/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color System */
    --color-primary: #0F172A;
    --color-accent: #0EA5E9;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-purple: #8B5CF6;
    
    /* Slate Scale */
    --slate-50: #F8FAFC;
    --slate-100: #F1F5F9;
    --slate-200: #E2E8F0;
    --slate-300: #CBD5E1;
    --slate-400: #94A3B8;
    --slate-500: #64748B;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1E293B;
    --slate-900: #0F172A;
    
    /* Typography */
    --font-inter: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Roboto Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Variables */
body.dark {
    --bg-primary: var(--slate-900);
    --bg-secondary: var(--slate-800);
    --bg-tertiary: var(--slate-700);
    --text-primary: var(--slate-50);
    --text-secondary: var(--slate-300);
    --text-tertiary: var(--slate-400);
    --border-primary: var(--slate-700);
    --border-secondary: var(--slate-600);
}

/* Light Mode Variables */
body.light {
    --bg-primary: var(--slate-50);
    --bg-secondary: var(--slate-100);
    --bg-tertiary: var(--slate-200);
    --text-primary: var(--slate-900);
    --text-secondary: var(--slate-700);
    --text-tertiary: var(--slate-500);
    --border-primary: var(--slate-200);
    --border-secondary: var(--slate-300);
}

/* Base Typography */
body {
    font-family: var(--font-inter);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.font-inter { font-family: var(--font-inter); }
.font-mono { font-family: var(--font-mono); }

/* Layout Components */
.header-bar {
    background-color: var(--slate-800);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--slate-700);
}

.sidebar {
    background-color: var(--slate-800);
    border-right: 1px solid var(--slate-700);
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
}

.sidebar.open {
    transform: translateX(0);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

.main-content {
    background-color: var(--slate-900);
    min-height: calc(100vh - 4rem);
    transition: margin-left var(--transition-normal);
}

.section-content {
    padding: var(--spacing-xl);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Navigation */
.nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    color: var(--slate-300);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.1), transparent);
    transition: left var(--transition-normal);
}

.nav-link:hover::before {
    left: 100%;
}

.nav-link:hover,
.nav-link.active {
    background-color: var(--slate-700);
    color: white;
    transform: translateX(4px);
}

.nav-link.active {
    background-color: rgba(14, 165, 233, 0.1);
    color: var(--color-accent);
    border-left: 3px solid var(--color-accent);
}

/* Dashboard Cards */
.stat-card {
    background-color: var(--slate-800);
    border: 1px solid var(--slate-700);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-success));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-accent);
}

/* Form Elements */
.input-field {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--slate-700);
    border: 1px solid var(--slate-600);
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.input-field:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.select-field {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--slate-700);
    border: 1px solid var(--slate-600);
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.select-field-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--slate-700);
    border: 1px solid var(--slate-600);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.75rem;
    cursor: pointer;
}

.select-field:focus,
.select-field-sm:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent), var(--color-success));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-normal);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--slate-700);
    color: var(--slate-300);
    border: 1px solid var(--slate-600);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-secondary:hover {
    background-color: var(--slate-600);
    color: white;
    border-color: var(--slate-500);
    transform: translateY(-1px);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-download:hover {
    background-color: #0284C7;
    transform: scale(1.05);
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
}

.table-header {
    padding: var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--slate-300);
    background-color: var(--slate-700);
    border-bottom: 1px solid var(--slate-600);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.table-header:hover {
    background-color: var(--slate-600);
    color: white;
}

.table-row {
    border-bottom: 1px solid var(--slate-700);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.table-row:hover {
    background-color: var(--slate-700);
    transform: scale(1.01);
}

.table-cell {
    padding: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.table-row:hover .table-cell {
    color: var(--text-primary);
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.75rem;
    font-family: var(--font-mono);
}

.rank-1 { background: linear-gradient(135deg, #FFD700, #FFA500); color: var(--slate-900); }
.rank-2 { background: linear-gradient(135deg, #C0C0C0, #A0A0A0); color: var(--slate-900); }
.rank-3 { background: linear-gradient(135deg, #CD7F32, #8B4513); color: white; }
.rank-default { background: var(--slate-700); color: var(--slate-300); }

.score-high { color: var(--color-success); font-weight: 600; }
.score-medium { color: var(--color-warning); font-weight: 600; }
.score-low { color: var(--color-error); font-weight: 600; }

.change-positive {
    color: var(--color-success);
    background-color: rgba(16, 185, 129, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.change-negative {
    color: var(--color-error);
    background-color: rgba(239, 68, 68, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

.change-neutral {
    color: var(--slate-400);
    background-color: var(--slate-700);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
}

/* Chart Containers */
.chart-container {
    background-color: var(--slate-800);
    border: 1px solid var(--slate-700);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.chart-container canvas {
    max-width: 100%;
    height: auto;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 3rem;
    height: 1.5rem;
    cursor: pointer;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--slate-600);
    border-radius: 1.5rem;
    transition: var(--transition-normal);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 1.125rem;
    width: 1.125rem;
    left: 0.1875rem;
    bottom: 0.1875rem;
    background-color: white;
    border-radius: 50%;
    transition: var(--transition-normal);
}

input:checked + .toggle-slider {
    background-color: var(--color-accent);
}

input:checked + .toggle-slider:before {
    transform: translateX(1.5rem);
}

/* Sidebar Toggle Button */
.sidebar-toggle {
    display: none;
    padding: var(--spacing-sm);
    background: none;
    border: none;
    color: var(--slate-300);
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background-color: var(--slate-700);
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar-toggle {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .footer {
        margin-left: 0;
    }
    
    .section-content {
        padding: var(--spacing-lg);
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .chart-container {
        padding: var(--spacing-lg);
    }
}

@media (min-width: 768px) {
    .sidebar {
        transform: translateX(0);
    }
}

@media (max-width: 640px) {
    .table-header,
    .table-cell {
        padding: var(--spacing-md);
        font-size: 0.75rem;
    }
    
    .section-content {
        padding: var(--spacing-md);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Staggered Animation for Cards */
.stat-card:nth-child(1) { animation-delay: 0.1s; }
.stat-card:nth-child(2) { animation-delay: 0.2s; }
.stat-card:nth-child(3) { animation-delay: 0.3s; }
.stat-card:nth-child(4) { animation-delay: 0.4s; }

/* Report Items */
.report-item {
    transition: all var(--transition-fast);
    cursor: pointer;
}

.report-item:hover {
    transform: translateX(4px);
    background-color: var(--slate-700) !important;
}

/* Chart Tooltips */
.chart-tooltip {
    position: absolute;
    background: var(--slate-800);
    border: 1px solid var(--slate-600);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.75rem;
    color: white;
    pointer-events: none;
    z-index: 1000;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1rem;
    height: 1rem;
    margin: -0.5rem 0 0 -0.5rem;
    border: 2px solid var(--slate-600);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Status Indicators */
.status-online {
    color: var(--color-success);
}

.status-offline {
    color: var(--color-error);
}

.status-warning {
    color: var(--color-warning);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--slate-800);
}

::-webkit-scrollbar-thumb {
    background: var(--slate-600);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--slate-500);
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Print Styles */
@media print {
    .sidebar,
    .header-bar,
    .footer {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
        padding-top: 0;
    }
}

/* Focus Visible for Accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .stat-card {
        border-width: 2px;
    }
    
    .nav-link:hover,
    .nav-link.active {
        border: 2px solid var(--color-accent);
    }
}