/* ===== Theme tokens ===== */
:root, [data-theme="dark"] {
    --bg: #0b1020;
    --surface: rgba(255, 255, 255, 0.05);
    --surface-strong: rgba(255, 255, 255, 0.08);
    --border: rgba(255, 255, 255, 0.10);
    --text: #e6e9f5;
    --muted: #9aa3c0;
    --accent: #7c5cff;
    --accent-2: #22d3ee;
    --accent-3: #f472b6;
    --error: #fb7185;
    --ok: #34d399;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    --orb-opacity: .45;
}

[data-theme="light"] {
    --bg: #f5f7ff;
    --surface: rgba(255, 255, 255, 0.70);
    --surface-strong: rgba(255, 255, 255, 0.95);
    --border: rgba(20, 30, 80, 0.10);
    --text: #1a2040;
    --muted: #5b648a;
    --shadow: 0 10px 30px rgba(60, 70, 140, 0.12);
    --orb-opacity: .25;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    transition: background .3s, color .3s;
}

a { color: var(--accent-2); text-decoration: none; }
h1, h2, h3 { letter-spacing: -0.02em; }
code, pre, .io { font-family: "JetBrains Mono", Consolas, monospace; }

.gradient-text {
    background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.glass {
    background: var(--surface);
    border: 1px solid var(--border);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

/* ===== Animated background ===== */
.bg-orbs { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.orb {
    position: absolute; border-radius: 50%; filter: blur(90px); opacity: var(--orb-opacity);
    animation: float 18s ease-in-out infinite alternate;
}
.orb-1 { width: 480px; height: 480px; background: var(--accent); top: -120px; left: -100px; }
.orb-2 { width: 420px; height: 420px; background: var(--accent-2); bottom: -140px; right: -80px; animation-delay: -6s; }
.orb-3 { width: 320px; height: 320px; background: var(--accent-3); top: 40%; left: 55%; animation-delay: -12s; }

@keyframes float {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(60px, 40px) scale(1.15); }
}

/* ===== Top bar ===== */
.topbar {
    position: sticky; top: 0; z-index: 10;
    display: flex; align-items: center; gap: 1rem;
    padding: .75rem 1.5rem; border-width: 0 0 1px 0;
}
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 800; font-size: 1.25rem; color: var(--text); }
.logo {
    width: 38px; height: 38px;
    filter: drop-shadow(0 4px 12px rgba(124, 92, 255, .55));
    transition: transform .4s;
}
.brand:hover .logo { transform: rotate(60deg); }
.logo.big { width: 64px; height: 64px; animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { transform: scale(1.08); filter: drop-shadow(0 0 22px rgba(34, 211, 238, .7)); } }
.tagline { color: var(--muted); font-size: .9rem; flex: 1; }
.theme-toggle, .menu-btn {
    background: var(--surface-strong); border: 1px solid var(--border); color: var(--text);
    border-radius: 10px; width: 40px; height: 40px; cursor: pointer; font-size: 1.1rem;
    transition: transform .2s;
}
.theme-toggle:hover { transform: rotate(20deg) scale(1.08); }
.menu-btn { display: none; }

/* ===== Layout ===== */
.shell { display: flex; min-height: calc(100vh - 120px); }
.sidebar {
    position: sticky; top: 65px; align-self: flex-start;
    width: 240px; margin: 1rem; padding: .75rem; border-radius: 16px;
    display: flex; flex-direction: column; gap: 2px;
    max-height: calc(100vh - 90px); overflow-y: auto;
}
.nav-group {
    margin: .9rem .6rem .3rem; font-size: .7rem; font-weight: 600;
    text-transform: uppercase; letter-spacing: .12em; color: var(--muted);
}
.sidebar a {
    display: flex; align-items: center; gap: .6rem;
    padding: .5rem .7rem; border-radius: 10px; color: var(--text); font-size: .92rem;
    transition: background .2s, transform .2s;
}
.sidebar a:hover { background: var(--surface-strong); transform: translateX(3px); }
.sidebar a.active {
    background: linear-gradient(90deg, rgba(124, 92, 255, .35), rgba(34, 211, 238, .15));
    box-shadow: inset 3px 0 0 var(--accent);
}
.nav-icon {
    display: inline-grid; place-items: center; min-width: 28px; height: 28px; border-radius: 8px;
    background: var(--surface-strong); font-size: .75rem; font-weight: 600; font-family: "JetBrains Mono", monospace;
}

.content { flex: 1; padding: 1.5rem 2rem; max-width: 1100px; }
.page-enter { animation: fadeUp .35s ease-out; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.lead { color: var(--muted); }

/* ===== Hero ===== */
.hero { text-align: center; padding: 2rem 0 1.5rem; }
.hero-title { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; margin: .8rem 0 .5rem; line-height: 1.1; }
.pill {
    display: inline-block; padding: .35rem .9rem; border-radius: 999px; font-size: .85rem;
    background: var(--surface-strong); border: 1px solid var(--border); color: var(--muted);
}
.search { max-width: 520px; font-family: inherit; font-size: 1rem; padding: .9rem 1.1rem; border-radius: 14px; }
.section-title { margin: 2rem 0 .8rem; font-size: 1.1rem; color: var(--muted); font-weight: 600; }

