:root {
    --bg: #010409;
    --fg: #f5f6fb;
    --muted: #b6c1d9;
    --surface: #0c1624;
    --surface-2: #111c2e;
    --accent: #7cf6b5;
    --accent-2: #96b5ff;
    --border: rgba(255, 255, 255, 0.08);
    --shadow: 0 40px 80px rgba(0, 0, 0, 0.45);
    font-family: "Space Grotesk", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: radial-gradient(circle at 20% -10%, rgba(124, 246, 181, 0.15), transparent 55%), var(--bg);
    color: var(--fg);
    font-family: inherit;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    display: block;
}

.site-shell {
    min-height: 100vh;
}

.hero {
    padding: 2.5rem clamp(1.5rem, 6vw, 5.5rem);
    padding-bottom: 4rem;
    background: linear-gradient(135deg, rgba(17, 28, 46, 0.95), rgba(7, 12, 21, 0.95));
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 10% auto auto 55%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(150, 181, 255, 0.35), transparent 70%);
    filter: blur(50px);
    pointer-events: none;
    z-index: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 2;
    transition: background 0.3s ease, border-color 0.3s ease, padding 0.3s ease;
}

.nav.scrolled {
    background: rgba(4, 8, 15, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    padding: 0.85rem 1.25rem;
    backdrop-filter: blur(18px);
}

.logo-mark {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.35rem 0.5rem 0.35rem 0;
}

.logo-mark span {
    font-weight: 600;
    display: block;
}

.logo-mark small {
    display: block;
    color: var(--muted);
    font-size: 0.8rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1rem;
    margin: 0;
    padding: 0;
}

.nav-links a {
    font-size: 0.95rem;
    color: var(--muted);
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    background: rgba(255, 255, 255, 0.08);
    color: var(--fg);
}

.nav-cta {
    margin-left: auto;
    display: flex;
    gap: 0.75rem;
}

.menu-toggle {
    display: none;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--fg);
    border-radius: 999px;
    padding: 0.35rem 0.85rem;
}

.pill {
    display: inline-flex;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(124, 246, 181, 0.08);
    border: 1px solid rgba(124, 246, 181, 0.4);
}

.pill.light {
    color: var(--accent-2);
    border-color: rgba(150, 181, 255, 0.4);
    background: rgba(150, 181, 255, 0.1);
}

.solid,
.ghost,
.outline {
    border-radius: 999px;
    padding: 0.65rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.solid {
    background: linear-gradient(120deg, var(--accent), #65d8ff);
    color: #04111d;
}

.ghost {
    background: rgba(255, 255, 255, 0.08);
    color: var(--fg);
}

.outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--fg);
}

.solid:hover,
.ghost:hover,
.outline:hover {
    transform: translateY(-1px);
    opacity: 0.9;
}

.hero-grid {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 2.5rem;
    position: relative;
    z-index: 1;
}

.hero-copy h1 {
    font-size: clamp(2.4rem, 4vw, 3.6rem);
    margin-top: 1rem;
    margin-bottom: 1rem;
    line-height: 1.15;
}

.lede {
    color: var(--muted);
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 2rem 0;
}

.hero-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.hero-list li {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.hero-list span {
    color: var(--muted);
    font-size: 0.85rem;
}

.hero-list strong {
    display: block;
    font-size: 1rem;
    margin-top: 0.35rem;
}

.hero-panel {
    background: rgba(12, 22, 36, 0.95);
    border-radius: 2rem;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow);
}

.panel-preview {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.panel-preview img {
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: #05080f;
}

.panel-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--accent-2);
    font-weight: 600;
}

.panel-link svg {
    width: 1.4rem;
    height: 1.4rem;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.6;
}

main {
    background: var(--bg);
    padding: 4rem clamp(1.5rem, 6vw, 5.5rem);
}

.section {
    margin-bottom: 4.5rem;
}

.section-header {
    max-width: 720px;
}

.section-header h2 {
    font-size: clamp(2rem, 3vw, 2.8rem);
    margin: 0.75rem 0;
}

.section-header p {
    color: var(--muted);
}

.about-grid,
.cards-grid,
.contact-grid,
.timeline,
.app-cta {
    margin-top: 2.5rem;
}

.about-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.about-card {
    background: var(--surface);
    border-radius: 1.5rem;
    padding: 1.75rem;
    border: 1px solid var(--border);
}

.about-card dl {
    margin: 0;
}

.about-card dl div {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.about-card dl div:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.about-card ol {
    list-style: none;
    padding: 0;
    margin: 0;
}

.about-card ol li {
    padding: 0.35rem 0;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
}

.about-card ol li:last-child {
    border-bottom: none;
}

.about-card span {
    color: var(--accent);
    font-weight: 600;
}

.cards-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
    background: var(--surface-2);
    padding: 1.75rem;
    border-radius: 1.5rem;
    border: 1px solid var(--border);
}

.card ul {
    list-style: none;
    padding: 0;
    margin: 1.25rem 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    color: var(--muted);
}

.timeline {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.timeline article {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.mono {
    font-family: "Space Grotesk", "Noto Sans Mono", monospace;
    letter-spacing: 0.02em;
}

.credential-actions {
    margin-top: 2rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.app-cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
    align-items: center;
}

.app-cta > div {
    background: var(--surface);
    border-radius: 1.5rem;
    padding: 2rem;
    border: 1px solid var(--border);
}

.app-details {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.app-details span {
    color: var(--muted);
    font-size: 0.85rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

.contact-grid article {
    background: rgba(255, 255, 255, 0.03);
    padding: 1.5rem;
    border-radius: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.site-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.5rem clamp(1.5rem, 6vw, 5.5rem);
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    background: #05080f;
    color: var(--muted);
}

.site-footer a {
    color: var(--accent-2);
    margin-left: 1rem;
}

body.nav-open .nav-links,
body.nav-open .nav-cta {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

@media (max-width: 960px) {
    .nav {
        flex-wrap: wrap;
        align-items: flex-start;
    }

    .nav-cta {
        order: 3;
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        width: 100%;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        margin-top: 1rem;
        padding-top: 1rem;
        transform: translateY(-10px);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }

    .nav-cta {
        flex-direction: column;
        align-items: stretch;
        transform: translateY(-10px);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .hero-grid {
        grid-template-columns: 1fr;
    }

    .panel-preview {
        grid-template-columns: 1fr;
    }

    .app-cta {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .hero,
    main {
        padding: 2rem 1.25rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
}