/* CodeAndCircuite firmware release portal — 80s neon, hot pink + purple. */

:root {
    --neon-pink: #FF1493;
    --neon-pink-deep: #FF006E;
    --neon-purple: #B026FF;
    --electric-purple: #9D00FF;
    --void-black: #000000;
    --carbon: #050505;
    --dark-matter: #0A0A0A;
    --slate-dark: #1A1A1A;
    --slate: #2A2A2A;
    --text: #FFFFFF;
    --text-muted: #B0B0C0;

    --gradient-primary: linear-gradient(135deg, #FF1493 0%, #B026FF 100%);
    --gradient-secondary: linear-gradient(135deg, #FF006E 0%, #B026FF 50%, #9D00FF 100%);
    --gradient-bg: linear-gradient(180deg, #000000 0%, #0A0A0A 100%);

    --font-heading: 'Orbitron', sans-serif;
    --font-sub: 'Exo 2', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --t-fast: 0.2s ease;
    --t-medium: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background: var(--gradient-bg);
    color: var(--text);
    line-height: 1.7;
    min-height: 100vh;
}
::selection { background: var(--neon-pink); color: var(--void-black); }

a {
    color: var(--neon-pink);
    text-decoration: none;
    transition: var(--t-fast);
}
a:hover { color: var(--neon-purple); }

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 900;
    letter-spacing: 0.05em;
    line-height: 1.2;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section { padding: 4rem 0; position: relative; }
.section::before {
    content: "";
    position: absolute; left: 0; right: 0; top: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 20, 147, 0.4), transparent);
}

/* Navbar */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 20, 147, 0.15);
    padding: 0.9rem 0;
}
.nav-inner {
    display: flex; align-items: center; justify-content: space-between;
    gap: 1rem;
}
.brand {
    display: flex; align-items: center; gap: 0.6rem;
    color: var(--text); font-family: var(--font-sub);
    font-weight: 600; font-size: 0.95rem; letter-spacing: 0.04em;
}
.brand em { color: var(--text-muted); font-style: normal; }
.brand:hover { color: var(--neon-pink); }
.nav-links {
    display: flex; gap: 1.5rem; list-style: none;
    font-family: var(--font-sub); font-size: 0.88rem;
}
.nav-links a { color: var(--text-muted); padding: 0.4rem 0; position: relative; }
.nav-links a:hover { color: var(--neon-pink); }
.nav-links a.nav-active {
    color: var(--text);
    font-weight: 600;
}
.nav-links a.nav-active::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -0.15rem;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* Product picker (landing) */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}
.product-card {
    background: linear-gradient(135deg, rgba(255,20,147,0.05) 0%, rgba(176,38,255,0.05) 100%);
    border: 1px solid rgba(255, 20, 147, 0.25);
    border-radius: 12px;
    padding: 1.5rem 1.7rem;
    color: var(--text);
    display: flex;
    flex-direction: column;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transition: transform var(--t-fast), border-color var(--t-fast), box-shadow var(--t-fast);
}
.product-card::before {
    content: "";
    position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--gradient-primary);
    transition: height var(--t-fast);
}
.product-card:hover {
    color: var(--text);
    transform: translateY(-3px);
    border-color: var(--neon-pink);
    box-shadow: 0 0 30px rgba(255, 20, 147, 0.25);
}
.product-card:hover::before { height: 4px; }
.product-card header { margin-bottom: 0.5rem; }
.product-card .glow-text-sm { margin: 0.2rem 0 0; }
.product-card p { flex: 1; margin: 0.75rem 0 1.2rem; }
.product-card footer { padding: 0; margin: 0; text-align: left; }
.cta-link {
    color: var(--neon-pink);
    font-family: var(--font-sub);
    font-weight: 700;
    letter-spacing: 0.04em;
    font-size: 0.95rem;
}

/* Hero */
.hero { padding: 4rem 0 2.5rem; }
.lead-hero {
    font-size: clamp(1.3rem, 2.5vw, 1.7rem);
    line-height: 1.4;
    color: var(--text);
    max-width: 38rem;
    margin-top: 0.5rem;
}
.lead-hero strong {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 900;
}
.hero-kicker {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--neon-purple);
    margin: 0 0 1rem;
    padding: 0.3rem 0.7rem;
    display: inline-block;
    border: 1px solid rgba(176, 38, 255, 0.4);
    border-radius: 999px;
    background: rgba(176, 38, 255, 0.06);
}
.hero-kicker a { color: var(--neon-pink); font-weight: 700; }
.hero-kicker a:hover { color: var(--neon-purple); }
.hero h1 {
    font-size: clamp(2.5rem, 7vw, 5rem);
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    filter: drop-shadow(0 0 30px rgba(255, 20, 147, 0.4));
}
.glow-text-sm {
    font-size: clamp(1.5rem, 3.5vw, 2.3rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin: 0.3rem 0;
}
.lead {
    font-family: var(--font-sub);
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 42rem;
    margin-bottom: 2rem;
}
.hero-quick { display: flex; gap: 0.8rem; flex-wrap: wrap; }

