/* --- TOKENS --- */
    :root {
        --ink: #071B30;
        --ink-deep: #04121F;
        --panel: rgba(234, 242, 251, 0.035);
        --line: #EAF2FB;
        --line-dim: rgba(234, 242, 251, 0.16);
        --line-dimmer: rgba(234, 242, 251, 0.07);
        --brass: #C9A227;
        --brass-soft: rgba(201, 162, 39, 0.14);
        --muted: #8FA7C2;
        --white: #F7FAFD;
        --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    body {
        background-color: var(--ink);
        color: var(--white);
        font-family: 'Inter', sans-serif;
        overflow-x: hidden;
        background-image:
            linear-gradient(var(--line-dimmer) 1px, transparent 1px),
            linear-gradient(90deg, var(--line-dimmer) 1px, transparent 1px);
        background-size: 42px 42px;
    }

    ::-webkit-scrollbar { width: 10px; }
    ::-webkit-scrollbar-track { background: var(--ink); }
    ::-webkit-scrollbar-thumb { background: var(--brass); border-radius: 5px; }

    :focus-visible { outline: 2px solid var(--brass); outline-offset: 3px; }

    /* --- NAVBAR --- */
    nav {
        position: fixed;
        top: 0; left: 0; width: 100%;
        padding: 20px 5%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
        transition: var(--transition);
        border-bottom: 1px solid transparent;
    }

    nav.scrolled {
        background: rgba(4, 18, 31, 0.85);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid var(--line-dim);
        padding: 13px 5%;
    }

    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
    }
    .logo .mark {
        width: 38px; height: 38px;
        border: 1.5px solid var(--brass);
        border-radius: 4px;
        display: flex; align-items: center; justify-content: center;
        font-family: 'Space Grotesk', sans-serif;
        font-weight: 700; font-size: .95rem; color: var(--brass);
        position: relative;
    }
    .logo .mark::before, .logo .mark::after {
        content: ''; position: absolute; width: 5px; height: 5px;
        border: 1px solid var(--brass); opacity: .7;
    }
    .logo .mark::before { top: -3px; left: -3px; border-width: 1px 0 0 1px; }
    .logo .mark::after { bottom: -3px; right: -3px; border-width: 0 1px 1px 0; }
    .logo .tag {
        font-family: 'IBM Plex Mono', monospace;
        font-size: .62rem; letter-spacing: 2px; text-transform: uppercase; color: var(--muted);
    }

    .nav-links { display: flex; gap: 35px; list-style: none; }
    .nav-links a {
        color: var(--white); text-decoration: none; font-size: .92rem; font-weight: 500;
        position: relative; transition: var(--transition);
        font-family: 'IBM Plex Mono', monospace; letter-spacing: .5px;
    }
    .nav-links a::before { content: '· '; color: var(--brass); }
    .nav-links a:hover { color: var(--brass); }

    /* --- SHEET LABEL / SECTION TITLES --- */
    section { padding: 130px 10% 100px; position: relative; }
    .sheet-tag {
        display: inline-flex; align-items: center; gap: 8px;
        font-family: 'IBM Plex Mono', monospace; font-size: .72rem; letter-spacing: 3px;
        text-transform: uppercase; color: var(--brass); margin-bottom: 16px;
    }
    .sheet-tag::before { content: ''; width: 22px; height: 1px; background: var(--brass); }

    .section-header { margin-bottom: 64px; }
    .section-title {
        font-size: 2.3rem; font-family: 'Space Grotesk', sans-serif; font-weight: 600;
        display: inline-block; position: relative; padding-bottom: 22px; color: var(--white);
    }
    .section-title .dim-line {
        position: absolute; bottom: 0; left: 0; display: flex; align-items: center;
        width: 0; transition: width 1s cubic-bezier(.4,0,.2,1);
    }
    .fade-in.appear .section-title .dim-line { width: 100%; max-width: 220px; }
    .section-title .dim-line .tick { width: 1px; height: 10px; background: var(--brass); flex-shrink: 0; }
    .section-title .dim-line .bar { flex: 1; height: 1px; background: var(--brass); }

