:root {
    --bg: #0b1221;
    --panel: rgba(255, 255, 255, 0.04);
    --card: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #7dd3fc;
    --accent-2: #a855f7;
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', system-ui, -apple-system, sans-serif;
    line-height: 1.7;
    letter-spacing: 0.01em;
}

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

h1, h2, h3, h4 {
    margin: 0;
    color: #f8fafc;
    font-family: 'Space Grotesk', 'DM Sans', system-ui, sans-serif;
    letter-spacing: -0.02em;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 3vw, 2rem) 4rem;
}

section {
    padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem clamp(1.25rem, 3vw, 2rem);
    backdrop-filter: blur(14px);
    background: linear-gradient(120deg, rgba(14, 22, 36, 0.9), rgba(11, 18, 33, 0.8));
    border-bottom: 1px solid var(--border);
}

.nav__brand {
    font-weight: 700;
    letter-spacing: -0.01em;
    font-size: 1.1rem;
}

.nav__links {
    display: flex;
    gap: 1rem;
    align-items: center;
    font-weight: 500;
}

.nav__links a {
    position: relative;
    padding: 0.35rem 0.6rem;
    color: var(--muted);
    transition: color 0.2s ease;
}

.nav__links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

.nav__links a:hover {
    color: #f1f5f9;
}

.nav__links a:hover::after {
    transform: scaleX(1);
}

.nav__cta {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #0b1221;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    font-weight: 700;
    box-shadow: 0 10px 30px rgba(168, 85, 247, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav__cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 36px rgba(109, 212, 252, 0.35);
}

.nav.nav-scrolled {
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
    background: linear-gradient(120deg, rgba(11, 18, 33, 0.95), rgba(14, 22, 36, 0.92));
}

.hero {
    padding-top: clamp(2rem, 6vw, 4rem);
    position: relative;
    overflow: hidden;
    /*background: linear-gradient(135deg, #0b1221 0%, #0e182c 55%, #0d1024 100%);*/
}

.hero::before {
    content: '';
    position: absolute;
    inset: -50% -40%;
    /*background:
        radial-gradient(circle at 25% 35%, rgba(109, 212, 252, 0.06), transparent 48%),
        radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.05), transparent 44%);
    */
        filter: blur(10px);
    pointer-events: none;
    z-index: 0;
}

.hero > * {
    position: relative;
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 120 120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'%3E%3C/feTurbulence%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.25'/%3E%3C/svg%3E");
    opacity: 0.04;
    pointer-events: none;
    z-index: 0;
}

.hero__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: clamp(2rem, 5vw, 3.5rem);
    align-items: center;
}

.hero__text h1 {
    font-size: clamp(2.75rem, 5vw, 3.5rem);
    margin: 0.35rem 0 0.5rem;
}

.hero__text h1 span {
    color: var(--accent);
}

.hero__text .lede {
    color: var(--muted);
    max-width: 640px;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.8rem;
    color: var(--muted);
}

.lede {
    font-size: 1.05rem;
}

.hero__actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin: 1.5rem 0 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.75rem 1.15rem;
    border-radius: 12px;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #0b1221;
    box-shadow: 0 14px 35px rgba(109, 212, 252, 0.3);
}

.btn-ghost {
    border-color: var(--border);
    background: transparent;
    color: var(--text);
}

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

.btn-primary:hover {
    box-shadow: 0 18px 42px rgba(168, 85, 247, 0.35);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.04);
}

.hero__social {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--muted);
    margin-top: 0.75rem;
}

.hero__social a {
    font-size: 1.3rem;
    color: #e2e8f0;
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: var(--card);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, background 0.2s ease;
}

.hero__social a:hover {
    transform: translateY(-2px);
    background: rgba(109, 212, 252, 0.1);
}

.status-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.45rem 0.65rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(109, 212, 252, 0.08);
    color: #cbd5e1;
    font-weight: 600;
}

.status-chip .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 6px rgba(109, 212, 252, 0.2);
}

.hero__card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 1.2rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    display: grid;
    gap: 1rem;
    justify-items: center;
}

.hero__card img {
    width: 100%;
    max-width: 320px;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.4);
}

.hero__meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
    width: 100%;
}

