:root {
    color-scheme: dark;
    --page-bg: #080a0f;
    --surface: #10141d;
    --surface-strong: #151b26;
    --surface-soft: #0d1118;
    --line: rgba(148, 163, 184, 0.18);
    --line-strong: rgba(148, 163, 184, 0.34);
    --text: #f5f7fb;
    --muted: #a9b3c2;
    --muted-strong: #c7d0dc;
    --accent: #51d6c7;
    --accent-strong: #2fb6d4;
    --amber: #f5b85b;
    --green: #76d184;
    --blue: #8db7ff;
    --nav-bg: rgba(8, 10, 15, 0.86);
    --hero-gradient: linear-gradient(135deg, rgba(21, 27, 38, 0.96), rgba(8, 10, 15, 0.92));
    --hero-overlay: linear-gradient(90deg, rgba(8, 10, 15, 0.98) 0%, rgba(8, 10, 15, 0.82) 58%, rgba(8, 10, 15, 0.5) 100%);
    --focus-bg: rgba(16, 20, 29, 0.68);
    --card-bg: linear-gradient(180deg, rgba(21, 27, 38, 0.95), rgba(13, 17, 24, 0.98));
    --card-hover-bg: linear-gradient(180deg, rgba(24, 31, 43, 0.98), rgba(13, 17, 24, 0.98));
    --footer-bg: rgba(8, 10, 15, 0.75);
    --soft-shadow: 0 22px 60px rgba(0, 0, 0, 0.18);
    --main-glow: rgba(255, 255, 255, 0.015);
    --accent-rgb: 81, 214, 199;
    --button-text: #061014;
}

:root[data-theme="light"] {
    color-scheme: light;
    --page-bg: #f5f7fb;
    --surface: #ffffff;
    --surface-strong: #eef3f8;
    --surface-soft: #f8fafc;
    --line: rgba(30, 41, 59, 0.14);
    --line-strong: rgba(30, 41, 59, 0.24);
    --text: #121826;
    --muted: #617085;
    --muted-strong: #334155;
    --accent: #087d74;
    --accent-strong: #0f5d8a;
    --amber: #a76706;
    --green: #247b3e;
    --blue: #315fba;
    --nav-bg: rgba(255, 255, 255, 0.88);
    --hero-gradient: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(237, 242, 247, 0.92));
    --hero-overlay: linear-gradient(90deg, rgba(245, 247, 251, 0.98) 0%, rgba(245, 247, 251, 0.9) 58%, rgba(245, 247, 251, 0.72) 100%);
    --focus-bg: rgba(255, 255, 255, 0.72);
    --card-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
    --card-hover-bg: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(239, 246, 255, 0.92));
    --footer-bg: rgba(255, 255, 255, 0.78);
    --soft-shadow: 0 22px 60px rgba(30, 41, 59, 0.12);
    --main-glow: rgba(8, 125, 116, 0.045);
    --accent-rgb: 8, 125, 116;
    --button-text: #ffffff;
}

:root[data-theme="light"] .shadow {
    box-shadow: 0 .75rem 1.75rem rgba(30, 41, 59, 0.14) !important;
}

html {
    scroll-behavior: smooth;
}

body {
    background:
        linear-gradient(180deg, rgba(81, 214, 199, 0.06), transparent 340px),
        var(--page-bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: var(--accent);
}

a:hover {
    color: var(--accent-strong);
}

.site-nav {
    background: var(--nav-bg) !important;
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(14px);
}

.navbar-dark .navbar-brand {
    color: var(--text);
}

.navbar-brand {
    letter-spacing: 0;
    min-width: 0;
}

.brand-mark {
    display: inline-grid;
    width: 2rem;
    height: 2rem;
    margin-right: .5rem;
    place-items: center;
    border: 1px solid rgba(var(--accent-rgb), 0.45);
    border-radius: .55rem;
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
    font-size: .78rem;
}

.nav-link {
    color: var(--muted) !important;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text) !important;
}

.navbar .nav-link.active {
    background: rgba(var(--accent-rgb), 0.1);
    border-radius: 999px;
}

.lang-switcher {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: .15rem;
    background: rgba(var(--accent-rgb), 0.06);
}

.lang-switcher .nav-link {
    min-width: 2.2rem;
    text-align: center;
    border-radius: 999px;
    font-size: .78rem;
}

.navbar-header-actions {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-left: auto;
}

.navbar-toggler {
    border-color: var(--line-strong);
    border-radius: .7rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 .18rem rgba(var(--accent-rgb), 0.22);
}

:root[data-theme="light"] .navbar-toggler-icon {
    filter: invert(1) grayscale(1);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    min-height: 2.25rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: .25rem .75rem;
    color: var(--text);
    background: rgba(var(--accent-rgb), 0.06);
    font-size: .86rem;
    font-weight: 650;
}

.theme-toggle:hover {
    border-color: rgba(var(--accent-rgb), 0.42);
    color: var(--accent);
}

.theme-toggle-icon {
    display: inline-grid;
    width: 1.1rem;
    height: 1.1rem;
    place-items: center;
    line-height: 1;
    text-align: center;
}

