/* =====================================================================================================
   NeuroShrub — application shell: page background, top navigation, HUD resource bar, footer, auth pages,
   legal/information pages and small shared helpers. Tokens and components come from theme.css.
   ===================================================================================================== */

html { scroll-padding-top: 76px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Layered background on a fixed, composited layer (no background-attachment: fixed repaints). */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        radial-gradient(900px 520px at 100% -8%, rgba(124, 58, 237, .2), transparent 62%),
        radial-gradient(760px 480px at -8% 6%, rgba(76, 29, 149, .32), transparent 60%),
        radial-gradient(1200px 600px at 50% 120%, rgba(30, 18, 58, .9), transparent 70%),
        var(--ai-bg);
}
body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: .55;
    background-image:
        linear-gradient(rgba(139, 92, 246, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(139, 92, 246, .045) 1px, transparent 1px);
    background-size: 48px 48px;
    -webkit-mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 75%);
    mask-image: radial-gradient(ellipse at 50% 0%, #000 0%, transparent 75%);
}

main { flex: 1 0 auto; }
footer { flex-shrink: 0; }
.skip-link { position: absolute; inset-inline-start: .5rem; top: .5rem; z-index: 2000; }

/* =====================================================================================================
   Brand mark
   ===================================================================================================== */
.brand { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--ai-text); }
.brand-mark { display: inline-block; width: 2.1rem; height: 2.1rem; flex: none; filter: drop-shadow(0 0 8px rgba(139, 92, 246, .55)); transition: filter .4s ease, transform .4s var(--ai-ease); }
.brand:hover .brand-mark { filter: drop-shadow(0 0 14px rgba(167, 139, 250, .9)); }
/* Wordmark "NeuroShrub": one word, mixed case, "Shrub" in violet (see Display.BrandWord). */
.brand-word { font-family: var(--ai-font-display); font-weight: 700; font-size: 1.3rem; letter-spacing: .03em; line-height: 1; white-space: nowrap; }
.brand-word b { color: var(--ai-violet-soft); font-weight: 700; }

/* =====================================================================================================
   Top navigation
   ===================================================================================================== */
.app-header { z-index: 1030; }
.app-navbar {
    --bs-navbar-padding-y: .55rem;
    --bs-navbar-color: var(--ai-text-muted);
    --bs-navbar-hover-color: var(--ai-text);
    --bs-navbar-active-color: #fff;
    --bs-navbar-toggler-border-color: var(--ai-border);
    --bs-navbar-toggler-border-radius: 0;
    --bs-navbar-toggler-focus-width: .15rem;
    background: linear-gradient(180deg, rgba(9, 6, 17, .96), rgba(13, 8, 26, .9));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--ai-border-soft);
    position: relative;
    /* backdrop-filter makes the navbar and the resource bar separate layers; keep the navbar (and its dropdowns) on top. */
    z-index: 2;
}
.app-navbar::after {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    inset-inline-end: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(167, 139, 250, .7) 30%, rgba(124, 58, 237, .9) 50%, rgba(167, 139, 250, .7) 70%, transparent);
    opacity: .6;
}
.app-navbar .navbar-brand { margin-inline-end: 1.25rem; padding: 0; }
.app-navbar .nav-link {
    position: relative;
    display: flex;
    align-items: center;
    gap: .4rem;
    font-family: var(--ai-font-display);
    font-size: .8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--ai-text-muted);
    padding: .55rem .7rem !important;
    transition: color .3s ease, background-color .3s ease;
}
.app-navbar .nav-link .bi { color: var(--ai-violet-soft); opacity: .8; font-size: .95rem; }
.app-navbar .nav-link:hover { color: var(--ai-text); background: rgba(124, 58, 237, .08); }
.app-navbar .nav-link.active, .app-navbar .show > .nav-link {
    color: #fff;
    background: linear-gradient(180deg, rgba(124, 58, 237, 0), rgba(124, 58, 237, .18));
    text-shadow: 0 0 12px rgba(167, 139, 250, .7);
}
.app-navbar .nav-link.active::after {
    content: "";
    position: absolute;
    inset-inline-start: .5rem;
    inset-inline-end: .5rem;
    bottom: -.56rem;
    height: 2px;
    background: var(--ai-violet-soft);
    box-shadow: 0 0 12px 1px rgba(139, 92, 246, .9);
}
.app-navbar .dropdown-toggle::after { border-top-color: currentColor; margin-inline-start: .15rem; }
.navbar-toggler { padding: .35rem .55rem; }
.navbar-toggler-icon { width: 1.3em; height: 1.3em; }
.account-name { max-width: 11rem; }
.account-button { font-family: var(--ai-font-body) !important; text-transform: none !important; letter-spacing: 0 !important; }

