/* ============================================================
   artnode.css — landing page styles
   Extends analytics.css (load analytics.css first)
   ============================================================ */

/* ── Layout wrapper ───────────────────────────────────────── */
.pg {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ── Navigation ───────────────────────────────────────────── */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: #ffffff;
    isolation: isolate;
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-logo {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-main);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 7px;
    flex-shrink: 0;
}

.nav-logo-mark {
    display: inline-block;
    width: 18px;
    height: 18px;
    background-color: var(--color-green);
    border-radius: 3px;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-links a {
    font-size: 0.75rem;
    color: var(--text-sub);
    text-decoration: none;
    letter-spacing: 0.03em;
    white-space: nowrap;
}

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

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
    display: inline-block;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.65rem 1.4rem;
    cursor: pointer;
    border: none;
    border-radius: 0;
    -webkit-appearance: none;
    appearance: none;
    white-space: nowrap;
    transition: opacity 0.15s;
}

.btn:hover { opacity: 0.82; }

.btn-dark {
    background-color: var(--text-main);
    color: #ffffff;
}

.btn-green {
    background-color: var(--color-green);
    color: var(--text-main);
}

/* Smaller nav CTA */
.btn-nav {
    font-size: 0.72rem;
    padding: 0.42rem 0.85rem;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 4rem 1.5rem 4.5rem;
    text-align: center;
}

.hero h1 {
    font-size: clamp(1.35rem, 3.5vw, 2rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    line-height: 1.2;
    text-transform: uppercase;
    margin: 0 0 0.85rem;
    color: var(--text-main);
}

.hero-sub {
    font-size: 0.9rem;
    color: var(--text-sub);
    max-width: 500px;
    margin: 0 auto 2.25rem;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* ── Generic section ──────────────────────────────────────── */
.section {
    padding: 2.75rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #ffffff;
}

.section-bg {
    background-color: var(--bg-color);
}

.section-eyebrow {
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin: 0 0 0.35rem;
}

.section-title {
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

/* ── Feature grid ─────────────────────────────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background-color: var(--border-color);
    border: 1px solid var(--border-color);
}

.feat-card {
    background-color: #ffffff;
    padding: 1.35rem 1.25rem;
}

.feat-card-muted {
    background-color: var(--bg-color);
}

.feat-num {
    font-size: 0.58rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin: 0 0 0.4rem;
}

.feat-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 0.5rem;
    color: var(--text-main);
}

.feat-desc {
    font-size: 0.72rem;
    color: var(--text-sub);
    line-height: 1.6;
    margin: 0;
}

/* ── Hosting section ──────────────────────────────────────── */
.hosting-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

.hosting-copy h2 {
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    line-height: 1.4;
    margin: 0 0 0.85rem;
    color: var(--text-main);
}

.hosting-copy p {
    font-size: 0.8rem;
    color: var(--text-sub);
    line-height: 1.75;
    margin: 0 0 0.75rem;
}

.hosting-card {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
}

.hosting-card-label {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin: 0 0 0.5rem;
}

.hosting-card h3 {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-main);
    margin: 0 0 1rem;
}

.hosting-checklist {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem;
}

.hosting-checklist li {
    font-size: 0.73rem;
    color: var(--text-sub);
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.45;
}

.hosting-checklist li:last-child {
    border-bottom: none;
}

.hosting-checklist li::before {
    content: '✓';
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-main);
    flex-shrink: 0;
    margin-top: 0.05rem;
}

.hosting-card-desc {
    font-size: 0.72rem;
    color: var(--text-sub);
    line-height: 1.6;
    margin: 0 0 0.85rem;
}

.hosting-card a {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
}

.hosting-card a:hover {
    text-decoration: underline;
}

/* ── Open-source section ──────────────────────────────────── */
.oss-body {
    max-width: 640px;
}

.oss-body p {
    font-size: 0.8rem;
    color: var(--text-sub);
    line-height: 1.8;
    margin: 0 0 0.75rem;
}

/* ── Standards strip ──────────────────────────────────────── */
.standards-strip {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 1.1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.standards-label {
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin-right: 0.35rem;
    white-space: nowrap;
}

/* ── Demo strip ───────────────────────────────────────────── */
.demo-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background-color: var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.demo-cell {
    padding: 2.25rem 1.75rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.45rem;
    cursor: pointer;
    transition: filter 0.15s;
}

.demo-cell:hover { filter: brightness(0.94); }

.demo-cell-green { background-color: var(--color-green); }
.demo-cell-pink  { background-color: var(--color-pink); }

.demo-eyebrow {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin: 0;
}

.demo-cell h3 {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-main);
    margin: 0;
}

.demo-cell p {
    font-size: 0.75rem;
    color: var(--text-sub);
    line-height: 1.55;
    margin: 0;
}

.demo-cell a {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    margin-top: 0.2rem;
}

/* ── Contact section ──────────────────────────────────────── */
.contact-body {
    max-width: 480px;
}

.contact-body p {
    font-size: 0.8rem;
    color: var(--text-sub);
    line-height: 1.75;
    margin: 0 0 1.25rem;
}

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
    background-color: var(--text-main);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.footer-left p {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    margin: 0;
}

.footer-left a {
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
}

.footer-left a:hover { color: #ffffff; }

/* Language switcher in footer */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.1rem;
}

.lang-btn {
    background: none;
    border: none;
    padding: 0.15rem 0.35rem;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.45);
    cursor: pointer;
    letter-spacing: 0.04em;
}

.lang-btn:hover { color: rgba(255, 255, 255, 0.85); }

.lang-btn.active {
    color: #ffffff;
    font-weight: 700;
}

/* Nav lang switcher — dark text on white nav */
.site-nav .lang-btn {
    color: rgba(0, 0, 0, 0.4);
}
.site-nav .lang-btn:hover { color: rgba(0, 0, 0, 0.8); }
.site-nav .lang-btn.active { color: #1a1a1a; font-weight: 700; }

/* ── Scroll-in animation (reused from analytics.css pattern) ── */
.fade-in {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.55s ease-out, transform 0.55s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 767px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hosting-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .hero h1 {
        font-size: 1.3rem;
    }

    .nav-links {
        gap: 1rem;
    }

    /* Hide secondary nav links on small screens, keep CTA */
    .nav-links .nav-hide-sm {
        display: none;
    }
}

@media (max-width: 480px) {
    .demo-strip {
        grid-template-columns: 1fr;
    }

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

/* ── Burger menu ──────────────────────────────────────────── */
.nav-burger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 22px;
    height: 15px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.nav-burger span {
    display: block;
    height: 2px;
    background: var(--text-main);
    transition: transform 0.25s, opacity 0.25s;
}

.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 0.5rem 0;
    z-index: 99;
}

.nav-menu.open { display: flex; }

.nav-menu a {
    font-size: 0.78rem;
    color: var(--text-sub);
    text-decoration: none;
    padding: 0.65rem 1.5rem;
    letter-spacing: 0.03em;
    border-bottom: 1px solid var(--border-color);
}

.nav-menu a:last-child { border-bottom: none; }
.nav-menu a:hover { color: var(--text-main); background: var(--bg-color); }

/* ── Footer minimal ───────────────────────────────────────── */
.site-footer {
    background-color: var(--text-main);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.site-footer p {
    font-size: 0.7rem;
    color: rgba(255,255,255,0.45);
    margin: 0;
}