:root {
    --bg: #f6f5f2;
    --bg-elev: #fdfcf9;
    --text: #1a1a1a;
    --text-muted: #6b6b6b;
    --border: rgba(26, 26, 26, 0.1);
    --accent: #1a1a1a;
    --accent-muted: #525252;
    --on-accent: #fdfcf9;
    --btn-bg: #1a1a1a;
    --btn-bg-hover: #333333;
    --accent-soft: rgba(26, 26, 26, 0.06);
    --accent-soft-md: rgba(26, 26, 26, 0.1);
    --accent-soft-strong: rgba(26, 26, 26, 0.12);
    --accent-ring: rgba(26, 26, 26, 0.22);
    --focus-ring: rgba(26, 26, 26, 0.08);
    --shadow-btn: 0 8px 24px rgba(26, 26, 26, 0.12);
    --shadow-btn-hover: 0 12px 28px rgba(26, 26, 26, 0.16);
    --island-bg: rgba(253, 252, 249, 0.88);
    --island-border: rgba(26, 26, 26, 0.08);
    --shadow-sm: 0 1px 2px rgba(26, 26, 26, 0.04);
    --shadow-md: 0 4px 16px rgba(26, 26, 26, 0.06);
    --shadow-lg: 0 12px 40px rgba(26, 26, 26, 0.08);
    --shadow-xl: 0 24px 56px rgba(26, 26, 26, 0.1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font-body: 'DM Sans', system-ui, -apple-system, sans-serif;
    --font-heading: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --mesh-line: rgba(26, 26, 26, 0.07);
    --mesh-fade: rgba(246, 245, 242, 0.92);
}

[data-theme="dark"] {
    --bg: #0f0f0f;
    --bg-elev: #1a1a1a;
    --text: #f0efeb;
    --text-muted: #a3a3a3;
    --border: rgba(240, 239, 235, 0.12);
    --accent: #f0efeb;
    --accent-muted: #d4d4d4;
    --on-accent: #1a1a1a;
    --btn-bg: #f0efeb;
    --btn-bg-hover: #d9d8d4;
    --accent-soft: rgba(240, 239, 235, 0.06);
    --accent-soft-md: rgba(240, 239, 235, 0.1);
    --accent-soft-strong: rgba(240, 239, 235, 0.14);
    --accent-ring: rgba(240, 239, 235, 0.25);
    --focus-ring: rgba(240, 239, 235, 0.12);
    --shadow-btn: 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-btn-hover: 0 12px 32px rgba(0, 0, 0, 0.45);
    --island-bg: rgba(26, 26, 26, 0.92);
    --island-border: rgba(240, 239, 235, 0.1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 24px 56px rgba(0, 0, 0, 0.45);
    --mesh-line: rgba(240, 239, 235, 0.06);
    --mesh-fade: rgba(15, 15, 15, 0.94);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 120px;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background var(--transition), color var(--transition);
}

img {
    max-width: 100%;
    height: auto;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.eyebrow {
    font-size: 0.6875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 8px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.navbar-island {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    width: calc(100% - 32px);
    max-width: 800px;
}

.island-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 24px;
    background: var(--island-bg);
    backdrop-filter: blur(14px) saturate(110%);
    border: 1px solid var(--island-border);
    border-radius: 999px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition);
}

.navbar-island.scrolled .island-content {
    background: var(--bg-elev);
    box-shadow: var(--shadow-lg);
    padding: 10px 20px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.brand-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links.desktop {
    display: none;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: all var(--transition);
}

.nav-link:hover {
    color: var(--text);
    background: var(--accent-soft);
}

.nav-link.active {
    color: var(--text);
    font-weight: 600;
    background: var(--accent-soft-md);
    box-shadow: inset 0 0 0 1px var(--accent-ring);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-muted);
    transition: all var(--transition);
}

.theme-toggle:hover {
    color: var(--text);
    background: var(--accent-soft);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.icon-sun {
    display: block;
}

.icon-moon {
    display: none;
}

[data-theme="dark"] .icon-sun {
    display: none;
}

[data-theme="dark"] .icon-moon {
    display: block;
}

.btn-cv {
    padding: 8px 20px;
    background: var(--btn-bg);
    color: var(--on-accent);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 999px;
    transition: all var(--transition);
    box-shadow: var(--shadow-btn);
}

.btn-cv:hover {
    background: var(--btn-bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    height: 28px;
    justify-content: center;
    align-items: center;
}

.hamburger span {
    width: 20px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-links.mobile {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 28px;
    margin-top: 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

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

.nav-links.mobile .nav-link {
    text-align: center;
    width: 100%;
}

.theme-toggle-mobile {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    margin-top: 4px;
    padding: 10px 16px;
    border-radius: 999px;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
}

.theme-toggle-mobile:hover {
    color: var(--text);
    background: var(--accent-soft);
}