@media (min-width: 1200px) and (max-width: 1399.98px) {
    .app-navbar .nav-link { padding-inline: .5rem !important; letter-spacing: .07em; }
}
/* Mobile menu: stacked rows with a violet edge on the active page. */
@media (max-width: 1199.98px) {
    .app-navbar .navbar-collapse { margin-top: .6rem; padding: .5rem 0 .9rem; border-top: 1px solid var(--ai-border-soft); max-height: calc(100vh - 70px); overflow-y: auto; }
    .app-navbar .nav-link { padding: .7rem .8rem !important; font-size: .86rem; border-inline-start: 2px solid transparent; }
    .app-navbar .nav-link.active { border-inline-start-color: var(--ai-violet-soft); }
    .app-navbar .nav-link.active::after { display: none; }
    .app-navbar .dropdown-menu { border-top-width: 1px; box-shadow: none; margin-inline-start: 1rem; }
}

/* =====================================================================================================
   HUD resource bar
   ===================================================================================================== */
.resource-bar {
    position: relative;
    z-index: 1;
    background: rgba(13, 9, 24, .92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--ai-border-soft);
}
.hud { display: flex; align-items: stretch; gap: .35rem; overflow-x: auto; scrollbar-width: none; padding-block: .4rem; }
.hud::-webkit-scrollbar { display: none; }
.hud-item {
    --ai-accent: var(--ai-violet-soft);
    display: flex;
    align-items: center;
    gap: .55rem;
    flex: none;
    padding: .2rem .8rem .2rem .55rem;
    border-inline-start: 2px solid color-mix(in srgb, var(--ai-accent) 70%, transparent);
    background: linear-gradient(90deg, color-mix(in srgb, var(--ai-accent) 10%, transparent), transparent 80%);
    min-width: 0;
}
.hud-item .bi { color: var(--ai-accent); font-size: .95rem; }
.hud-label { display: block; font-family: var(--ai-font-display); font-size: .6rem; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--ai-text-muted); line-height: 1.1; }
.hud-value { display: block; font-family: var(--ai-font-display); font-size: .92rem; font-weight: 600; color: var(--ai-text); font-variant-numeric: tabular-nums; line-height: 1.2; white-space: nowrap; }
.hud-value small { color: var(--ai-text-muted); font-weight: 500; font-size: .76em; }
.hud-company { --ai-accent: var(--ai-violet-bright); max-width: 15rem; }
.hud-company .hud-value { overflow: hidden; text-overflow: ellipsis; }
.hud-money { --ai-accent: var(--ai-money); }
.hud-compute { --ai-accent: var(--ai-compute); }
.hud-energy { --ai-accent: var(--ai-energy); }
.hud-storage { --ai-accent: var(--ai-storage); }
.hud-reputation { --ai-accent: var(--ai-reputation); }
.hud-meter { display: block; width: 4.5rem; height: 3px; margin-top: .2rem; background: rgba(155, 147, 173, .18); overflow: hidden; position: relative; }
.hud-meter > span { position: absolute; inset: 0 auto 0 0; background: var(--ai-accent); box-shadow: 0 0 6px var(--ai-accent); }
@media (max-width: 575.98px) { .hud-meter { display: none; } .hud-item { padding-inline-end: .55rem; } }

