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

:root {
    --bg: #0f172a;
    --bg-soft: #16213c;
    --bg-muted: #101828;
    --card: #ffffff;
    --text: #0f172a;
    --text-muted: #475467;
    --accent: #1e88e5;
    --accent-soft: rgba(30, 136, 229, 0.1);
    --neutral: #e4e7ec;
    --border: #d0d5dd;
    --font: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-alt: 'Space Grotesk', 'Inter', sans-serif;
}

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: #fff;
    line-height: 1.6;
    min-height: 100vh;
}

body.light-mode {
    --bg: #f5f6fb;
    --bg-soft: #ffffff;
    --bg-muted: #f2f4f7;
    --card: #ffffff;
    --text: #0f172a;
    --text-muted: #475467;
    --accent: #0f62fe;
    --accent-soft: rgba(15, 98, 254, 0.12);
    --neutral: #d0d5dd;
    --border: #e4e7ec;
    color: var(--text);
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(15, 23, 42, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(16px);
}

body.light-mode .site-header {
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom-color: rgba(15, 23, 42, 0.08);
}

.nav-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand {
    font-family: var(--font-alt);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-links {
    display: flex;
    gap: 1rem;
    font-size: 0.95rem;
}

.nav-links a {
    padding: 0.4rem 0.8rem;
    border-radius: 999px;
    transition: background-color 0.2s ease;
    color: rgba(255, 255, 255, 0.75);
}

.nav-links a:hover,
.nav-links a:focus-visible {
    background-color: rgba(255, 255, 255, 0.1);
}

body.light-mode .nav-links a {
    color: var(--text-muted);
}

body.light-mode .nav-links a:hover {
    background-color: rgba(15, 23, 42, 0.05);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-cta {
    padding: 0.45rem 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 999px;
    font-weight: 500;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-cta:hover {
    background-color: #fff;
    color: var(--bg);
}

body.light-mode .nav-cta {
    border-color: var(--border);
}

.theme-toggle {
    border: none;
    background: transparent;
    font-size: 1.2rem;
    cursor: pointer;
    color: inherit;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.35rem;
    border: none;
    background: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background-color: currentColor;
    display: block;
    transition: transform 0.2s ease;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
}

.hero {
    display: grid;
    grid-template-columns: minmax(320px, 1.1fr) minmax(260px, 0.9fr);
    gap: 2.5rem;
    padding: 3rem 0;
    align-items: center;
    min-height: calc(100vh - 140px);
}

.eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #94a3b8;
    margin-bottom: 0.8rem;
}

body.light-mode .eyebrow {
    color: var(--text-muted);
}

.hero-text h1 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-family: var(--font-alt);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.intro {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 1.5rem;
}

body.light-mode .intro {
    color: var(--text-muted);
}

.hero-bullets {
    margin-bottom: 1.5rem;
    color: #cbd5f5;
}

.hero-bullets li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.2rem 0;
}

.hero-bullets li::before {
    content: '•';
    color: var(--accent);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.btn {
    border-radius: 999px;
    padding: 0.8rem 1.4rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
    background-color: var(--accent);
    color: #fff;
    box-shadow: 0 10px 20px rgba(30, 136, 229, 0.35);
}

.btn.primary:hover {
    transform: translateY(-1px);
}

.btn.ghost {
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #fff;
    background: transparent;
}

body.light-mode .btn.ghost {
    border-color: var(--border);
    color: var(--text);
}

.btn.full {
    width: 100%;
    justify-content: center;
}

.hero-profile {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100%;
    justify-content: center;
}

.profile-card {
    background-color: var(--bg-soft);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.2rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    height: 100%;
}

body.light-mode .profile-card {
    background-color: var(--card);
    border-color: var(--border);
}

.profile-card img {
    width: 100%;
    border-radius: 1rem;
    object-fit: cover;
}

.profile-info .name {
    font-weight: 600;
    font-size: 1.1rem;
}

.profile-info dl {
    display: grid;
    gap: 0.6rem;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
}

body.light-mode .profile-info dl {
    color: var(--text-muted);
}

dt {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

dd {
    margin: 0;
    font-weight: 500;
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 1.25rem;
}

.hero-metrics div {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 1.25rem;
    padding: 1.4rem 1.2rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.06);
    min-height: 150px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.4rem;
}

body.light-mode .hero-metrics div {
    background-color: #fff;
    border-color: var(--border);
}

