/* EchoSim Web — stil sistemi. Sistem fontları, indigo aksan (#4f46e5). */

:root {
    --indigo-50:#eef2ff; --indigo-100:#e0e7ff; --indigo-500:#6366f1;
    --indigo-600:#4f46e5; --indigo-700:#4338ca;
    --ink-900:#0f172a; --ink-800:#1e293b; --ink-700:#334155;
    --ink-500:#64748b; --ink-400:#94a3b8; --ink-300:#cbd5e1;
    --ink-100:#f1f5f9; --ink-50:#f8fafc;
    --white:#ffffff;
    --green:#16a34a; --amber:#d97706; --red:#dc2626;
    --radius:14px; --radius-sm:10px;
    --shadow-sm:0 1px 3px rgba(15,23,42,.08);
    --shadow:0 10px 30px -12px rgba(15,23,42,.25);
    --maxw:1140px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
    margin:0; font-family:var(--font); color:var(--ink-800);
    background:var(--white); line-height:1.6; -webkit-font-smoothing:antialiased;
}
a { color:var(--indigo-600); text-decoration:none; }
a:hover { text-decoration:underline; }
img { max-width:100%; display:block; }
h1,h2,h3,h4 { color:var(--ink-900); line-height:1.2; margin:0 0 .5em; }
h1 { font-size:clamp(2rem,4vw,3rem); letter-spacing:-.02em; }
h2 { font-size:clamp(1.5rem,3vw,2.1rem); letter-spacing:-.01em; }
p { margin:0 0 1rem; }
.muted { color:var(--ink-500); }
.container { width:100%; max-width:var(--maxw); margin:0 auto; padding:0 20px; }
.center { text-align:center; }

/* ---- Butonlar ---- */
.btn {
    display:inline-flex; align-items:center; justify-content:center; gap:.5rem;
    padding:.7rem 1.3rem; border-radius:var(--radius-sm); font-weight:600;
    font-size:.95rem; border:1px solid transparent; cursor:pointer; transition:.15s;
    text-decoration:none; white-space:nowrap;
}
.btn:hover { text-decoration:none; transform:translateY(-1px); }
.btn-primary { background:var(--indigo-600); color:#fff; }
.btn-primary:hover { background:var(--indigo-700); color:#fff; }
.btn-ghost { background:transparent; color:var(--ink-700); border-color:transparent; }
.btn-ghost:hover { background:var(--ink-100); }
.btn-outline { background:#fff; color:var(--indigo-600); border-color:var(--indigo-100); }
.btn-outline:hover { border-color:var(--indigo-600); }
.btn-danger { background:var(--red); color:#fff; }
.btn-success { background:var(--green); color:#fff; }
.btn-sm { padding:.45rem .85rem; font-size:.85rem; }
.btn-block { display:flex; width:100%; }

/* ---- Header ---- */
.site-header { position:sticky; top:0; z-index:50; background:rgba(255,255,255,.9);
    backdrop-filter:saturate(180%) blur(10px); border-bottom:1px solid var(--ink-100); }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:66px; gap:1rem; }
.brand { display:inline-flex; align-items:center; gap:.55rem; font-size:1.25rem; color:var(--ink-900); font-weight:700; }
.brand:hover { text-decoration:none; }
.brand strong { color:var(--indigo-600); }
.site-nav { display:flex; align-items:center; gap:.4rem; }
.nav-link { padding:.5rem .75rem; border-radius:8px; color:var(--ink-700); font-weight:500; font-size:.95rem; }
.nav-link:hover { background:var(--ink-100); text-decoration:none; }
.nav-link.active { color:var(--indigo-600); }
.inline-form { display:inline; margin:0; }
.nav-toggle { display:none; flex-direction:column; gap:5px; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span { width:24px; height:2px; background:var(--ink-800); border-radius:2px; transition:.2s; }

