/* Reset and base styles */
* {
    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 */
.login-container {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
}

/* Header styles */
.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    color: #2d3748;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    color: #718096;
    font-size: 14px;
    font-weight: 400;
}

/* Form styles */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    color: #2d3748;
    font-size: 14px;
    font-weight: 500;
}

.form-group input {
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background-color: #ffffff;
}

.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;
}

/* Remember me and forgot password section */
.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 8px 0;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #667eea;
    cursor: pointer;
}

.remember-me label {
    color: #4a5568;
    font-size: 14px;
    cursor: pointer;
    user-select: none;
}

.forgot-password {
    color: #667eea;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #5a67d8;
    text-decoration: underline;
}

/* Login button */
.login-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 14px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
}

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

/* Footer */
.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.login-footer p {
    color: #718096;
    font-size: 14px;
}

.login-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.login-footer a:hover {
    color: #5a67d8;
    text-decoration: underline;
}

/* Responsive design */
@media (max-width: 480px) {
    body {
        padding: 16px;
    }
    
    .login-container {
        padding: 32px 24px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
    
    .form-group input {
        padding: 10px 14px;
    }
    
    .login-button {
        padding: 12px 20px;
        font-size: 15px;
    }
}

/* Focus states for accessibility */
.login-button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

.remember-me input[type="checkbox"]:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

/* Custom checkbox styling */
.remember-me input[type="checkbox"] {
    appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid #e2e8f0;
    border-radius: 3px;
    background-color: white;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remember-me input[type="checkbox"]:checked {
    background-color: #667eea;
    border-color: #667eea;
}

.remember-me input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 10px;
    font-weight: bold;
}

/* Smooth animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-container {
    animation: fadeIn 0.6s ease-out;
}

/* Error/success state styles (for future use) */
.form-group.error input {
    border-color: #e53e3e;
    box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.form-group.success input {
    border-color: #38a169;
    box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.1);
}