/* ==========================================================================
   Theme: tech (teknotayf) — purpose-built tech portal
   Dark-first, kategori renk sistemi, Portal + Feed iki görünüm modu.
   Yüklenme sırası: base → layout → components → tech.css (en son, override eder)
   ========================================================================== */

/* ---------- Tasarım token'ları ---------- */
:root {
    --color-bg: #f6f7f9;
    --color-surface: #ffffff;
    --color-surface-2: #f0f2f5;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-text: #0b0f19;
    --color-text-muted: #5b6573;
    --color-border: #e3e6ea;
    --font-heading: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    --tt-radius: 12px;
    --tt-maxw: 1180px;
}
html[data-theme="dark"] {
    --color-bg: #0a0c10;
    --color-surface: #11151c;
    --color-surface-2: #161b22;
    --color-accent: #4d9fff;
    --color-accent-hover: #79b8ff;
    --color-text: #e6edf3;
    --color-text-muted: #9aa4b2;
    --color-border: #232a33;
}

body { background: var(--color-bg); color: var(--color-text); }

/* ---------- Kategori renk sistemi ---------- */
.cat-genel       { --cat: #6366f1; }
.cat-yapayzeka   { --cat: #8b5cf6; }
.cat-blockchain  { --cat: #f7931a; }
.cat-fintech     { --cat: #10b981; }
.cat-guvenlik    { --cat: #ef4444; }
.cat-uzay        { --cat: #3b82f6; }
.cat-robotik     { --cat: #06b6d4; }
.cat-yazilim     { --cat: #eab308; }
.cat-donanim     { --cat: #ec4899; }
.cat-bilim       { --cat: #14b8a6; }
.cat-oyun        { --cat: #a855f7; }
.cat-otomotiv    { --cat: #22c55e; }
[class*="cat-"]:not([class*="cat-"][class*=" "]) { } /* no-op guard */

/* ---------- Header / nav ---------- */
.site-header { border-bottom: 1px solid var(--color-border); background: var(--color-surface); }
.site-header__inner { max-width: var(--tt-maxw); }
.site-logo { font-family: var(--font-heading); font-weight: 800; letter-spacing: -0.02em; }
.site-nav--pills .pill-link {
    border-radius: 999px;
    font-weight: 600;
    transition: color .15s ease, background-color .15s ease;
}
.tt-viewtoggle {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 12px; border: 1px solid var(--color-border);
    border-radius: 999px; font-size: 13px; font-weight: 600;
    color: var(--color-text); background: var(--color-surface);
    cursor: pointer; white-space: nowrap;
    transition: border-color .15s ease, color .15s ease;
}
.tt-viewtoggle:hover { border-color: var(--color-accent); color: var(--color-accent); }
.tt-viewtoggle svg { width: 16px; height: 16px; }

/* ---------- Sayfa kabı ---------- */
.container { max-width: var(--tt-maxw); }
.tt-home { display: block; }

/* ==========================================================================
   PORTAL MODU
   ========================================================================== */

/* Hero */
.tt-hero {
    position: relative; display: grid; grid-template-columns: 1.4fr 1fr;
    gap: 22px; margin: 22px 0 30px;
}
@media (max-width: 760px) { .tt-hero { grid-template-columns: 1fr; } }

.tt-hero__lead {
    position: relative; border-radius: var(--tt-radius); overflow: hidden;
    background: var(--color-surface-2); min-height: 340px;
    display: flex; align-items: flex-end;
    border: 1px solid var(--color-border);
}
.tt-hero__lead img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tt-hero__lead .tt-hero__veil {
    position: relative; width: 100%; padding: 60px 26px 24px;
    background: linear-gradient(to top, rgba(0,0,0,.88) 0%, rgba(0,0,0,.35) 55%, transparent 100%);
    color: #fff;
}
.tt-hero__lead.no-img .tt-hero__veil { background: none; color: var(--color-text); }
.tt-hero__lead.no-img { background:
    radial-gradient(120% 120% at 0% 0%, color-mix(in srgb, var(--cat, var(--color-accent)) 22%, transparent), transparent 60%),
    var(--color-surface-2); }
.tt-hero__title { font-family: var(--font-heading); font-weight: 800; font-size: clamp(22px, 3vw, 34px); line-height: 1.15; letter-spacing: -0.02em; margin: 10px 0 0; }
.tt-hero__title a { color: inherit; text-decoration: none; }

