, 0 100%); }

/* =====================================================================
   HEADER
   ===================================================================== */
.header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--header-h);
    display: flex; align-items: center;
    transition: var(--gecis);
}
.header.scrolled { background: #fff; box-shadow: 0 4px 24px rgba(35,31,32,.07); }
.header .kap { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo-img { height: 46px; width: auto; display: block; }
.logo-beyaz { filter: brightness(0) invert(1); }   /* koyu zeminde beyaz logo */
@media (max-width: 760px) { .logo-img { height: 38px; } }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
    padding: 10px 16px; font-weight: 500; font-size: .95rem; border-radius: 8px;
    color: var(--koyu); transition: var(--gecis); position: relative;
}
.nav a:hover, .nav a.active { color: var(--turkuaz); }
.nav a.active::after {
    content: ''; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 0;
    border-left: 5px solid transparent; border-right: 5px solid transparent; border-bottom: 7px solid var(--turkuaz);
    width: 10px; margin: 0 auto;
}

.header-sag { display: flex; align-items: center; gap: 14px; }

/* Dil değiştirici */
.dil { display: flex; gap: 2px; background: rgba(38,177,183,.1); border-radius: 50px; padding: 4px; }
.dil a {
    width: 34px; height: 30px; display: grid; place-items: center;
    font-size: .78rem; font-weight: 700; text-transform: uppercase; border-radius: 50px;
    color: var(--gri); transition: var(--gecis);
}
.dil a.active { background: var(--turkuaz); color: #fff; }

/* Hamburger */
.menu-btn { display: none; width: 44px; height: 44px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.menu-btn span { width: 24px; height: 2px; background: var(--koyu); transition: var(--gecis); }
.menu-btn.acik span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-btn.acik span:nth-child(2) { opacity: 0; }
.menu-btn.acik span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =====================================================================
   HERO
   ===================================================================== */
.hero {
    position: relative; min-height: 100vh; display: flex; align-items: center;
    background: linear-gradient(135deg, #fff 0%, #f0fbfb 55%, #eef6f7 100%);
    overflow: hidden; padding-top: var(--header-h);
}
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero .kap { position: relative; z-index: 2; }
.hero-icerik { max-width: 760px; }
.hero .etiket {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: .82rem; font-weight: 600; letter-spacing: .16em; text-transform: uppercase;
    color: var(--bronz); margin-bottom: 22px;
}
.hero h1 { margin-bottom: 22px; }
.hero h1 .vurgu { position: relative; }
.hero p { font-size: 1.15rem; max-width: 560px; margin-bottom: 36px; color: #4a4a4e; }
.hero-butonlar { display: flex; flex-wrap: wrap; gap: 16px; }

/* Hero alt dalga/üçgen geçiş */
.hero-alt { position: absolute; bottom: -1px; left: 0; right: 0; z-index: 1; line-height: 0; }

/* =====================================================================
   FUAR KARTLARI
   ===================================================================== */
.izgara { display: grid; gap: 28px; }
.izgara--3 { grid-template-columns: repeat(3, 1fr); }
.izgara--2 { grid-template-columns: repeat(2, 1fr); }
.izgara--4 { grid-template-columns: repeat(4, 1fr); }

.fuar-kart {
    background: #fff; border-radius: var(--radius); overflow: hidden;
    box-shadow: var(--golge); transition: var(--gecis);
    display: flex; flex-direction: column; position: relative; border: 1px solid var(--cizgi);
}
.fuar-kart:hover { transform: translateY(-8px); box-shadow: var(--golge-hover); border-color: transparent; }
.fuar-kart__logo {
    height: 180px; display: grid; place-items: center; padding: 28px;
    background: linear-gradient(135deg, #fafdfd, #eef7f8); position: relative;
}
.fuar-kart__logo::after {
    content: ''; position: absolute; right: 0; bottom: 0;
    border-left: 30px solid transparent; border-bottom: 30px solid var(--turkuaz); opacity: .25;
}
.fuar-kart__logo img { max-height: 110px; width: auto; object-fit: contain; }
.fuar-kart__govde { padding: 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.fuar-kart__govde h3 { font-size: 1.25rem; }
.fuar-kart__alt { font-size: .85rem; color: var(--bronz); font-weight: 600; }
.fuar-kart__tarih { display: flex; align-items: center; gap: 8px; color: var(--gri); font-size: .9rem; }
.fuar-kart .btn { margin-top: auto; align-self: flex-start; }

