:root {
    --bg: #0b0d10;
    --bg-alt: #101317;
    --card: #14171c;
    --border: #23272e;
    --text: #e7e9ec;
    --text-dim: #9aa2ad;
    --accent: #5eead4;
    --accent-dim: #1f6f63;
    --mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

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

h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; margin: 0 0 16px; }
h1 { font-size: clamp(2rem, 4vw, 3.4rem); line-height: 1.15; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); }
h3 { font-size: 1.15rem; }
p { color: var(--text-dim); margin: 0 0 12px; text-align: justify; text-justify: inter-word; }

.section-label {
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 10px;
}
.section-intro { max-width: 640px; }

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(11,13,16,0.9);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--border);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}
.logo {
    font-family: var(--mono);
    font-weight: 700;
    font-size: 1.05rem;
}
.logo span { color: var(--accent); }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 0.9rem; }
.site-nav a:hover { color: var(--accent); }
.nav-cta {
    border: 1px solid var(--accent-dim);
    padding: 8px 16px;
    border-radius: 4px;
    color: var(--accent) !important;
}
.nav-cta:hover { background: var(--accent-dim); color: var(--text) !important; }

/* Hero */
.hero { padding: 110px 0 90px; border-bottom: 1px solid var(--border); }
.eyebrow {
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 20px;
}
.hero-sub { max-width: 680px; font-size: 1.05rem; }
.hero-actions { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

.btn {
    display: inline-block;
    padding: 13px 26px;
    border-radius: 4px;
    font-size: 0.92rem;
    font-weight: 600;
    font-family: var(--mono);
}
.btn-primary { background: var(--accent); color: #05221d; }
.btn-primary:hover { background: #7ff0da; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* Thesis */
.thesis { padding: 90px 0; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.thesis-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px; }
.thesis-grid h2 { max-width: 360px; }

/* Engines */
.engines { padding: 90px 0; border-bottom: 1px solid var(--border); }
.engine-list { display: grid; gap: 1px; background: var(--border); margin-top: 40px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.engine-card {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 24px;
    background: var(--card);
    padding: 32px;
    transition: background 0.15s ease;
}
.engine-card:hover { background: #191d23; }
.engine-link {
    display: inline-block;
    margin-top: 6px;
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--accent);
}
.engine-num {
    font-family: var(--mono);
    font-size: 1.6rem;
    color: var(--accent-dim);
    font-weight: 700;
}
.engine-tag {
    font-family: var(--mono);
    color: var(--accent);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

/* Framework */
.framework { padding: 90px 0; border-bottom: 1px solid var(--border); background: var(--bg-alt); }
.phase-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.phase-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 28px;
}
.phase-label {
    font-family: var(--mono);
    color: var(--accent);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.outcome {
    margin-top: 40px;
    padding: 24px;
    border-left: 3px solid var(--accent);
    background: var(--card);
    color: var(--text);
    font-size: 1.02rem;
}

/* Work / proof table */
.work { padding: 90px 0; border-bottom: 1px solid var(--border); }
.work-table { width: 100%; border-collapse: collapse; margin-top: 32px; font-size: 0.93rem; }
.work-table th, .work-table td {
    text-align: left;
    padding: 16px;
    border-bottom: 1px solid var(--border);
}
.work-table th {
    font-family: var(--mono);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}
.muted { color: var(--text-dim); font-size: 0.85rem; }
.client-link { color: var(--text); border-bottom: 1px solid transparent; }
.client-link:hover { color: var(--accent); border-bottom-color: var(--accent); }
.client-url { display: inline-block; }
.client-url:hover { color: var(--accent); }

/* Contact details (address / phone / parent entity) */
.contact-details { margin-top: 36px; display: flex; flex-direction: column; gap: 24px; }
.contact-detail-item { padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.contact-detail-item:last-child { border-bottom: none; }
.detail-label {
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.72rem;
    color: var(--text-dim);
    margin-bottom: 6px;
}
.detail-value {
    color: var(--text);
    text-align: left;
    margin-bottom: 0;
    font-size: 0.95rem;
}
.detail-value a { color: var(--text); }
.detail-value a:hover { color: var(--accent); }
.phone-row { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.whatsapp-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(37, 211, 102, 0.12);
    color: #25d366;
    flex-shrink: 0;
}
.whatsapp-link:hover { background: rgba(37, 211, 102, 0.22); color: #25d366; }

