/* ==========================================================================
   Bordrocum v2 — Ortak Tasarım Sistemi (Design System)
   Tüm sayfalar bu dosyayı kullanır → tutarlı renk, tipografi ve bileşenler.
   Build adımı yoktur; Express tarafından statik servis edilir.
   ========================================================================== */

:root {
    /* Renk paleti */
    --brand: #4f46e5;
    --brand-600: #4338ca;
    --brand-700: #3730a3;
    --brand-50: #eef2ff;
    --brand-100: #e0e7ff;

    --accent: #10b981;
    --accent-600: #059669;
    --accent-50: #ecfdf5;

    --warning: #f59e0b;
    --warning-50: #fffbeb;
    --danger: #ef4444;
    --danger-600: #dc2626;
    --danger-50: #fef2f2;
    --info: #0ea5e9;

    /* Nötrler */
    --bg: #f1f5f9;
    --surface: #ffffff;
    --surface-2: #f8fafc;
    --text: #0f172a;
    --text-2: #475569;
    --text-3: #94a3b8;
    --border: #e2e8f0;
    --border-2: #cbd5e1;

    /* Tipografi */
    --font: 'Inter', 'Segoe UI', system-ui, -apple-system, Tahoma, sans-serif;

    /* Geometri */
    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 18px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
    --shadow: 0 4px 12px rgba(15, 23, 42, .08), 0 2px 4px rgba(15, 23, 42, .04);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, .12);

    --maxw: 1280px;
    --header-h: 64px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--text); line-height: 1.25; font-weight: 700; }

/* ---------- Üst Bar / Navigasyon ---------- */
.bc-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-h);
    background: rgba(255, 255, 255, .85);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
}
.bc-header__inner {
    max-width: var(--maxw);
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 18px;
}
.bc-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.18rem;
    color: var(--text);
    letter-spacing: -.02em;
}
.bc-brand:hover { text-decoration: none; }
.bc-brand__text { white-space: nowrap; }
.bc-brand .bc-logo {
    width: 34px; height: 34px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--brand), var(--accent));
    color: #fff;
    display: grid; place-items: center;
    font-size: 1rem;
    box-shadow: var(--shadow-sm);
}
.bc-brand b { color: var(--brand); }
.bc-nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.bc-nav a {
    color: var(--text-2);
    font-weight: 600;
    font-size: .94rem;
    padding: 8px 14px;
    border-radius: 9px;
    transition: all .15s ease;
}
.bc-nav a:hover { color: var(--brand); background: var(--brand-50); text-decoration: none; }
.bc-nav a.active { color: var(--brand); background: var(--brand-50); }
.bc-nav .bc-cta {
    color: #fff; background: var(--brand);
}
.bc-nav .bc-cta:hover { color: #fff; background: var(--brand-600); }

.bc-burger { display: none; margin-left: auto; background: none; border: 0; font-size: 1.4rem; color: var(--text); cursor: pointer; }

@media (max-width: 760px) {
    .bc-nav {
        position: fixed; inset: var(--header-h) 0 auto 0;
        flex-direction: column; align-items: stretch;
        background: var(--surface); border-bottom: 1px solid var(--border);
        padding: 10px; gap: 4px; box-shadow: var(--shadow);
        display: none;
    }
    .bc-nav.open { display: flex; }
    .bc-burger { display: block; }
}

/* ---------- Düzen ---------- */
.bc-container { max-width: var(--maxw); margin: 0 auto; padding: 24px 20px 64px; }
.bc-container--narrow { max-width: 920px; }

/* ---------- Kart ---------- */
.bc-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 22px;
}
.bc-card + .bc-card { margin-top: 18px; }
.bc-card__title {
    margin: 0 0 16px;
    font-size: 1.12rem;
    display: flex; align-items: center; gap: 10px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.bc-card__title i { color: var(--brand); }

/* ---------- Hero ---------- */
.bc-hero {
    background: linear-gradient(135deg, var(--brand-50), var(--accent-50));
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    margin-bottom: 22px;
}
.bc-hero h1 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 10px; letter-spacing: -.02em; }
.bc-hero p { color: var(--text-2); font-size: 1.05rem; margin: 0; max-width: 70ch; }

/* ---------- Butonlar ---------- */
.bc-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font-family: inherit; font-weight: 600; font-size: .95rem;
    padding: 11px 18px;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .15s ease;
    text-decoration: none;
    line-height: 1;
}
.bc-btn:hover { text-decoration: none; transform: translateY(-1px); }
.bc-btn:active { transform: translateY(0); }
.bc-btn--primary { background: var(--brand); color: #fff; }
.bc-btn--primary:hover { background: var(--brand-600); color: #fff; }
.bc-btn--accent { background: var(--accent); color: #fff; }
.bc-btn--accent:hover { background: var(--accent-600); color: #fff; }
.bc-btn--danger { background: var(--danger); color: #fff; }
.bc-btn--danger:hover { background: var(--danger-600); color: #fff; }
.bc-btn--ghost { background: var(--surface); color: var(--text); border-color: var(--border-2); }
.bc-btn--ghost:hover { background: var(--surface-2); color: var(--brand); }
.bc-btn--block { width: 100%; }
.bc-btn--lg { padding: 14px 22px; font-size: 1.02rem; }
.bc-btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }

/* ---------- Form ---------- */
.bc-field { margin-bottom: 14px; }
.bc-label {
    display: block; font-weight: 600; font-size: .85rem;
    color: var(--text-2); margin-bottom: 6px;
}
.bc-input, .bc-select, textarea.bc-input {
    width: 100%;
    font-family: inherit; font-size: .96rem;
    padding: 10px 12px;
    border: 1px solid var(--border-2);
    border-radius: 10px;
    background: var(--surface);
    color: var(--text);
    transition: border-color .15s, box-shadow .15s;
}
.bc-input:focus, .bc-select:focus, textarea.bc-input:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px var(--brand-100);
}
.bc-hint { font-size: .8rem; color: var(--text-3); margin-top: 4px; }

/* ---------- Tablo ---------- */
.bc-table-wrap { overflow-x: auto; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.bc-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.bc-table th, .bc-table td { padding: 10px 12px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
.bc-table th:first-child, .bc-table td:first-child { text-align: left; }
.bc-table thead th {
    background: var(--surface-2); color: var(--text-2);
    font-weight: 700; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em;
    position: sticky; top: 0;
}
.bc-table tbody tr:hover { background: var(--brand-50); }
.bc-table tbody tr:last-child td { border-bottom: 0; }

/* ---------- Rozet / Uyarı ---------- */
.bc-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 3px 10px; border-radius: 999px;
    font-size: .78rem; font-weight: 600;
    background: var(--brand-50); color: var(--brand-700);
}
.bc-badge--accent { background: var(--accent-50); color: var(--accent-600); }
.bc-badge--warn { background: var(--warning-50); color: #b45309; }

.bc-alert {
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-size: .92rem;
    display: flex; gap: 10px; align-items: flex-start;
}
.bc-alert i { margin-top: 2px; }
.bc-alert--info { background: #f0f9ff; border-color: #bae6fd; color: #075985; }
.bc-alert--warn { background: var(--warning-50); border-color: #fde68a; color: #92400e; }
.bc-alert--accent { background: var(--accent-50); border-color: #a7f3d0; color: #065f46; }

/* ---------- İstatistik kutusu ---------- */
.bc-stat {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 18px;
}
.bc-stat__label { font-size: .82rem; color: var(--text-2); font-weight: 600; }
.bc-stat__value { font-size: 1.5rem; font-weight: 800; color: var(--text); margin-top: 4px; letter-spacing: -.02em; }
.bc-grid { display: grid; gap: 16px; }
.bc-grid--2 { grid-template-columns: repeat(2, 1fr); }
.bc-grid--3 { grid-template-columns: repeat(3, 1fr); }
.bc-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .bc-grid--3, .bc-grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .bc-grid--2, .bc-grid--3, .bc-grid--4 { grid-template-columns: 1fr; } }

/* ---------- Footer ---------- */
.bc-footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-2);
    padding: 28px 20px;
    font-size: .9rem;
}
.bc-footer__inner {
    max-width: var(--maxw); margin: 0 auto;
    display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between;
}
.bc-footer a { color: var(--text-2); font-weight: 600; }
.bc-footer a:hover { color: var(--brand); }
.bc-footer__links { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- Yardımcılar ---------- */
.bc-mt-0 { margin-top: 0; }
.bc-text-center { text-align: center; }
.bc-muted { color: var(--text-2); }
.hidden { display: none !important; }

/* SEO içerik tipografi */
.bc-prose { max-width: 75ch; }
.bc-prose h2 { font-size: 1.35rem; margin: 28px 0 12px; }
.bc-prose h3 { font-size: 1.1rem; margin: 22px 0 8px; }
.bc-prose p { color: var(--text-2); margin: 0 0 12px; }
.bc-prose ul { color: var(--text-2); padding-left: 20px; }
.bc-prose li { margin-bottom: 6px; }

/* Akordeon (FAQ) */
.bc-faq details {
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    padding: 4px 16px; margin-bottom: 10px; background: var(--surface);
}
.bc-faq summary {
    cursor: pointer; font-weight: 600; padding: 12px 0;
    list-style: none; display: flex; justify-content: space-between; align-items: center;
}
.bc-faq summary::-webkit-details-marker { display: none; }
.bc-faq summary::after { content: '+'; color: var(--brand); font-size: 1.3rem; font-weight: 400; }
.bc-faq details[open] summary::after { content: '−'; }
.bc-faq details[open] summary { border-bottom: 1px solid var(--border); }
.bc-faq .bc-faq__body { padding: 12px 0; color: var(--text-2); }