.rozet {
    position: absolute; top: 16px; left: 16px; z-index: 3;
    background: var(--turkuaz); color: #fff; font-size: .72rem; font-weight: 700;
    padding: 6px 12px; border-radius: 50px; letter-spacing: .04em;
}
.rozet--past { background: var(--gri); }

/* Geri sayım */
.geri-sayim { display: flex; gap: 8px; margin: 6px 0; }
.geri-sayim div {
    background: var(--gri-acik); border-radius: 10px; padding: 8px 6px; min-width: 52px; text-align: center;
}
.geri-sayim b { display: block; font-family: var(--font-baslik); font-size: 1.3rem; color: var(--turkuaz); line-height: 1; }
.geri-sayim span { font-size: .65rem; text-transform: uppercase; letter-spacing: .05em; color: var(--gri); }
.geri-sayim--bitti { color: var(--bronz); font-weight: 600; }

/* Bilet satışı */
.btn-bilet { background: linear-gradient(135deg, var(--bronz), var(--bronz-koyu)); color: #fff; }
.btn-bilet:hover { transform: translateY(-2px); box-shadow: 0 12px 26px rgba(179,131,100,.3); }
.bilet-durum { display: inline-flex; align-items: center; gap: 6px; padding: 12px 22px; border-radius: 50px; font-weight: 600; font-size: .9rem; }
.bilet-durum::before { content: ''; width: 8px; height: 8px; border-radius: 50%; }
.bilet-soon { background: rgba(38,177,183,.12); color: var(--turkuaz-koyu); }
.bilet-soon::before { background: var(--turkuaz); }
.bilet-closed { background: #f0f1f2; color: var(--gri); }
.bilet-closed::before { background: #b9bcbe; }

/* =====================================================================
   LOGO ŞERİDİ (marquee)
   ===================================================================== */
.serit { overflow: hidden; padding: 20px 0; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.serit__iz { display: flex; gap: 56px; width: max-content; animation: kaydir 32s linear infinite; }
.serit:hover .serit__iz { animation-play-state: paused; }
.serit img { height: 60px; width: auto; object-fit: contain; filter: grayscale(1); opacity: .65; transition: var(--gecis); }
.serit img:hover { filter: none; opacity: 1; }
@keyframes kaydir { to { transform: translateX(-50%); } }

/* =====================================================================
   PROJELER
   ===================================================================== */
.proje-kart {
    position: relative; border-radius: var(--radius); overflow: hidden;
    background: #fff; box-shadow: var(--golge); transition: var(--gecis); border: 1px solid var(--cizgi);
}
.proje-kart:hover { transform: translateY(-6px); box-shadow: var(--golge-hover); }
.proje-kart__gorsel { height: 200px; display: grid; place-items: center; padding: 26px; background: linear-gradient(135deg,#fafdfd,#f1ece7); }
.proje-kart__gorsel img { max-height: 130px; width: auto; object-fit: contain; }
.proje-kart__govde { padding: 20px 24px; }
.proje-kart__govde h3 { font-size: 1.15rem; }

/* Logosu olmayan projeler: kutuyu dolduran fotoğraf.
   display:grid + auto satır, yüzdelik yüksekliği çözemediği için fotoğraf
   kutudan taşıp başlığın üstüne biniyordu; blok düzen + overflow ile sabitlendi. */
.proje-kart__gorsel--foto { padding: 0; display: block; overflow: hidden; }
.proje-kart__gorsel--foto img {
    max-height: none; width: 100%; height: 100%; object-fit: cover; display: block;
}

/* =====================================================================
   KARDEŞ FİRMA VURGU KUTUSU (Hizmetler → Taflan Tur)
   ===================================================================== */
.kardes-kutu {
    margin-top: 56px; padding: 34px 36px; border-radius: var(--radius);
    background: linear-gradient(135deg, #f6fbfb, #f5efe9);
    border: 1px solid var(--cizgi); box-shadow: var(--golge);
    display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between;
}
.kardes-kutu > div { flex: 1 1 320px; }
.kardes-kutu h3 { font-size: 1.45rem; margin: 6px 0 10px; }
.kardes-kutu p { color: var(--gri); line-height: 1.8; margin: 0; max-width: 52rem; }
.kardes-kutu .btn { flex: none; }