.theme-toggle-label {
    line-height: 1;
}

.nav-mobile-only {
    display: flex;
}

.nav-desktop-only {
    display: none;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-mesh {
    position: absolute;
    inset: -20%;
    background-image:
        linear-gradient(var(--mesh-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--mesh-line) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(
        ellipse 70% 60% at 50% 38%,
        #000 0%,
        #000 35%,
        transparent 72%
    );
    -webkit-mask-image: radial-gradient(
        ellipse 70% 60% at 50% 38%,
        #000 0%,
        #000 35%,
        transparent 72%
    );
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 85% 70% at 50% 50%, transparent 25%, var(--mesh-fade) 78%),
        radial-gradient(ellipse 90% 60% at 50% -10%, var(--accent-soft-md), transparent 70%);
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 28px;
    position: relative;
    z-index: 1;
    max-width: 40rem;
    margin: 0 auto;
}

.hero-photo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-ring {
    position: relative;
    width: clamp(160px, 40vw, 200px);
    height: clamp(160px, 40vw, 200px);
    padding: 5px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
}

.photo-ring img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    background: var(--bg-elev);
}

.hero-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    text-align: center;
}

.hero-headline {
    font-family: var(--font-heading);
    font-size: clamp(2.25rem, 5vw, 3.25rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--text);
}

.hero-subheadline {
    font-size: clamp(0.9375rem, 2vw, 1.125rem);
    color: var(--text-muted);
    margin-bottom: 24px;
    max-width: 32rem;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.65;
}

.hero-social {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.hero-social a {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.hero-social a:hover {
    color: var(--text);
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.hero-social svg {
    width: 20px;
    height: 20px;
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--btn-bg);
    color: var(--on-accent);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    box-shadow: var(--shadow-btn);
}

.btn-hero:hover {
    background: var(--btn-bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
}

.btn-hero svg {
    width: 20px;
    height: 20px;
}

.projects {
    padding: 120px 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.project-card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-ring);
}

.project-thumb {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 16/9;
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.project-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 6px 12px;
    background: var(--btn-bg);
    color: var(--on-accent);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.project-body {
    padding: 24px;
}

.project-body h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.project-body p {
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.7;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tech-pill {
    padding: 4px 12px;
    background: var(--accent-soft);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text);
    font-weight: 600;
    transition: all var(--transition);
}

.project-link:hover {
    gap: 10px;
}

.project-link svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition);
}

.project-link:hover svg {
    transform: translateX(4px);
}

.projects-footer {
    text-align: center;
    margin-top: 48px;
}

.btn-load-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 32px;
    background: transparent;
    color: var(--text);
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--border);
    border-radius: 999px;
    transition: all var(--transition);
}

.btn-load-more:hover {
    border-color: var(--text);
    color: var(--text);
    background: var(--accent-soft);
}

.btn-load-more.hidden {
    display: none;
}

.loading {
    text-align: center;
    padding: 48px;
    color: var(--text-muted);
}

.tools {
    padding: 120px 0;
    background: var(--bg-elev);
}

.tools-grid {
    display: grid;
    gap: 48px;
}

.tool-category h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-muted);
}

.tool-items {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.tool-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    min-width: 100px;
}

.tool-item:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tool-item img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.tool-item span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.contact {
    padding: 120px 0;
}

.contact-layout {
    display: grid;
    gap: 64px;
}

.contact-info h3 {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.8;
}

.contact-channels {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-channels a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    color: var(--text);
}

.contact-channels a:hover {
    border-color: var(--accent);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.contact-channels svg {
    width: 20px;
    height: 20px;
    color: var(--accent);
}

.contact-form-wrapper {
    position: relative;
}

.contact-form {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text);
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-muted);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    padding: 14px 32px;
    background: var(--btn-bg);
    color: var(--on-accent);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    box-shadow: var(--shadow-btn);
}

.btn-submit:hover {
    background: var(--btn-bg-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-btn-hover);
}

.btn-submit.loading .btn-text {
    display: none;
}

.btn-submit.loading .btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-loading {
    display: none;
}

.btn-loading svg {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form-status {
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.footer {
    background: var(--bg-elev);
    border-top: 1px solid var(--border);
    padding: 64px 0 24px;
}

.footer-top {
    display: grid;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-brand .brand {
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--text-muted);
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    transition: all var(--transition);
}

.footer-social a:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links a {
    color: var(--text-muted);
    transition: all var(--transition);
}

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

.footer-contact p {
    color: var(--text-muted);
    margin-bottom: 8px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    gap: 16px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.btn-top {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    transition: all var(--transition);
}

.btn-top:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-4px);
}

.btn-top svg {
    width: 20px;
    height: 20px;
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-layout {
        grid-template-columns: 1fr 1fr;
    }

    .footer-top {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1023px) {
    .navbar-island {
        max-width: min(100% - 24px, 420px);
    }

    .island-content {
        padding: 10px 16px;
        gap: 12px;
    }

    .brand {
        font-size: 1.0625rem;
        min-width: 0;
    }

    .brand-text {
        white-space: nowrap;
    }

    .nav-actions {
        gap: 0;
        flex-shrink: 0;
    }
}

@media (min-width: 1024px) {
    .nav-links.desktop {
        display: flex;
    }

    .nav-links.mobile {
        display: none !important;
        pointer-events: none;
    }

    .nav-mobile-only {
        display: none;
    }

    .nav-desktop-only {
        display: flex;
    }

    .btn-cv.nav-desktop-only {
        display: inline-flex;
    }

    .hero-headline {
        font-size: 3.5rem;
    }

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

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