/* CTAs */
.cta {
    display: inline-flex; align-items: center; gap: 0.4rem;
    background: var(--gradient-primary);
    color: var(--void-black);
    font-family: var(--font-sub); font-weight: 700;
    padding: 0.7rem 1.4rem; border-radius: 6px;
    letter-spacing: 0.04em; font-size: 0.95rem;
    transition: var(--t-fast);
    box-shadow: 0 0 20px rgba(255, 20, 147, 0.4);
}
.cta:hover {
    color: var(--void-black);
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 20, 147, 0.7);
}
.cta-alt {
    background: transparent;
    color: var(--neon-pink);
    border: 1px solid var(--neon-pink);
    box-shadow: 0 0 12px rgba(255, 20, 147, 0.25) inset;
}
.cta-alt:hover { background: rgba(255, 20, 147, 0.1); color: var(--neon-pink); }

/* Project section */
.project-section { padding: 3rem 0; }
.project-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem;
}
.kicker {
    font-family: var(--font-mono);
    color: var(--neon-purple);
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
}
.project-desc {
    font-family: var(--font-sub);
    color: var(--text-muted);
    margin-top: 0.5rem;
    max-width: 38rem;
}
.badge-latest {
    font-family: var(--font-mono);
    background: rgba(176, 38, 255, 0.12);
    border: 1px solid rgba(176, 38, 255, 0.5);
    color: var(--neon-purple);
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    font-size: 0.78rem;
    white-space: nowrap;
}

/* Release card */
.release-card {
    background: linear-gradient(135deg, rgba(255,20,147,0.05) 0%, rgba(176,38,255,0.05) 100%);
    border: 1px solid rgba(255, 20, 147, 0.25);
    border-radius: 12px;
    padding: 1.4rem 1.6rem;
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
}
.release-card::before {
    content: "";
    position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: var(--gradient-primary);
}
.release-card.experimental-card {
    background: linear-gradient(135deg, rgba(230, 179, 57, 0.06) 0%, rgba(176, 38, 255, 0.06) 100%);
    border-color: rgba(230, 179, 57, 0.35);
    margin-top: 0.5rem;
}
.release-card.experimental-card::before {
    background: linear-gradient(135deg, #E6B339 0%, #B026FF 100%);
}
.exp-tag {
    display: inline-block;
    background: rgba(230, 179, 57, 0.12);
    border: 1px solid rgba(230, 179, 57, 0.5);
    color: #E6B339;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    margin-right: 0.4rem;
    letter-spacing: 0.05em;
}
.download-btn-exp {
    background: linear-gradient(135deg, #E6B339 0%, #B026FF 100%);
    box-shadow: 0 0 20px rgba(230, 179, 57, 0.4);
}
.download-btn-exp:hover { box-shadow: 0 0 30px rgba(230, 179, 57, 0.7); }
.release-card > header {
    display: flex; justify-content: space-between; align-items: center;
    gap: 1rem; flex-wrap: wrap;
}
.release-card h3 {
    font-family: var(--font-sub);
    font-size: 1.15rem;
    letter-spacing: 0.03em;
    font-weight: 700;
    color: var(--text);
}
.release-card .meta {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.download-btn {
    display: inline-flex; flex-direction: column; align-items: center;
    background: var(--gradient-primary);
    color: var(--void-black) !important;
    padding: 0.7rem 1.4rem;
    border-radius: 8px;
    font-family: var(--font-sub); font-weight: 700;
    letter-spacing: 0.04em;
    text-align: center;
    box-shadow: 0 0 20px rgba(255, 20, 147, 0.4);
    transition: var(--t-fast);
}
.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 20, 147, 0.7);
}
.download-btn span { font-size: 1rem; }
.download-btn small {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 0.1rem;
}
.download-btn[aria-disabled="true"] {
    opacity: 0.45; pointer-events: none; filter: grayscale(0.6);
}

.release-details {
    display: grid; grid-template-columns: 1fr auto; gap: 1.2rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed rgba(255, 255, 255, 0.08);
}
.release-details code.mono {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
}
.break { word-break: break-all; }