/* =====================================================================================================
   Footer
   ===================================================================================================== */
.site-footer {
    position: relative;
    margin-top: 2rem;
    background: linear-gradient(180deg, rgba(13, 9, 24, .4), rgba(13, 9, 24, .95));
    border-top: 1px solid var(--ai-border-soft);
    color: var(--ai-text-muted);
}
.site-footer::before { content: ""; position: absolute; inset-inline-start: 0; inset-inline-end: 0; top: -1px; height: 1px; background: linear-gradient(90deg, transparent, var(--ai-violet), transparent); opacity: .7; }
.site-footer a { color: var(--ai-text-muted); text-decoration: none; transition: color .25s ease; }
.site-footer a:hover { color: var(--ai-violet-pale); text-decoration: underline; }
.footer-tagline { font-family: var(--ai-font-display); font-size: .78rem; font-weight: 600; letter-spacing: .26em; text-transform: uppercase; color: var(--ai-violet-pale); }
.footer-heading { font-family: var(--ai-font-display); font-size: .7rem; font-weight: 600; text-transform: uppercase; letter-spacing: .18em; color: var(--ai-violet-soft); margin-bottom: .45rem; }
.footer-nav li { margin-bottom: .25rem; }
.footer-fineprint { border-top: 1px solid var(--ai-border-soft); padding-top: 1rem; margin-top: 1.25rem; font-size: .8rem; }

/* =====================================================================================================
   Shared helpers kept from the original UI (still used across views)
   ===================================================================================================== */
.company-chip { max-width: 16rem; }
.action-grid .btn { min-height: 3.1rem; }
.locked-box { background: rgba(13, 9, 24, .7); border: 1px dashed var(--ai-border); }
.requirement-list li { margin-bottom: .2rem; }
.requirement-list .bi-check-circle-fill { filter: drop-shadow(0 0 4px rgba(52, 211, 153, .6)); }
section[id] { scroll-margin-top: 7.5rem; }
.sparkline { width: 100%; height: 160px; }
.is-me { background: rgba(124, 58, 237, .12) !important; box-shadow: inset 3px 0 0 var(--ai-violet-soft); }
.capacity-negative { color: var(--ai-danger) !important; font-weight: 700; }
.mono-cut { font-family: var(--ai-font-mono); font-size: .8rem; max-width: 12rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; vertical-align: bottom; }
.contact-hp { position: absolute; inset-inline-start: -10000px; width: 1px; height: 1px; overflow: hidden; }

/* Global event banner */
.event-banner {
    position: relative;
    border: 1px solid rgba(167, 139, 250, .45);
    border-inline-start: 3px solid var(--ai-violet-soft);
    background: linear-gradient(90deg, rgba(124, 58, 237, .2), rgba(96, 165, 250, .06) 70%), var(--ai-panel);
    box-shadow: inset 0 0 30px rgba(124, 58, 237, .12);
}
.event-banner .stat-icon { color: var(--ai-violet-pale); }

/* =====================================================================================================
   Auth pages (login, register, password)
   ===================================================================================================== */
.auth-card { max-width: 460px; margin-inline: auto; position: relative; isolation: isolate; } /* keeps the z-index:-1 glow behind the card only */
.auth-card .card { padding-top: .25rem; border-top: 2px solid var(--ai-violet-bright); }
.auth-card::before {
    content: "";
    position: absolute;
    inset: -2.5rem -3rem;
    z-index: -1;
    background: radial-gradient(closest-side, rgba(124, 58, 237, .28), transparent);
    pointer-events: none;
}
@media (max-width: 575.98px) { .auth-card::before { inset: -2.5rem 0; } } /* keep the glow inside narrow screens (no sideways scroll) */
.auth-card h1 { font-size: 1.45rem; letter-spacing: .1em; }
.auth-title { text-transform: uppercase; }
.auth-brand { display: flex; flex-direction: column; align-items: flex-start; gap: .4rem; padding-bottom: 1rem; margin-bottom: 1.1rem; border-bottom: 1px solid var(--ai-border-soft); }
.auth-brand__logo { width: 13.9rem; height: auto; max-width: 100%; filter: drop-shadow(0 0 14px rgba(124, 58, 237, .35)); }
.auth-brand__tagline { font-family: var(--ai-font-display); font-size: .72rem; font-weight: 600; letter-spacing: .3em; text-transform: uppercase; color: var(--ai-violet-soft); }
/* Forms that keep one line per field for its validation message (registration): a message shown when a field is left (e.g. "Passwords
   do not match.") then does not push the controls below it — the consent checkbox — away while they are being clicked. A longer message
   can still add lines; js/validation.js holds such checks until the click has finished. */
.form-reserve-messages .form-floating > .field-validation-valid,
.form-reserve-messages .form-floating > .field-validation-error { display: block; min-height: 1.5em; }

