:root {
    --bg: #090d12;
    --surface: #111821;
    --surface-muted: #0d141c;
    --ink: #eef5ff;
    --muted: #a7b4c4;
    --line: #243241;
    --accent: #48a8d8;
    --accent-dark: #82cef3;
    --accent-soft: rgba(72, 168, 216, 0.16);
    --focus: #f0b84f;
    --section-pad: 3rem;
    --section-pad-mobile: 2.25rem;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    background: var(--bg);
    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
    line-height: 1.6;
}

a {
    color: var(--accent-dark);
    text-decoration-thickness: 0.08em;
    text-underline-offset: 0.18em;
}

a:hover {
    color: #ffffff;
}

.text-secondary {
    color: var(--muted) !important;
}

.site-nav {
    border-bottom: 1px solid var(--line);
    background: rgba(9, 13, 18, 0.94);
    backdrop-filter: blur(12px);
}

.navbar-brand {
    color: var(--ink);
    letter-spacing: 0;
}

.navbar-brand:hover {
    color: #ffffff;
}

.navbar-toggler {
    border-color: var(--line);
}

.navbar-toggler-icon {
    filter: invert(1);
}

.nav-link {
    color: var(--muted);
    font-weight: 600;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-dark);
}

.navbar-nav .nav-link.active,
.navbar-nav .nav-link.show {
    color: var(--accent-dark);
}

.hero-section {
    padding: var(--section-pad) 0;
    background: linear-gradient(180deg, #0d141c 0%, var(--bg) 100%);
}

.page-header {
    padding: var(--section-pad) 0;
    background: #0d141c;
    border-bottom: 1px solid var(--line);
}

.hero-lead {
    max-width: 54rem;
    color: var(--ink);
    font-size: clamp(1.32rem, 2vw, 1.8rem);
    line-height: 1.35;
}

.eyebrow,
.panel-label {
    color: var(--accent-dark);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.section-block {
    padding: var(--section-pad) 0;
}

.page-content {
    padding-top: var(--section-pad);
}

.section-muted {
    background: var(--surface-muted);
}

.section-heading {
    max-width: 44rem;
    margin-bottom: 2rem;
}

.section-heading-row {
    display: flex;
    gap: 1.5rem;
    align-items: end;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.section-heading-row .section-heading {
    margin-bottom: 0;
}

.section-link {
    flex: 0 0 auto;
    margin-bottom: 0.15rem;
}

.profile-panel,
.content-card,
.timeline-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.22);
}

.profile-panel {
    padding: 1.5rem;
}

.profile-panel li {
    display: flex;
    gap: 0.65rem;
    margin-bottom: 0.85rem;
    color: var(--muted);
}

.profile-panel li i {
    width: 1rem;
    margin-top: 0.25rem;
    color: var(--accent);
}

.content-card {
    position: relative;
    height: 100%;
    padding: 1.5rem;
    transition:
        transform 160ms ease,
        box-shadow 160ms ease,
        border-color 160ms ease;
}

.content-card:hover {
    border-color: rgba(72, 168, 216, 0.55);
    box-shadow: 0 20px 46px rgba(0, 0, 0, 0.32);
    transform: translateY(-2px);
}

.card-meta {
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 700;
}

.tag {
    display: inline-flex;
    align-items: center;
    min-height: 1.75rem;
    padding: 0.25rem 0.65rem;
    color: var(--accent-dark);
    background: var(--accent-soft);
    border: 1px solid rgba(72, 168, 216, 0.28);
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
}

.btn-outline-primary {
    --bs-btn-color: var(--accent-dark);
    --bs-btn-border-color: rgba(130, 206, 243, 0.72);
    --bs-btn-hover-color: #061018;
    --bs-btn-hover-bg: var(--accent-dark);
    --bs-btn-hover-border-color: var(--accent-dark);
    --bs-btn-active-color: #061018;
    --bs-btn-active-bg: var(--accent-dark);
    --bs-btn-active-border-color: var(--accent-dark);
    --bs-btn-disabled-color: var(--muted);
    --bs-btn-disabled-border-color: var(--line);
    --bs-btn-focus-shadow-rgb: 72, 168, 216;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.6rem;
    height: 2.6rem;
    color: var(--accent-dark);
    background: #0d141c;
    border: 1px solid var(--line);
    border-radius: 8px;
    text-decoration: none;
}

.social-link:hover {
    color: #061018;
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.timeline-list {
    position: relative;
    display: grid;
    gap: 1.25rem;
    max-width: 58rem;
}

.timeline-list::before {
    position: absolute;
    top: 0.5rem;
    bottom: 0.5rem;
    left: 1.15rem;
    width: 2px;
    background: var(--line);
    content: "";
}

.timeline-item {
    position: relative;
    display: grid;
    grid-template-columns: 2.4rem minmax(0, 1fr);
    gap: 1rem;
}

.timeline-marker {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    color: var(--accent-dark);
    background: #0d141c;
    border: 2px solid var(--accent);
    border-radius: 50%;
}

.timeline-card {
    padding: 1.25rem 1.35rem;
}

.timeline-date {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 0.35rem;
}

.timeline-year {
    color: var(--ink);
    font-weight: 800;
}

.timeline-month {
    color: var(--muted);
    font-weight: 700;
}

.timeline-card p {
    margin-bottom: 0;
}

.timeline-end {
    position: relative;
    display: inline-grid;
    grid-template-columns: 2.4rem auto;
    gap: 1rem;
    align-items: center;
    width: fit-content;
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 700;
}

.site-footer {
    padding: 2rem 0;
    color: var(--muted);
    border-top: 1px solid var(--line);
    background: #0d141c;
}

:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 3px;
}

@media (max-width: 767.98px) {
    .container {
        padding-right: 1.5rem;
        padding-left: 1.5rem;
    }

    .hero-section {
        padding: var(--section-pad-mobile) 0;
    }

    .page-header {
        padding: var(--section-pad-mobile) 0;
    }

    .section-block {
        padding: var(--section-pad-mobile) 0;
    }

    .page-content {
        padding-top: var(--section-pad-mobile);
    }

    .navbar-collapse {
        padding-top: 0.35rem;
    }

    .navbar-nav {
        gap: 0.15rem;
    }

    .navbar-nav .nav-link {
        padding: 0.35rem 0;
    }

    .section-heading-row {
        display: block;
    }

    .section-link {
        margin-top: 1.25rem;
    }

    .display-4 {
        font-size: 2.5rem;
    }
}