/* =========================================================
   Site Yönetimi — tanıtım sitesi stilleri
   ========================================================= */

:root {
    --primary: #0d9488;
    --primary-dark: #0f766e;
    --primary-soft: #ccfbf1;
    --ink: #0f172a;
    --body: #334155;
    --muted: #64748b;
    --bg: #ffffff;
    --surface: #f8fafc;
    --border: #e2e8f0;
    --amber: #f59e0b;
    --radius: 16px;
    --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 12px 32px -12px rgba(15, 23, 42, .12);
    --max: 1140px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --ink: #f1f5f9;
        --body: #cbd5e1;
        --muted: #94a3b8;
        --bg: #0b1220;
        --surface: #111a2b;
        --border: #1e293b;
        --primary-soft: #134e4a;
        --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px -12px rgba(0, 0, 0, .6);
    }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--body);
    background: var(--bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    color: var(--ink);
    line-height: 1.2;
    margin: 0 0 .5em;
    letter-spacing: -.02em;
}

h1 { font-size: clamp(2rem, 5vw, 3.4rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 650; }

p { margin: 0 0 1rem; }

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

.wrap {
    max-width: var(--max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- Üst menü ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 68px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 750;
    color: var(--ink);
    font-size: 1.05rem;
}
.logo:hover { text-decoration: none; }

.logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: grid;
    place-items: center;
    color: #fff;
    font-size: 18px;
}

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
}
.nav-links a {
    color: var(--body);
    font-size: .94rem;
    font-weight: 500;
}
.nav-links a:hover { color: var(--primary); text-decoration: none; }

@media (max-width: 820px) {
    .nav-links { display: none; }
}

/* ---------- Butonlar ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 13px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: .97rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
    font-family: inherit;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 20px -8px color-mix(in srgb, var(--primary) 70%, transparent);
}
.btn-primary:hover { background: var(--primary-dark); }

.btn-ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

.btn-lg { padding: 16px 30px; font-size: 1.03rem; }

/* ---------- Hero ---------- */
.hero {
    padding: 84px 0 72px;
    background:
        radial-gradient(900px 380px at 12% -8%, color-mix(in srgb, var(--primary) 13%, transparent), transparent),
        radial-gradient(700px 340px at 95% 8%, color-mix(in srgb, var(--amber) 9%, transparent), transparent);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.08fr .92fr;
    gap: 56px;
    align-items: center;
}

@media (max-width: 900px) {
    .hero { padding: 52px 0 48px; }
    .hero-grid { grid-template-columns: 1fr; gap: 44px; }
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-soft);
    color: var(--primary-dark);
    padding: 7px 14px;
    border-radius: 999px;
    font-size: .84rem;
    font-weight: 650;
    margin-bottom: 22px;
}
@media (prefers-color-scheme: dark) {
    .eyebrow { color: #5eead4; }
}

.hero p.lead {
    font-size: 1.16rem;
    max-width: 54ch;
    margin-bottom: 30px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.hero-note {
    font-size: .9rem;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ---------- Telefon maketi ---------- */
.phone {
    width: 300px;
    max-width: 100%;
    margin: 0 auto;
    border-radius: 38px;
    border: 11px solid #0f172a;
    background: #0f172a;
    box-shadow: 0 34px 70px -24px rgba(15, 23, 42, .5);
    overflow: hidden;
    position: relative;
}
.phone::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 108px;
    height: 22px;
    background: #0f172a;
    border-radius: 0 0 14px 14px;
    z-index: 3;
}

.phone-screen {
    background: var(--surface);
    height: 580px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ps-top {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    padding: 34px 18px 16px;
}
.ps-top strong { display: block; font-size: 1.02rem; }
.ps-top span { font-size: .78rem; opacity: .82; }

.ps-pin {
    margin: 10px 16px 0;
    background: color-mix(in srgb, var(--primary) 12%, var(--bg));
    border-left: 3px solid var(--primary);
    border-radius: 8px;
    padding: 9px 12px;
    font-size: .76rem;
}
.ps-pin b { display: block; color: var(--primary-dark); font-size: .7rem; }
@media (prefers-color-scheme: dark) { .ps-pin b { color: #5eead4; } }

