/* ==========================================================
   ERP Danışmanı — Tasarım Sistemi
   Palet: Kurumsal lacivert + çelik mavi zemin, bakır vurgu
   Tipografi: Space Grotesk (başlık) / Inter (gövde) / IBM Plex Mono (veri)
   Motif: "Modül Bağlantısı" — ERP'nin modülleri birbirine bağlayan
   doğasını yansıtan ince konektör çizgileri
   ========================================================== */

:root {
    --navy: #0F1F3D;
    --navy-light: #16294D;
    --steel: #2C4A6E;
    --paper: #F5F6F8;
    --panel: #FFFFFF;
    --ink: #1A1D24;
    --ink-soft: #55606E;
    --amber: #C77D33;
    --amber-dark: #A8641F;
    --line: #DEE2E8;
    --success: #3A7D5C;
    --radius: 10px;
    --shadow: 0 4px 18px rgba(15, 31, 61, 0.08);
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--paper);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 {
    font-family: var(--font-display);
    color: var(--navy);
    line-height: 1.2;
    margin: 0 0 .5em;
    letter-spacing: -0.01em;
}
p { margin: 0 0 1em; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.mono { font-family: var(--font-mono); }

a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 2px;
}

/* ---------- Eyebrow / etiket ---------- */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 12.5px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--amber-dark);
    margin-bottom: 14px;
}
.eyebrow::before {
    content: '';
    width: 18px; height: 1px;
    background: var(--amber);
}

/* ---------- Header / Nav ---------- */
.site-header {
    background: var(--navy);
    position: sticky; top: 0; z-index: 50;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav-wrap {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 24px;
}
.brand {
    font-family: var(--font-display);
    font-weight: 700; font-size: 20px; color: #fff;
    display: flex; align-items: center; gap: 10px;
}
.brand-mark {
    width: 30px; height: 30px; flex-shrink: 0;
}
.brand small { display:block; font-family: var(--font-mono); font-size: 10.5px; font-weight: 400; color: #9FB0C9; letter-spacing:.06em; }
.main-nav { display: flex; gap: 26px; align-items: center; }
.main-nav a {
    color: #C7D2E3; font-size: 14.5px; font-weight: 500;
    padding: 8px 0; border-bottom: 2px solid transparent;
    transition: color .15s, border-color .15s;
}
.main-nav a:hover, .main-nav a.active { color: #fff; border-color: var(--amber); }
.nav-cta {
    background: var(--amber); color: #fff !important; padding: 10px 18px !important;
    border-radius: 6px; font-weight: 600 !important; border: none !important;
}
.nav-cta:hover { background: var(--amber-dark); }
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; }

@media (max-width: 880px) {
    .main-nav { position: fixed; top: 66px; left: 0; right: 0; background: var(--navy-light);
        flex-direction: column; align-items: flex-start; padding: 18px 24px; gap: 4px;
        display: none; border-bottom: 1px solid rgba(255,255,255,.08); }
    .main-nav.open { display: flex; }
    .main-nav a { width: 100%; padding: 12px 0; }
    .nav-toggle { display: block; }
}

/* ---------- Kompakt sayfa başlığı (iç sayfalar - kategori vb.) — index.php'deki .hero'dan bağımsız ---------- */
.hero-page {
    background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
    color: #fff; padding: 34px 0 40px;
}
.hero-page .breadcrumb { color: #94A3BC; margin-bottom: 14px; }
.hero-page .breadcrumb a { color: #B9C5D8; }
.hero-page .eyebrow { margin-bottom: 8px; }
.hero-page h1 { color: #fff; font-size: 26px; margin-bottom: .3em; max-width: 34ch; }
.hero-page p.lead { color: #B9C5D8; font-size: 15px; max-width: 56ch; margin-bottom: 0; }
.hero-page .hero-actions { margin-top: 18px; }

