/* Modern Login Interface 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;
    color: #333;
}

.login-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    max-width: 1200px;
    width: 100%;
    min-height: 600px;
}

.login-box {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    max-width: 500px;
    width: 100%;
    margin: 0 auto;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 10px;
}

.logo h1 {
    color: #333;
    font-size: 1.8em;
    font-weight: 700;
}

.subtitle {
    color: #666;
    font-size: 1.1em;
    line-height: 1.4;
}

.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.alert-error {
    background: #fee;
    color: #c53030;
    border: 1px solid #fed7d7;
}

.alert-success {
    background: #f0fff4;
    color: #2f855a;
    border: 1px solid #c6f6d5;
}

.alert-icon {
    font-size: 1.2em;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #333;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-icon {
    font-size: 1.1em;
}

.form-group input {
    padding: 15px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1em;
    transition: all 0.3s ease;
    background: #f8fafc;
}

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

.password-input {
    position: relative;
    display: flex;
    align-items: center;
}

.password-toggle {
    position: absolute;
    right: 15px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.1em;
    color: #666;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #333;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 10px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500;
    color: #555;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid #e2e8f0;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background: #f8fafc;
}

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

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-weight: bold;
    font-size: 0.8em;
}

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

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

.login-button {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 10px;
}

.login-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.button-loader {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.login-footer {
    margin-top: 30px;
}

.divider {
    text-align: center;
    margin: 20px 0;
    position: relative;
    color: #999;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: #e2e8f0;
    z-index: 1;
}

.divider span {
    background: white;
    padding: 0 15px;
    position: relative;
    z-index: 2;
}

.alternative-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.register-link, .demo-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 20px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.register-link:hover, .demo-link:hover {
    border-color: #667eea;
    background: white;
    color: #667eea;
    transform: translateY(-1px);
}

.link-icon {
    font-size: 1.1em;
}

.security-info {
    text-align: center;
    color: #999;
    font-size: 0.9em;
}

/* Sidebar Styles */
.login-sidebar {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    color: white;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-highlights h2 {
    margin-bottom: 25px;
    font-size: 1.5em;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.feature-icon {
    font-size: 2em;
    min-width: 50px;
}

.feature-content h3 {
    margin-bottom: 5px;
    font-size: 1.1em;
}

.feature-content p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.4;
    font-size: 0.95em;
}

.system-stats {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px;
}

.system-stats h3 {
    margin-bottom: 20px;
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
}

.stat-value {
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.9em;
    color: rgba(255, 255, 255, 0.8);
}

/* Responsive Design */
@media (max-width: 768px) {
    .login-container {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 10px;
    }
    
    .login-box {
        padding: 30px 20px;
    }
    
    .login-sidebar {
        order: -1;
        padding: 20px;
    }
    
    .feature-highlights {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    
    .stat-item {
        padding: 10px 5px;
    }
    
    .stat-value {
        font-size: 1.2em;
    }
    
    .stat-label {
        font-size: 0.8em;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .login-box {
        padding: 20px;
    }
    
    .logo h1 {
        font-size: 1.5em;
    }
    
    .form-options {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .alternative-actions {
        gap: 10px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .login-box {
        background: rgba(255, 255, 255, 0.95);
    }
}

/* Animation für Eingabefelder */
.form-group input:focus + .form-icon {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

/* Loading Animation */
.login-form.loading .form-group input {
    pointer-events: none;
    opacity: 0.7;
}

/* Success Animation */
.form-group.success input {
    border-color: #38a169;
    background: #f0fff4;
}

.form-group.error input {
    border-color: #e53e3e;
    background: #fee;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Hover-Effekte für bessere UX */
.form-group input:hover:not(:focus) {
    border-color: #cbd5e0;
    background: white;
}

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

/* Focus-Styles für Barrierefreiheit */
.login-button:focus,
.register-link:focus,
.demo-link:focus,
.forgot-password:focus {
    outline: 3px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
}