/* ==========================================================================
   Efisia — design tokens, base, layout and shared components.
   Light is the default theme; [data-theme="dark"] switches to the neon dark theme.
   Section-specific styles live in css/home.css and css/lara.css.
   ========================================================================== */

@font-face { font-family: "Space Grotesk"; font-weight: 500; font-display: swap; src: url("fonts/space-grotesk-latin-500-normal.woff2") format("woff2"); }
@font-face { font-family: "Space Grotesk"; font-weight: 700; font-display: swap; src: url("fonts/space-grotesk-latin-700-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-weight: 400; font-display: swap; src: url("fonts/inter-latin-400-normal.woff2") format("woff2"); }
@font-face { font-family: "Inter"; font-weight: 600; font-display: swap; src: url("fonts/inter-latin-600-normal.woff2") format("woff2"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 400; font-display: swap; src: url("fonts/jetbrains-mono-latin-400-normal.woff2") format("woff2"); }

:root {
    --font-display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
    --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
    --font-mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;

    --bg: #f6f7fb;
    --bg-alt: #eef0f8;
    --surface: #ffffff;
    --surface-2: #f2f4fa;
    --text: #0b1020;
    --text-muted: #4f5772;
    --border: rgba(15, 23, 42, 0.09);
    --border-strong: rgba(15, 23, 42, 0.16);

    --violet: #7c3aed;
    --cyan: #0891b2;
    --pink: #db2777;
    --amber: #d97706;
    --green: #16a34a;

    --violet-glow: rgba(124, 58, 237, 0.28);
    --cyan-glow: rgba(8, 145, 178, 0.25);
    --pink-glow: rgba(219, 39, 119, 0.22);
    --amber-glow: rgba(217, 119, 6, 0.25);

    --gradient: linear-gradient(115deg, #7c3aed 0%, #2563eb 45%, #06b6d4 100%);
    --gradient-hot: linear-gradient(115deg, #db2777, #7c3aed 55%, #06b6d4);

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 10px 30px -12px rgba(15, 23, 42, 0.18);
    --shadow-glow: 0 14px 40px -14px var(--violet-glow);

    --header-bg: rgba(246, 247, 251, 0.72);
    --code-bg: #0d1117;

    --radius-sm: 10px;
    --radius: 16px;
    --radius-lg: 24px;
    --header-h: 68px;
    --ease: cubic-bezier(0.2, 0.8, 0.2, 1);

    --accent: var(--violet);
    --accent-glow: var(--violet-glow);

    color-scheme: light;
}

:root[data-theme="dark"] {
    --bg: #070912;
    --bg-alt: #0a0d1a;
    --surface: #0f1324;
    --surface-2: #151a31;
    --text: #eef1ff;
    --text-muted: #9ba4c8;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);

    --violet: #a78bfa;
    --cyan: #22d3ee;
    --pink: #f472b6;
    --amber: #fbbf24;
    --green: #4ade80;

    --violet-glow: rgba(167, 139, 250, 0.45);
    --cyan-glow: rgba(34, 211, 238, 0.4);
    --pink-glow: rgba(244, 114, 182, 0.38);
    --amber-glow: rgba(251, 191, 36, 0.38);

    --gradient: linear-gradient(115deg, #a78bfa 0%, #60a5fa 45%, #22d3ee 100%);
    --gradient-hot: linear-gradient(115deg, #f472b6, #a78bfa 55%, #22d3ee);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 18px 40px -16px rgba(0, 0, 0, 0.7);
    --shadow-glow: 0 0 0 1px rgba(167, 139, 250, 0.25), 0 18px 50px -12px var(--violet-glow);

    --header-bg: rgba(7, 9, 18, 0.7);
    --code-bg: #0a0d18;

    color-scheme: dark;
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-h) + 12px);
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.4s var(--ease), color 0.4s var(--ease);
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--text);
    margin: 0 0 0.6em;
}

h1:focus { outline: none; }

p { margin: 0 0 1em; }

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent); }

::selection { background: var(--violet); color: #fff; }

:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    border-radius: 6px;
}

.muted { color: var(--text-muted); }

.icon {
    width: 1.15em;
    height: 1.15em;
    flex-shrink: 0;
    vertical-align: -0.18em;
}

