/* ── Variables ── */
:root {
    --bg:           #0e0d12;
    --bg-subtle:    #141219;
    --bg-card:      #1a1720;
    --border:       #272335;
    --text:         #cdc8da;
    --text-muted:   #6e6880;
    --text-dim:     #443f55;
    --heading:      #ede8f8;

    /* Lilac — primary accent */
    --accent:       #b899d4;
    --accent-dim:   #2a1f40;

    /* Cool lavender — secondary, used sparingly */
    --lavender:     #8fa4e8;
    --lavender-dim: #1a2140;

    /* Warm lilac — for highlights */
    --accent-warm:  #d4a0c8;

    --code-bg:      #110f18;

    --font-sans:    'IBM Plex Sans', sans-serif;
    --font-mono:    'IBM Plex Mono', monospace;
    --font-serif:   'IBM Plex Serif', serif;

    --max-w:        1100px;
    --max-w-text:   720px;
    --nav-h:        60px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-weight: 300;
    font-size: 1rem;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
main { flex: 1; }
img  { max-width: 100%; display: block; }
a    { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
    font-family: var(--font-mono);
    font-size: .84em;
    background: var(--code-bg);
    color: var(--accent-warm);
    padding: .12em .4em;
    border-radius: 2px;
}

/* ── Nav ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--nav-h);
    background: rgba(14, 13, 18, 0.93);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 2rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}
.site-logo {
    font-family: var(--font-mono);
    font-size: .95rem;
    font-weight: 500;
    color: var(--heading);
    letter-spacing: -.02em;
    text-decoration: none;
    flex-shrink: 0;
}
.site-logo:hover { color: var(--accent); text-decoration: none; }
.logo-mark { color: var(--accent); margin-right: .15em; }

.nav-links {
    display: flex;
    align-items: stretch;
    gap: 0;
    position: relative;
    height: 100%;
}
.nav-indicator {
    position: absolute;
    bottom: 0;
    height: 2px;
    width: 0;
    background: var(--accent);
    border-radius: 2px 2px 0 0;
    opacity: 0;
    pointer-events: none;
    transition: transform .25s cubic-bezier(.4,0,.2,1),
                width    .25s cubic-bezier(.4,0,.2,1),
                opacity  .18s;
}
.nav-link {
    font-family: var(--font-mono);
    font-size: .78rem;
    color: var(--text-muted);
    text-decoration: none;
    text-transform: lowercase;
    letter-spacing: .05em;
    padding: 0 .9rem;
    height: 100%;
    display: flex;
    align-items: center;
    transition: color .18s;
    white-space: nowrap;
}
.nav-link:hover  { color: var(--heading); text-decoration: none; }

/* Portfolio CTA in nav */
.nav-link--cta {
    color: var(--accent);
    border: 1px solid var(--accent-dim);
    border-radius: 3px;
    margin-left: .5rem;
    padding: 0 .9rem;
    transition: background .18s, color .18s;
}
.nav-link--cta:hover {
    background: var(--accent-dim);
    color: var(--accent);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: .4rem;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text-muted);
    border-radius: 2px;
    transition: transform .22s ease, opacity .18s, width .18s;
    transform-origin: center;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; width: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Hero ── */
.hero {
    padding: 6rem 2rem 5rem;
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -120px; left: -80px;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(184,153,212,.07) 0%, transparent 70%);
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -100px; right: -60px;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(143,164,232,.05) 0%, transparent 70%);
    pointer-events: none;
}
.hero-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: 4rem;
    align-items: center;
}
.hero-handles {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: 1rem;
}
.handle {
    font-family: var(--font-mono);
    font-size: .8rem;
    color: var(--accent);
    letter-spacing: .06em;
}
.handle-sep {
    font-family: var(--font-mono);
    color: var(--text-dim);
    font-size: .8rem;
}
.hero-text h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    font-weight: 300;
    color: var(--heading);
    line-height: 1.15;
    letter-spacing: -.03em;
    margin-bottom: 1.1rem;
}
.hero-tagline {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.8;
    max-width: 520px;
    margin-bottom: 2rem;
}
.hero-links {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn-primary {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 500;
    letter-spacing: .04em;
    background: var(--accent);
    color: #0e0d12;
    padding: .6rem 1.4rem;
    border-radius: 3px;
    text-decoration: none;
    display: inline-block;
    transition: background .18s;
}
.btn-primary:hover { background: var(--accent-warm); text-decoration: none; color: #0e0d12; }
.btn-primary--large { padding: .8rem 2rem; font-size: .88rem; }

.btn-ghost {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 400;
    letter-spacing: .04em;
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: .6rem 1.2rem;
    border-radius: 3px;
    text-decoration: none;
    display: inline-block;
    transition: border-color .18s, color .18s;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

/* Hero avatar */
.hero-avatar-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}
.hero-avatar-ring {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--border);
    position: relative;
    z-index: 1;
    box-shadow: 0 0 0 6px var(--accent-dim),
                0 0 0 7px var(--border);
}
.hero-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.hero-avatar-deco {
    position: absolute;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    border: 1px dashed var(--accent-dim);
    animation: spin-slow 24s linear infinite;
    z-index: 0;
}
.hero-avatar-deco::before {
    content: '';
    position: absolute;
    top: -4px; left: 50%;
    width: 8px; height: 8px;
    background: var(--accent);
    border-radius: 50%;
    transform: translateX(-50%);
}
@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* ── Sections ── */
.section {
    border-bottom: 1px solid var(--border);
    padding: 4.5rem 2rem;
}
.section:last-of-type { border-bottom: none; }
.section-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 3.5rem;
    align-items: start;
}
.section-label {
    font-family: var(--font-mono);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--text-dim);
    padding-top: .4rem;
    position: sticky;
    top: calc(var(--nav-h) + 1.5rem);
}
.section-heading {
    font-family: var(--font-serif);
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 300;
    color: var(--heading);
    letter-spacing: -.02em;
    line-height: 1.25;
    margin-bottom: 1.5rem;
}
.section-body p {
    color: var(--text-muted);
    margin-bottom: 1.1rem;
    line-height: 1.85;
    max-width: 640px;
}
.section-body p:last-child { margin-bottom: 0; }

