:root {
    --bg: #ffffff;
    --bg-muted: #f5f7fc;
    --text: #172033;
    --muted: #526176;
    --border: #d9e2ef;
    --accent: #3157d5;
    --accent-dark: #16285f;
    --accent-2: #0f9f8f;
    --accent-2-soft: #e3f8f4;
    --accent-3: #d66b1f;
    --accent-3-soft: #fff1dc;
    --accent-4: #b52bbf;
    --accent-4-soft: #f8e8fb;
    --accent-5: #0b7cc7;
    --accent-5-soft: #e5f4ff;
    --accent-soft: #e9efff;
    --card: #ffffff;
    --shadow: 0 18px 45px rgba(23, 32, 51, 0.08);
    --shadow-strong: 0 24px 70px rgba(20, 34, 74, 0.12);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: #fbfcfe;
    color: var(--text);
    font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
}

a {
    color: var(--accent);
    font-weight: 700;
    text-decoration: none;
}

a:hover,
a:focus {
    color: var(--accent-dark);
    text-decoration: underline;
}

.skip-link {
    position: absolute;
    left: 1rem;
    top: -4rem;
    z-index: 2000;
    padding: 0.75rem 1rem;
    background: var(--accent-dark);
    color: #ffffff;
    border-radius: 0.35rem;
}

.skip-link:focus {
    top: 1rem;
}

.site-nav {
    background: rgba(255, 255, 255, 0.97);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
}

.navbar-brand {
    color: var(--text);
    font-weight: 800;
    max-width: calc(100% - 4rem);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.navbar-nav .nav-link {
    color: var(--muted);
    font-size: 0.94rem;
    font-weight: 700;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--accent);
}

.hero {
    padding: 8.5rem 0 5rem;
    background:
        linear-gradient(120deg, rgba(233, 239, 255, 0.95) 0%, rgba(255, 255, 255, 0.98) 34%, rgba(227, 248, 244, 0.9) 68%, rgba(255, 241, 220, 0.72) 100%);
    border-bottom: 1px solid var(--border);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(19rem, 0.8fr);
    gap: 2rem;
    align-items: start;
}

.hero-main {
    min-width: 0;
}

.eyebrow,
.section-kicker {
    margin: 0 0 0.7rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 920px;
    margin: 0;
    color: var(--text);
    font-size: 4.05rem;
    font-weight: 850;
    line-height: 1.05;
}

.hero-subtitle {
    max-width: 980px;
    margin: 1rem 0 0;
    color: var(--accent-dark);
    font-size: 1.45rem;
    font-weight: 750;
}

.hero-copy {
    max-width: 880px;
    margin: 1.35rem 0 0;
    color: var(--muted);
    font-size: 1.1rem;
}

.hero-meta {
    margin: 1rem 0 0;
    color: #34445d;
    font-size: 0.98rem;
    font-weight: 750;
}

.hero-meta a {
    color: var(--accent-dark);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 2rem;
}

.btn {
    min-height: 2.75rem;
    border-radius: 0.45rem;
    font-weight: 800;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.btn-secondary {
    background: var(--accent-2);
    border-color: var(--accent-2);
    color: #ffffff;
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: #0b5e58;
    border-color: #0b5e58;
    color: #ffffff;
}

.btn-outline-primary {
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background: var(--accent);
    border-color: var(--accent);
}

.focus-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 2.2rem;
}

.focus-row span,
.tag-list li {
    display: inline-flex;
    align-items: center;
    min-height: 2rem;
    padding: 0.38rem 0.68rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #ffffff;
    color: #34445d;
    font-size: 0.86rem;
    font-weight: 700;
}

.focus-row span:nth-child(1) {
    border-color: #c9d6ff;
    background: var(--accent-soft);
    color: var(--accent-dark);
}

.focus-row span:nth-child(2) {
    border-color: #bdeee5;
    background: var(--accent-2-soft);
    color: #0b5e58;
}

.focus-row span:nth-child(3) {
    border-color: #ffd9ad;
    background: var(--accent-3-soft);
    color: #7c4a03;
}

.focus-row span:nth-child(4) {
    border-color: #edc3f2;
    background: var(--accent-4-soft);
    color: #7b1f82;
}

.focus-row span:nth-child(5) {
    border-color: #bfe5ff;
    background: var(--accent-5-soft);
    color: #075987;
}

.hero-panel {
    position: relative;
    padding: 1.35rem;
    border: 1px solid rgba(49, 87, 213, 0.18);
    border-radius: 0.75rem;
    background:
        linear-gradient(#ffffff, #ffffff) padding-box,
        linear-gradient(135deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent-4)) border-box;
    box-shadow: var(--shadow-strong);
}

.panel-label {
    margin: 0 0 0.55rem;
    color: var(--accent-2);
    font-size: 0.78rem;
    font-weight: 850;
    text-transform: uppercase;
}

