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

:root {
    --background: #07111f;
    --surface: #101c2e;
    --surface-strong: #17263b;
    --primary: #2dd4bf;
    --accent: #60a5fa;
    --text: #f8fafc;
    --muted: #a8b3c7;
    --border: #2a3b52;
    --warning: #facc15;
    --max-width: 1120px;
}

html {
    scroll-behavior: smooth;
}

body {
    background:
        linear-gradient(135deg, rgba(45, 212, 191, 0.08), transparent 28%),
        linear-gradient(315deg, rgba(96, 165, 250, 0.08), transparent 25%),
        var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.7;
}

a {
    color: inherit;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--warning);
    outline-offset: 4px;
}

.container {
    margin: 0 auto;
    max-width: var(--max-width);
    padding: 0 24px;
    width: 100%;
}

.site-header {
    background-color: rgba(7, 17, 31, 0.95);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.navbar {
    align-items: center;
    display: flex;
    justify-content: space-between;
    margin: 0 auto;
    max-width: var(--max-width);
    padding: 18px 24px;
}

.logo {
    align-items: center;
    color: var(--text);
    display: inline-flex;
    font-size: 1.15rem;
    font-weight: 700;
    gap: 10px;
    letter-spacing: 0.04em;
    text-decoration: none;
    text-transform: uppercase;
}

.logo-mark {
    display: block;
    height: 30px;
    width: auto;
}

.logo-text {
    line-height: 1;
}

.logo-accent {
    color: var(--primary);
}

.nav-links {
    align-items: center;
    display: flex;
    gap: 18px;
    list-style: none;
}

.nav-links a {
    color: var(--muted);
    font-size: 0.95rem;
    text-decoration: none;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
}

.menu-toggle {
    background-color: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    cursor: pointer;
    display: none;
    padding: 8px 12px;
}

.hero,
.page-hero {
    padding: 88px 0;
}

.hero-grid {
    align-items: center;
    display: grid;
    gap: 32px;
    grid-template-columns: 1.6fr 1fr;
}

.eyebrow {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0;
    margin-bottom: 12px;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(2.1rem, 5vw, 4.4rem);
    line-height: 1.05;
    margin-bottom: 20px;
    max-width: 900px;
}

h2 {
    font-size: 1.35rem;
    line-height: 1.25;
    margin-bottom: 12px;
}

h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.hero-summary,
.page-hero p {
    color: var(--muted);
    font-size: 1.08rem;
    max-width: 760px;
}

.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.button {
    border-radius: 6px;
    display: inline-flex;
    font-weight: 700;
    min-height: 44px;
    padding: 10px 16px;
    text-decoration: none;
}

.primary-button {
    background-color: var(--primary);
    color: #05201c;
}

.secondary-button {
    border: 1px solid var(--border);
    color: var(--text);
}

.status-panel,
.profile-stats {
    background-color: rgba(16, 28, 46, 0.9);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: grid;
    gap: 18px;
    padding: 24px;
}

.status-panel div,
.profile-stats div {
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
}

.status-panel div:last-child,
.profile-stats div:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.status-label {
    color: var(--muted);
    display: block;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.hero-visual {
    display: grid;
    gap: 16px;
}

.hero-visual img,
.hero-photo {
    border: 1px solid var(--border);
    border-radius: 8px;
    display: block;
    height: auto;
    width: 100%;
}

.hero-visual img {
    aspect-ratio: 4 / 5;
    object-fit: cover;
    object-position: center top;
}

.visual-page-hero {
    padding: 64px 0;
}

.visual-hero-grid {
    align-items: center;
    display: grid;
    gap: 32px;
    grid-template-columns: 1.1fr 0.9fr;
}

.hero-photo {
    aspect-ratio: 4 / 3;
    object-fit: cover;
    object-position: center;
}

.wide-photo {
    aspect-ratio: 16 / 9;
}

.section {
    padding: 72px 0;
}

.card-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.certification-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.project-card,
.resume-block,
.timeline-item {
    background-color: rgba(16, 28, 46, 0.86);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
}

.card p,
.project-card p,
.resume-block p,
.timeline-item p {
    color: var(--muted);
}

.clean-list {
    color: var(--muted);
    list-style-position: inside;
}

.clean-list li + li {
    margin-top: 6px;
}

.note {
    border-top: 1px solid var(--border);
    margin-top: 18px;
    padding-top: 14px;
}

.certificate-card {
    align-items: center;
    display: flex;
    flex-direction: column;
    text-align: center;
}

.badge-link {
    background-color: #ffffff;
    border-radius: 8px;
    display: inline-flex;
    margin-bottom: 18px;
    padding: 14px;
}

.badge-image {
    display: block;
    height: auto;
    width: min(160px, 42vw);
}

.timeline {
    display: grid;
    gap: 18px;
}

.timeline-item {
    display: grid;
    gap: 18px;
    grid-template-columns: auto 1fr;
}

.timeline-step {
    align-items: center;
    background-color: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--primary);
    display: inline-flex;
    font-weight: 700;
    height: 48px;
    justify-content: center;
    width: 48px;
}

.project-list,
.resume-layout {
    display: grid;
    gap: 18px;
}

.section-intro {
    max-width: 760px;
}

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

.project-card {
    align-items: center;
    display: grid;
    gap: 20px;
    grid-template-columns: 1fr auto;
}

.featured-project {
    border-color: rgba(45, 212, 191, 0.55);
}

.resume-summary {
    color: var(--text) !important;
    margin-bottom: 14px;
}

.project-points {
    color: var(--muted);
    margin-left: 18px;
}

.project-points li + li {
    margin-top: 8px;
}

.link-group {
    align-items: flex-start;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tag {
    color: var(--primary) !important;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.text-link {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.text-link:hover {
    text-decoration: underline;
}

code {
    background-color: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 5px;
}

.site-footer {
    border-top: 1px solid var(--border);
    color: var(--muted);
    padding: 28px 0;
}

.footer-content {
    align-items: center;
    display: flex;
    gap: 18px;
    justify-content: space-between;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.footer-links a {
    align-items: center;
    color: var(--text);
    display: inline-flex;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-links svg {
    display: block;
    height: 22px;
    width: 22px;
}

@media (max-width: 900px) {
    .hero-grid,
    .card-grid,
    .certification-grid,
    .visual-hero-grid,
    .project-card {
        grid-template-columns: 1fr;
    }

    .project-card {
        align-items: start;
    }

    .link-group {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

@media (max-width: 760px) {
    .navbar {
        align-items: flex-start;
        flex-direction: column;
    }

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

    .nav-links {
        display: none;
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }

    .nav-links.open {
        display: flex;
    }

    .hero,
    .page-hero {
        padding: 64px 0;
    }

    .footer-content {
        align-items: flex-start;
        flex-direction: column;
    }
}