/* ---- Hero ---- */
.hero { background:linear-gradient(160deg,#0f172a 0%,#312e81 60%,#4f46e5 120%); color:#fff; padding:5rem 0 4.5rem; position:relative; overflow:hidden; }
.hero:after { content:""; position:absolute; width:520px; height:520px; border-radius:50%;
    background:radial-gradient(circle,rgba(99,102,241,.45),transparent 60%); top:-160px; right:-120px; }
.hero .container { position:relative; z-index:1; }
.hero h1 { color:#fff; max-width:16ch; }
.hero p.lead { font-size:1.2rem; color:#c7d2fe; max-width:52ch; }
.hero-actions { display:flex; gap:.8rem; flex-wrap:wrap; margin-top:1.6rem; }
.hero .btn-outline { background:rgba(255,255,255,.06); color:#fff; border-color:rgba(255,255,255,.25); }
.hero .btn-outline:hover { background:rgba(255,255,255,.14); }
.pill { display:inline-block; background:rgba(255,255,255,.12); color:#e0e7ff; padding:.35rem .8rem; border-radius:999px; font-size:.85rem; margin-bottom:1.2rem; }

/* ---- Sections ---- */
.section { padding:4.5rem 0; }
.section-tight { padding:3rem 0; }
.section-alt { background:var(--ink-50); }
.section-head { max-width:60ch; margin:0 auto 2.6rem; text-align:center; }
.section-head p { color:var(--ink-500); font-size:1.05rem; }

/* ---- Grid & Cards ---- */
.grid { display:grid; gap:1.4rem; }
.grid-3 { grid-template-columns:repeat(3,1fr); }
.grid-2 { grid-template-columns:repeat(2,1fr); }
.grid-4 { grid-template-columns:repeat(4,1fr); }
.card { background:#fff; border:1px solid var(--ink-100); border-radius:var(--radius); padding:1.5rem; box-shadow:var(--shadow-sm); }
.card h3 { font-size:1.15rem; }
.feature-icon { width:44px; height:44px; border-radius:12px; background:var(--indigo-50); color:var(--indigo-600);
    display:flex; align-items:center; justify-content:center; font-size:1.4rem; margin-bottom:1rem; }

/* ---- Pricing ---- */
.plans { display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:1.4rem; align-items:stretch; }
.plan { display:flex; flex-direction:column; background:#fff; border:1px solid var(--ink-100); border-radius:var(--radius); padding:1.8rem; position:relative; }
.plan.featured { border-color:var(--indigo-600); box-shadow:var(--shadow); }
.plan.featured:before { content:"En Popüler"; position:absolute; top:-12px; left:50%; transform:translateX(-50%);
    background:var(--indigo-600); color:#fff; font-size:.72rem; font-weight:600; padding:.25rem .8rem; border-radius:999px; }
.plan h3 { margin-bottom:.2rem; }
.plan .price { font-size:2.1rem; font-weight:700; color:var(--ink-900); margin:.6rem 0; }
.plan .price small { font-size:.9rem; color:var(--ink-500); font-weight:500; }
.plan .tagline { color:var(--ink-500); min-height:2.6em; }
.plan ul { list-style:none; padding:0; margin:1.2rem 0; flex:1; }
.plan ul li { padding:.4rem 0 .4rem 1.6rem; position:relative; color:var(--ink-700); font-size:.95rem; }
.plan ul li:before { content:"✓"; position:absolute; left:0; color:var(--green); font-weight:700; }

/* ---- Steps ---- */
.steps { counter-reset:step; display:grid; gap:1.4rem; grid-template-columns:repeat(3,1fr); }
.step { position:relative; padding-top:1rem; }
.step .num { width:40px; height:40px; border-radius:50%; background:var(--indigo-600); color:#fff; display:flex;
    align-items:center; justify-content:center; font-weight:700; margin-bottom:.8rem; }