/* Contact */
.contact { padding: 90px 0 110px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; }
.scoping-form { display: flex; flex-direction: column; gap: 6px; }
.scoping-form label {
    font-family: var(--mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    margin-top: 14px;
}
.scoping-form input, .scoping-form textarea {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 12px 14px;
    color: var(--text);
    font-family: var(--sans);
    font-size: 0.95rem;
}
.scoping-form input:focus, .scoping-form textarea:focus {
    outline: none;
    border-color: var(--accent);
}
.scoping-form button { margin-top: 24px; align-self: flex-start; cursor: pointer; border: none; }

.alert { padding: 14px 18px; border-radius: 6px; margin-bottom: 20px; font-size: 0.9rem; }
.alert-success { background: rgba(94,234,212,0.1); border: 1px solid var(--accent-dim); color: var(--accent); }
.alert-error { background: rgba(240,94,94,0.08); border: 1px solid #7a3a3a; color: #f0a3a3; }
.alert ul { margin: 0; padding-left: 18px; }

/* Footer */
.site-footer { border-top: 1px solid var(--border); padding: 32px 0; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 20px; font-size: 0.85rem; align-items: flex-start; }
.footer-emails { display: flex; flex-direction: column; gap: 4px; text-align: right; }
.footer-emails a { color: var(--text-dim); font-family: var(--mono); font-size: 0.85rem; }
.footer-emails a:hover { color: var(--accent); }
.email-tag { color: var(--text-dim); font-size: 0.82rem; }

/* Engine detail pages */
.back-link {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--text-dim);
    margin-bottom: 24px;
}
.back-link:hover { color: var(--accent); }

.engine-hero { padding: 90px 0 60px; border-bottom: 1px solid var(--border); }
.engine-lede { max-width: 680px; font-size: 1.05rem; margin-top: 20px; }

.engine-body { padding: 80px 0; border-bottom: 1px solid var(--border); }
.engine-body-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; }

.capability-list { list-style: none; padding: 0; margin: 0 0 32px; }
.capability-list li {
    padding: 14px 0 14px 26px;
    border-bottom: 1px solid var(--border);
    position: relative;
    color: var(--text);
    font-size: 0.95rem;
}
.capability-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-family: var(--mono);
}

.fit-box {
    background: var(--card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 6px;
    padding: 20px 24px;
}
.fit-box p:last-child { color: var(--text); margin-bottom: 0; }

.engine-cta {
    padding: 70px 0;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: var(--bg-alt);
}
.engine-cta h2 { margin-bottom: 24px; }

.engine-pager { padding: 0; }
.engine-pager-inner {
    display: flex;
    justify-content: space-between;
}
.pager-link {
    flex: 1;
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.pager-link:hover { background: var(--card); }
.pager-next { text-align: right; align-items: flex-end; border-left: 1px solid var(--border); }
.pager-label {
    font-family: var(--mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}
.pager-name { font-weight: 600; }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 60;
}
.nav-toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.is-open .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 45;
    opacity: 0;
    transition: opacity 0.2s ease;
}
.nav-overlay.is-open {
    display: block;
    opacity: 1;
}

/* Responsive */
@media (max-width: 860px) {
    .thesis-grid, .contact-grid { grid-template-columns: 1fr; }
    .phase-list { grid-template-columns: 1fr; }
    .engine-card { grid-template-columns: 1fr; }
    .engine-body-grid { grid-template-columns: 1fr; }
    .engine-pager-inner { flex-direction: column; }
    .pager-next { border-left: none; border-top: 1px solid var(--border); text-align: left; align-items: flex-start; }
    .footer-inner { flex-direction: column; }
    .footer-emails { text-align: left; }

    .nav-toggle { display: flex; }

    .site-nav {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(78vw, 320px);
        background: var(--bg-alt);
        border-left: 1px solid var(--border);
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 88px 28px 28px;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        z-index: 50;
        overflow-y: auto;
    }
    .site-nav.is-open { transform: translateX(0); }
    .site-nav a {
        width: 100%;
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
        font-size: 1.02rem;
    }
    .nav-cta {
        margin-top: 16px;
        border-radius: 4px;
        text-align: center;
        border-bottom: 1px solid var(--accent-dim) !important;
    }
}