/* About specifics */
.about-lead {
    font-family: var(--font-serif);
    font-size: 1.2rem !important;
    font-weight: 300;
    color: var(--heading) !important;
    font-style: italic;
    margin-bottom: 1.5rem !important;
}

/* ── Vision grid ── */
.vision-lead {
    margin-bottom: 2rem !important;
}
.vision-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-top: .5rem;
}
.vision-card {
    background: var(--bg-card);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: .6rem;
}
.vision-card-icon {
    font-size: 1.2rem;
    color: var(--lavender);
    margin-bottom: .2rem;
}
.vision-card h3 {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 500;
    color: var(--heading);
    text-transform: uppercase;
    letter-spacing: .08em;
}
.vision-card p {
    font-size: .86rem !important;
    line-height: 1.7;
    max-width: none !important;
    color: var(--text-muted);
    margin-bottom: 0 !important;
}

/* ── Work list ── */
.work-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.work-item {
    padding: 1.75rem 0;
    border-bottom: 1px solid var(--border);
}
.work-item:first-child { padding-top: 0; }
.work-item:last-child  { border-bottom: none; padding-bottom: 0; }
.work-item--featured {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 1.75rem;
    margin-bottom: 1px;
}
.work-item-header {
    display: flex;
    align-items: center;
    gap: .75rem;
    flex-wrap: wrap;
    margin-bottom: .9rem;
}
.work-item h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 300;
    color: var(--heading);
    letter-spacing: -.01em;
}
.work-item p {
    font-size: .9rem;
    color: var(--text-muted);
    line-height: 1.75;
    max-width: 600px;
    margin-bottom: .75rem;
}
.work-item p:last-of-type { margin-bottom: .9rem; }

.work-badge {
    font-family: var(--font-mono);
    font-size: .68rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .1em;
    padding: .18em .6em;
    border-radius: 2px;
    background: var(--accent-dim);
    color: var(--accent);
    white-space: nowrap;
}
.work-badge--upstream {
    background: var(--lavender-dim);
    color: var(--lavender);
}
.work-badge--src {
    background: color-mix(in srgb, var(--accent-warm) 15%, transparent);
    color: var(--accent-warm);
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
}
.work-tag {
    font-family: var(--font-mono);
    font-size: .68rem;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: .1em .55em;
    border-radius: 2px;
}

/* ── Method grid ── */
.method-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: .5rem;
}
.method-item {
    display: flex;
    flex-direction: column;
    gap: .5rem;
}
.method-num {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--lavender);
    letter-spacing: .1em;
}
.method-item h3 {
    font-family: var(--font-sans);
    font-size: .92rem;
    font-weight: 600;
    color: var(--heading);
}
.method-item p {
    font-size: .88rem;
    color: var(--text-muted);
    line-height: 1.75;
}

/* ── Portfolio CTA ── */
.cta-section {
    background: var(--bg-subtle);
    border-bottom: none;
}
.cta-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    flex-wrap: wrap;
}
.cta-text h2 {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    font-weight: 300;
    color: var(--heading);
    letter-spacing: -.02em;
    margin-bottom: .6rem;
}
.cta-text p {
    font-size: .92rem;
    color: var(--text-muted);
    max-width: 520px;
    line-height: 1.75;
}

/* ── Footer ── */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 1.75rem 2rem;
    background: var(--bg-subtle);
}
.footer-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer-left {
    display: flex;
    flex-direction: column;
    gap: .2rem;
}
.footer-name {
    font-family: var(--font-serif);
    font-size: .9rem;
    font-weight: 300;
    color: var(--heading);
}
.footer-handles {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--text-dim);
    letter-spacing: .06em;
}
.footer-nav {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.footer-nav a {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--text-dim);
    text-transform: lowercase;
    letter-spacing: .06em;
}
.footer-nav a:hover { color: var(--accent); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 900px) {
    .hero-inner    { grid-template-columns: 1fr; }
    .hero-avatar-wrap { display: none; }
    .section-inner { grid-template-columns: 1fr; gap: 1.25rem; }
    .section-label { position: static; }
    .vision-grid   { grid-template-columns: 1fr; }
    .method-grid   { grid-template-columns: 1fr; }
    .cta-inner     { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    .footer-inner { flex-direction: column; align-items: flex-start; }

    .nav-toggle { display: flex; }
    .nav-links {
        position: absolute;
        top: var(--nav-h);
        left: 0; right: 0;
        height: auto;
        flex-direction: column;
        background: rgba(14, 13, 18, 0.97);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(12px);
        overflow: hidden;
        max-height: 0;
        opacity: 0;
        transition: max-height .32s cubic-bezier(.4,0,.2,1),
                    opacity    .24s ease;
        pointer-events: none;
    }
    .nav-links.open {
        max-height: 400px;
        opacity: 1;
        pointer-events: auto;
    }
    .nav-indicator { display: none; }
    .nav-link {
        height: auto;
        padding: .8rem 2rem;
        border-bottom: 1px solid var(--border);
        font-size: .85rem;
    }
    .nav-link--cta {
        margin: .5rem 1rem;
        border-radius: 3px;
        justify-content: center;
    }
    .nav-link:last-child { border-bottom: none; }
}