/* ---- Forms ---- */
.auth-wrap { max-width:440px; margin:3rem auto; }
.form-card { background:#fff; border:1px solid var(--ink-100); border-radius:var(--radius); padding:2rem; box-shadow:var(--shadow-sm); }
.form-group { margin-bottom:1.1rem; }
.form-group label { display:block; font-weight:600; font-size:.9rem; margin-bottom:.4rem; color:var(--ink-700); }
.form-control { width:100%; padding:.7rem .85rem; border:1px solid var(--ink-300); border-radius:var(--radius-sm);
    font-size:1rem; font-family:inherit; background:#fff; transition:.15s; }
.form-control:focus { outline:none; border-color:var(--indigo-600); box-shadow:0 0 0 3px var(--indigo-100); }
.form-row { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.form-check { display:flex; gap:.6rem; align-items:flex-start; font-size:.9rem; color:var(--ink-600); }
.form-check input { margin-top:.25rem; }
.form-hint { font-size:.82rem; color:var(--ink-500); margin-top:.35rem; }
.form-foot { text-align:center; margin-top:1rem; font-size:.92rem; color:var(--ink-500); }

/* ---- Flash ---- */
.flash-wrap { margin-top:1rem; display:grid; gap:.6rem; }
.flash { display:flex; justify-content:space-between; align-items:center; gap:1rem; padding:.85rem 1.1rem;
    border-radius:var(--radius-sm); font-size:.95rem; border:1px solid; }
.flash-success { background:#f0fdf4; border-color:#bbf7d0; color:#166534; }
.flash-error { background:#fef2f2; border-color:#fecaca; color:#991b1b; }
.flash-info { background:var(--indigo-50); border-color:var(--indigo-100); color:var(--indigo-700); }
.flash-close { background:none; border:0; font-size:1.3rem; line-height:1; cursor:pointer; color:inherit; opacity:.6; }
.flash-close:hover { opacity:1; }

/* ---- Account / Admin ---- */
.app-layout { display:grid; grid-template-columns:240px 1fr; gap:2rem; padding:2.4rem 0; align-items:start; }
.side-nav { background:#fff; border:1px solid var(--ink-100); border-radius:var(--radius); padding:.8rem; position:sticky; top:86px; }
.side-nav a { display:block; padding:.65rem .9rem; border-radius:8px; color:var(--ink-700); font-weight:500; font-size:.95rem; }
.side-nav a:hover { background:var(--ink-100); text-decoration:none; }
.side-nav a.active { background:var(--indigo-50); color:var(--indigo-700); }
.panel { background:#fff; border:1px solid var(--ink-100); border-radius:var(--radius); padding:1.6rem; margin-bottom:1.4rem; }
.panel h2 { font-size:1.3rem; }
.stat-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:1rem; }
.stat { background:#fff; border:1px solid var(--ink-100); border-radius:var(--radius); padding:1.3rem; }
.stat .num { font-size:2rem; font-weight:700; color:var(--indigo-600); }
.stat .lbl { color:var(--ink-500); font-size:.9rem; }

/* ---- Badges ---- */
.badge { display:inline-block; padding:.2rem .65rem; border-radius:999px; font-size:.78rem; font-weight:600; }
.badge-green { background:#dcfce7; color:#166534; }
.badge-amber { background:#fef3c7; color:#92400e; }
.badge-red { background:#fee2e2; color:#991b1b; }
.badge-gray { background:var(--ink-100); color:var(--ink-600); }

/* ---- Tables ---- */
.table-wrap { overflow-x:auto; }
table.data { width:100%; border-collapse:collapse; font-size:.92rem; }
table.data th, table.data td { padding:.75rem .85rem; text-align:left; border-bottom:1px solid var(--ink-100); }
table.data th { color:var(--ink-500); font-weight:600; font-size:.82rem; text-transform:uppercase; letter-spacing:.03em; }
table.data tr:hover td { background:var(--ink-50); }

/* ---- Legal / prose ---- */
.prose { max-width:820px; margin:0 auto; padding:3rem 0; }
.prose h1 { margin-bottom:.3rem; }
.prose .updated { color:var(--ink-500); font-size:.9rem; margin-bottom:2rem; }
.prose h2 { margin-top:2rem; font-size:1.35rem; }
.prose h3 { margin-top:1.4rem; font-size:1.1rem; }
.prose ul, .prose ol { padding-left:1.3rem; }
.prose li { margin:.35rem 0; }
.prose table { width:100%; border-collapse:collapse; margin:1rem 0; }
.prose table th, .prose table td { border:1px solid var(--ink-200,#e2e8f0); padding:.6rem; text-align:left; font-size:.92rem; }

