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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 450px;
}

.login-box {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 40px 30px;
    text-align: center;
}

.logo {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    backdrop-filter: blur(10px);
}

.logo i {
    font-size: 40px;
    color: #fff;
}

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

.login-header p {
    font-size: 14px;
    opacity: 0.9;
}

.login-form {
    padding: 40px 30px;
}

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

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

.form-group label i {
    margin-right: 8px;
    color: #667eea;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s;
    outline: none;
}

.form-group input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.password-input {
    position: relative;
}

.password-input input {
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 8px;
    transition: color 0.3s;
}

.toggle-password:hover {
    color: #667eea;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    width: 100%;
    padding: 14px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

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

.alert {
    padding: 14px 16px;
    border-radius: 8px;
    margin: 0 30px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.login-footer {
    background: #f8f9fa;
    padding: 20px 30px;
    text-align: center;
    border-top: 1px solid #e0e0e0;
}

.text-muted {
    color: #666;
    font-size: 13px;
}

.text-muted i {
    margin-right: 6px;
    color: #667eea;
}

.text-muted strong {
    color: #333;
    background: #e3e8ff;
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
}

@media (max-width: 480px) {
    .login-box {
        border-radius: 12px;
    }
    
    .login-header {
        padding: 30px 20px;
    }
    
    .login-form {
        padding: 30px 20px;
    }
    
    .alert {
        margin: 0 20px 20px;
    }
    
    .login-footer {
        padding: 15px 20px;
    }
}