/* =====================================================================
   SOSYAL MEDYA İKONLARI (fuar / proje) — adresi girilmemiş ağ basılmaz
   ===================================================================== */
.sosyal-ikonlar { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.sosyal-ikon {
    width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
    color: var(--koyu); background: #fff; border: 1px solid var(--cizgi);
    transition: var(--gecis); flex: none;
}
.sosyal-ikon:hover { color: #fff; background: var(--turkuaz); border-color: var(--turkuaz); transform: translateY(-3px); }
.sosyal-ikon:focus-visible { outline: 2px solid var(--turkuaz); outline-offset: 2px; }

/* =====================================================================
   HİZMETLER
   ===================================================================== */
.hizmet-kart {
    background: #fff; border-radius: var(--radius); padding: 34px 28px;
    box-shadow: var(--golge); transition: var(--gecis); border: 1px solid var(--cizgi); position: relative; overflow: hidden;
}
.hizmet-kart::before {
    content: ''; position: absolute; top: -20px; right: -20px;
    border-left: 50px solid transparent; border-right: 50px solid transparent; border-bottom: 86px solid rgba(38,177,183,.08);
    transition: var(--gecis);
}
.hizmet-kart:hover { transform: translateY(-6px); box-shadow: var(--golge-hover); }
.hizmet-kart:hover::before { border-bottom-color: rgba(179,131,100,.14); }
.hizmet-kart .ikon {
    width: 64px; height: 64px; border-radius: 18px; display: grid; place-items: center;
    background: linear-gradient(135deg, var(--turkuaz), var(--turkuaz-acik)); color: #fff; margin-bottom: 20px;
}
.hizmet-kart .ikon svg { width: 30px; height: 30px; }
.hizmet-kart h3 { margin-bottom: 10px; }

/* =====================================================================
   FORM
   ===================================================================== */
.form-grid { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
.alan { display: flex; flex-direction: column; gap: 7px; }
.alan--tam { grid-column: 1 / -1; }
.alan label { font-size: .85rem; font-weight: 600; color: var(--koyu); }
.alan input, .alan textarea, .alan select {
    padding: 13px 16px; border: 1px solid var(--cizgi); border-radius: 10px;
    font-family: inherit; font-size: .95rem; background: #fff; transition: var(--gecis);
}
.alan textarea { min-height: 130px; resize: vertical; }
.alan input:focus, .alan textarea:focus, .alan select:focus { outline: none; border-color: var(--turkuaz); box-shadow: 0 0 0 3px rgba(38,177,183,.15); }

.uyari { padding: 14px 18px; border-radius: 10px; font-size: .92rem; margin-bottom: 18px; }
.uyari--ok { background: rgba(38,177,183,.12); color: var(--turkuaz-koyu); }
.uyari--hata { background: rgba(179,131,100,.14); color: var(--bronz-koyu); }

/* =====================================================================
   FOOTER
   ===================================================================== */
.footer { background: var(--koyu); color: #cfd0d2; padding: 70px 0 0; position: relative; }
.footer::before {
    content: ''; position: absolute; top: 0; left: 50%; transform: translate(-50%,-1px);
    border-left: 24px solid transparent; border-right: 24px solid transparent; border-bottom: 22px solid var(--koyu);
}
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 50px; }
.footer h4 { color: #fff; margin-bottom: 18px; font-size: 1.05rem; }
.footer .logo { color: #fff; margin-bottom: 16px; }
.footer p, .footer a { color: #a9abae; font-size: .92rem; }
.footer ul li { margin-bottom: 10px; }
.footer ul a:hover { color: var(--turkuaz-acik); }
.footer-iletisim li { display: flex; gap: 10px; margin-bottom: 14px; align-items: flex-start; }
.footer-iletisim svg { width: 18px; height: 18px; color: var(--turkuaz); flex: none; margin-top: 3px; }
.sosyal { display: flex; gap: 10px; margin-top: 18px; }
.sosyal a { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgba(255,255,255,.08); transition: var(--gecis); }
.sosyal a:hover { background: var(--turkuaz); }
.footer-alt { border-top: 1px solid rgba(255,255,255,.1); padding: 22px 0; text-align: center; font-size: .85rem; color: #85878a; }

