:root {
    color-scheme: dark;
    --bg: #090b10;
    --bg-soft: #10141d;
    --surface: #141a24;
    --surface-2: #192231;
    --line: #273244;
    --line-strong: #3a4860;
    --text: #f3f5f7;
    --muted: #a5afbf;
    --quiet: #747f91;
    --gold: #d4b15f;
    --teal: #4fd1c5;
    --blue: #7aa7ff;
    --green: #76d39b;
    --red: #ff8a8a;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(79, 209, 197, 0.08), transparent 34rem),
        linear-gradient(135deg, #090b10 0%, #10131b 46%, #0b1016 100%);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: 0;
}

a {
    color: inherit;
}

button,
input,
select,
textarea {
    font: inherit;
}

.app-shell {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 28px 22px;
    background: rgba(9, 11, 16, 0.88);
    border-right: 1px solid var(--line);
    backdrop-filter: blur(18px);
}

.brand {
    display: block;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
    text-decoration: none;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 40px;
    height: 40px;
    margin-bottom: 14px;
    border: 1px solid rgba(212, 177, 95, 0.5);
    border-radius: var(--radius);
    color: var(--gold);
    font-weight: 800;
}

.brand-name {
    display: block;
    color: var(--gold);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.16rem;
}

.brand-line {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.78rem;
    letter-spacing: 0.08rem;
    text-transform: uppercase;
}

.nav-links {
    display: grid;
    gap: 8px;
    margin: 28px 0 0;
    padding: 0;
    list-style: none;
}

.nav-item a {
    display: grid;
    grid-template-columns: 28px 1fr;
    align-items: center;
    min-height: 46px;
    padding: 9px 12px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--muted);
    text-decoration: none;
}

.nav-item a:hover,
.nav-item.active a {
    background: rgba(25, 34, 49, 0.72);
    border-color: var(--line);
    color: var(--text);
}

.nav-icon {
    display: grid;
    place-items: center;
    width: 22px;
    height: 22px;
    border-radius: 6px;
    background: rgba(212, 177, 95, 0.12);
    color: var(--gold);
    font-size: 0.72rem;
    font-weight: 800;
}

.sidebar-note {
    position: absolute;
    right: 22px;
    bottom: 24px;
    left: 22px;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(20, 26, 36, 0.58);
    color: var(--muted);
    font-size: 0.84rem;
    line-height: 1.45;
}

.workspace {
    width: 100%;
    max-width: 1240px;
    padding: 48px clamp(22px, 6vw, 76px) 76px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 34px;
}

.crumb {
    color: var(--gold);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
}

.status-pill,
.badge,
.mode-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 28px;
    padding: 5px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(20, 26, 36, 0.72);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    white-space: nowrap;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 0 4px rgba(118, 211, 155, 0.12);
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    gap: 28px;
    align-items: stretch;
    margin-bottom: 42px;
}

.hero-copy {
    padding: 10px 0;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 11ch;
    margin-bottom: 18px;
    font-size: clamp(3rem, 8vw, 6.4rem);
    line-height: 0.95;
    letter-spacing: 0;
}

.page-title {
    max-width: 760px;
    font-size: clamp(2.3rem, 6vw, 4.8rem);
}

.lead {
    max-width: 760px;
    color: var(--muted);
    font-size: clamp(1.05rem, 2vw, 1.3rem);
    line-height: 1.6;
}

.cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 26px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 15px;
    border: 1px solid var(--line-strong);
    border-radius: var(--radius);
    background: var(--surface-2);
    color: var(--text);
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
}

.button.primary {
    border-color: rgba(212, 177, 95, 0.72);
    background: var(--gold);
    color: #15120a;
}

.button:focus-visible,
.field:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 2px;
}

.panel,
.module-card,
.metric-card,
.rule-block,
.pricing-card {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(20, 26, 36, 0.82);
    box-shadow: var(--shadow);
}