/* ---------- Hero ---------- */
.hero {
    background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
    color: #fff; padding: 76px 0 90px; position: relative; overflow: hidden;
}
.hero .container { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 { color: #fff; font-size: 42px; margin-bottom: .4em; }
.hero h1 span { color: var(--amber); }
.hero p.lead { color: #B9C5D8; font-size: 17.5px; max-width: 46ch; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
@media (max-width: 880px) { .hero .container { grid-template-columns: 1fr; } .hero h1 { font-size: 32px; } }

/* Modül bağlantı diyagramı (hero görseli) */
.module-diagram { width: 100%; height: auto; }
.module-diagram .node-box { fill: rgba(255,255,255,.06); stroke: rgba(199,125,51,.55); stroke-width: 1; }
.module-diagram .node-label { fill: #E7ECF5; font-family: var(--font-mono); font-size: 11px; }
.module-diagram .link { stroke: rgba(199,125,51,.4); stroke-width: 1; stroke-dasharray: 3 4; }
.module-diagram .hub { fill: var(--amber); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 13px 24px; border-radius: 6px; font-weight: 600; font-size: 15px;
    cursor: pointer; border: 1px solid transparent; transition: all .15s;
}
.btn-primary { background: var(--amber); color: #fff; }
.btn-primary:hover { background: var(--amber-dark); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.btn-outline:hover { border-color: #fff; }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-light); }
.btn-sm { padding: 8px 14px; font-size: 13.5px; }
.btn-block { width: 100%; }

/* ---------- Sections ---------- */
.section { padding: 74px 0; }
.section-tight { padding: 46px 0; }
.section-alt { background: var(--panel); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 640px; margin: 0 0 40px; }
.section-head h2 { font-size: 30px; }
.section-head p { color: var(--ink-soft); font-size: 16px; }

/* ---------- Kart grid (7 konu başlığı = modüller) ---------- */
.module-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
    counter-reset: modcount;
}
@media (max-width: 900px) { .module-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .module-grid { grid-template-columns: 1fr; } }

.module-card {
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 26px; position: relative; transition: transform .15s, box-shadow .15s, border-color .15s;
    counter-increment: modcount;
}
.module-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--amber); }
.module-card .mod-index {
    font-family: var(--font-mono); font-size: 12px; color: var(--amber-dark);
    display: block; margin-bottom: 10px;
}
.module-card h3 { font-size: 19px; margin-bottom: 8px; }
.module-card p { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 14px; }
.module-card .go { font-size: 13.5px; font-weight: 600; color: var(--navy); }
.module-card:hover .go { color: var(--amber-dark); }

/* ---------- Article / blog kartları ---------- */
.post-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .post-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 620px) { .post-grid { grid-template-columns: 1fr; } }
.post-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.post-card img { width: 100%; height: 168px; object-fit: cover; background: var(--steel); }
.post-card .body { padding: 20px; }
.post-card .cat { font-family: var(--font-mono); font-size: 11.5px; color: var(--amber-dark); text-transform: uppercase; letter-spacing: .05em; }
.post-card h3 { font-size: 17px; margin: 8px 0; }
.post-card p { color: var(--ink-soft); font-size: 14px; }
.post-card .meta { font-size: 12.5px; color: #8B95A3; margin-top: 12px; font-family: var(--font-mono); }

/* ---------- Form (lead / iletişim) ---------- */
.form-panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13.5px; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.field input, .field select, .field textarea {
    width: 100%; padding: 11px 13px; border: 1px solid var(--line); border-radius: 6px;
    font-family: var(--font-body); font-size: 14.5px; color: var(--ink); background: #fff;
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--amber); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 620px) { .form-row { grid-template-columns: 1fr; } }

.alert { padding: 14px 16px; border-radius: 6px; font-size: 14.5px; margin-bottom: 20px; }
.alert-success { background: #E4F3EC; color: var(--success); border: 1px solid #BFE3D0; }
.alert-error { background: #FBEAEA; color: #A6362D; border: 1px solid #F3C9C6; }
.alert-info { background: #EAF0F9; color: var(--steel); border: 1px solid #CBDAEE; }