    /* --- HERO --- */
    #hero {
        min-height: 100vh; display: flex; align-items: center;
        padding: 110px 10% 60px; position: relative;
    }
    .hero-container {
        display: flex; align-items: center; justify-content: space-between;
        width: 100%; gap: 60px; z-index: 2;
    }
    .hero-content { flex: 1; max-width: 620px; }

    .badge {
        display: inline-flex; align-items: center; gap: 10px;
        padding: 8px 16px; background: var(--brass-soft);
        border: 1px solid rgba(201, 162, 39, 0.35); border-radius: 3px;
        color: var(--brass); font-size: .8rem; margin-bottom: 26px;
        letter-spacing: 1.5px; text-transform: uppercase;
        font-family: 'IBM Plex Mono', monospace;
    }

    .hero-content h1 {
        font-family: 'Space Grotesk', sans-serif;
        font-size: 3.4rem; font-weight: 600; line-height: 1.14; margin-bottom: 22px; color: var(--white);
    }
    .typing-text { color: var(--brass); display: inline-block; min-height: 1.2em; }
    .cursor { display: inline-block; width: 3px; background-color: var(--brass); margin-left: 5px; animation: blink 1s infinite; }
    @keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

    .hero-content p {
        font-size: 1.08rem; color: var(--muted); margin-bottom: 44px; max-width: 560px; line-height: 1.75;
    }

    .btn-group { display: flex; gap: 18px; margin-bottom: 46px; flex-wrap: wrap; }
    .btn {
        padding: 15px 30px; border-radius: 3px; font-weight: 600; text-decoration: none;
        transition: var(--transition); display: flex; align-items: center; gap: 10px;
        font-size: .92rem;
    }
    .btn-primary {
        background: var(--brass); color: var(--ink-deep);
        box-shadow: 0 10px 26px rgba(201, 162, 39, 0.18);
    }
    .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 15px 30px rgba(201, 162, 39, 0.3); }
    .btn-outline {
        background: transparent; color: var(--white); border: 1px solid var(--line-dim);
    }
    .btn-outline:hover { background: rgba(255,255,255,.04); border-color: var(--brass); color: var(--brass); }

    /* Title-block strip, mimicking an architectural drawing's info bar */
    .title-block {
        display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--line-dim);
        border-radius: 3px; overflow: hidden; max-width: 560px;
        font-family: 'IBM Plex Mono', monospace;
    }
    .title-block div {
        padding: 12px 18px; border-right: 1px solid var(--line-dim); flex: 1; min-width: 110px;
    }
    .title-block div:last-child { border-right: none; }
    .title-block span { display: block; font-size: .62rem; letter-spacing: 1.5px; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; }
    .title-block strong { font-size: .82rem; color: var(--brass); font-weight: 500; }

    /* --- HERO IMAGE ("pinned document" treatment) --- */
    .hero-image-wrapper { flex: 1; display: flex; justify-content: flex-end; position: relative; }
    .hero-image-glow {
        position: absolute; width: 320px; height: 420px;
        background: radial-gradient(circle, rgba(201,162,39,.35), transparent 70%);
        filter: blur(70px); opacity: .5; z-index: 1; top: 50%; transform: translateY(-50%);
        animation: pulseGlow 4s infinite alternate;
    }
    @keyframes pulseGlow { 0% { opacity: .3; } 100% { opacity: .55; } }

