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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 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: 440px;
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 48px 40px;
}

.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.logo-text {
    font-size: 36px;
    font-weight: 900;
    color: #1a202c;
    margin: 0 0 8px 0;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 16px;
    color: #718096;
    font-weight: 500;
}

.error-message {
    background: #fee;
    border: 1px solid #fcc;
    color: #c33;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    animation: shake 0.3s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

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

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

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
    color: #a0aec0;
}

.login-button {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

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

.footer-text {
    text-align: center;
    margin-top: 32px;
}

.footer-text p {
    font-size: 14px;
    color: #718096;
    margin: 4px 0;
}

.footer-text .version {
    font-size: 12px;
    color: #a0aec0;
}

@media (max-width: 480px) {
    .login-card {
        padding: 32px 24px;
    }
    
    .logo-text {
        font-size: 28px;
    }
    
    .logo-icon {
        width: 64px;
        height: 64px;
    }
}