/**
 * SliceHub Hub — centrum lokalu (login hasłem + skróty modułów)
 */
:root {
    --hub-bg: #0a0e14;
    --hub-surface: #111827;
    --hub-border: rgba(255, 255, 255, 0.08);
    --hub-text: #f1f5f9;
    --hub-muted: #94a3b8;
    --hub-accent: #3b82f6;
    --hub-radius: 14px;
    --font: 'Inter', system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body {
    margin: 0;
    min-height: 100%;
    font-family: var(--font);
    background: var(--hub-bg);
    color: var(--hub-text);
    -webkit-tap-highlight-color: transparent;
}

.hub-hidden { display: none !important; }

/* Login */
#hub-login {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.hub-logo {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(145deg, #dc2626, #991b1b);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    margin-bottom: 12px;
}
.hub-login-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.hub-login-sub {
    color: var(--hub-muted);
    font-size: 14px;
    margin-bottom: 28px;
    text-align: center;
    max-width: 320px;
}
.hub-form {
    width: 100%;
    max-width: 360px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.hub-form label {
    font-size: 12px;
    color: var(--hub-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.hub-form input {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--hub-border);
    background: var(--hub-surface);
    color: var(--hub-text);
    font-size: 16px;
}
.hub-form input:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.5);
}
.hub-btn {
    margin-top: 8px;
    padding: 14px;
    border: none;
    border-radius: 10px;
    background: var(--hub-accent);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
}
.hub-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.hub-err {
    color: #f87171;
    font-size: 13px;
    min-height: 1.2em;
}

/* Dashboard */
#hub-dash {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.hub-top {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--hub-border);
    background: rgba(17, 24, 39, 0.95);
}
.hub-top-title {
    font-weight: 700;
    font-size: 15px;
}
.hub-top-meta {
    flex: 1;
    font-size: 13px;
    color: var(--hub-muted);
}
.hub-top-logout {
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid var(--hub-border);
    background: transparent;
    color: var(--hub-text);
    font-size: 13px;
    cursor: pointer;
}
.hub-main {
    flex: 1;
    padding: 20px;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}
.hub-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--hub-muted);
    margin-bottom: 12px;
}
.hub-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}
.hub-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 18px;
    border-radius: var(--hub-radius);
    border: 1px solid var(--hub-border);
    background: var(--hub-surface);
    text-decoration: none;
    color: var(--hub-text);
    transition: border-color 0.15s, background 0.15s;
}
.hub-card:hover {
    border-color: rgba(59, 130, 246, 0.35);
    background: #1e293b;
}
.hub-card--primary {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, #1e3a5f 0%, #111827 100%);
    border-color: rgba(59, 130, 246, 0.25);
}
.hub-card-icon {
    font-size: 22px;
    opacity: 0.9;
}
.hub-card h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
}
.hub-card p {
    margin: 0;
    font-size: 12px;
    color: var(--hub-muted);
    line-height: 1.35;
}
.hub-card-arrow {
    font-size: 18px;
    color: var(--hub-muted);
}