.meta-label {
    margin: 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.meta-value {
    margin: 0.1rem 0 0;
    font-weight: 700;
}

.section-header {
    max-width: 780px;
    margin-bottom: 2rem;
}

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

.about-card {
    padding: 1.4rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
    color: #dbeafe;
}

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

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.project {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    display: grid;
    grid-template-rows: auto 1fr;
}

.project:hover {
    transform: translateY(-6px) rotateX(1deg);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.45);
}

.project-image {
    height: 240px;
    overflow: hidden;
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}

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

.project-body {
    padding: 1.25rem 1.3rem 1.4rem;
    display: grid;
    gap: 0.75rem;
}

.project-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.project-meta span {
    padding: 0.35rem 0.55rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.04);
}

.project p {
    margin: 0;
    color: var(--muted);
}

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

.project-tags span {
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    background: rgba(109, 212, 252, 0.08);
    color: #cbd5e1;
    border: 1px solid rgba(109, 212, 252, 0.2);
    font-weight: 600;
    font-size: 0.9rem;
}

.project-links {
    display: flex;
    gap: 0.6rem;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1.2rem;
}

.skill-chip {
    padding: 0.65rem 0.9rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: #e2e8f0;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.skill-chip:hover {
    transform: translateY(-2px);
    border-color: rgba(109, 212, 252, 0.6);
    background: rgba(109, 212, 252, 0.06);
}

.skill-chip.active {
    border-color: rgba(109, 212, 252, 0.8);
    background: rgba(109, 212, 252, 0.12);
    color: #e0f2fe;
}

.skill-panel {
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    padding: 0 1rem;
    border-radius: 12px;
    border: 1px solid transparent;
    background: transparent;
    transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.skill-panel.active {
    max-height: 400px;
    opacity: 1;
    padding: 1rem 1.1rem;
    border-color: var(--border);
    background: var(--panel);
}

.skill-panel h3 {
    margin-bottom: 0.4rem;
}

.skill-panel ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.4rem;
}

.skill-panel li {
    color: var(--muted);
}

.skill-panel li span {
    color: #e2e8f0;
    font-weight: 700;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.contact-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.4rem;
    box-shadow: var(--shadow);
    display: grid;
    gap: 1rem;
}

.contact-item {
    display: flex;
    gap: 0.9rem;
    align-items: center;
}

.contact-item i {
    color: var(--accent);
    font-size: 1.2rem;
}

.contact-social {
    display: flex;
    gap: 0.8rem;
}

.contact-social a {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    border-radius: 12px;
    background: var(--panel);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, background 0.2s ease;
}

.contact-social a:hover {
    transform: translateY(-2px);
    background: rgba(109, 212, 252, 0.08);
}

.contact-form {
    display: grid;
    gap: 0.75rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.4rem;
    box-shadow: var(--shadow);
}

.contact-form label {
    font-weight: 700;
    color: #e2e8f0;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.85rem 0.95rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text);
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form textarea {
    min-height: 140px;
    resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: rgba(109, 212, 252, 0.8);
    box-shadow: 0 0 0 4px rgba(109, 212, 252, 0.15);
}

.contact-form button {
    border: none;
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    padding: 0.9rem 1.1rem;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #0b1221;
    box-shadow: 0 16px 40px rgba(109, 212, 252, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 50px rgba(168, 85, 247, 0.35);
}

footer {
    text-align: center;
    color: var(--muted);
    padding: 2rem 1rem 3rem;
    border-top: 1px solid var(--border);
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.02));
}

.section-animate {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 800px) {
    .nav {
        position: sticky;
    }

    .nav__links {
        display: none;
    }

    main {
        padding: 0 1.1rem 3rem;
    }

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

    .hero__text {
        text-align: left;
    }

    /* On smaller devices the reveal animation can leave content hidden if JS doesn't run
       or intersection thresholds aren't met. Ensure sections are visible by default. */
    .section-animate {
        opacity: 1;
        transform: none;
    }
}

@media (max-width: 600px) {
    .nav {
        padding: 0.9rem 1rem;
    }

    .nav__cta {
        padding: 0.5rem 0.85rem;
    }

    .hero__social {
        flex-wrap: wrap;
    }

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

    .project-image {
        height: 200px;
    }

    .hero__meta {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
}