/* ---------------------------------------------------------------
   Design tokens
   --------------------------------------------------------------- */
:root {
    color-scheme: dark;

    --bg: #05060b;
    --surface: #10131f;
    --surface-2: #161b2c;
    --border: rgba(154, 168, 219, 0.14);
    --border-strong: rgba(154, 168, 219, 0.3);

    --text: #eef1fb;
    --text-muted: #9aa5c7;
    --text-dim: #5c6584;

    --accent-1: #7c5cff;
    --accent-2: #00d9ff;
    --accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));

    --success: #2fe6a0;
    --success-bg: rgba(47, 230, 160, 0.1);
    --success-border: rgba(47, 230, 160, 0.35);
    --danger: #ff6b81;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;

    --shadow-glow: 0 20px 60px -24px rgba(124, 92, 255, 0.45);
    --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 32px -20px rgba(0, 0, 0, 0.6);

    --container: 1200px;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------------------------------------------------------------
   Reset & base
   --------------------------------------------------------------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
}

/* Fixed decorative gradient glow — pure CSS, no images/JS required. */
.bg-decor {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        radial-gradient(600px circle at 15% -10%, rgba(124, 92, 255, 0.25), transparent 60%),
        radial-gradient(500px circle at 100% 10%, rgba(0, 217, 255, 0.16), transparent 60%),
        radial-gradient(700px circle at 50% 120%, rgba(124, 92, 255, 0.14), transparent 60%),
        linear-gradient(
            rgba(154, 168, 219, 0.05) 1px, transparent 1px
        ),
        linear-gradient(90deg, rgba(154, 168, 219, 0.05) 1px, transparent 1px);
    background-size: auto, auto, auto, 64px 64px, 64px 64px;
    mask-image: linear-gradient(180deg, black, black 60%, transparent 100%);
}

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

h1, h2, h3, h4 {
    margin: 0 0 0.5em;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

h1 { font-size: clamp(2.25rem, 4vw + 1rem, 3.5rem); }
h2 { font-size: clamp(1.5rem, 2vw + 1rem, 2.25rem); }
h3 { font-size: 1.125rem; }

p { margin: 0 0 1em; color: var(--text-muted); }

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4em;
    margin: 0 0 0.75em;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent-2);
}

.eyebrow::before {
    content: "";
    width: 0.5em;
    height: 0.5em;
    border-radius: 50%;
    background: var(--accent-gradient);
    box-shadow: 0 0 12px 2px rgba(0, 217, 255, 0.6);
}

main {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem 6rem;
}

section { margin-top: 5rem; }

.section-head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-head h2 { margin: 0; }

.section-link {
    font-weight: 600;
    color: var(--accent-2);
    white-space: nowrap;
}

.section-link:hover { color: var(--text); }

.page-header {
    max-width: 720px;
    margin-top: 3.5rem;
    margin-bottom: 3rem;
}

.page-subtitle {
    font-size: 1.0625rem;
    color: var(--text-muted);
}

/* ---------------------------------------------------------------
   Header / nav
   --------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(5, 6, 11, 0.72);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.2s ease;
}

.site-header.is-scrolled {
    box-shadow: 0 12px 30px -18px rgba(0, 0, 0, 0.8);
}

.header-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 800;
    font-size: 1.0625rem;
    letter-spacing: -0.01em;
    margin-right: auto;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 8px;
    background: var(--accent-gradient);
    color: #05060b;
    font-size: 0.8125rem;
    font-weight: 900;
    letter-spacing: -0.03em;
}

.nav-toggle-input { display: none; }

.nav-toggle-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 2.25rem;
    height: 2.25rem;
    cursor: pointer;
}

.nav-toggle-btn span {
    display: block;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.site-nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    margin: 0;
    padding: 0;
}

.site-nav ul a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color 0.15s ease;
}

.site-nav ul a:hover { color: var(--text); }

.nav-cta { white-space: nowrap; }

/* ---------------------------------------------------------------
   Buttons
   --------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5em;
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.9375rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #05060b;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 24px 70px -20px rgba(124, 92, 255, 0.65);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--border-strong);
    color: var(--text);
}

.btn-ghost:hover {
    border-color: var(--accent-2);
    background: rgba(0, 217, 255, 0.06);
}