/* =====================================================================================================
   Status / error pages
   ===================================================================================================== */
.ai-status {
    position: relative;
    display: grid;
    justify-items: center;
    text-align: center;
    gap: .5rem;
    padding: clamp(2rem, 6vw, 4.5rem) 1rem;
}
.ai-status__code { font-family: var(--ai-font-display); font-size: clamp(4rem, 3rem + 8vw, 8.5rem); font-weight: 700; line-height: 1; letter-spacing: .08em; color: transparent; background: linear-gradient(180deg, #fff, var(--ai-violet-soft) 55%, var(--ai-violet-dark)); -webkit-background-clip: text; background-clip: text; filter: drop-shadow(0 0 30px rgba(124, 58, 237, .45)); }
.ai-status__art { width: min(11rem, 50vw); margin-bottom: .5rem; }
.ai-status__icon { font-size: 3.2rem; color: var(--ai-warning); filter: drop-shadow(0 0 18px rgba(251, 191, 36, .45)); }
.ai-status h1 { font-size: clamp(1.1rem, .9rem + 1vw, 1.6rem); letter-spacing: .16em; }
.ai-status p { max-width: 36rem; color: var(--ai-text-muted); }

/* =====================================================================================================
   Legal & information pages — readable first, minimal effects
   ===================================================================================================== */
.legal-page { padding: 1.5rem 0 2.5rem; }
.legal-page h1 { letter-spacing: .08em; }
.legal-meta { color: var(--ai-text-muted); font-size: .9rem; }
.legal-summary { background: var(--ai-panel); border: 1px solid var(--ai-border); border-inline-start: 3px solid var(--ai-violet-soft); padding: 1rem 1.25rem; }
.legal-summary h2 { letter-spacing: .14em; }
.legal-toc { background: var(--ai-panel); border: 1px solid var(--ai-border); padding: 1rem 1.25rem; }
.legal-toc ul { columns: 2; column-gap: 2rem; font-size: .9rem; }
@media (max-width: 575.98px) { .legal-toc ul { columns: 1; } }
.legal-body { line-height: 1.7; font-size: 1rem; }
.legal-body section { margin-bottom: 1.9rem; scroll-margin-top: 80px; }
.legal-body h2 { font-size: 1.12rem; font-weight: 600; letter-spacing: .06em; margin-bottom: .65rem; padding-bottom: .4rem; border-bottom: 1px solid var(--ai-border-soft); }
.legal-body h3 { font-size: 1rem; text-transform: none; letter-spacing: .02em; }
.legal-body p, .legal-body li, .legal-body dd { color: var(--ai-text-secondary); }
.legal-callout { background: rgba(251, 191, 36, .06); border: 1px solid rgba(251, 191, 36, .32); border-inline-start: 3px solid var(--ai-warning); padding: .85rem 1rem; }
.legal-columns { columns: 2; column-gap: 2rem; }
@media (max-width: 575.98px) { .legal-columns { columns: 1; } }
.legal-definitions { display: grid; gap: .6rem; margin: 0 0 1rem; }
.legal-definition { background: var(--ai-panel); border: 1px solid var(--ai-border); border-inline-start: 3px solid var(--ai-violet-soft); padding: .7rem 1rem; }
.legal-definition.cashable { border-inline-start-color: var(--ai-usd); }
.legal-definition.prepaid { border-inline-start-color: var(--ai-warning); border-inline-start-style: dashed; }
.legal-definition dt { font-weight: 600; margin-bottom: .2rem; color: var(--ai-text); }
.legal-definition dd { margin: 0; font-size: .92rem; }
.legal-list dt { font-weight: 600; color: var(--ai-text); }
.legal-list dd { margin-bottom: .5rem; }
.legal-card:hover, .legal-card:focus-visible { border-color: var(--ai-violet-soft); }
.legal-inequality { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; font-weight: 600; }
.legal-inequality span:not([aria-hidden]) { background: var(--ai-panel-elevated); border: 1px solid var(--ai-border); padding: .25rem .8rem; }
.reward-flow { display: grid; gap: .5rem; }
.reward-step { display: flex; gap: .75rem; align-items: flex-start; background: var(--ai-panel); border: 1px solid var(--ai-border); padding: .6rem .9rem; position: relative; }
.reward-step:not(:last-child)::after { content: "↓"; position: absolute; inset-inline-start: 1.55rem; bottom: -.95rem; color: var(--ai-violet-soft); font-size: .8rem; }
.reward-step-icon { width: 2rem; height: 2rem; flex: 0 0 2rem; display: grid; place-items: center; background: rgba(124, 58, 237, .16); border: 1px solid rgba(139, 92, 246, .45); color: var(--ai-violet-soft); }
.legal-contact { border-top: 1px solid var(--ai-border-soft); padding-top: 1.25rem; }

