/* ==========================================================================
   Galvaniz Sac — Modern Industrial Theme
   Tek dosya, framework yok, sistem fontu (hızlı CWV)
   ========================================================================== */

:root {
  --navy-900: #0b1220;
  --navy-800: #0f172a;
  --navy-700: #1e293b;
  --navy-600: #334155;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white: #ffffff;

  --amber: #f59e0b;
  --amber-dark: #d97706;
  --orange: #ea580c;
  --green: #16a34a;
  --red: #dc2626;

  --ink: #0f172a;
  --body: #334155;
  --muted: #64748b;

  --ring: rgba(245, 158, 11, .35);
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 1px 3px rgba(15,23,42,.10);
  --shadow-md: 0 4px 6px rgba(15,23,42,.05), 0 10px 20px rgba(15,23,42,.08);
  --shadow-lg: 0 20px 40px rgba(15,23,42,.12);

  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1200px;
  --gap: clamp(1rem, 2vw, 1.5rem);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--body);
  background: var(--white);
  line-height: 1.7;
  font-size: 17px;
  overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--amber-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--ink); line-height: 1.25; font-weight: 800; margin: 0 0 .5em; }
h1 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.35rem, 2.6vw, 1.9rem); letter-spacing: -.01em; margin-top: 2rem; }
h3 { font-size: clamp(1.1rem, 2vw, 1.3rem); margin-top: 1.4rem; }
p { margin: 0 0 1rem; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }
.section { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.section--tight { padding-block: clamp(1.5rem, 4vw, 2.5rem); }
.bg-slate { background: var(--slate-50); }
.bg-navy { background: var(--navy-800); color: var(--slate-200); }
.bg-navy h2, .bg-navy h3 { color: #fff; }

.eyebrow { color: var(--amber-dark); font-weight: 800; text-transform: uppercase; letter-spacing: .08em; font-size: .82rem; margin-bottom: .4rem; }
.lead { font-size: 1.12rem; color: var(--navy-700); }
.text-muted { color: var(--muted); }
.center { text-align: center; }
.mx-auto { margin-inline: auto; }
.maxw-720 { max-width: 720px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  font-weight: 700; font-size: 1rem; line-height: 1;
  padding: .85rem 1.4rem; border-radius: var(--radius-sm);
  border: 2px solid transparent; cursor: pointer; transition: .18s ease;
  text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--amber); color: var(--navy-900); }
.btn-primary:hover { background: var(--amber-dark); color: #fff; }
.btn-whatsapp { background: var(--green); color: #fff; }
.btn-whatsapp:hover { background: #15803d; }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,.4); }
.btn-outline:hover { background: rgba(255,255,255,.1); }
.btn-ghost { background: var(--slate-100); color: var(--navy-800); }
.btn-ghost:hover { background: var(--slate-200); }
.btn-lg { padding: 1rem 1.8rem; font-size: 1.06rem; }
.btn-sm { padding: .55rem .9rem; font-size: .9rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15,23,42,.98); color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.08);
  backdrop-filter: saturate(140%) blur(6px);
}
.topbar { background: var(--navy-900); font-size: .84rem; color: var(--slate-300); }
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding-block: .45rem; flex-wrap: wrap; }
.topbar a { color: var(--slate-200); }
.topbar .topbar-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.topbar strong { color: var(--amber); }

.navbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .7rem; }
.brand { display: flex; align-items: center; gap: .65rem; font-weight: 900; color: #fff; font-size: 1.25rem; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand .brand-mark { width: 40px; height: 40px; flex: 0 0 auto; }
.brand span b { color: var(--amber); }
.brand small { display: block; font-size: .64rem; font-weight: 600; letter-spacing: .12em; color: var(--slate-400); text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: .2rem; }
.main-nav > ul { list-style: none; display: flex; align-items: center; gap: .1rem; margin: 0; padding: 0; }
.main-nav a { color: var(--slate-200); font-weight: 600; padding: .6rem .85rem; border-radius: 8px; display: inline-flex; align-items: center; gap: .3rem; }
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.08); text-decoration: none; }
.has-mega { position: static; }