.wrap {
    width: 100%;
    max-width: 1180px;
    margin-inline: auto;
    padding-inline: 24px;
}

@media (max-width: 640px) {
    .wrap { padding-inline: 16px; }
}

.skip-link {
    position: absolute;
    left: 16px;
    top: -60px;
    z-index: 100;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    box-shadow: var(--shadow-md);
    transition: top 0.2s;
}

.skip-link:focus { top: 12px; }

main:focus { outline: none; }

.text-gradient {
    background: var(--gradient-hot);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: shimmer 6s linear infinite;
}

/* ---------- Buttons ---------- */

.fx-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.55em;
    min-height: 48px;
    padding: 0.75em 1.35em;
    border-radius: 999px;
    border: 1px solid transparent;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.2;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background-color 0.25s, border-color 0.25s;
}

.fx-btn:hover { transform: translateY(-2px); }
.fx-btn:active { transform: translateY(0); }
.fx-btn .icon { transition: transform 0.25s var(--ease); }
.fx-btn:hover .icon:last-child { transform: translateX(3px); }

.fx-btn--neon {
    color: #fff;
    background: var(--gradient);
    background-size: 160% auto;
    box-shadow: 0 10px 30px -10px var(--violet-glow), 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
}

.fx-btn--neon:hover {
    color: #fff;
    background-position: right center;
    box-shadow: 0 16px 40px -10px var(--violet-glow), 0 0 24px -4px var(--cyan-glow);
}

:root[data-theme="dark"] .fx-btn--neon { color: #060814; }
:root[data-theme="dark"] .fx-btn--neon:hover { color: #060814; }

.fx-btn--ghost {
    color: var(--text);
    background: var(--surface);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
}

.fx-btn--ghost:hover {
    color: var(--text);
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.fx-btn--lg { min-height: 56px; padding: 0.9em 1.7em; font-size: 1.08rem; }

.icon-btn {
    display: inline-grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.icon-btn:hover { border-color: var(--violet); box-shadow: 0 0 0 3px var(--violet-glow); }
.icon-btn .icon { width: 20px; height: 20px; }

.show-dark { display: none; }
:root[data-theme="dark"] .show-dark { display: block; }
:root[data-theme="dark"] .show-light { display: none; }

/* ---------- Shared pieces ---------- */

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.5em;
    margin: 0 0 1rem;
    padding: 0.35em 0.85em;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface) 75%, transparent);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.pulse-dot, .live-dot, .rec-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    color: var(--green);
    background: currentColor;
    animation: pulse 2s infinite;
    flex-shrink: 0;
}

.rec-dot { color: #ef4444; }

.panel {
    position: relative;
    padding: 28px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s;
}

.panel:hover {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
    box-shadow: var(--shadow-glow);
}

/* Mouse-following glow, positioned by site.js through --mx / --my. */
[data-spotlight]::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, -20%), var(--accent-glow), transparent 45%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

[data-spotlight]:hover::before { opacity: 0.55; }

.panel-icon {
    display: inline-grid;
    place-items: center;
    width: 46px;
    height: 46px;
    margin-bottom: 18px;
    border-radius: 14px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}

.panel-icon .icon { width: 22px; height: 22px; }

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
}

.tags li {
    padding: 4px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface-2);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.checklist {
    display: grid;
    gap: 12px;
    margin: 0 0 28px;
    padding: 0;
    list-style: none;
}

.checklist li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.checklist .icon {
    width: 22px;
    height: 22px;
    margin-top: 2px;
    padding: 4px;
    border-radius: 50%;
    color: #fff;
    background: var(--accent);
    box-shadow: 0 0 14px -2px var(--accent-glow);
}

:root[data-theme="dark"] .checklist .icon { color: #060814; }

.window-bar {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.dots { display: inline-flex; gap: 6px; }
.dots i { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.dots i:nth-child(2) { background: #febc2e; }
.dots i:nth-child(3) { background: #28c840; }

/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-h);
    border-bottom: 1px solid transparent;
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}