/* ---------- İstatistik şeridi ---------- */
.stat-strip { display: flex; gap: 40px; flex-wrap: wrap; padding: 30px 0; border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px;}
.stat { font-family: var(--font-mono); }
.stat b { font-size: 26px; color: #fff; display: block; }
.stat span { font-size: 12.5px; color: #9FB0C9; }

/* ---------- Eğitim takvimi ---------- */
.training-list { display: flex; flex-direction: column; gap: 16px; }
.training-item {
    display: grid; grid-template-columns: 110px 1fr auto; gap: 20px; align-items: center;
    background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px;
}
@media (max-width: 700px) { .training-item { grid-template-columns: 1fr; text-align: left; } }
.training-date { font-family: var(--font-mono); text-align: center; background: var(--navy); color: #fff; border-radius: 8px; padding: 10px 6px; }
.training-date .d { font-size: 22px; font-weight: 700; display: block; }
.training-date .m { font-size: 11px; text-transform: uppercase; color: var(--amber); }
.training-item h3 { font-size: 17.5px; margin-bottom: 6px; }
.training-item .meta { font-size: 13px; color: var(--ink-soft); font-family: var(--font-mono); }
.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 11.5px; font-family: var(--font-mono); }
.badge-open { background: #E4F3EC; color: var(--success); }
.badge-closed { background: #F1F2F4; color: #8B95A3; }
.badge-planned { background: #EAF0F9; color: var(--steel); }

/* ---------- İçerik gövdesi (yazı detay) ---------- */
.article-body { font-size: 16.5px; }
.article-body h2 { font-size: 24px; margin-top: 1.6em; }
.article-body h3 { font-size: 19px; margin-top: 1.4em; }
.article-body ul, .article-body ol { padding-left: 22px; }
.article-body li { margin-bottom: .4em; }
.article-body blockquote {
    border-left: 3px solid var(--amber); margin: 1.6em 0; padding: 4px 20px; color: var(--ink-soft); font-style: italic;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 14.5px; }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.article-body th { background: var(--paper); font-family: var(--font-mono); font-size: 12.5px; text-transform: uppercase; }

/* ---------- Sidebar CTA (kategori/yazı sayfaları) ---------- */
.side-cta { background: var(--navy); color: #fff; border-radius: var(--radius); padding: 26px; }
.side-cta h3 { color: #fff; font-size: 18px; }
.side-cta p { color: #B9C5D8; font-size: 14px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: #B9C5D8; padding: 56px 0 24px; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 34px; }
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { color: #fff; font-size: 14px; text-transform: uppercase; letter-spacing: .06em; font-family: var(--font-mono); margin-bottom: 16px; }
.footer-grid a { display: block; color: #AEBBCF; font-size: 14px; margin-bottom: 10px; }
.footer-grid a:hover { color: var(--amber); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 40px; padding-top: 20px; font-size: 12.5px; color: #7E8CA3; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size: 13px; color: var(--ink-soft); margin-bottom: 18px; font-family: var(--font-mono); }
.breadcrumb a { color: var(--steel); }
.breadcrumb a:hover { color: var(--amber-dark); }

/* ---------- Sayfalama ---------- */
.pagination { display: flex; gap: 8px; margin-top: 30px; }
.pagination a, .pagination span { padding: 8px 13px; border: 1px solid var(--line); border-radius: 6px; font-size: 14px; font-family: var(--font-mono); }
.pagination a:hover { border-color: var(--amber); }
.pagination .current { background: var(--navy); color: #fff; border-color: var(--navy); }

/* ---------- Layout içerik + sidebar ---------- */
.content-layout { display: grid; grid-template-columns: 2.1fr 1fr; gap: 40px; align-items: start; }
@media (max-width: 880px) { .content-layout { grid-template-columns: 1fr; } }
.sticky { position: sticky; top: 100px; }

/* WhatsApp yüzen buton */
.wa-float {
    position: fixed; bottom: 22px; right: 22px; width: 56px; height: 56px; border-radius: 50%;
    background: #25D366; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 18px rgba(0,0,0,.25); z-index: 60;
}