.nav-cta { display: flex; align-items: center; gap: .6rem; }

/* Mega menu */
.mega {
  position: absolute; left: 0; right: 0; top: 100%;
  background: #fff; color: var(--body);
  box-shadow: var(--shadow-lg); border-top: 3px solid var(--amber);
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: .18s ease; z-index: 90;
}
.has-mega:hover .mega, .has-mega:focus-within .mega, .mega.open { opacity: 1; visibility: visible; transform: translateY(0); }
.mega-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.5rem; padding: 1.8rem clamp(1rem,4vw,2rem); max-width: var(--maxw); margin-inline: auto; }
.mega-col h4 { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--amber-dark); margin: 0 0 .6rem; padding-bottom: .4rem; border-bottom: 1px solid var(--slate-200); }
.mega-col ul { list-style: none; margin: 0; padding: 0; }
.mega-col li { margin: 0; }
.mega-col a { display: block; padding: .28rem 0; font-size: .92rem; font-weight: 500; color: var(--navy-700); }
.mega-col a:hover { color: var(--amber-dark); }
.mega-col .more { font-weight: 700; color: var(--amber-dark); font-size: .86rem; margin-top: .4rem; }

/* mobile */
.nav-toggle { display: none; background: transparent; border: 0; color: #fff; cursor: pointer; padding: .4rem; }
.nav-toggle svg { width: 28px; height: 28px; }

@media (max-width: 980px) {
  .main-nav { position: fixed; inset: 0 0 0 auto; width: min(88vw, 360px);
    background: var(--navy-800); flex-direction: column; align-items: stretch;
    padding: 5rem 1.2rem 2rem; transform: translateX(100%); transition: .25s ease;
    overflow-y: auto; z-index: 120; box-shadow: var(--shadow-lg); }
  .main-nav.open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; align-items: stretch; gap: .1rem; width: 100%; }
  .main-nav a { padding: .85rem .6rem; border-bottom: 1px solid rgba(255,255,255,.06); border-radius: 0; }
  .nav-toggle { display: inline-flex; }
  .nav-cta .btn span.hide-sm { display: none; }
  .mega { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none;
    background: transparent; border: 0; }
  .mega-grid { grid-template-columns: 1fr; gap: .6rem; padding: .4rem 0 .8rem; }
  .mega-col h4 { color: var(--slate-400); border-color: rgba(255,255,255,.1); }
  .mega-col a { color: var(--slate-200); }
  .mega-col a:hover { color: var(--amber); }
  .nav-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 110; opacity: 0; visibility: hidden; transition: .2s; }
  .nav-backdrop.open { opacity: 1; visibility: visible; }
  .nav-close { position: absolute; top: 1rem; right: 1rem; background: transparent; border: 0; color: #fff; cursor: pointer; }
  .nav-close svg { width: 26px; height: 26px; }
}
@media (min-width: 981px) { .nav-close { display: none; } }

/* ---------- Hero ---------- */
.hero { position: relative; background:
  radial-gradient(1200px 500px at 80% -10%, rgba(245,158,11,.16), transparent 60%),
  linear-gradient(180deg, var(--navy-800), var(--navy-900));
  color: #fff; overflow: hidden; }
.hero::before { content:""; position:absolute; inset:0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Cpath d='M0 39.5h40M39.5 0v40' stroke='%23ffffff' stroke-opacity='0.05'/%3E%3C/svg%3E");
  opacity:.6; }
.hero .container { position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(1.5rem,4vw,3rem); align-items: center; padding-block: clamp(2.5rem,6vw,4.5rem); }
.hero h1 { color: #fff; }
.hero p { color: var(--slate-300); font-size: 1.14rem; max-width: 40ch; }
.hero .btn-row { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.4rem; }
.hero-badges { display: flex; gap: 1.4rem; flex-wrap: wrap; margin-top: 1.8rem; color: var(--slate-300); font-size: .92rem; }
.hero-badges b { color: #fff; display: block; font-size: 1.4rem; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } .hero-visual { order: -1; } }

/* ---------- Price/spec tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--slate-200); border-radius: var(--radius); box-shadow: var(--shadow-sm); margin: 1.2rem 0; }
table.data { width: 100%; border-collapse: collapse; font-size: .96rem; min-width: 480px; }
table.data caption { text-align: left; font-weight: 700; color: var(--navy-700); padding: .8rem 1rem; background: var(--slate-50); border-bottom: 1px solid var(--slate-200); caption-side: top; }
table.data th, table.data td { padding: .72rem 1rem; text-align: left; border-bottom: 1px solid var(--slate-200); }
table.data thead th { background: var(--navy-800); color: #fff; font-weight: 700; font-size: .88rem; text-transform: uppercase; letter-spacing: .03em; border-bottom: 0; }
table.data tbody tr:nth-child(even) { background: var(--slate-50); }
table.data tbody tr:hover { background: #fff7ed; }
table.data td.price { font-weight: 800; color: var(--navy-800); white-space: nowrap; }
.price-note { font-size: .86rem; color: var(--muted); font-style: italic; margin-top: .4rem; }

