:root {
    --color-primary: #00e5ff;
    --color-primary-dark: #00b8cc;
    --color-secondary: #7c4dff;
    --color-success: #00e676;
    --color-warning: #ffd600;
    --color-danger: #ff1744;
    --color-info: #2196f3;
    
    --bg-dark-1: #0a0a14;
    --bg-dark-2: #141424;
    --bg-dark-3: #1e1e2e;
    --bg-card: rgba(30, 30, 46, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.05);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(255, 255, 255, 0.2);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.4);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.35s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark-1) 0%, var(--bg-dark-2) 50%, var(--bg-dark-3) 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.modern-navbar {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.modern-navbar .container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modern-navbar .logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modern-navbar .nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.modern-navbar .nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    font-weight: 500;
}

.modern-navbar .nav-link:hover,
.modern-navbar .nav-link.active {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.modern-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.modern-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.modern-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color-hover);
}

.modern-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.modern-card-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.modern-card-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.modern-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.modern-grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.modern-grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.modern-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.modern-stat-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(30, 30, 46, 0.7) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.modern-stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.modern-stat-card:hover::before {
    opacity: 1;
}

.modern-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.modern-stat-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto var(--spacing-md);
}

.modern-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.modern-stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modern-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.modern-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.modern-btn:hover::before {
    width: 300px;
    height: 300px;
}

.modern-btn:active {
    transform: scale(0.98);
}

.modern-btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--bg-dark-1);
    box-shadow: 0 4px 16px rgba(0, 229, 255, 0.3);
}

.modern-btn-primary:hover {
    box-shadow: 0 6px 24px rgba(0, 229, 255, 0.4);
    transform: translateY(-2px);
}

.modern-btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary), #651fff);
    color: white;
    box-shadow: 0 4px 16px rgba(124, 77, 255, 0.3);
}

.modern-btn-secondary:hover {
    box-shadow: 0 6px 24px rgba(124, 77, 255, 0.4);
    transform: translateY(-2px);
}

.modern-btn-success {
    background: linear-gradient(135deg, var(--color-success), #00c853);
    color: white;
    box-shadow: 0 4px 16px rgba(0, 230, 118, 0.3);
}

.modern-btn-danger {
    background: linear-gradient(135deg, var(--color-danger), #d50000);
    color: white;
    box-shadow: 0 4px 16px rgba(255, 23, 68, 0.3);
}

.modern-btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.modern-btn-outline:hover {
    background: var(--color-primary);
    color: var(--bg-dark-1);
}

.modern-btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.modern-btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.125rem;
}

.modern-form-group {
    margin-bottom: var(--spacing-lg);
}

.modern-label {
    display: block;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.modern-input,
.modern-textarea,
.modern-select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-dark-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.modern-input:focus,
.modern-textarea:focus,
.modern-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.1);
}

.modern-input::placeholder,
.modern-textarea::placeholder {
    color: var(--text-muted);
}

.modern-textarea {
    resize: vertical;
    min-height: 100px;
}

.modern-checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-dark-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.modern-checkbox-wrapper:hover {
    background: var(--bg-dark-3);
    border-color: var(--border-color-hover);
}

.modern-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.modern-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modern-badge-primary {
    background: rgba(0, 229, 255, 0.2);
    color: var(--color-primary);
}

.modern-badge-success {
    background: rgba(0, 230, 118, 0.2);
    color: var(--color-success);
}

.modern-badge-warning {
    background: rgba(255, 214, 0, 0.2);
    color: var(--color-warning);
}

.modern-badge-danger {
    background: rgba(255, 23, 68, 0.2);
    color: var(--color-danger);
}

.modern-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.modern-table thead {
    background: var(--bg-dark-2);
}

.modern-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.modern-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.modern-table tr:hover td {
    background: var(--bg-dark-2);
    color: var(--text-primary);
}

.modern-alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid;
    margin-bottom: var(--spacing-lg);
}

.modern-alert-info {
    background: rgba(33, 150, 243, 0.1);
    border-color: var(--color-info);
    color: var(--color-info);
}

.modern-alert-success {
    background: rgba(0, 230, 118, 0.1);
    border-color: var(--color-success);
    color: var(--color-success);
}

.modern-alert-warning {
    background: rgba(255, 214, 0, 0.1);
    border-color: var(--color-warning);
    color: var(--color-warning);
}

.modern-alert-danger {
    background: rgba(255, 23, 68, 0.1);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.modern-loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--color-primary);
    animation: spin 0.8s linear infinite;
}

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

.modern-pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.modern-slide-in {
    animation: slideIn 0.3s ease-out;
}

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

@media (max-width: 768px) {
    .modern-navbar .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .modern-navbar .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .modern-container {
        padding: var(--spacing-md);
    }
    
    .modern-card {
        padding: var(--spacing-md);
    }
    
    .modern-grid-2,
    .modern-grid-3,
    .modern-grid-4 {
        grid-template-columns: 1fr;
    }
    
    .modern-btn {
        width: 100%;
    }
}