.hero-panel h2 {
    margin: 0;
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 850;
    line-height: 1.25;
}

.panel-role-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin-top: 1.1rem;
}

.panel-role-list span {
    padding: 0.38rem 0.58rem;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-dark);
    font-size: 0.78rem;
    font-weight: 800;
}

.panel-role-list span:nth-child(2) {
    background: var(--accent-2-soft);
    color: #0b5e58;
}

.panel-role-list span:nth-child(3) {
    background: var(--accent-3-soft);
    color: #7c4a03;
}

.panel-role-list span:nth-child(4) {
    background: var(--accent-4-soft);
    color: #7b1f82;
}

.panel-role-list span:nth-child(5) {
    background: var(--accent-5-soft);
    color: #075987;
}

.panel-stack {
    display: grid;
    gap: 0.65rem;
    margin-top: 1.25rem;
}

.panel-stack div {
    padding: 0.85rem;
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    border-radius: 0.5rem;
    background: #fbfcff;
}

.panel-stack div:nth-child(2) {
    border-left-color: var(--accent-2);
}

.panel-stack div:nth-child(3) {
    border-left-color: var(--accent-3);
}

.panel-stack div:nth-child(4) {
    border-left-color: var(--accent-4);
}

.panel-stack strong {
    display: block;
    color: var(--text);
    font-size: 0.95rem;
}

.panel-stack span {
    display: block;
    margin-top: 0.15rem;
    color: var(--muted);
    font-size: 0.84rem;
}

.section-block {
    padding: 4.8rem 0;
    scroll-margin-top: 5rem;
}

.section-muted {
    background:
        linear-gradient(180deg, rgba(245, 247, 252, 0.98) 0%, rgba(239, 247, 255, 0.78) 100%);
}

.section-narrow {
    max-width: 900px;
}

.section-heading {
    max-width: 900px;
    margin-bottom: 2rem;
}

.section-heading h2,
.section-narrow h2 {
    margin: 0 0 1rem;
    color: var(--text);
    font-size: 2.1rem;
    font-weight: 850;
    line-height: 1.2;
}

.section-heading p,
.section-narrow p {
    color: var(--muted);
    font-size: 1rem;
}

.skill-grid,
.case-study-grid,
.project-grid,
.credential-grid,
.role-fit-grid,
.github-grid {
    display: grid;
    gap: 1rem;
}

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

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

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

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

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

.role-fit-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.skill-card,
.case-card,
.project-card,
.credential-card,
.timeline-item,
.fit-card,
.github-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
}

.skill-card {
    padding: 1.25rem;
    border-top: 3px solid var(--accent);
}

.skill-card:nth-child(2) {
    border-top-color: var(--accent-2);
}

.skill-card:nth-child(3) {
    border-top-color: var(--accent-5);
}

.skill-card:nth-child(4) {
    border-top-color: var(--accent-4);
}

.skill-card:nth-child(5) {
    border-top-color: var(--accent-3);
}

.skill-card:nth-child(6) {
    border-top-color: var(--accent-dark);
}

.skill-card h3,
.case-card h3,
.project-card h3,
.credential-card h3,
.timeline-body h3,
.fit-card h3,
.github-card h3 {
    margin: 0;
    color: var(--text);
    font-size: 1.08rem;
    font-weight: 850;
    line-height: 1.25;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin: 1rem 0 0;
    padding: 0;
    list-style: none;
}

.fit-card {
    padding: 1.15rem;
    border-top: 4px solid var(--accent-2);
}

.fit-card:nth-child(2),
.fit-card:nth-child(5) {
    border-top-color: var(--accent);
}

.fit-card:nth-child(3) {
    border-top-color: var(--accent-3);
}

.fit-card p {
    margin: 0.7rem 0 0;
    color: var(--muted);
    font-size: 0.93rem;
}

.github-card {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    padding: 1.2rem;
    border-top: 4px solid var(--accent);
}

.github-card.primary {
    background: linear-gradient(180deg, #ffffff 0%, #f6f9ff 100%);
}

.github-card:nth-child(2) {
    border-top-color: var(--accent-2);
}

.github-card:nth-child(3) {
    border-top-color: var(--accent-5);
}

.github-card:nth-child(4) {
    border-top-color: var(--accent-4);
}

.github-card:nth-child(5) {
    border-top-color: var(--accent-3);
}

.github-card:nth-child(6) {
    border-top-color: var(--accent-dark);
}

.repo-label {
    margin: 0 0 0.45rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 850;
    text-transform: uppercase;
}

.github-card p:not(.repo-label) {
    margin: 0.7rem 0 0;
    color: var(--muted);
    font-size: 0.94rem;
}

.github-card > a {
    display: inline-flex;
    margin: 1rem 0 0 0;
    font-size: 0.92rem;
}

