:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --warning-color: #ed8936;
    --danger-color: #f56565;
    --dark-bg: #1a202c;
    --card-bg: #2d3748;
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --border-color: #4a5568;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #2a3441 100%);
    color: var(--text-primary);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-warning {
    background: var(--warning-color);
    color: white;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

select {
    padding: 0.75rem;
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 1rem;
}

.view-toggle {
    margin-left: auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.view-toggle:hover {
    background: var(--border-color);
}

.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.client-container {
    width: 100%;
}

.client-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.client-list-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    overflow-x: auto;
}

.client-list-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.client-list-item.expiring {
    border-left: 4px solid var(--warning-color);
}

.client-list-item.expired {
    border-left: 4px solid var(--danger-color);
}

.client-list-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.client-list-info h4 {
    margin: 0;
    color: var(--text-primary);
    min-width: 150px;
}

.client-list-meta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.client-list-meta span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    white-space: nowrap;
}

.client-list-actions {
    display: flex;
    gap: 0.5rem;
}

.client-list-actions .btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
}

.client-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.client-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.platform-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.platform-netflix { background: #e50914; }
.platform-disney { background: #006ba6; }
.platform-hbo { background: #8b5cf6; }
.platform-amazon { background: #ff9900; }
.platform-iptv { background: #10b981; }
.platform-chatgpt { background: #10a37f; }
.platform-spotify { background: #1db954; }

.client-info h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.client-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0;
}

.client-meta span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.client-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.client-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--card-bg);
    margin: 5% auto;
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.close:hover {
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

input, select {
    width: 100%;
    padding: 0.75rem;
    border-radius: 8px;
    background: var(--dark-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.dashboard-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

.dashboard-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.dashboard-card.warning {
    border-left: 4px solid var(--warning-color);
}

.dashboard-card.danger {
    border-left: 4px solid var(--danger-color);
}

.dashboard-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.dashboard-card.warning .dashboard-icon {
    background: linear-gradient(135deg, var(--warning-color), #f6ad55);
}

.dashboard-card.danger .dashboard-icon {
    background: linear-gradient(135deg, var(--danger-color), #fc8181);
}

.dashboard-content h2 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.dashboard-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.notification-btn {
    background: linear-gradient(135deg, var(--warning-color), #f6ad55);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    display: none;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
    animation: pulse 2s infinite;
}

.notification-btn.show {
    display: inline-flex;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(237, 137, 54, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(237, 137, 54, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(237, 137, 54, 0);
    }
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.2rem;
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #2a3441 100%);
    padding: 2rem;
}

.login-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-secondary);
}

.error-message {
    color: var(--danger-color);
    text-align: center;
    margin-top: 1rem;
    padding: 0.5rem;
    background: rgba(245, 101, 101, 0.1);
    border-radius: 8px;
}

.login-btn {
    width: 100%;
    justify-content: center;
    margin-top: 1rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .client-grid {
        grid-template-columns: 1fr;
    }
    
    header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .filters {
        flex-direction: column;
    }
    
    .client-list-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .client-list-info {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .client-list-meta {
        flex-direction: column;
        align-items: stretch;
        gap: 0.25rem;
    }
    
    .client-list-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .login-container {
        padding: 1rem;
    }
    
    .login-form {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .dashboard-card {
        padding: 1.5rem;
    }
    
    .dashboard-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .header-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .header-actions .btn {
        justify-content: center;
    }
}