/* =========================================================
   Nekoh.it — Design system condiviso
   Caricato da OGNI pagina del sito (tranne /studio). Definisce:
   - i token canonici di colore (dark di default, light in override)
   - l'estetica "glass" ispirata a /coralmc/auth
   - la navbar arricchita (quicklinks centrali + toggle tema)
   Ogni foglio di stile "figlio" (style.css, auth.css, smp/style.css,
   frontend_discord_bot/style.css) alias le proprie variabili locali a
   questi token, cosi' il toggle chiaro/scuro propaga ovunque senza
   dover riscrivere migliaia di regole per pagina.
   ========================================================= */

:root {
    --nk-bg: #081018;
    --nk-bg-alt: #0d1723;
    --nk-surface: rgba(17, 25, 38, 0.86);
    --nk-surface-soft: rgba(22, 31, 46, 0.82);
    --nk-surface-solid: #101a26;
    --nk-surface-solid-alt: #0b141f;
    --nk-border: rgba(148, 163, 184, 0.18);
    --nk-border-strong: rgba(56, 189, 248, 0.32);
    --nk-text: #edf4fb;
    --nk-text-secondary: #c2d0e0;
    --nk-muted: #94a6bb;
    --nk-accent: #38d9a9;
    --nk-accent-2: #38bdf8;
    --nk-on-accent: #041016;
    --nk-neutral: #24344a;
    --nk-neutral-hover: #304763;
    --nk-danger: #ef4444;
    --nk-danger-strong: #f87171;
    --nk-warning: #f59e0b;
    --nk-success: #22c55e;
    --nk-info: #38bdf8;
    --nk-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
    --nk-overlay: rgba(4, 8, 14, 0.6);
    --nk-radius-sm: 10px;
    --nk-radius: 16px;
    --nk-radius-lg: 22px;
    --nk-radius-xl: 26px;
    color-scheme: dark;
}

:root[data-theme="light"] {
    --nk-bg: #f5f7fb;
    --nk-bg-alt: #eef3f9;
    --nk-surface: rgba(255, 255, 255, 0.9);
    --nk-surface-soft: rgba(238, 243, 249, 0.92);
    --nk-surface-solid: #ffffff;
    --nk-surface-solid-alt: #f3f6fb;
    --nk-border: #d7e0ea;
    --nk-border-strong: rgba(37, 99, 235, 0.35);
    --nk-text: #172033;
    --nk-text-secondary: #334155;
    --nk-muted: #5a6575;
    --nk-accent: #2563eb;
    --nk-accent-2: #0369a1;
    --nk-on-accent: #ffffff;
    --nk-neutral: #334155;
    --nk-neutral-hover: #1f2937;
    --nk-danger: #b91c1c;
    --nk-danger-strong: #991b1b;
    --nk-warning: #b45309;
    --nk-success: #15803d;
    --nk-info: #2563eb;
    --nk-shadow: 0 18px 50px rgba(15, 23, 42, 0.1);
    --nk-overlay: rgba(15, 23, 42, 0.55);
    color-scheme: light;
}

/* Transizione morbida quando si cambia tema, senza animare al primo paint
   (il tag html porta .nk-theme-ready solo dopo l'inizializzazione di theme.js). */
html.nk-theme-ready,
html.nk-theme-ready body,
html.nk-theme-ready .topbar,
html.nk-theme-ready .panel,
html.nk-theme-ready .data-card {
    transition: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

/* ---------- Toggle chiaro/scuro ---------- */

.nk-theme-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    min-height: 44px;
    padding: 0;
    flex: 0 0 auto;
    border-radius: 999px;
    border: 1px solid var(--nk-border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--nk-text);
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

:root[data-theme="light"] .nk-theme-toggle {
    background: rgba(15, 23, 42, 0.04);
}

.nk-theme-toggle:hover {
    transform: translateY(-1px);
    border-color: var(--nk-border-strong);
}

.nk-theme-toggle:focus-visible {
    outline: 2px solid var(--nk-accent-2);
    outline-offset: 2px;
}

.nk-theme-toggle svg {
    position: absolute;
    width: 20px;
    height: 20px;
    transition: opacity 0.3s ease, transform 0.4s ease;
}

.nk-theme-toggle .nk-icon-sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.4);
    color: #ffb84d;
}

.nk-theme-toggle .nk-icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
    color: var(--nk-accent-2);
}

:root[data-theme="light"] .nk-theme-toggle .nk-icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

:root[data-theme="light"] .nk-theme-toggle .nk-icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.4);
}

.nk-theme-toggle-fixed {
    position: fixed;
    top: 18px;
    right: 18px;
    z-index: 999;
    background: var(--nk-surface);
    backdrop-filter: blur(14px);
    box-shadow: var(--nk-shadow);
}

/* ---------- Navbar centrale arricchita ---------- */

.nk-quicklinks {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1 1 auto;
    justify-content: center;
    flex-wrap: wrap;
}

.nk-nav-item {
    position: relative;
    display: inline-flex;
}

.nk-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 40px;
    padding: 0 14px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--nk-muted);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.nk-nav-link:hover,
.nk-nav-link:focus-visible,
.nk-nav-link.nk-active {
    text-decoration: none;
}

.nk-nav-link svg {
    width: 15px;
    height: 15px;
    flex: 0 0 auto;
    opacity: 0.85;
}

.nk-nav-link:hover,
.nk-nav-item.nk-open > .nk-nav-link {
    color: var(--nk-text);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--nk-border);
}

:root[data-theme="light"] .nk-nav-link:hover,
:root[data-theme="light"] .nk-nav-item.nk-open > .nk-nav-link {
    background: rgba(15, 23, 42, 0.05);
}

.nk-nav-link.nk-active {
    color: var(--nk-bg);
    background: linear-gradient(135deg, var(--nk-accent-2), var(--nk-accent));
    border-color: transparent;
}

.nk-nav-caret {
    width: 9px;
    height: 9px;
    margin-left: -2px;
    opacity: 0.7;
    transition: transform 0.18s ease;
}

.nk-nav-item.nk-open .nk-nav-caret {
    transform: rotate(180deg);
}

.nk-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    min-width: 220px;
    padding: 8px;
    display: grid;
    gap: 2px;
    border-radius: 16px;
    border: 1px solid var(--nk-border);
    background: var(--nk-surface-solid);
    box-shadow: var(--nk-shadow);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.16s ease, transform 0.16s ease, visibility 0.16s;
    z-index: 40;
}

.nk-nav-item.nk-open .nk-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.nk-dropdown a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border-radius: 10px;
    color: var(--nk-text);
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
}

.nk-dropdown a:hover {
    background: color-mix(in srgb, var(--nk-accent-2) 12%, transparent);
}

.nk-dropdown-icon {
    width: 30px;
    height: 30px;
    flex: 0 0 auto;
    border-radius: 9px;
    display: grid;
    place-items: center;
    font-size: 0.95rem;
    line-height: 1;
    color: var(--nk-on-accent);
    background: linear-gradient(135deg, var(--nk-accent-2), var(--nk-accent));
}

.nk-dropdown-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
}

.nk-dropdown a small {
    font-weight: 500;
    color: var(--nk-muted);
    font-size: 0.76rem;
}

@media (max-width: 900px) {
    .nk-quicklinks {
        order: 3;
        flex-basis: 100%;
        justify-content: flex-start;
        gap: 4px;
    }

    .nk-dropdown {
        left: 0;
        transform: translateY(4px);
    }

    .nk-nav-item.nk-open .nk-dropdown {
        transform: translateY(0);
    }
}