.case-card {
    display: flex;
    min-height: 100%;
    flex-direction: column;
    padding: 1.25rem;
    border-top: 4px solid var(--accent);
}

.case-card:nth-child(3n + 2) {
    border-top-color: var(--accent-2);
}

.case-card:nth-child(3n) {
    border-top-color: var(--accent-3);
}

.case-label {
    margin: 0 0 0.4rem;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 800;
}

.case-domain {
    margin: 0.45rem 0 1rem;
    color: var(--muted);
    font-size: 0.93rem;
    font-weight: 700;
}

.case-card dl {
    margin: 0;
}

.case-card dt {
    margin-top: 0.85rem;
    color: var(--text);
    font-size: 0.84rem;
    font-weight: 850;
}

.case-card dd {
    margin: 0.15rem 0 0;
    color: var(--muted);
    font-size: 0.93rem;
}

.compact-tags li {
    min-height: 1.75rem;
    padding: 0.28rem 0.55rem;
    background: var(--accent-soft);
    color: var(--accent-dark);
    font-size: 0.78rem;
}

.case-card:nth-child(3n + 2) .compact-tags li {
    background: var(--accent-2-soft);
    color: #0b5e58;
}

.case-card:nth-child(3n) .compact-tags li {
    background: var(--accent-3-soft);
    color: #7c4a03;
}

.confidential-note {
    margin: auto 0 0;
    padding-top: 1rem;
    color: #68778c;
    font-size: 0.86rem;
    font-style: italic;
}

.timeline {
    display: grid;
    gap: 1rem;
}

.timeline-item {
    display: grid;
    grid-template-columns: 14rem minmax(0, 1fr);
    gap: 1.4rem;
    padding: 1.25rem;
}

.timeline-meta {
    color: var(--accent-dark);
    font-size: 0.95rem;
    font-weight: 850;
}

.timeline-body p {
    margin: 0.45rem 0 0;
    color: var(--muted);
}

.org-line,
.date-line,
.tech-line {
    color: var(--muted);
    font-weight: 700;
}

.project-card,
.credential-card {
    padding: 1.15rem;
    border-top: 3px solid var(--accent);
}

.project-card:nth-child(3n + 2),
.credential-card:nth-child(3n + 2) {
    border-top-color: var(--accent-2);
}

.project-card:nth-child(3n),
.credential-card:nth-child(3n) {
    border-top-color: var(--accent-3);
}

.project-card:nth-child(4n),
.credential-card:nth-child(4n) {
    border-top-color: var(--accent-4);
}

.project-card p,
.credential-card p {
    margin: 0.65rem 0 0;
    color: var(--muted);
    font-size: 0.94rem;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem 0.75rem;
    margin-top: 0.75rem;
}

.project-card a,
.project-links a {
    display: inline-flex;
    font-size: 0.92rem;
}

.credential-card.featured {
    border-top: 3px solid var(--accent-2);
}

.credential-card.featured:first-child {
    border-top-color: var(--accent);
}

.credential-id {
    color: #68778c;
    font-size: 0.84rem;
    overflow-wrap: anywhere;
}

.contact-band {
    background: linear-gradient(135deg, #0f1d35 0%, #16285f 34%, #3157d5 58%, #0f9f8f 82%, #d66b1f 100%);
    color: #ffffff;
}

.contact-band .section-kicker,
.contact-band h2,
.contact-band p {
    color: #ffffff;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
}

.contact-grid a,
.contact-grid span,
.copy-email {
    display: flex;
    align-items: center;
    min-height: 4rem;
    padding: 0.9rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.04);
    color: #ffffff;
    font-weight: 800;
    text-align: left;
}

.copy-email {
    cursor: pointer;
    font-family: inherit;
}

.contact-grid a:hover,
.contact-grid a:focus,
.copy-email:hover,
.copy-email:focus {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

.contact-email {
    overflow-wrap: anywhere;
}

.site-footer {
    padding: 1.5rem 0;
    background: #0f1d35;
    color: #dce7f7;
}

.site-footer p {
    margin: 0;
    font-size: 0.92rem;
}

@media (max-width: 1199px) {
    .skill-grid,
    .case-study-grid,
    .project-grid,
    .role-fit-grid,
    .github-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

@media (max-width: 767px) {
    .hero {
        padding: 7.25rem 0 3.75rem;
    }

    .hero h1 {
        font-size: 2.55rem;
    }

    .hero-subtitle {
        font-size: 1.15rem;
    }

    .hero-copy {
        font-size: 1rem;
    }

    .section-block {
        padding: 3.4rem 0;
    }

    .section-heading h2,
    .section-narrow h2 {
        font-size: 1.7rem;
    }

    .skill-grid,
    .case-study-grid,
    .project-grid,
    .credential-grid,
    .contact-grid,
    .role-fit-grid,
    .github-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.6rem;
    }

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