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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: linear-gradient(135deg, #026cdf 0%, #ffffff 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 420px;
    padding: 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h1 {
    color: #333;
    font-size: 28px;
    margin-bottom: 8px;
    font-weight: 600;
}

.login-header p {
    color: #666;
    font-size: 14px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-size: 14px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: #026cdf;
    box-shadow: 0 0 0 3px rgba(2, 108, 223, 0.1);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #026cdf 0%, #0354b0 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-top: 8px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(2, 108, 223, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    display: none;
}

.alert.show {
    display: block;
}

.alert-error {
    background-color: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.alert-success {
    background-color: #efe;
    color: #3c3;
    border: 1px solid #cfc;
}

.user-info {
    display: none;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    margin-top: 20px;
}

.user-info.show {
    display: block;
}

.user-info h3 {
    color: #333;
    margin-bottom: 16px;
    font-size: 18px;
}

.user-detail {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid #dee2e6;
}

.user-detail:last-child {
    border-bottom: none;
}

.user-detail span:first-child {
    font-weight: 500;
    color: #666;
}

.user-detail span:last-child {
    color: #333;
}

.btn-logout {
    width: 100%;
    padding: 10px;
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 16px;
    transition: background 0.2s ease;
}

.btn-logout:hover {
    background: #c82333;
}

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    margin-left: 8px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.footer {
    text-align: center;
    margin-top: 24px;
    color: #999;
    font-size: 12px;
}