/* ---------- TL;DR / Key facts box ---------- */
.keyfacts { background: linear-gradient(180deg, #fff, var(--slate-50)); border: 1px solid var(--slate-200);
  border-left: 5px solid var(--amber); border-radius: var(--radius); padding: 1.3rem 1.5rem; margin: 1.4rem 0; box-shadow: var(--shadow-sm); }
.keyfacts h2 { margin: 0 0 .7rem; font-size: 1.15rem; display: flex; align-items: center; gap: .5rem; }
.keyfacts dl { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1rem; margin: 0; }
.keyfacts dt { font-weight: 700; color: var(--navy-700); }
.keyfacts dd { margin: 0; color: var(--body); }
@media (max-width: 560px){ .keyfacts dl { grid-template-columns: 1fr; gap: .1rem .5rem; } .keyfacts dt { margin-top: .5rem; } }

/* ---------- Cards & grids ---------- */
.grid { display: grid; gap: var(--gap); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px){ .grid-3, .grid-4 { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 560px){ .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow-sm); transition: .18s ease; height: 100%; }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: var(--slate-300); }
.card h3 { margin-top: 0; }
.card p { color: var(--muted); font-size: .96rem; margin-bottom: .6rem; }
a.card { color: inherit; display: block; }
a.card:hover { text-decoration: none; }

.cat-card { position: relative; overflow: hidden; }
.cat-card .cat-icon { width: 54px; height: 54px; margin-bottom: .8rem; color: var(--amber-dark); }
.cat-card .count { font-size: .8rem; color: var(--amber-dark); font-weight: 700; }
.arrow-link { color: var(--amber-dark); font-weight: 700; font-size: .92rem; display: inline-flex; align-items: center; gap: .3rem; }

.chip-list { display: flex; flex-wrap: wrap; gap: .5rem; margin: .6rem 0 0; padding: 0; list-style: none; }
.chip-list a { display: inline-block; padding: .4rem .8rem; background: var(--slate-100); border: 1px solid var(--slate-200); border-radius: 999px; font-size: .88rem; font-weight: 600; color: var(--navy-700); }
.chip-list a:hover { background: var(--amber); color: var(--navy-900); border-color: var(--amber); text-decoration: none; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { background: var(--slate-50); border-bottom: 1px solid var(--slate-200); font-size: .88rem; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: .4rem; margin: 0; padding: .7rem 0; align-items: center; }
.breadcrumb li { display: flex; align-items: center; gap: .4rem; color: var(--muted); }
.breadcrumb li:not(:last-child)::after { content: "›"; color: var(--slate-400); }
.breadcrumb a { color: var(--slate-500); font-weight: 600; }
.breadcrumb a:hover { color: var(--amber-dark); }
.breadcrumb [aria-current] { color: var(--navy-800); font-weight: 700; }

/* ---------- Article / prose ---------- */
.article { display: grid; grid-template-columns: 1fr 300px; gap: clamp(1.5rem,4vw,3rem); align-items: start; }
@media (max-width: 980px){ .article { grid-template-columns: 1fr; } .toc-wrap { position: static !important; } }
.prose { max-width: 100%; }
.prose h2 { padding-top: .4rem; }
.prose ul, .prose ol { padding-left: 1.3rem; margin: 0 0 1.1rem; }
.prose li { margin-bottom: .4rem; }
.prose strong { color: var(--navy-800); }
.prose table { margin: 1.2rem 0; }

.toc-wrap { position: sticky; top: 92px; }
.toc { background: #fff; border: 1px solid var(--slate-200); border-radius: var(--radius); padding: 1.1rem 1.2rem; box-shadow: var(--shadow-sm); }
.toc h4 { margin: 0 0 .6rem; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--amber-dark); }
.toc ol { list-style: none; counter-reset: t; margin: 0; padding: 0; font-size: .9rem; }
.toc li { counter-increment: t; margin-bottom: .3rem; }
.toc a { color: var(--navy-700); font-weight: 500; }
.toc a::before { content: counter(t) ". "; color: var(--slate-400); font-weight: 700; }