.hero-metrics span {
    display: block;
    font-size: 2.1rem;
    font-weight: 600;
    color: var(--accent);
    font-family: var(--font-alt);
}

.hero-metrics p {
    margin: 0;
    font-size: 1rem;
    color: inherit;
}

.section {
    margin-top: 5rem;
    padding: 3rem 0;
}

.section.muted {
    background-color: var(--bg-soft);
    border-radius: 1.5rem;
    padding: 3rem;
}

.section.highlight {
    background-color: var(--accent-soft);
    border-radius: 1.5rem;
    padding: 3rem;
    color: var(--text);
}

.section.highlight .section-header h2,
.section.highlight .section-header p {
    color: #fff;
}

.section.highlight .section-header p {
    color: rgba(255, 255, 255, 0.85);
}

.contact.section {
    padding-bottom: 0;
}

.section-header {
    max-width: 640px;
    margin-bottom: 2.5rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.card {
    background-color: var(--bg-soft);
    padding: 1.8rem;
    border-radius: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

body.light-mode .card {
    background-color: var(--card);
    border-color: var(--border);
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.card ul li {
    margin-bottom: 0.7rem;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
}

body.light-mode .card ul li {
    color: var(--text-muted);
}

.timeline {
    display: grid;
    gap: 1.5rem;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: rgba(255, 255, 255, 0.15);
}

body.light-mode .timeline::before {
    background-color: var(--border);
}

.timeline li {
    padding-left: 2.8rem;
    position: relative;
}

.timeline li::before {
    content: '';
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent);
    position: absolute;
    left: 6px;
    top: 6px;
}

.timeframe {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #94a3b8;
}

body.light-mode .timeframe {
    color: var(--text-muted);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--bg-soft);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.2rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

body.light-mode .project-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

body.light-mode .project-card {
    background-color: var(--card);
    border-color: var(--border);
}

.project-preview {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--preview-bg, linear-gradient(135deg, #1e88e5, #7c4dff));
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.project-card:hover .project-preview img {
    transform: scale(1.05);
}

.preview-label {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-alt);
    font-size: 1.4rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.06em;
    pointer-events: none;
}

.project-preview img[src]:not([src=""]) ~ .preview-label {
    display: none;
}

.project-preview img:not([style*="display: none"]) ~ .preview-label {
    display: none;
}

.project-body {
    padding: 1.5rem 1.8rem 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1;
}

.project-meta {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.project-status {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
}

.project-status.secondary {
    color: #f97316;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tags span {
    padding: 0.2rem 0.8rem;
    border-radius: 999px;
    background-color: rgba(255, 255, 255, 0.08);
    font-size: 0.85rem;
}

body.light-mode .tags span {
    background-color: var(--bg-muted);
    color: var(--text);
}

.project-links {
    display: flex;
    gap: 1rem;
    font-weight: 500;
    margin-top: auto;
    padding-top: 0.5rem;
}

.project-links a {
    color: var(--accent);
    transition: opacity 0.2s ease;
}

.project-links a:hover {
    opacity: 0.8;
}

.project-status.development {
    color: #10b981;
}

.project-highlights {
    margin: 1rem 0;
    padding-left: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
}

body.light-mode .project-highlights {
    color: var(--text-muted);
}

.project-highlights li {
    margin-bottom: 0.4rem;
}

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.testimonial-card {
    background-color: var(--bg-soft);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.2rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

body.light-mode .testimonial-card {
    background-color: var(--card);
    border-color: var(--border);
}

body.light-mode .testimonial-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    font-style: italic;
}

body.light-mode .testimonial-text {
    color: var(--text);
}

.testimonial-author {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    margin-top: auto;
}

body.light-mode .testimonial-author {
    border-top-color: var(--border);
}

.author-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.author-role {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

body.light-mode .author-role {
    color: var(--text-muted);
}

/* Blog */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.blog-card {
    background-color: var(--bg-soft);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 1.2rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.blog-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

body.light-mode .blog-card {
    background-color: var(--card);
    border-color: var(--border);
}

body.light-mode .blog-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.blog-date {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    font-weight: 500;
}