.site-header.is-scrolled, .site-header.is-open {
    background: var(--header-bg);
    border-bottom-color: var(--border);
    box-shadow: var(--shadow-sm);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    backdrop-filter: blur(16px) saturate(160%);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: 100%;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    text-decoration: none;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.brand:hover { color: var(--text); }
.brand .efisia-logo { width: 34px; height: 34px; transition: transform 0.6s var(--ease); }
.brand:hover .efisia-logo { transform: rotate(60deg); }

.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-left: auto;
}

.site-nav a {
    position: relative;
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.94rem;
    text-decoration: none;
    transition: color 0.2s, background-color 0.2s;
}

.site-nav a:hover, .site-nav a.is-active { color: var(--text); background: var(--surface-2); }

.site-nav a.nav-cta {
    margin-left: 6px;
    color: #fff;
    background: var(--gradient);
    box-shadow: 0 6px 20px -8px var(--violet-glow);
}

:root[data-theme="dark"] .site-nav a.nav-cta { color: #060814; }

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-switch {
    display: inline-flex;
    padding: 3px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface);
}

.lang-switch a {
    display: inline-grid;
    place-items: center;
    min-width: 40px;
    height: 36px;
    padding: 0 8px;
    border-radius: 9px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s, background-color 0.2s;
}

.lang-switch a:hover { color: var(--text); }

.lang-switch a.is-active {
    color: #fff;
    background: var(--gradient);
}

:root[data-theme="dark"] .lang-switch a.is-active { color: #060814; }

.menu-btn { display: none; }

@media (max-width: 1020px) {
    .menu-btn { display: inline-grid; }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
        margin: 0;
        padding: 12px 16px 20px;
        background: var(--header-bg);
        -webkit-backdrop-filter: blur(16px) saturate(160%);
        backdrop-filter: blur(16px) saturate(160%);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-8px);
        transition: opacity 0.25s, transform 0.25s var(--ease), visibility 0.25s;
    }

    .site-header.is-open .site-nav {
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .site-nav a { padding: 12px 16px; border-radius: 12px; font-size: 1rem; }
    .site-nav a.nav-cta { margin: 8px 0 0; text-align: center; }
    .header-actions { margin-left: auto; }
}

@media (max-width: 420px) {
    .brand-name { display: none; }
    .lang-switch a { min-width: 36px; padding: 0 6px; }
}

/* ---------- Footer ---------- */

.site-footer {
    position: relative;
    margin-top: 40px;
    padding: 56px 0 28px;
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
}

.site-footer::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-hot);
    opacity: 0.7;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.3fr 2fr auto;
    gap: 32px;
    align-items: start;
}

.footer-brand p { max-width: 320px; margin-top: 14px; }

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 24px;
    padding-top: 6px;
}

.footer-links a { color: var(--text-muted); text-decoration: none; font-weight: 600; }
.footer-links a:hover { color: var(--text); }

.to-top {
    display: inline-grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    color: var(--text);
    background: var(--surface);
    transition: transform 0.25s var(--ease), box-shadow 0.25s;
}

.to-top:hover { color: var(--text); transform: translateY(-3px); box-shadow: 0 0 0 4px var(--violet-glow); }

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 24px;
    margin-top: 40px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
    font-size: 0.88rem;
    color: var(--text-muted);
}

@media (max-width: 760px) {
    .footer-inner { grid-template-columns: 1fr auto; }
    .footer-links { grid-column: 1 / -1; grid-row: 2; }
}

/* ---------- Reveal on scroll ---------- */

.js [data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
    transition-delay: var(--reveal-delay, 0s);
}

.js [data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

/* ---------- Keyframes ---------- */

@keyframes shimmer { to { background-position: 200% center; } }

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 color-mix(in srgb, currentColor 55%, transparent); }
    70% { box-shadow: 0 0 0 8px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .js [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- Blazor framework UI ---------- */

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    color: #111;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after { content: "An error has occurred."; }

.valid.modified:not([type=checkbox]) { outline: 1px solid #26b050; }
.invalid { outline: 1px solid #e50000; }
.validation-message { color: #e50000; }