/* ===== Cards ===== */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1rem; }
.card {
    position: relative; padding: 1.25rem; border-radius: 16px; color: var(--text); overflow: hidden;
    transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card::before {
    content: ""; position: absolute; inset: 0; opacity: 0; transition: opacity .25s;
    background: linear-gradient(135deg, rgba(124, 92, 255, .18), rgba(34, 211, 238, .10));
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--accent); }
.card:hover::before { opacity: 1; }
.card > * { position: relative; }
.card h3 { margin: .8rem 0 .3rem; font-size: 1.05rem; }
.card p { color: var(--muted); margin: 0; font-size: .9rem; }
.card-icon {
    display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: white;
    font-family: "JetBrains Mono", monospace; font-weight: 600;
}
.card-arrow { position: absolute; top: 1.2rem; right: 1.2rem; color: var(--muted); transition: transform .25s, color .25s; }
.card:hover .card-arrow { transform: translateX(4px); color: var(--accent-2); }

/* ===== Form controls ===== */
.io {
    width: 100%; padding: .8rem 1rem; margin: .5rem 0;
    background: var(--surface); color: var(--text);
    border: 1px solid var(--border); border-radius: 12px; font-size: .9rem;
    transition: border-color .2s, box-shadow .2s;
}
.io:focus, select:focus, input[type=number]:focus {
    outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 92, 255, .25);
}
.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin: .6rem 0; }
.toolbar label { display: flex; align-items: center; gap: .4rem; color: var(--muted); font-size: .9rem; }
select, .toolbar input[type=number] {
    background: var(--surface-strong); color: var(--text);
    border: 1px solid var(--border); border-radius: 8px; padding: .4rem .5rem; font-family: inherit;
}
select option { background: var(--bg); }
.toolbar input[type=number] { width: 80px; }
input[type=checkbox] { accent-color: var(--accent); width: 16px; height: 16px; }

.btn {
    background: linear-gradient(135deg, var(--accent), #5b8cff);
    color: white; border: 0; border-radius: 10px; padding: .55rem 1.1rem;
    font-weight: 600; font-family: inherit; cursor: pointer;
    box-shadow: 0 4px 14px rgba(124, 92, 255, .35);
    transition: transform .15s, box-shadow .15s, filter .15s;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.1); box-shadow: 0 6px 20px rgba(124, 92, 255, .5); }
.btn:active { transform: translateY(0); }
.btn.secondary { background: var(--surface-strong); color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.btn:disabled { opacity: .45; cursor: default; transform: none; }

.alert { padding: .7rem 1rem; border-radius: 12px; margin: .6rem 0; border: 1px solid; }
.alert.error { background: rgba(251, 113, 133, .10); color: var(--error); border-color: rgba(251, 113, 133, .3); }
.alert.ok { background: rgba(52, 211, 153, .10); color: var(--ok); border-color: rgba(52, 211, 153, .3); }

.code {
    background: var(--surface); border: 1px solid var(--border);
    padding: 1rem; border-radius: 12px; overflow: auto; white-space: pre-wrap; word-break: break-word;
}
mark { background: linear-gradient(90deg, #facc15, #fb923c); color: #111; border-radius: 3px; padding: 0 2px; }

.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th, .table td { text-align: left; padding: .55rem; border-bottom: 1px solid var(--border); }
.table tbody tr:hover { background: var(--surface); }

.footer { text-align: center; padding: 1.2rem; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--border); }

/* ===== Mobile ===== */
@media (max-width: 800px) {
    .menu-btn { display: inline-block; }
    .tagline { visibility: hidden; }
    .sidebar {
        position: fixed; top: 66px; left: 0; bottom: 0; z-index: 20; margin: 0; border-radius: 0 16px 16px 0;
        max-height: none; background: var(--bg); transform: translateX(-105%); transition: transform .3s;
    }
    .sidebar.open { transform: none; box-shadow: var(--shadow); }
    .content { padding: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
    *, .orb { animation: none !important; transition: none !important; }
}

/* ===== Splash & errors ===== */
.splash { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; position: relative; }
.splash .logo { position: absolute; top: calc(50% - 32px - 1.3rem); }
.loading-progress { width: 9rem; height: 9rem; }
.loading-progress circle { fill: none; stroke: var(--border); stroke-width: .5rem; transform-origin: 50% 50%; transform: rotate(-90deg); }
.loading-progress circle:last-child {
    stroke: var(--accent);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray .05s ease-in-out;
}
.loading-progress-text { margin-top: 1rem; color: var(--muted); font-weight: 600; }
.loading-progress-text:after { content: var(--blazor-load-percentage-text, "Loading"); }

#blazor-error-ui {
    background: #7f1d1d; color: white; bottom: 0; display: none; left: 0;
    padding: .6rem 1.25rem; position: fixed; width: 100%; z-index: 1000;
}
#blazor-error-ui .dismiss { cursor: pointer; position: absolute; right: .75rem; top: .5rem; }