.login-container {
    max-width: 480px;
    margin: 3rem auto;
    padding: 0 1.5rem;
}
.login-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}
.login-header {
    background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    padding: 2rem;
    text-align: center;
    color: white;
}
.login-logo {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
}
.login-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}
.login-body {
    padding: 2rem;
}
.form-group-modern {
    margin-bottom: 1.5rem;
}
.form-label-modern {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: #374151;
    font-size: 0.875rem;
}
.form-control-modern {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #D1D5DB;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-control-modern:focus {
    outline: none;
    border-color: #DC2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}
.password-wrapper {
    position: relative;
}
.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #6B7280;
    cursor: pointer;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.password-toggle:hover {
    color: #374151;
}
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}
.checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}
.checkbox-wrapper label {
    margin: 0;
    cursor: pointer;
    user-select: none;
    font-size: 0.875rem;
    color: #374151;
}
.forgot-password-link {
    display: block;
    text-align: right;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    color: #DC2626;
    text-decoration: none;
}
.forgot-password-link:hover {
    text-decoration: underline;
}
.btn-login {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: #DC2626;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}
.btn-login:hover {
    background: #B91C1C;
    transform: translateY(-1px);
}
.btn-login:active {
    transform: translateY(0);
}
.alert-modern {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}
.alert-danger-modern {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}