/* About page visuals */
.about-hero { --ai-hero-image: url("../images/game/hero/ai-hero-datacenter.svg"); padding-block: clamp(2rem, 1.5rem + 3vw, 4rem); }
.about-hero .ai-grid-floor { opacity: .5; }
.contact-header h1 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.4rem); }
.about-core { width: min(18rem, 70vw); margin-inline: auto; display: block; }
.about-timeline { display: grid; gap: .75rem; counter-reset: gen; }
.about-timeline li { list-style: none; position: relative; padding: .7rem 1rem .7rem 3.2rem; background: var(--ai-panel); border: 1px solid var(--ai-border); }
.about-timeline li::before { counter-increment: gen; content: counter(gen, upper-roman); position: absolute; inset-inline-start: .8rem; top: 50%; transform: translateY(-50%); width: 1.8rem; text-align: center; font-family: var(--ai-font-display); font-weight: 700; color: var(--ai-violet-soft); }

/* ---- Risk warnings: risk notice (Risk Disclosure), deposit IMPORTANT box, withdrawal check, crypto risk acknowledgement ---- */
.legal-callout--danger { background: rgba(var(--ai-danger-rgb), .07); border-color: rgba(var(--ai-danger-rgb), .38); border-inline-start-color: var(--ai-danger); }
.risk-notice,
.deposit-warning,
.withdraw-check {
    background: rgba(var(--ai-danger-rgb), .08);
    border: 1px solid rgba(var(--ai-danger-rgb), .42);
    border-inline-start: 4px solid var(--ai-danger);
    border-radius: var(--ai-radius-sm, .5rem);
    padding: 1rem 1.15rem;
    color: var(--bs-body-color);
}
.risk-notice__title,
.deposit-warning__title,
.withdraw-check__title {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--ai-danger);
    margin-bottom: .5rem;
}
.deposit-warning { font-size: .875rem; margin-bottom: .85rem; }
.withdraw-check__list dt { font-weight: 500; color: var(--bs-secondary-color); }
.withdraw-check__list dd { margin-bottom: .25rem; }
.risk-ack { border: 1px solid rgba(var(--ai-warning-rgb), .45); background: rgba(var(--ai-warning-rgb), .06); }
.risk-ack__title { color: var(--ai-warning); }
.risk-ack__list li { display: flex; gap: .5rem; align-items: baseline; margin-bottom: .35rem; }
.risk-ack__list .bi { color: var(--ai-warning); flex: none; }
.contact-channels dd a { word-break: break-all; }