.tt-hero__side { display: grid; grid-template-rows: repeat(3, 1fr); gap: 14px; }
.tt-hero__sideitem {
    display: grid; grid-template-columns: 92px 1fr; gap: 12px; align-items: stretch;
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--tt-radius); overflow: hidden; text-decoration: none;
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.tt-hero__sideitem:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0,0,0,.12); border-color: color-mix(in srgb, var(--cat, var(--color-accent)) 50%, var(--color-border)); }
.tt-hero__sidethumb { position: relative; background: var(--color-surface-2); }
.tt-hero__sidethumb img { position:absolute; inset:0; width:100%; height:100%; object-fit: cover; }
.tt-hero__sidebody { padding: 10px 12px 10px 0; display: flex; flex-direction: column; gap: 6px; justify-content: center; }
.tt-hero__sidetitle { font-weight: 700; font-size: 14px; line-height: 1.3; color: var(--color-text); }

/* Kategori şeridi (rail) */
.tt-rail { margin: 0 0 34px; }
.tt-rail__head { display: flex; align-items: center; gap: 12px; margin: 0 0 14px; }
.tt-rail__bar { width: 4px; height: 20px; border-radius: 2px; background: var(--cat, var(--color-accent)); }
.tt-rail__name {
    font-family: var(--font-heading); font-weight: 800; font-size: 18px; letter-spacing: -0.01em;
    color: var(--color-text); text-decoration: none;
}
.tt-rail__name:hover { color: var(--cat, var(--color-accent)); }
.tt-rail__all { margin-left: auto; font-size: 13px; font-weight: 600; color: var(--color-text-muted); text-decoration: none; }
.tt-rail__all:hover { color: var(--cat, var(--color-accent)); }

/* Statik grid (yedek) */
.tt-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 980px) { .tt-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .tt-grid { grid-template-columns: 1fr; } }

/* Netflix tarzı yatay kayan şerit */
.tt-track-wrap { position: relative; }
.tt-track {
    display: flex; gap: 16px; overflow-x: auto; scroll-behavior: smooth;
    scroll-snap-type: x mandatory; padding: 4px 2px 6px;
    scrollbar-width: thin; scrollbar-color: var(--color-border) transparent;
}
.tt-track::-webkit-scrollbar { height: 6px; }
.tt-track::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
.tt-track::-webkit-scrollbar-track { background: transparent; }
.tt-track .tt-card { flex: 0 0 270px; width: 270px; scroll-snap-align: start; }
@media (max-width: 560px) { .tt-track .tt-card { flex-basis: 78vw; width: 78vw; } }

/* Kaydırma okları */
.tt-arrow {
    position: absolute; top: 0; bottom: 12px; width: 44px; z-index: 3;
    display: flex; align-items: center; justify-content: center;
    border: none; cursor: pointer; color: var(--color-text);
    background: linear-gradient(to right, transparent, var(--color-bg) 70%);
    opacity: 0; transition: opacity .15s ease;
}
.tt-arrow--next { right: -2px; background: linear-gradient(to left, var(--color-bg) 70%, transparent); }
.tt-arrow--prev { left: -2px; }
.tt-track-wrap:hover .tt-arrow { opacity: 1; }
.tt-arrow svg { width: 26px; height: 26px; filter: drop-shadow(0 1px 3px rgba(0,0,0,.4)); }
.tt-arrow:hover { color: var(--cat, var(--color-accent)); }
@media (hover: none) { .tt-arrow { display: none; } }