.ps-body { padding: 12px 16px; display: flex; flex-direction: column; gap: 9px; overflow: hidden; }

.bubble {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 9px 12px;
    font-size: .78rem;
    box-shadow: 0 1px 2px rgba(15, 23, 42, .04);
}
.bubble .who {
    font-size: .68rem;
    font-weight: 700;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: 5px;
    margin-bottom: 2px;
}
@media (prefers-color-scheme: dark) { .bubble .who { color: #5eead4; } }

.badge-admin {
    background: var(--amber);
    color: #442c00;
    font-size: .58rem;
    padding: 1px 6px;
    border-radius: 999px;
    font-weight: 800;
    letter-spacing: .02em;
}

.bubble.mine { background: var(--primary-soft); border-color: transparent; align-self: flex-end; }
@media (prefers-color-scheme: dark) { .bubble.mine { background: #134e4a; } }

.ps-card {
    margin: 6px 16px 0;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    font-size: .76rem;
}
.ps-card .row { display: flex; justify-content: space-between; margin-bottom: 4px; }
.ps-card .row:last-child { margin-bottom: 0; }
.ps-card .amount { font-weight: 750; color: var(--ink); }
.ps-card .debt { color: #dc2626; font-weight: 700; }

/* ---------- Bölümler ---------- */
section { padding: 80px 0; }
section.alt { background: var(--surface); }

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 52px;
}
.section-head p { color: var(--muted); font-size: 1.05rem; margin: 0; }

/* ---------- Özellik kartları ---------- */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
}

.card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    box-shadow: var(--shadow);
    transition: transform .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }

.card .icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    background: var(--primary-soft);
    display: grid;
    place-items: center;
    font-size: 22px;
    margin-bottom: 16px;
}

.card p { margin: 0; font-size: .96rem; }

/* ---------- Adımlar ---------- */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
    counter-reset: step;
}
.step { position: relative; padding-top: 8px; }
.step-num {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 750;
    margin-bottom: 14px;
}
.step p { margin: 0; font-size: .96rem; }

/* ---------- SSS ---------- */
.faq { max-width: 780px; margin: 0 auto; }
details {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 20px;
    margin-bottom: 12px;
    background: var(--bg);
}
details[open] { border-color: color-mix(in srgb, var(--primary) 45%, var(--border)); }
summary {
    cursor: pointer;
    font-weight: 650;
    color: var(--ink);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--primary); font-size: 1.4rem; font-weight: 400; }
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; font-size: .95rem; }

/* ---------- Form ---------- */
.form-card {
    max-width: 560px;
    margin: 0 auto;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
}

.field { margin-bottom: 16px; }
.field label {
    display: block;
    font-size: .88rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 6px;
}
.field input, .field textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-family: inherit;
    font-size: .96rem;
    background: var(--surface);
    color: var(--ink);
    transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus, .field textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}
.field textarea { resize: vertical; min-height: 110px; }

/* Bot tuzağı — insanlara görünmez */
.hp { position: absolute; left: -9999px; opacity: 0; }

.alert {
    padding: 13px 16px;
    border-radius: 10px;
    font-size: .92rem;
    margin-bottom: 20px;
}
.alert-ok { background: var(--primary-soft); color: var(--primary-dark); }
.alert-err { background: #fee2e2; color: #991b1b; }
@media (prefers-color-scheme: dark) {
    .alert-ok { color: #5eead4; }
    .alert-err { background: #450a0a; color: #fca5a5; }
}

/* ---------- Footer ---------- */
footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 48px 0 32px;
    font-size: .92rem;
}
.foot-grid {
    display: flex;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; }
.foot-links a { color: var(--muted); }
.foot-bottom {
    border-top: 1px solid var(--border);
    padding-top: 22px;
    color: var(--muted);
    font-size: .87rem;
}

/* ---------- İçerik sayfaları (gizlilik vb.) ---------- */
.doc {
    max-width: 780px;
    margin: 0 auto;
    padding: 56px 20px 72px;
}
.doc h2 { margin-top: 40px; font-size: 1.35rem; }
.doc ul { padding-left: 22px; }
.doc li { margin-bottom: 8px; }
.doc .updated { color: var(--muted); font-size: .9rem; }