:root {
    color-scheme: dark;
    --bg: #07111f;
    --panel: #0d1b2e;
    --panel-2: #10233b;
    --text: #e7eefc;
    --muted: #92a6c6;
    --line: #1d3557;
    --blue: #38bdf8;
    --blue-2: #2563eb;
    --danger: #ef4444;
    --success: #22c55e;
    --warning: #f59e0b;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    min-height: 100vh;
    background: radial-gradient(circle at top left, rgba(56, 189, 248, .16), transparent 34%), var(--bg);
    color: var(--text);
    font-family: Tahoma, Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
input, select, textarea, button { font: inherit; }
input, select, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 11px 12px;
    background: #07182b;
    color: var(--text);
}
textarea { min-height: 92px; resize: vertical; }
table { width: 100%; border-collapse: collapse; }
th, td { border-bottom: 1px solid var(--line); padding: 12px; text-align: right; vertical-align: top; }
th { color: var(--muted); font-size: 13px; }
code { color: #bae6fd; white-space: pre-wrap; }

.app-shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar { border-left: 1px solid var(--line); background: rgba(8, 18, 32, .92); padding: 24px; }
.brand { display: flex; gap: 12px; align-items: center; margin-bottom: 28px; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 10px; background: linear-gradient(135deg, var(--blue), var(--blue-2)); font-weight: 800; }
.brand small, .topbar small, .card small { display: block; color: var(--muted); margin-top: 4px; }
.nav { display: grid; gap: 8px; }
.nav a { padding: 12px; border-radius: 8px; color: var(--muted); transition: .18s ease; }
.nav a:hover { background: var(--panel-2); color: var(--text); }
.main { padding: 24px; overflow-x: auto; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.banner, .alert { display: flex; justify-content: space-between; gap: 12px; align-items: center; border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; }
.banner { background: rgba(245, 158, 11, .14); border: 1px solid rgba(245, 158, 11, .35); }
.alert.success { background: rgba(34, 197, 94, .12); border: 1px solid rgba(34, 197, 94, .32); }
.alert.danger { background: rgba(239, 68, 68, .12); border: 1px solid rgba(239, 68, 68, .32); }
.panel, .card, .auth-card {
    background: linear-gradient(180deg, rgba(16, 35, 59, .92), rgba(13, 27, 46, .92));
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, .18);
}
.panel { margin-bottom: 18px; }
.auth-card { max-width: 460px; margin: 7vh auto; }
.auth-card.wide { max-width: 760px; }
.auth-links { display: flex; justify-content: space-between; margin-top: 16px; color: var(--blue); }
.grid { display: grid; gap: 16px; }
.cards.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid { display: grid; gap: 14px; align-items: end; }
.form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.form-grid.five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
label { display: grid; gap: 7px; color: var(--muted); font-size: 14px; }
.check { display: flex; align-items: center; gap: 8px; }
.check input { width: auto; }
.btn {
    border: 0;
    border-radius: 8px;
    padding: 10px 14px;
    cursor: pointer;
    color: white;
    transition: transform .16s ease, opacity .16s ease;
}
.btn:hover { transform: translateY(-1px); opacity: .92; }
.btn-primary { background: linear-gradient(135deg, var(--blue), var(--blue-2)); }
.btn-muted { background: #233852; }
.btn-warning { background: var(--warning); color: #111827; }
.card span { color: var(--muted); }
.card strong { display: block; font-size: 28px; margin-top: 8px; }
.pill { display: inline-flex; padding: 5px 9px; border-radius: 999px; background: rgba(56, 189, 248, .12); color: #bae6fd; font-size: 12px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.conversation-list { display: grid; gap: 14px; }
.conversation header { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.messages { display: grid; gap: 8px; }
.messages p { display: flex; gap: 8px; align-items: flex-end; margin: 0; }
.messages p.outbound { justify-content: flex-start; }
.messages p.inbound { justify-content: flex-end; }
.messages span { max-width: 68%; padding: 10px 12px; border-radius: 8px; background: #0a2440; }
.messages p.outbound span { background: #123c72; }
.messages small { color: var(--muted); }
.reply-form { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-top: 12px; }
.reply-form.has-file { grid-template-columns: 1fr minmax(180px, 280px) auto; }
.suggestion { margin: 12px 0; padding: 10px; border-radius: 8px; background: rgba(34, 197, 94, .12); color: #bbf7d0; }
.empty { color: var(--muted); }
.feature-group { margin: 20px 0; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 12px 0 20px; }
.feature-grid.compact { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.feature-toggle {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: start;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(7, 24, 43, .72);
}
.feature-toggle input { width: auto; margin-top: 5px; }
.feature-toggle strong, .feature-toggle small, .feature-toggle em { display: block; }
.feature-toggle em { color: var(--muted); font-style: normal; line-height: 1.7; }
.tag-list { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0; }
.tag-list.small { margin: 0 0 10px; }
.tag { border: 1px solid var(--tag-color); color: var(--tag-color); background: color-mix(in srgb, var(--tag-color) 14%, transparent); border-radius: 999px; padding: 5px 10px; font-size: 12px; }
.meta-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 12px 0; }
.timeline { display: grid; gap: 14px; }
.timeline-item, .note {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 12px;
    background: rgba(7, 24, 43, .72);
}
.timeline-item p, .note { color: var(--muted); }
.quick-list, .conversation-tools { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.conversation-tools form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.conversation-tools select { min-width: 160px; }

