* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    color: #e2e8f0;
}

.container {
    width: 100%;
    max-width: 420px;
}

.card {
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    text-align: center;
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #f1f5f9;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #94a3b8;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.busy-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.busy-text {
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

label {
    display: block;
    text-align: left;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: #cbd5e1;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    margin-top: 0.35rem;
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    color: #f1f5f9;
    font-size: 1rem;
    transition: border-color 0.15s;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #3b82f6;
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 0.75rem;
    background: #3b82f6;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
    text-decoration: none;
    text-align: center;
}

.btn:hover { background: #2563eb; }

.btn-secondary {
    background: #475569;
    margin-top: 0.75rem;
}

.btn-secondary:hover { background: #64748b; }

.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    text-align: left;
}

.alert-error {
    background: #7f1d1d;
    color: #fecaca;
    border: 1px solid #991b1b;
}