:root {
    --bg: #0f1419;
    --panel: #161d26;
    --border: #2a3544;
    --text: #e7edf4;
    --muted: #8b9aab;
    --accent: #3d9cf0;
    --accent-hover: #5cb0fc;
    --danger: #e85d6c;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Inter", system-ui, sans-serif;
    background: radial-gradient(ellipse 120% 80% at 50% -20%, #1a2a3d 0%, var(--bg) 55%);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 2rem 2rem 1.75rem;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.auth-card h1 {
    margin: 0 0 0.35rem;
    font-size: 1.35rem;
    font-weight: 600;
}

.auth-card .subtitle {
    margin: 0 0 1.5rem;
    color: var(--muted);
    font-size: 0.9rem;
}

label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--muted);
    margin-bottom: 0.35rem;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(61, 156, 240, 0.2);
}

.btn-primary {
    width: 100%;
    padding: 0.7rem 1rem;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    margin-top: 0.25rem;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.error-msg {
    color: var(--danger);
    font-size: 0.85rem;
    margin: 0 0 1rem;
    min-height: 1.2rem;
}

/* Home hub */
body.hub-body {
    align-items: flex-start;
    padding-top: 3rem;
}

.hub-wrap {
    width: 100%;
    max-width: 880px;
    margin: 0 auto;
}

.hub-wrap h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 0.35rem;
}

.hub-wrap .lead {
    color: var(--muted);
    margin: 0 0 2rem;
    font-size: 0.95rem;
}

.hub-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.btn-ghost {
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--muted);
    font-size: 0.85rem;
    cursor: pointer;
    font-family: inherit;
}

.btn-ghost:hover {
    color: var(--text);
    border-color: var(--muted);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.25rem;
}

.hub-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.5rem 1.35rem;
    transition: border-color 0.15s, transform 0.15s;
}

.hub-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.hub-card .icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: rgba(61, 156, 240, 0.15);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.hub-card h2 {
    margin: 0 0 0.4rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.hub-card p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--muted);
    line-height: 1.45;
}