:root {
    color-scheme: light dark;
    --bg: #0f172a;
    --bg-alt: #111f34;
    --fg: #f8fafc;
    --muted: #cbd5f5;
    --accent: #38bdf8;
    --accent-strong: #0ea5e9;
    --surface: rgba(15, 23, 42, 0.65);
    --surface-alt: rgba(15, 23, 42, 0.9);
    --border: rgba(148, 163, 184, 0.2);
    --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background: linear-gradient(135deg, #0b1120, #1e293b 45%, #020617 100%);
    color: var(--fg);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

.container {
    width: min(1100px, 92vw);
    margin: 0 auto;
}

.hero {
    padding: clamp(4rem, 8vw, 6rem) 0 3rem;
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.22), transparent 60%);
    pointer-events: none;
}

.hero__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: clamp(2rem, 6vw, 4rem);
    align-items: start;
}

.eyebrow {
    font-size: 0.9rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 1.25rem;
}

h1 {
    font-size: clamp(2.75rem, 5.5vw, 3.4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.lede {
    font-size: clamp(1.05rem, 2.2vw, 1.15rem);
    color: var(--muted);
    margin-bottom: 2rem;
}

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 1.75rem;
    border-radius: 999px;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid transparent;
}

.btn--primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: #04152d;
    box-shadow: 0 15px 40px rgba(14, 165, 233, 0.25);
}

.btn--primary:hover {
    transform: translateY(-2px);
}

.btn--ghost {
    border: 1px solid var(--border);
    color: var(--muted);
}

.btn--ghost:hover {
    border-color: var(--accent);
}

.hero__card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: clamp(1.75rem, 4vw, 2.5rem);
    backdrop-filter: blur(16px);
}

.hero__card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.hero__card ul {
    list-style: none;
    display: grid;
    gap: 1rem;
    color: var(--muted);
}

.hero__card span {
    display: block;
    font-weight: 600;
    color: var(--fg);
}

.hero__meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    padding-top: 3rem;
    font-size: 0.95rem;
    color: var(--muted);
}

.meta-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(203, 213, 225, 0.7);
    display: block;
    margin-bottom: 0.3rem;
}

.section {
    padding: clamp(3rem, 8vw, 5rem) 0;
}

.section--alt {
    background: rgba(15, 23, 42, 0.35);
}

.section--cta {
    text-align: center;
}

.section__header {
    max-width: 720px;
    margin-bottom: 3rem;
}

.section__header h2 {
    font-size: clamp(2rem, 3.3vw, 2.6rem);
    margin-bottom: 0.75rem;
}

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

.grid {
    display: grid;
    gap: 1.75rem;
}

.grid--three {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid--two {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.card {
    background: var(--surface);
    border-radius: 20px;
    border: 1px solid var(--border);
    padding: 2rem;
    backdrop-filter: blur(16px);
}

.card h3 {
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

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

.timeline {
    border-left: 2px solid rgba(59, 130, 246, 0.35);
    margin-left: 1rem;
    display: grid;
    gap: 2.5rem;
}

.timeline__item {
    position: relative;
    padding-left: 2.5rem;
}

.timeline__item::before {
    content: "";
    position: absolute;
    left: -1.1rem;
    top: 0.3rem;
    width: 0.85rem;
    height: 0.85rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.15);
}

.timeline__meta {
    font-size: 0.9rem;
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.2rem;
    margin-bottom: 0.75rem;
}

.timeline__content h3 {
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.metric {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 18px;
    text-align: center;
}

.metric__value {
    font-family: var(--font-mono);
    font-size: 2rem;
    color: var(--accent);
    display: block;
    margin-bottom: 0.75rem;
}

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

.cert-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    margin: 2.5rem 0 3rem;
}

.cert-badges a {
    display: block;
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0.95;
}

.cert-badges a:hover {
    transform: translateY(-4px);
    opacity: 1;
}

.cert-badges img {
    display: block;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.cert-list {
    list-style: none;
    display: grid;
    gap: 0.85rem;
    color: var(--muted);
}

.cert-list strong {
    color: var(--fg);
}

.quote {
    background: var(--surface-alt);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 20px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.quote::before {
    content: "\201C";
    position: absolute;
    top: -1.2rem;
    left: 1.2rem;
    font-size: 4rem;
    color: rgba(148, 163, 184, 0.18);
}

.quote p {
    font-size: 1.05rem;
    color: var(--fg);
    margin-bottom: 1.5rem;
}

.quote cite {
    font-size: 0.9rem;
    color: var(--muted);
    font-style: normal;
}

.section--cta h2 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    margin-bottom: 1rem;
}

.section--cta p {
    margin-bottom: 2rem;
    color: var(--muted);
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer {
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    background: rgba(2, 6, 23, 0.9);
}

.footer__content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    font-size: 0.9rem;
    color: var(--muted);
}

.footer nav {
    display: flex;
    gap: 1.5rem;
}

@media (min-width: 720px) {
    .footer__content {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (max-width: 640px) {
    .hero__card {
        order: -1;
    }
    .hero__meta {
        gap: 1rem;
    }
}

.positioning {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 1.25rem;
}

.project-grid .project h3 {
    margin-bottom: 0.75rem;
}

.project-grid .project h3 a {
    color: var(--fg);
}

.project-grid .project h3 a:hover {
    color: var(--accent);
}

.project-grid .project p {
    color: var(--muted);
}

.principles {
    list-style: none;
    display: grid;
    gap: 1.25rem;
    background: var(--surface);
    border-radius: 18px;
    border: 1px solid var(--border);
    padding: clamp(1.75rem, 4vw, 2.5rem);
}

.principles li {
    color: var(--muted);
    line-height: 1.5;
}

.principles li span {
    display: block;
    color: var(--fg);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

@media (max-width: 768px) {
    .principles {
        padding: 1.5rem;
    }
}


.alt-link {
    margin-top: 0.75rem;
    font-size: 0.95rem;
}

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

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


.form-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(2rem, 6vw, 4rem) 0;
}

.form-card {
    max-width: 640px;
    background: var(--surface);
    border-radius: 22px;
    border: 1px solid var(--border);
    padding: clamp(2rem, 5vw, 3rem);
    box-shadow: 0 20px 60px rgba(8, 11, 23, 0.45);
}

.resume-form {
    display: grid;
    gap: 1.25rem;
    margin-top: 2rem;
}

.resume-form label {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--muted);
}

.resume-form input,
.resume-form textarea {
    padding: 0.85rem 1rem;
    border-radius: 10px;
    border: 1px solid rgba(148, 163, 184, 0.3);
    background: rgba(15, 23, 42, 0.4);
    color: var(--fg);
    font-family: var(--font-sans);
}

.resume-form input:focus,
.resume-form textarea:focus {
    outline: 2px solid var(--accent);
    border-color: transparent;
}

.form-note {
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.form-note a {
    color: var(--accent);
}

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