:root {
    --brand-primary: #4f46e5;
    --brand-hover: #4338ca;
    --bg-color: #0f172a;
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    color: #0f172a;
}

.auth-container {
    width: 100%;
    max-width: 440px;
}

.auth-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 36px 32px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.brand-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.brand-logo {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #ffffff;
    box-shadow: 0 8px 16px rgba(79, 70, 229, 0.35);
}

.brand-title {
    font-size: 20px;
    font-weight: 800;
    color: #0f172a;
    letter-spacing: -0.5px;
}

.brand-subtitle {
    font-size: 12px;
    color: #64748b;
    font-weight: 500;
}

.form-title {
    font-size: 18px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 6px;
}

.form-subtitle {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 12.5px;
    font-weight: 700;
    color: #334155;
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 11px 14px;
    border-radius: 10px;
    border: 1.5px solid #e2e8f0;
    font-size: 13.5px;
    font-family: inherit;
    outline: none;
    transition: all 0.2s;
    background: #f8fafc;
}

.form-control:focus {
    background: #ffffff;
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.btn-submit {
    width: 100%;
    padding: 12px;
    background: var(--brand-primary);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}

.btn-submit:hover {
    background: var(--brand-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.4);
}

.demo-account-box {
    background: #f1f5f9;
    border: 1px dashed #cbd5e1;
    border-radius: 12px;
    padding: 12px 14px;
    margin-top: 20px;
    font-size: 12px;
    color: #475569;
}

@media (max-width: 480px) {
    .auth-card {
        padding: 26px 20px;
        border-radius: 20px;
    }
}