/* ---------- FAQ accordion ---------- */
.faq { margin: 1rem 0; }
.faq details { border: 1px solid var(--slate-200); border-radius: var(--radius-sm); margin-bottom: .7rem; background: #fff; box-shadow: var(--shadow-sm); overflow: hidden; }
.faq summary { cursor: pointer; padding: 1rem 1.2rem; font-weight: 700; color: var(--navy-800); list-style: none; display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; color: var(--amber-dark); font-weight: 700; transition: .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details[open] summary { background: var(--slate-50); }
.faq .faq-a { padding: 0 1.2rem 1.1rem; color: var(--body); }

/* ---------- CTA band ---------- */
.cta-band { background:
  radial-gradient(800px 300px at 20% 0%, rgba(245,158,11,.18), transparent 60%),
  linear-gradient(135deg, var(--navy-800), var(--navy-900)); color: #fff; border-radius: var(--radius); padding: clamp(1.6rem,4vw,2.6rem); text-align: center; box-shadow: var(--shadow-md); }
.cta-band h2 { color: #fff; margin-top: 0; }
.cta-band p { color: var(--slate-300); max-width: 60ch; margin-inline: auto; }
.cta-band .btn-row { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; margin-top: 1.2rem; }

/* ---------- Feature / trust row ---------- */
.features { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--gap); }
@media (max-width: 900px){ .features { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 480px){ .features { grid-template-columns: 1fr; } }
.feature { text-align: center; padding: 1.2rem; }
.feature .ico { width: 46px; height: 46px; margin: 0 auto .7rem; color: var(--amber-dark); }
.feature h3 { font-size: 1.05rem; margin: 0 0 .3rem; }
.feature p { color: var(--muted); font-size: .92rem; margin: 0; }

/* ---------- Product visual (SVG) ---------- */
.product-visual { background: linear-gradient(135deg, var(--navy-700), var(--navy-900)); border-radius: var(--radius); box-shadow: var(--shadow-md); overflow: hidden; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color: var(--slate-400); font-size: .93rem; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2rem; padding-block: clamp(2.5rem,5vw,3.5rem); }
@media (max-width: 900px){ .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px){ .footer-top { grid-template-columns: 1fr; } }
.site-footer h4 { color: #fff; font-size: .95rem; text-transform: uppercase; letter-spacing: .05em; margin: 0 0 1rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: .5rem; }
.site-footer a { color: var(--slate-400); }
.site-footer a:hover { color: var(--amber); }
.footer-brand .brand { color: #fff; margin-bottom: .8rem; }
.footer-brand p { color: var(--slate-400); max-width: 34ch; }
.footer-contact strong { color: var(--slate-200); }
.footer-contact address { font-style: normal; color: var(--slate-400); }
.footer-contact a { color: var(--amber); font-weight: 700; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-block: 1.2rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font-size: .85rem; }

/* ---------- Floating WhatsApp ---------- */
.fab-wa { position: fixed; right: 18px; bottom: 18px; z-index: 130; width: 58px; height: 58px; border-radius: 50%;
  background: var(--green); color: #fff; display: grid; place-items: center; box-shadow: var(--shadow-lg); }
.fab-wa:hover { background: #15803d; transform: scale(1.05); }
.fab-wa svg { width: 32px; height: 32px; }

/* ---------- Misc ---------- */
.note { background: #fffbeb; border: 1px solid #fde68a; border-radius: var(--radius-sm); padding: 1rem 1.2rem; color: #92400e; margin: 1rem 0; font-size: .95rem; }
.badge { display: inline-block; background: var(--slate-100); color: var(--navy-700); border-radius: 999px; padding: .2rem .7rem; font-size: .78rem; font-weight: 700; }
.badge-amber { background: #fef3c7; color: var(--amber-dark); }
.divider { height: 1px; background: var(--slate-200); border: 0; margin: 2rem 0; }
.skip-link { position: absolute; left: -999px; top: 0; background: var(--amber); color: #000; padding: .6rem 1rem; z-index: 200; }
.skip-link:focus { left: .5rem; top: .5rem; }
:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: 4px; }