.landing-page {
    background:
        radial-gradient(circle at 15% 5%, rgba(56, 189, 248, .22), transparent 30%),
        radial-gradient(circle at 80% 18%, rgba(37, 99, 235, .20), transparent 28%),
        #030712;
}
.landing-nav {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    padding: 18px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.landing-brand, .landing-links, .hero-actions, .service-row, .landing-footer { display: flex; align-items: center; gap: 14px; }
.landing-brand span {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--blue), var(--blue-2));
    font-weight: 800;
}
.landing-links a { color: var(--muted); }
.landing-cta, .landing-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    border-radius: 8px;
    padding: 0 18px;
    font-weight: 700;
}
.landing-cta { color: #fff; background: linear-gradient(135deg, var(--blue), var(--blue-2)); box-shadow: 0 16px 40px rgba(37, 99, 235, .28); }
.landing-cta.small { min-height: 38px; padding: 0 14px; }
.landing-secondary { border: 1px solid var(--line); color: var(--text); background: rgba(13, 27, 46, .62); }
.landing-hero, .landing-section, .landing-final {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}
.landing-hero {
    min-height: calc(100vh - 84px);
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    align-items: center;
    padding: 48px 0 72px;
}
.eyebrow { display: inline-flex; color: #7dd3fc; margin-bottom: 14px; font-weight: 700; }
.hero-copy h1 { font-size: clamp(40px, 6vw, 78px); line-height: 1.05; margin: 0 0 20px; letter-spacing: 0; }
.hero-copy p { color: var(--muted); font-size: 18px; line-height: 1.9; max-width: 680px; }
.hero-visual {
    position: relative;
    min-height: 420px;
    border: 1px solid rgba(56, 189, 248, .18);
    border-radius: 18px;
    background:
        linear-gradient(135deg, rgba(14, 165, 233, .14), rgba(37, 99, 235, .08)),
        rgba(13, 27, 46, .38);
    overflow: hidden;
}
.hero-visual::before {
    content: "";
    position: absolute;
    inset: 52px;
    border: 1px dashed rgba(125, 211, 252, .28);
    border-radius: 50%;
}
.orbit-card {
    position: absolute;
    background: rgba(7, 17, 31, .86);
    border: 1px solid rgba(56, 189, 248, .24);
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 24px 70px rgba(0, 0, 0, .28);
}
.main-card { inset-inline-start: 56px; top: 74px; width: 260px; }
.orbit-card strong { display: block; font-size: 34px; margin: 8px 0; }
.card-a { inset-inline-end: 42px; top: 170px; }
.card-b { inset-inline-start: 74px; bottom: 52px; }
.rocket {
    position: absolute;
    inset-inline-end: 128px;
    bottom: 82px;
    color: #7dd3fc;
    font-size: 92px;
    transform: rotate(-26deg);
    text-shadow: 0 0 36px rgba(56, 189, 248, .65);
}
.landing-section { padding: 76px 0; }
.section-heading { max-width: 760px; margin-bottom: 26px; }
.section-heading h2, .landing-final h2 { font-size: clamp(28px, 4vw, 46px); margin: 0; letter-spacing: 0; }
.landing-grid, .pricing-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.landing-card, .price-card {
    min-height: 178px;
    border: 1px solid rgba(56, 189, 248, .16);
    border-radius: 8px;
    padding: 18px;
    background: rgba(13, 27, 46, .58);
}
.landing-card small, .price-card p { color: var(--muted); }
.landing-card h3 { margin: 10px 0; }
.landing-card p, .service-row span { color: var(--muted); line-height: 1.8; }
.service-row { align-items: stretch; }
.service-row div { flex: 1; border-top: 1px solid var(--line); padding-top: 16px; display: grid; gap: 8px; }
.price-card strong { display: block; font-size: 34px; margin: 12px 0 4px; }
.landing-final {
    margin-bottom: 80px;
    padding: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(56, 189, 248, .20), rgba(37, 99, 235, .12));
    border: 1px solid rgba(125, 211, 252, .24);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}
.landing-footer {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
    justify-content: space-between;
    padding: 24px 0 38px;
    color: var(--muted);
    border-top: 1px solid rgba(56, 189, 248, .14);
}

@media (max-width: 960px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { position: static; border-left: 0; border-bottom: 1px solid var(--line); }
    .nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .cards.four, .cards.two, .form-grid.two, .form-grid.three, .form-grid.four, .form-grid.five, .feature-grid, .feature-grid.compact, .meta-grid, .landing-hero, .landing-grid, .pricing-grid { grid-template-columns: 1fr; }
    .topbar { align-items: flex-start; gap: 12px; }
    .reply-form, .reply-form.has-file { grid-template-columns: 1fr; }
    .landing-links { display: none; }
    .landing-hero { min-height: auto; padding-top: 34px; }
    .hero-visual { min-height: 360px; }
    .landing-final, .landing-footer, .service-row { flex-direction: column; align-items: stretch; }
}