.panel {
    padding: 22px;
}

.os-preview {
    display: grid;
    gap: 16px;
    align-content: start;
    min-height: 520px;
}

.window-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}

.window-title {
    font-weight: 800;
}

.mode-switcher {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.mode-button {
    min-height: 40px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(9, 11, 16, 0.55);
    color: var(--muted);
    font-weight: 800;
    cursor: pointer;
}

.mode-button.active {
    border-color: rgba(212, 177, 95, 0.78);
    background: rgba(212, 177, 95, 0.15);
    color: var(--gold);
}

.module-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.module-card {
    padding: 16px;
}

.module-card h3,
.metric-card h3,
.pricing-card h3 {
    margin-bottom: 8px;
    color: var(--text);
    font-size: 1rem;
}

.module-card p,
.metric-card p,
.rule-block p,
.pricing-card p {
    margin-bottom: 0;
    color: var(--muted);
    line-height: 1.55;
}

.module-card[hidden] {
    display: none;
}

.builder {
    display: grid;
    gap: 12px;
}

.field,
textarea,
select {
    width: 100%;
    min-height: 42px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(9, 11, 16, 0.64);
    color: var(--text);
    padding: 10px 12px;
}

textarea {
    min-height: 98px;
    resize: vertical;
}

label {
    display: grid;
    gap: 7px;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 700;
}

.output {
    min-height: 128px;
    padding: 16px;
    border: 1px dashed var(--line-strong);
    border-radius: var(--radius);
    background: rgba(9, 11, 16, 0.48);
    color: var(--muted);
    line-height: 1.55;
}

.output strong {
    color: var(--text);
}

.section {
    margin-top: 46px;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 18px;
}

h2 {
    margin-bottom: 0;
    font-size: clamp(1.6rem, 3vw, 2.35rem);
    letter-spacing: 0;
}

.section-kicker {
    color: var(--gold);
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
}

.grid-3,
.grid-2,
.pricing-grid,
.metric-grid {
    display: grid;
    gap: 16px;
}

.grid-3,
.pricing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-2,
.metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.metric-card,
.pricing-card,
.rule-block {
    padding: 22px;
}

.metric-large,
.price {
    margin: 10px 0;
    color: var(--gold);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    line-height: 1;
}

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(20, 26, 36, 0.72);
}

table {
    width: 100%;
    min-width: 760px;
    border-collapse: collapse;
}

th,
td {
    padding: 15px 16px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--gold);
    font-size: 0.78rem;
    letter-spacing: 0.08rem;
    text-transform: uppercase;
}

td {
    color: var(--muted);
}

tr:last-child td {
    border-bottom: 0;
}

.badge.live {
    border-color: rgba(118, 211, 155, 0.4);
    color: var(--green);
}

.badge.build {
    border-color: rgba(122, 167, 255, 0.45);
    color: var(--blue);
}

.timeline {
    display: grid;
    gap: 12px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 16px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(20, 26, 36, 0.62);
}

.timeline-phase {
    color: var(--gold);
    font-weight: 900;
}

.list {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
    line-height: 1.65;
}

.split {
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 18px;
}

.saved-list {
    display: grid;
    gap: 10px;
    margin-top: 12px;
}

.saved-item {
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(9, 11, 16, 0.48);
    color: var(--muted);
    line-height: 1.45;
}

@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: relative;
        height: auto;
        padding: 18px;
    }

    .brand {
        padding-bottom: 16px;
    }

    .nav-links {
        grid-template-columns: repeat(5, minmax(130px, 1fr));
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .sidebar-note {
        position: static;
        margin-top: 16px;
    }

    .workspace {
        padding-top: 28px;
    }

    .hero,
    .split,
    .grid-3,
    .grid-2,
    .pricing-grid,
    .metric-grid {
        grid-template-columns: 1fr;
    }

    .os-preview {
        min-height: 0;
    }
}

@media (max-width: 620px) {
    .topbar,
    .section-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .mode-switcher,
    .module-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }
}