    .hero-image {
        width: 100%; max-width: 380px; aspect-ratio: 3/4;
        background: var(--panel); border: 1px solid var(--line-dim); border-radius: 4px;
        overflow: hidden; position: relative; z-index: 2;
        box-shadow: 0 25px 60px rgba(0,0,0,.5); transition: var(--transition);
        transform: rotate(1.2deg);
    }
    .hero-image::before, .hero-image::after {
        content: ''; position: absolute; width: 9px; height: 9px; border: 1.5px solid var(--brass);
        z-index: 3; opacity: .8;
    }
    .hero-image::before { top: 10px; left: 10px; border-width: 1.5px 0 0 1.5px; }
    .hero-image::after { bottom: 10px; right: 10px; border-width: 0 1.5px 1.5px 0; }
    .hero-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; filter: saturate(.9) contrast(1.05); }
    .hero-image:hover { transform: rotate(0deg) translateY(-8px); border-color: rgba(201,162,39,.5); }
    .hero-image:hover img { transform: scale(1.04); }
    .img-fallback {
        width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center;
        gap: 12px; color: var(--muted); background: var(--panel);
    }
    .img-fallback i { font-size: 2.4rem; color: var(--brass); }
    .img-fallback span { font-family: 'IBM Plex Mono', monospace; font-size: .68rem; letter-spacing: 1.5px; text-transform: uppercase; }

    /* --- ABOUT --- */
    .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
    .about-text p { font-size: 1.05rem; color: var(--muted); margin-bottom: 20px; line-height: 1.85; }
    .about-text strong { color: var(--brass); font-weight: 600; }

    .about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
    .stat-card {
        background: var(--panel); border: 1px solid var(--line-dim); padding: 28px;
        border-radius: 4px; transition: var(--transition); position: relative;
    }
    .stat-card::before {
        content: attr(data-idx); position: absolute; top: 12px; right: 14px;
        font-family: 'IBM Plex Mono', monospace; font-size: .62rem; color: var(--line-dim); letter-spacing: 1px;
    }
    .stat-card:hover { transform: translateY(-5px); border-color: rgba(201,162,39,.35); box-shadow: 0 10px 30px rgba(0,0,0,.4); }
    .stat-card i { font-size: 1.7rem; color: var(--brass); margin-bottom: 14px; display: block; }
    .stat-card h3 { font-size: 1.08rem; margin-bottom: 5px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; }
    .stat-card p { color: var(--muted); font-size: .86rem; }

    /* --- SKILLS --- */
    .skills-container { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 10px; }
    .skill-tag {
        background: var(--panel); border: 1px solid var(--line-dim); padding: 12px 22px;
        border-radius: 3px; font-size: .92rem; display: flex; align-items: center; gap: 10px;
        transition: var(--transition); cursor: default;
    }
    .skill-tag i { color: var(--brass); }
    .skill-tag:hover { background: var(--brass-soft); border-color: var(--brass); transform: translateY(-2px); }

    /* --- PORTFOLIO ("drawing sheets") --- */
    .portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 26px; }
    .project-card {
        position: relative; border-radius: 4px; background: var(--panel);
        border: 1px solid var(--line-dim); transition: var(--transition); overflow: hidden;
    }
    .project-card::before {
        content: ''; position: absolute; top: 0; right: 0; width: 0; height: 0;
        border-style: solid; border-width: 0 26px 26px 0; border-color: transparent var(--ink) transparent transparent;
        z-index: 2;
    }
    .project-card::after {
        content: ''; position: absolute; top: 0; right: 0; width: 26px; height: 26px;
        border-left: 1px solid var(--line-dim); border-bottom: 1px solid var(--line-dim);
    }
    .project-head {
        display: flex; align-items: center; justify-content: space-between;
        padding: 18px 22px; border-bottom: 1px solid var(--line-dim);
        font-family: 'IBM Plex Mono', monospace; font-size: .68rem; letter-spacing: 1.5px;
        text-transform: uppercase; color: var(--muted);
    }
    .project-head .no { color: var(--brass); }
    .project-img {
        width: 100%; height: 150px; display: flex; align-items: center; justify-content: center;
        position: relative; border-bottom: 1px solid var(--line-dim);
        background-image: linear-gradient(var(--line-dimmer) 1px, transparent 1px),
                           linear-gradient(90deg, var(--line-dimmer) 1px, transparent 1px);
        background-size: 18px 18px;
    }
    .project-img i {
        font-size: 1.7rem; width: 62px; height: 62px; display: flex; align-items: center; justify-content: center;
        border-radius: 50%; background: var(--ink); border: 1px solid var(--line-dim); color: var(--brass);
        transition: var(--transition);
    }
    .project-card:hover .project-img i { background: var(--brass); color: var(--ink-deep); border-color: var(--brass); }
    .project-card:hover { border-color: rgba(201,162,39,.35); transform: translateY(-6px); box-shadow: 0 18px 36px rgba(0,0,0,.35); }