/* ---- Bank box ---- */
.bank-box { background:var(--indigo-50); border:1px dashed var(--indigo-100); border-radius:var(--radius); padding:1.4rem; }
.bank-box .iban { font-size:1.15rem; font-weight:700; letter-spacing:.04em; color:var(--ink-900); font-family:ui-monospace,monospace; }
.ref-code { display:inline-block; background:var(--ink-900); color:#fff; padding:.3rem .7rem; border-radius:8px; font-family:ui-monospace,monospace; letter-spacing:.05em; }

/* ---- CTA band ---- */
.cta { background:linear-gradient(120deg,var(--indigo-600),var(--indigo-700)); color:#fff; border-radius:var(--radius); padding:3rem; text-align:center; }
.cta h2 { color:#fff; }
.cta .btn-primary { background:#fff; color:var(--indigo-700); }

/* ---- Footer ---- */
.site-footer { background:var(--ink-900); color:var(--ink-300); margin-top:4rem; padding:3rem 0 1.5rem; }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1.5fr; gap:2rem; }
.footer-brand .brand { color:#fff; }
.footer-brand .brand strong { color:var(--indigo-500); }
.footer-brand p { color:var(--ink-400); font-size:.92rem; margin-top:.8rem; max-width:32ch; }
.footer-col h4 { color:#fff; font-size:.95rem; margin-bottom:.9rem; }
.footer-col a { display:block; color:var(--ink-400); padding:.25rem 0; font-size:.9rem; }
.footer-col a:hover { color:#fff; }
.footer-bottom { display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; border-top:1px solid var(--ink-800); margin-top:2rem; padding-top:1.3rem; }
.footer-bottom .muted { color:var(--ink-500); font-size:.85rem; }
.footer-legal-note { font-size:.8rem; }

/* ---- Cookie banner ---- */
.cookie-banner { position:fixed; bottom:1rem; left:50%; transform:translateX(-50%); width:min(680px,92%);
    background:var(--ink-900); color:#fff; border-radius:var(--radius); padding:1rem 1.3rem; display:flex; gap:1rem;
    align-items:center; justify-content:space-between; box-shadow:var(--shadow); z-index:80; }
.cookie-banner p { margin:0; font-size:.88rem; color:var(--ink-300); }
.cookie-banner a { color:var(--indigo-500); }

/* ---- Misc ---- */
.hr { height:1px; background:var(--ink-100); border:0; margin:1.5rem 0; }
.list-plain { list-style:none; padding:0; }
.tag-row { display:flex; gap:.5rem; flex-wrap:wrap; }
.kpi { font-weight:700; color:var(--ink-900); }
.logo-note { font-size:.8rem; color:var(--ink-400); }

/* ---- Responsive ---- */
@media (max-width:920px) {
    .grid-3,.grid-4 { grid-template-columns:repeat(2,1fr); }
    .steps { grid-template-columns:1fr; }
    .footer-grid { grid-template-columns:1fr 1fr; }
    .app-layout { grid-template-columns:1fr; }
    .side-nav { position:static; display:flex; flex-wrap:wrap; gap:.3rem; }
    .side-nav a { flex:1; text-align:center; }
}
@media (max-width:680px) {
    .grid-2,.grid-3,.grid-4 { grid-template-columns:1fr; }
    .form-row { grid-template-columns:1fr; }
    .footer-grid { grid-template-columns:1fr; }
    .nav-toggle { display:flex; }
    .site-nav { position:absolute; top:66px; left:0; right:0; background:#fff; flex-direction:column;
        align-items:stretch; padding:1rem; gap:.3rem; border-bottom:1px solid var(--ink-100);
        box-shadow:var(--shadow); display:none; }
    .site-nav.open { display:flex; }
    .site-nav .btn { width:100%; }
    .footer-bottom { flex-direction:column; }
}