/* Kart (tt-card) — kaymasız hover (sadece transform+shadow, reflow yok) */
.tt-card {
    display: flex; flex-direction: column;
    background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--tt-radius); overflow: hidden; text-decoration: none;
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
    will-change: transform;
}
.tt-card:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(0,0,0,.14); border-color: color-mix(in srgb, var(--cat, var(--color-accent)) 55%, var(--color-border)); }
.tt-card__media { position: relative; aspect-ratio: 16 / 10; background: var(--color-surface-2); }
.tt-card__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tt-card__media.no-img {
    background:
      radial-gradient(120% 120% at 100% 0%, color-mix(in srgb, var(--cat, var(--color-accent)) 26%, transparent), transparent 62%),
      var(--color-surface-2);
}
.tt-card__media.no-img::after {
    content: attr(data-mono); position: absolute; left: 14px; bottom: 10px;
    font-family: ui-monospace, monospace; font-size: 12px; font-weight: 700;
    color: color-mix(in srgb, var(--cat, var(--color-accent)) 90%, var(--color-text));
    opacity: .8; letter-spacing: .04em;
}
.tt-card__body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.tt-tag {
    align-self: flex-start; display: inline-flex; align-items: center; gap: 5px;
    font-size: 11px; font-weight: 700; letter-spacing: .03em; text-transform: uppercase;
    color: var(--cat, var(--color-accent));
    background: color-mix(in srgb, var(--cat, var(--color-accent)) 12%, transparent);
    padding: 3px 8px; border-radius: 6px;
}
.tt-card__title { font-family: var(--font-heading); font-weight: 700; font-size: 15px; line-height: 1.32; color: var(--color-text); letter-spacing: -0.01em; }
.tt-card__meta { margin-top: auto; display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--color-text-muted); }
.tt-card__meta .dot { width: 4px; height: 4px; border-radius: 50%; background: var(--color-text-muted); }

/* ==========================================================================
   FEED MODU (yoğun, sıralı liste)
   ========================================================================== */
.tt-feed { max-width: 760px; margin: 22px auto; display: flex; flex-direction: column; }
.tt-feed__item {
    display: grid; grid-template-columns: 34px 1fr auto; gap: 14px; align-items: start;
    padding: 16px 6px; border-bottom: 1px solid var(--color-border); text-decoration: none;
    transition: background-color .12s ease;
}
.tt-feed__item:hover { background: var(--color-surface); }
.tt-feed__rank { font-family: ui-monospace, monospace; font-size: 14px; font-weight: 700; color: var(--color-text-muted); padding-top: 2px; }
.tt-feed__main { min-width: 0; }
.tt-feed__title { font-family: var(--font-heading); font-weight: 700; font-size: 16px; line-height: 1.32; color: var(--color-text); letter-spacing: -0.01em; }
.tt-feed__sub { margin-top: 6px; display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--color-text-muted); flex-wrap: wrap; }
.tt-feed__catdot { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--cat, var(--color-accent)); }
.tt-feed__catdot::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--cat, var(--color-accent)); }
.tt-feed__sub .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--color-text-muted); }
.tt-feed__thumb { width: 84px; aspect-ratio: 16/10; border-radius: 8px; overflow: hidden; background: var(--color-surface-2); position: relative; }
.tt-feed__thumb img { position:absolute; inset:0; width:100%; height:100%; object-fit: cover; }
@media (max-width: 560px) { .tt-feed__item { grid-template-columns: 26px 1fr; } .tt-feed__thumb { display:none; } }

/* ---------- Boş durum ---------- */
.tt-empty { text-align: center; padding: 80px 20px; color: var(--color-text-muted); }
.tt-empty h2 { font-family: var(--font-heading); color: var(--color-text); margin-bottom: 8px; }

/* ---------- Makale gövdesi (okuma) ---------- */
.article-body { max-width: 720px; margin-left: auto; margin-right: auto; }

/* Eski generic .article-card jank'ini bu temada nötrle (kullanmıyoruz ama yüklü) */
.article-card { transition: transform .15s ease, box-shadow .15s ease; }