.mono { font-family: var(--font-mono); }

/* Unified disclosure (changelog / flash / older versions) */
details > summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    user-select: none;
    transition: color var(--t-fast);
}
details > summary::-webkit-details-marker { display: none; }
details > summary::before {
    content: "";
    flex-shrink: 0;
    width: 0.55rem; height: 0.55rem;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    margin-bottom: 0.2rem;
    transition: transform var(--t-medium);
    opacity: 0.75;
}
details[open] > summary::before {
    transform: rotate(45deg);
    margin-bottom: 0;
    margin-top: 0.2rem;
}
details > summary:hover { color: var(--neon-pink); }

.changelog > summary {
    font-family: var(--font-sub);
    color: var(--neon-pink);
    margin-top: 1rem;
    font-size: 0.9rem;
}
.changelog pre {
    margin-top: 0.5rem;
    background: rgba(0, 0, 0, 0.4);
    padding: 0.8rem 1rem;
    border-radius: 6px;
    font-size: 0.82rem;
    white-space: pre-wrap;
    color: var(--text-muted);
}

/* Flash instructions / Older versions wrappers */
.flash-instructions, .older-versions {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    padding: 0.8rem 1.2rem;
    margin-top: 0.8rem;
}
.flash-instructions > summary, .older-versions > summary {
    font-family: var(--font-sub);
    color: var(--neon-purple);
    padding: 0.3rem 0;
}
.flash-body { padding: 0.8rem 0; }
.flash-body p { color: var(--text-muted); margin: 0.5rem 0; font-family: var(--font-sub); }
.flash-body pre {
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255, 20, 147, 0.2);
    padding: 0.7rem 1rem;
    border-radius: 6px;
    font-size: 0.82rem;
    color: var(--neon-pink);
    overflow-x: auto;
    margin: 0.3rem 0;
}

/* Older versions table */
.versions-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
    font-size: 0.88rem;
}
.versions-table th {
    text-align: left;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.versions-table td {
    padding: 0.55rem 0.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-family: var(--font-mono);
    color: var(--text-muted);
}
.versions-table td:last-child { text-align: right; }
.versions-table a {
    color: var(--neon-pink);
    font-weight: 500;
}

/* Footer */
.footer {
    border-top: 1px solid rgba(255, 20, 147, 0.15);
    padding: 2rem 0;
    margin-top: 3rem;
    background: rgba(0, 0, 0, 0.4);
}
.footer-inner {
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 1rem;
    font-family: var(--font-sub);
}
.muted { color: var(--text-muted); font-size: 0.88rem; }

/* Flash guide */
.flash-guide .steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: 1rem;
}
.step {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 1.1rem 1.3rem;
}
.step > header {
    display: flex; align-items: center; gap: 0.7rem;
    margin-bottom: 0.6rem;
}
.step h3 {
    font-family: var(--font-sub);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.02em;
    margin: 0;
}
.step h4 {
    font-family: var(--font-sub);
    font-size: 0.92rem;
    color: var(--neon-pink);
    margin: 0.5rem 0 0.4rem;
    letter-spacing: 0.03em;
}
.step p { color: var(--text-muted); font-family: var(--font-sub); font-size: 0.92rem; margin: 0.3rem 0; }
.step p.muted-sm { font-size: 0.82rem; opacity: 0.75; }
.step .step-cta {
    max-width: 100%;
    word-break: break-word;
    text-align: center;
}
.step pre {
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(255, 20, 147, 0.2);
    padding: 0.7rem 1rem;
    border-radius: 6px;
    font-size: 0.78rem;
    color: var(--neon-pink);
    overflow-x: auto;
    margin: 0.5rem 0;
}
.step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 1.8rem; height: 1.8rem;
    background: var(--gradient-primary);
    color: var(--void-black);
    font-family: var(--font-mono);
    font-weight: 700; font-size: 0.92rem;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 12px rgba(255, 20, 147, 0.45);
}
.badge-easy {
    background: rgba(176, 38, 255, 0.15);
    border: 1px solid rgba(176, 38, 255, 0.5);
    color: var(--neon-purple);
    padding: 0.1rem 0.5rem;
    border-radius: 999px;
    font-size: 0.65rem;
    font-family: var(--font-mono);
    margin-left: 0.4rem;
}

/* Responsive */
@media (max-width: 640px) {
    .nav-links { display: none; }
    .project-header { flex-direction: column; align-items: flex-start; }
    .release-card > header { flex-direction: column; align-items: stretch; }
    .download-btn { width: 100%; }
    .release-details { grid-template-columns: 1fr; }
}