/* =====================================================================
   LIGHTBOX
   ===================================================================== */
.galeri { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.galeri a { display: block; border-radius: 12px; overflow: hidden; aspect-ratio: 4/3; position: relative; }
.galeri img { width: 100%; height: 100%; object-fit: cover; transition: var(--gecis); }
.galeri a:hover img { transform: scale(1.07); }
.lightbox { position: fixed; inset: 0; background: rgba(35,31,32,.92); display: none; place-items: center; z-index: 2000; padding: 30px; }
.lightbox.acik { display: grid; }
.lightbox img { max-width: 90vw; max-height: 85vh; border-radius: 10px; }
.lightbox__kapat { position: absolute; top: 24px; right: 30px; color: #fff; font-size: 2.4rem; line-height: 1; }
.lightbox__ok { position: absolute; top: 50%; transform: translateY(-50%); color: #fff; font-size: 2.6rem; padding: 16px; user-select: none; }
.lightbox__ok--sol { left: 14px; } .lightbox__ok--sag { right: 14px; }

/* =====================================================================
   ÇEREZ ONAYI
   ===================================================================== */
.cerez {
    position: fixed; left: 20px; right: 20px; bottom: 20px; z-index: 1500;
    max-width: 820px; margin: 0 auto;
    background: #fff; border: 1px solid var(--cizgi); border-left: 5px solid var(--turkuaz);
    border-radius: 14px; box-shadow: 0 14px 40px rgba(35,31,32,.16);
    padding: 18px 22px; display: none; align-items: center; gap: 18px;
}
.cerez.acik { display: flex; animation: cerezGel .5s ease; }
.cerez p { margin: 0; font-size: .9rem; color: var(--koyu); flex: 1; }
.cerez p a { color: var(--turkuaz); font-weight: 600; text-decoration: underline; }
.cerez-butonlar { display: flex; gap: 10px; flex: none; }
.cerez-butonlar .btn { padding: 11px 20px; }
@keyframes cerezGel { from { transform: translateY(20px); opacity: 0; } to { transform: none; opacity: 1; } }
@media (max-width: 600px) { .cerez { flex-direction: column; align-items: stretch; text-align: center; } }

/* =====================================================================
   SCROLL-REVEAL
   ===================================================================== */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .7s ease, transform .7s cubic-bezier(.22,.61,.36,1); }
.reveal.gorundu { opacity: 1; transform: none; }
.reveal[data-gecikme="1"] { transition-delay: .1s; }
.reveal[data-gecikme="2"] { transition-delay: .2s; }
.reveal[data-gecikme="3"] { transition-delay: .3s; }

/* =====================================================================
   SAYFA BAŞLIĞI (iç sayfalar)
   ===================================================================== */
.sayfa-bas {
    padding: calc(var(--header-h) + 60px) 0 60px; position: relative; overflow: hidden;
    background: linear-gradient(135deg, #fff, #eef7f8);
}
.sayfa-bas h1 { margin-bottom: 10px; }
.ekmek { display: flex; gap: 8px; font-size: .88rem; color: var(--gri); }
.ekmek a:hover { color: var(--turkuaz); }

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width: 980px) {
    .izgara--3, .izgara--4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .galeri { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 760px) {
    .menu-btn { display: flex; }
    .nav {
        position: fixed; top: var(--header-h); right: 0; width: 78%; max-width: 320px;
        height: calc(100vh - var(--header-h)); background: #fff; flex-direction: column;
        align-items: flex-start; padding: 24px; gap: 6px; box-shadow: -10px 0 40px rgba(0,0,0,.1);
        transform: translateX(100%); transition: var(--gecis); z-index: 999;
    }
    .nav.acik { transform: none; }
    .nav a { width: 100%; padding: 14px 12px; }
    .nav a.active::after { display: none; }
    .header { background: #fff; box-shadow: 0 4px 24px rgba(35,31,32,.07); }
    .izgara--3, .izgara--4, .izgara--2 { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .galeri { grid-template-columns: repeat(2, 1fr); }
    .hero { min-height: auto; padding-top: calc(var(--header-h) + 50px); padding-bottom: 70px; }
}