@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
    --bg: #000000;
    --card-bg: #1C1C1E;
    --card-border: #2C2C2E;
    --text: #FFFFFF;
    --text-secondary: #8E8E93;
    --accent: #4D9FFF;
    --accent-text: #FFFFFF;
    --success: #30D158;
    --warning: #FF9F0A;
    --danger: #FF453A;
    --radius-card: 20px;
    --radius-btn: 12px;
    --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: var(--font); -webkit-font-smoothing: antialiased; }

h1, h2, h3 { margin: 0 0 10px; font-weight: 800; letter-spacing: -0.02em; }
.page-title, h1 { font-size: 34px; font-weight: 700; letter-spacing: -0.5px; }
p { margin: 0 0 12px; color: var(--text-secondary); line-height: 1.55; }
a { color: var(--accent); text-decoration: none; }
.muted { color: var(--text-secondary); font-size: 0.9rem; }
code { font-family: ui-monospace, monospace; }

.card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-card); padding: 24px; }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font-family: var(--font); font-weight: 700; font-size: 0.95rem;
    border-radius: var(--radius-btn); padding: 12px 22px; border: 1px solid transparent;
    cursor: pointer; text-decoration: none; background: var(--card-bg); color: var(--text);
    transition: transform 0.12s ease, filter 0.15s ease;
}
.btn:active { transform: scale(0.96); }
.btn-primary { background: var(--accent); color: var(--accent-text); }
.btn-primary:hover { filter: brightness(1.1); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-block { width: 100%; }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: var(--radius-btn); }

input[type="text"], input[type="email"], input[type="url"], select, textarea {
    width: 100%; font-family: var(--font); font-size: 1rem; color: var(--text);
    background: #000; border: 1px solid var(--card-border); border-radius: var(--radius-btn);
    padding: 12px 14px; transition: border-color 0.15s ease;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); margin: 14px 0 6px; }
.checkbox-row { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: var(--text); font-weight: 500; margin: 14px 0; }
.checkbox-row input { width: auto; margin-top: 3px; }
.radio-row { display: flex; gap: 20px; margin: 8px 0; }
.radio-row label { display: flex; align-items: center; gap: 6px; color: var(--text); font-weight: 500; margin: 0; }
.radio-row input { width: auto; }

.form-error { background: rgba(255, 69, 58, 0.12); border: 1px solid rgba(255, 69, 58, 0.35); color: #ffb4af; border-radius: var(--radius-btn); padding: 12px 14px; font-size: 0.88rem; margin-bottom: 16px; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.7rem; font-weight: 800; }
.badge-dev { background: var(--accent); color: #fff; }
.badge-green { background: rgba(48,209,88,0.15); color: var(--success); }
.badge-yellow { background: rgba(255,159,10,0.15); color: var(--warning); }
.badge-red { background: rgba(255,69,58,0.15); color: var(--danger); }

.site-nav { display: flex; align-items: center; justify-content: space-between; padding: 20px 32px; max-width: 1100px; margin: 0 auto; }
.site-nav .brand { font-weight: 800; font-size: 1.2rem; letter-spacing: -0.02em; color: var(--text); }
.site-nav .brand span { color: var(--accent); }
.site-nav nav { display: flex; align-items: center; gap: 20px; }
.site-nav nav a:not(.btn) { color: var(--text-secondary); font-weight: 600; font-size: 0.92rem; }

.page { max-width: 720px; margin: 0 auto; padding: 24px 24px 64px; }
.page-center { min-height: 70vh; display: flex; align-items: center; justify-content: center; }
.page-wide { max-width: 1100px; margin: 0 auto; padding: 24px 24px 64px; }

.site-footer { display: flex; justify-content: space-between; max-width: 1100px; margin: 0 auto; padding: 24px 32px; border-top: 1px solid var(--card-border); color: var(--text-secondary); font-size: 0.85rem; }

.hero { text-align: center; padding: 64px 24px 40px; max-width: 720px; margin: 0 auto; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; max-width: 1000px; margin: 0 auto 64px; padding: 0 24px; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--card-border); font-size: 0.9rem; }
th { color: var(--text-secondary); font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; }

.settings-list { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-card); overflow: hidden; }
.settings-row { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--card-border); }
.settings-row:last-child { border-bottom: none; }

.toggle { position: relative; display: inline-block; width: 46px; height: 26px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; inset: 0; background: var(--card-border); border-radius: 999px; transition: 0.15s; cursor: pointer; }
.toggle-slider::before { content: ""; position: absolute; width: 20px; height: 20px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: 0.15s; }
.toggle input:checked + .toggle-slider { background: var(--accent); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); }

@media (max-width: 640px) {
    .site-nav { flex-direction: column; gap: 12px; padding: 16px; }
    .site-footer { flex-direction: column; gap: 8px; text-align: center; }
}