    .project-content { padding: 24px 22px; }
    .project-content h3 { font-size: 1.22rem; margin-bottom: 10px; font-family: 'Space Grotesk', sans-serif; font-weight: 600; }
    .project-content p { color: var(--muted); font-size: .92rem; margin-bottom: 20px; line-height: 1.6; }
    .project-links a {
        color: var(--brass); text-decoration: none; font-weight: 600; font-size: .9rem;
        display: inline-flex; align-items: center; gap: 6px; transition: var(--transition);
        font-family: 'IBM Plex Mono', monospace;
    }
    .project-links a:hover { gap: 12px; }

    /* --- CONTACT --- */
    #contact .contact-box {
        background: var(--panel); border: 1px solid var(--line-dim); padding: 56px 50px;
        border-radius: 4px; text-align: center; position: relative;
    }
    .stamp {
        position: absolute; top: 24px; right: 30px; width: 74px; height: 74px;
        border: 2px solid var(--brass); border-radius: 50%; opacity: .6;
        display: flex; align-items: center; justify-content: center; transform: rotate(-14deg);
    }
    .stamp span {
        font-family: 'IBM Plex Mono', monospace; font-size: .55rem; letter-spacing: 1px; color: var(--brass);
        text-align: center; text-transform: uppercase; line-height: 1.3;
    }
    @media (max-width: 560px) { .stamp { display: none; } }

    .social-links { display: flex; justify-content: center; gap: 18px; margin-top: 34px; }
    .social-links a {
        width: 50px; height: 50px; border-radius: 3px; background: rgba(255,255,255,.03);
        display: flex; align-items: center; justify-content: center; color: var(--white);
        font-size: 1.1rem; transition: var(--transition); text-decoration: none; border: 1px solid var(--line-dim);
    }
    .social-links a:hover { background: var(--brass); color: var(--ink-deep); border-color: var(--brass); transform: translateY(-4px); }

    footer.site-foot {
        text-align: center; padding: 36px 20px; border-top: 1px solid var(--line-dimmer);
        font-family: 'IBM Plex Mono', monospace; font-size: .72rem; color: var(--muted); letter-spacing: .5px;
    }

    /* --- SCROLL FADE --- */
    .fade-in { opacity: 0; transform: translateY(36px); transition: opacity .8s ease-out, transform .8s ease-out; }
    .fade-in.appear { opacity: 1; transform: translateY(0); }

    /* --- RESPONSIVE --- */
    @media (max-width: 992px) {
        .about-grid { grid-template-columns: 1fr; }
        .hero-content h1 { font-size: 2.7rem; }
        .hero-container { flex-direction: column-reverse; text-align: center; gap: 44px; }
        .hero-content { display: flex; flex-direction: column; align-items: center; }
        .hero-image-wrapper { justify-content: center; }
        .hero-image { max-width: 300px; }
        .btn-group, .title-block { justify-content: center; }
    }
    @media (max-width: 768px) {
        nav { padding: 15px 5%; flex-direction: column; gap: 12px; background: var(--ink-deep); }
        .nav-links { gap: 18px; flex-wrap: wrap; justify-content: center; }
        .hero-content h1 { font-size: 2.2rem; }
        .btn-group { flex-direction: column; width: 100%; }
        section { padding: 90px 6% 70px; }
    }