.btn-lg { padding: 0.9rem 1.9rem; font-size: 1rem; }
.btn-sm { padding: 0.5rem 1.1rem; font-size: 0.875rem; }

/* ---------------------------------------------------------------
   Hero
   --------------------------------------------------------------- */
.hero {
    margin-top: 4.5rem;
    padding-bottom: 1rem;
}

.hero-inner { max-width: 780px; }

.hero-title { margin-bottom: 0.5em; }

.hero-subtitle {
    font-size: 1.125rem;
    max-width: 60ch;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

/* ---------------------------------------------------------------
   Cards (offerings / cases / posts)
   --------------------------------------------------------------- */
.offering-cards, .case-cards, .post-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.offering-card, .case-card, .post-card {
    position: relative;
    background: linear-gradient(180deg, var(--surface), var(--surface-2));
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    box-shadow: var(--shadow-card);
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.offering-card::before, .case-card::before, .post-card::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.offering-card:hover, .case-card:hover, .post-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-card), 0 0 0 1px rgba(124, 92, 255, 0.15);
}

.offering-card:hover::before, .case-card:hover::before, .post-card:hover::before {
    opacity: 1;
}

.offering-card h3, .case-card h3, .post-card h3 {
    margin-bottom: 0.4em;
    font-size: 1.1875rem;
}

.offering-card h3 a, .case-card h3 a, .post-card h3 a { color: var(--text); }
.offering-card h3 a:hover, .case-card h3 a:hover, .post-card h3 a:hover { color: var(--accent-2); }

.card-index {
    display: block;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--accent-2);
    opacity: 0.8;
    margin-bottom: 1rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    margin-top: 0.75rem;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--accent-2);
}

.card-link span { transition: transform 0.15s ease; }
.offering-card:hover .card-link span { transform: translateX(3px); }

.client-name, .post-meta { color: var(--text-dim); font-size: 0.875rem; }

.tags, .tag-cloud {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0;
    margin: 0.75rem 0 0;
}

.tags li a, .tag-cloud li a {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: border-color 0.15s ease, color 0.15s ease;
}

.tags li a:hover, .tag-cloud li a:hover,
.tag-cloud li a.active {
    border-color: var(--accent-2);
    color: var(--text);
}

/* ---------------------------------------------------------------
   CTA banner
   --------------------------------------------------------------- */
.cta-banner {
    margin-top: 6rem;
    padding: 3.5rem 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background:
        radial-gradient(480px circle at 15% 20%, rgba(124, 92, 255, 0.18), transparent 60%),
        radial-gradient(420px circle at 85% 80%, rgba(0, 217, 255, 0.14), transparent 60%),
        var(--surface);
    text-align: center;
}

.cta-banner-inner { max-width: 560px; margin: 0 auto; }
.cta-banner h2 { margin-bottom: 0.4em; }
.cta-banner p { margin-bottom: 1.75rem; }

/* ---------------------------------------------------------------
   Offering detail / blocks
   --------------------------------------------------------------- */
.detail-hero { max-width: 720px; margin-top: 3.5rem; margin-bottom: 1rem; }
.detail-summary { font-size: 1.0625rem; }

.block {
    margin-top: 3rem;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.process-steps {
    list-style: none;
    counter-reset: step;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 1.5rem;
}

.process-steps li {
    counter-increment: step;
    position: relative;
    padding-left: 3rem;
}

.process-steps li::before {
    content: counter(step, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--accent-2);
    background: rgba(0, 217, 255, 0.08);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.process-steps h3 { margin-bottom: 0.25em; }
.process-steps p { margin: 0; }

.stack-items {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    padding: 0;
    margin: 0;
}

.stack-items li {
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    border: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, 0.03);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}

/* ---------------------------------------------------------------
   Case detail
   --------------------------------------------------------------- */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.case-grid-item {
    padding: 1.75rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.case-grid-item h3 {
    color: var(--accent-2);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.6em;
}

.case-grid-item p { color: var(--text); margin: 0; }

.metrics { margin-top: 3.5rem; }

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.25rem;
}

.metric-card {
    padding: 1.5rem;
    text-align: center;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: linear-gradient(180deg, var(--surface), var(--surface-2));
}