.blog-card h3 {
    font-size: 1.15rem;
    line-height: 1.4;
}

.blog-card > p:not(.blog-date) {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.6;
    flex: 1;
}

body.light-mode .blog-card > p:not(.blog-date) {
    color: var(--text-muted);
}

.blog-card .tags {
    margin-top: auto;
    padding-top: 0.5rem;
}

.blog-card-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    flex: 1;
}

.blog-card .read-more {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: auto;
    padding-top: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: gap 0.2s ease;
}

.blog-card:hover .read-more {
    gap: 0.7rem;
}

/* Blog Post (individual article page) */
.blog-post {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 0 4rem;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent);
    font-weight: 500;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    transition: gap 0.2s ease;
}

.back-link:hover {
    gap: 0.7rem;
}

.blog-post-header {
    margin-bottom: 3rem;
}

.blog-post-header h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-family: var(--font-alt);
    line-height: 1.25;
    margin: 1rem 0 0.75rem;
}

.blog-post-meta {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

body.light-mode .blog-post-meta {
    color: var(--text-muted);
}

.blog-post-body {
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

body.light-mode .blog-post-body {
    color: var(--text);
}

.blog-post-body .lead {
    font-size: 1.15rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2rem;
    border-left: 3px solid var(--accent);
    padding-left: 1.2rem;
}

body.light-mode .blog-post-body .lead {
    color: var(--text);
}

.blog-post-body h2 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-family: var(--font-alt);
}

.blog-post-body h3 {
    font-size: 1.2rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.blog-post-body p {
    margin-bottom: 1.2rem;
}

.blog-post-body ul,
.blog-post-body ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
    list-style: disc;
}

.blog-post-body ol {
    list-style: decimal;
}

.blog-post-body li {
    margin-bottom: 0.6rem;
    color: rgba(255, 255, 255, 0.85);
}

body.light-mode .blog-post-body li {
    color: var(--text-muted);
}

.blog-post-body code {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 0.15rem 0.5rem;
    border-radius: 0.3rem;
    font-size: 0.9em;
    font-family: 'Courier New', Courier, monospace;
}

body.light-mode .blog-post-body code {
    background-color: var(--bg-muted);
    color: var(--accent);
}

.blog-post-body strong {
    font-weight: 600;
    color: #fff;
}

body.light-mode .blog-post-body strong {
    color: var(--text);
}

.blog-post-cta {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

body.light-mode .blog-post-cta {
    border-top-color: var(--border);
}

/* Highlight Grid */
.highlight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.highlight-card {
    background-color: #fff;
    border-radius: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
}

.highlight-card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.highlight-card ul li {
    margin-bottom: 0.75rem;
    color: var(--text-muted);
}

.contact-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.contact-info ul li {
    margin-bottom: 0.9rem;
}

.contact-info a {
    color: var(--accent);
    font-weight: 500;
}

.contact-form {
    display: grid;
    gap: 1rem;
    background-color: var(--bg-soft);
    padding: 1.5rem;
    border-radius: 1.2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

body.light-mode .contact-form {
    background-color: var(--card);
    border-color: var(--border);
}

.contact-form label {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea {
    padding: 0.85rem 1rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.05);
    color: inherit;
    font: inherit;
}

body.light-mode .contact-form input,
body.light-mode .contact-form textarea {
    border-color: var(--border);
    background-color: var(--bg-muted);
    color: var(--text);
}

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

.form-loading {
    font-size: 0.85rem;
    color: var(--accent);
}

.site-footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
}

body.light-mode .site-footer {
    border-top-color: var(--border);
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .nav-toggle {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        padding: 1rem 2rem 1.5rem;
        background-color: rgba(15, 23, 42, 0.98);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        flex-direction: column;
        align-items: flex-start;
        transform: translateY(-150%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }

    body.light-mode .nav {
        background-color: rgba(255, 255, 255, 0.98);
        border-bottom-color: rgba(15, 23, 42, 0.08);
    }

    .nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links {
        flex-direction: column;
        width: 100%;
    }

    .nav-actions {
        width: 100%;
        justify-content: space-between;
    }

    main {
        padding: 3rem 1.5rem 5rem;
    }

    .section.muted,
    .section.highlight {
        padding: 2rem;
    }
}

@media (max-width: 600px) {
    .nav-wrapper {
        padding: 0.9rem 1.25rem;
    }

    .hero {
        padding-top: 3rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .project-preview {
        aspect-ratio: 16 / 10;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .fade-in {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .project-card:hover {
        transform: none;
    }
    .project-card:hover .project-preview img {
        transform: none;
    }
}