.hero {
    position: relative;
    overflow: hidden;
    padding: clamp(4rem, 7vw, 7rem) 0 clamp(3rem, 6vw, 5rem);
    border-bottom: 1px solid var(--line);
    background:
        var(--hero-gradient),
        url("/static/images/profile.jpg") center right / min(42vw, 560px) auto no-repeat;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--hero-overlay);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.eyebrow {
    color: var(--accent);
    font-size: .78rem;
    font-weight: 700;
    text-transform: uppercase;
}

.hero-title {
    max-width: 820px;
    font-size: clamp(2.35rem, 6vw, 5.25rem);
    font-weight: 760;
    line-height: .98;
    letter-spacing: 0;
}

.hero-subtitle {
    max-width: 690px;
    color: var(--muted-strong);
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
}

.hero-focus {
    display: grid;
    gap: .65rem;
    max-width: 350px;
    margin-left: auto;
}

.focus-item {
    border: 1px solid var(--line);
    border-radius: .75rem;
    padding: .8rem 1rem;
    background: var(--focus-bg);
}

.focus-label {
    display: block;
    color: var(--muted);
    font-size: .75rem;
    text-transform: uppercase;
}

.focus-value {
    color: var(--text);
    font-weight: 650;
}

.btn {
    border-radius: .7rem;
    font-weight: 650;
}

.btn-accent {
    color: var(--button-text);
    background: var(--accent);
    border-color: var(--accent);
}

.btn-accent:hover {
    color: var(--button-text);
    background: var(--accent-strong);
    border-color: var(--accent-strong);
}

.btn-outline-light {
    color: var(--text);
    border-color: var(--line-strong);
}

.btn-outline-light:hover {
    color: var(--page-bg);
    background: var(--text);
    border-color: var(--text);
}

.btn-outline-info {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.48);
}

.btn-outline-info:hover {
    color: var(--button-text);
    background: var(--accent);
    border-color: var(--accent);
}

main {
    background: linear-gradient(180deg, var(--main-glow), transparent 220px);
}

.section-kicker {
    color: var(--accent);
    font-size: .78rem;
    font-weight: 700;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(1.65rem, 3vw, 2.3rem);
    font-weight: 740;
    letter-spacing: 0;
}

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

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

.border-secondary {
    border-color: var(--line-strong) !important;
}

.metric-card,
.project-card,
.profile-panel,
.skill-group {
    background: var(--card-bg);
    border: 1px solid var(--line);
    border-radius: .75rem;
    box-shadow: var(--soft-shadow);
}

.metric-card {
    min-height: 9rem;
    padding: 1.35rem;
}

.metric-value {
    color: var(--text);
    font-size: 2rem;
    font-weight: 760;
}

.metric-label {
    color: var(--muted);
}

.project-card {
    transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: rgba(var(--accent-rgb), 0.42);
    background: var(--card-hover-bg);
}

.project-date {
    white-space: nowrap;
}

.badge-tech {
    border: 1px solid rgba(var(--accent-rgb), 0.34);
    color: var(--accent);
    background: rgba(var(--accent-rgb), 0.09);
    margin-right: .25rem;
    margin-bottom: .35rem;
    font-weight: 560;
}

.profile-photo {
    width: 212px;
    height: 212px;
    object-fit: cover;
    border: 1px solid var(--line-strong);
}

.contact-link {
    color: var(--muted);
}

.contact-link:hover {
    color: var(--accent);
}

.skill-group {
    height: 100%;
    padding: 1.25rem;
}

footer {
    border-top: 1px solid var(--line);
    color: var(--muted);
    background: var(--footer-bg);
}

@media (max-width: 991.98px) {
    .navbar-collapse {
        margin-top: .75rem;
        padding: .75rem;
        border: 1px solid var(--line);
        border-radius: .85rem;
        background: var(--surface);
        box-shadow: var(--soft-shadow);
    }

    .lang-switcher {
        width: fit-content;
    }

    .hero {
        background:
            var(--hero-gradient),
            url("/static/images/profile.jpg") top right / 380px auto no-repeat;
    }

    .hero::after {
        background: var(--hero-overlay);
    }

    .hero-focus {
        margin-left: 0;
        max-width: none;
    }
}

@media (max-width: 575.98px) {
    .row.g-5 {
        --bs-gutter-x: 1.5rem;
    }

    .site-nav .container {
        gap: .55rem;
    }

    .navbar-brand {
        flex: 1 1 auto;
        max-width: calc(100% - 8.5rem);
        font-size: .98rem;
        line-height: 1.15;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .brand-mark {
        flex: 0 0 auto;
        width: 1.85rem;
        height: 1.85rem;
        margin-right: .45rem;
    }

    .navbar-header-actions {
        flex: 0 0 auto;
        gap: .35rem;
    }

    .theme-toggle {
        width: 2.15rem;
        height: 2.15rem;
        min-height: 2.15rem;
        justify-content: center;
        gap: 0;
        padding: 0;
    }

    .theme-toggle-text {
        display: none;
    }

    .navbar-toggler {
        padding: .28rem .48rem;
    }

    .hero {
        padding-top: 2.75rem;
        padding-bottom: 2.75rem;
        background: var(--hero-gradient);
    }

    .hero-title {
        font-size: clamp(2.1rem, 13vw, 3rem);
        line-height: 1.04;
    }

    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.55;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .focus-item {
        padding: .72rem .85rem;
    }

    .metric-card {
        min-height: auto;
        padding: 1rem;
    }

    .metric-value {
        font-size: 1.65rem;
    }
}