.metric-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.metric-label {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ---------------------------------------------------------------
   Blog post body (goldmark output)
   --------------------------------------------------------------- */
.post-body {
    margin-top: 2.5rem;
    font-size: 1.0625rem;
    max-width: 72ch;
}

.post-body h1, .post-body h2, .post-body h3 { margin-top: 1.75em; }
.post-body p, .post-body ul, .post-body ol { color: var(--text-muted); }
.post-body a { color: var(--accent-2); text-decoration: underline; text-underline-offset: 2px; }
.post-body code {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.1em 0.4em;
    font-size: 0.9em;
}
.post-body pre {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.25rem;
    overflow-x: auto;
}
.post-body pre code { background: none; border: none; padding: 0; }
.post-body blockquote {
    margin: 1.5em 0;
    padding: 0.5em 1.25em;
    border-left: 3px solid var(--accent-1);
    color: var(--text-muted);
}

/* ---------------------------------------------------------------
   Filters / pagination
   --------------------------------------------------------------- */
.filters {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.filters label { font-size: 0.875rem; color: var(--text-muted); }

.filters select {
    padding: 0.5rem 0.9rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    color: var(--text);
    font: inherit;
}

.pagination {
    display: flex;
    justify-content: space-between;
    margin-top: 3rem;
    font-weight: 600;
}

.pagination a { color: var(--accent-2); }
.pagination a:hover { color: var(--text); }

/* ---------------------------------------------------------------
   Contacts
   --------------------------------------------------------------- */
.contacts-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr);
    gap: 3rem;
    align-items: start;
}

.contact-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 1.75rem;
}

.contact-steps li {
    display: flex;
    gap: 1rem;
}

.step-index {
    flex: none;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-weight: 700;
    font-size: 0.8125rem;
    color: var(--accent-2);
    background: rgba(0, 217, 255, 0.08);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-steps h3 { margin-bottom: 0.2em; font-size: 1rem; }
.contact-steps p { margin: 0; font-size: 0.9375rem; }

.contacts-form-wrap {
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.lead-form label {
    font-weight: 600;
    font-size: 0.875rem;
    margin-top: 0.75rem;
    color: var(--text);
}

.lead-form input, .lead-form select, .lead-form textarea {
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font: inherit;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus {
    outline: none;
    border-color: var(--accent-2);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.15);
}

.lead-form textarea { min-height: 7rem; resize: vertical; }

.lead-form button {
    margin-top: 1.5rem;
    align-self: flex-start;
}

.field-error {
    color: var(--danger);
    font-size: 0.8125rem;
    margin: 0.25rem 0 0;
}

.notice {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
}

.notice-success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--success);
}

/* ---------------------------------------------------------------
   Footer
   --------------------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--border);
    margin-top: 6rem;
}

.footer-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 3.5rem 1.5rem 2.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 3rem;
}

.footer-brand { max-width: 320px; }
.footer-brand p { margin-top: 0.75rem; font-size: 0.9375rem; }

.footer-links {
    display: flex;
    gap: 3.5rem;
}

.footer-links h4 {
    margin: 0 0 0.9rem;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.6rem;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

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

.footer-bottom {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 1.5rem 2rem;
    color: var(--text-dim);
    font-size: 0.8125rem;
}

.footer-bottom p { margin: 0; }

/* ---------------------------------------------------------------
   Responsive
   --------------------------------------------------------------- */
@media (max-width: 860px) {
    .nav-toggle-btn { display: flex; }

    .site-nav {
        position: fixed;
        inset: 4.25rem 1rem auto 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 1.25rem;
        padding: 1.5rem;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.6);
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity 0.18s ease, transform 0.18s ease;
    }

    .nav-toggle-input:checked ~ .site-nav {
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }

    .site-nav ul {
        flex-direction: column;
        gap: 0.25rem;
    }

    .site-nav ul a {
        display: block;
        padding: 0.5rem 0;
    }

    .nav-cta { align-self: flex-start; }

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

@media (max-width: 600px) {
    main { padding: 0 1.25rem 4rem; }
    section { margin-top: 3.5rem; }
    .cta-banner { padding: 2.5rem 1.5rem; }
    .footer-links { gap: 2rem; flex-wrap: wrap; }
}