/* ============================================
   WORLD-CLASS THEME SYSTEM
   Advanced CSS with Custom Properties
   Dark Theme with Vibrant Green Accents
   ============================================ */

:root {
    /* === Color System === */
    /* Primary Colors - Green Theme */
    --color-primary: #00ff88;
    --color-primary-dark: #00cc6a;
    --color-primary-light: #33ffaa;
    --color-primary-glow: rgba(0, 255, 136, 0.3);
    
    /* Secondary Colors - Blue Accents */
    --color-secondary: #00d4ff;
    --color-secondary-dark: #00a8cc;
    --color-secondary-light: #33ddff;
    
    /* Background Colors - Dark Theme */
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1624;
    --bg-tertiary: #151b2e;
    --bg-card: rgba(21, 27, 46, 0.8);
    --bg-card-hover: rgba(21, 27, 46, 0.95);
    --bg-glass: rgba(15, 22, 36, 0.7);
    --bg-glass-hover: rgba(15, 22, 36, 0.9);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b8c5d6;
    --text-tertiary: #8a9ba8;
    --text-muted: #6b7a8a;
    
    /* Accent Colors */
    --accent-success: #00ff88;
    --accent-warning: #ffb800;
    --accent-error: #ff4757;
    --accent-info: #00d4ff;
    
    /* Border Colors */
    --border-primary: rgba(0, 255, 136, 0.2);
    --border-secondary: rgba(0, 212, 255, 0.15);
    --border-muted: rgba(255, 255, 255, 0.1);
    
    /* Shadow System */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 64px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --shadow-glow-strong: 0 0 40px var(--color-primary-glow);
    
    /* Gradient System */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-dark: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    --gradient-card: linear-gradient(135deg, rgba(0, 255, 136, 0.1) 0%, rgba(0, 212, 255, 0.1) 100%);
    --gradient-glow: radial-gradient(circle at center, var(--color-primary-glow) 0%, transparent 70%);
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Consolas', monospace;
    
    /* Spacing System */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index Layers */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
    --z-notification: 500;
}

/* ============================================
   BASE STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 255, 136, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Animated Background Particles */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, var(--color-primary-glow), transparent),
        radial-gradient(2px 2px at 60% 70%, var(--color-secondary), transparent),
        radial-gradient(1px 1px at 50% 50%, var(--color-primary), transparent),
        radial-gradient(1px 1px at 80% 10%, var(--color-secondary), transparent),
        radial-gradient(2px 2px at 90% 60%, var(--color-primary-glow), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    animation: particleMove 20s linear infinite;
    opacity: 0.3;
    pointer-events: none;
    z-index: 0;
}

@keyframes particleMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-200px, -200px); }
}

/* ============================================
   GLASSMORPHISM CARDS
   ============================================ */

.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-card);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.glass-card:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-4px);
}

.glass-card:hover::before {
    opacity: 1;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    margin-bottom: var(--spacing-md);
}

p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   BUTTONS - Advanced Styling
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow-strong);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--bg-glass-hover);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.btn-success {
    background: var(--accent-success);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--accent-error);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-warning {
    background: var(--accent-warning);
    color: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   INPUTS & FORMS
   ============================================ */

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

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
    background: var(--bg-secondary);
}

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

/* ============================================
   STAT CARDS - Advanced Design
   ============================================ */

.stat-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

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

.stat-card:hover {
    border-color: var(--border-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-4px);
}

.stat-value {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* ============================================
   TABS - Modern Design
   ============================================ */

.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border-muted);
    padding-bottom: var(--spacing-sm);
}

.tab {
    padding: var(--spacing-md) var(--spacing-xl);
    background: transparent;
    border: none;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    font-family: var(--font-primary);
    font-size: 1rem;
}

.tab::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.tab:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.tab.active {
    color: var(--color-primary);
}

.tab.active::after {
    width: 100%;
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */

.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
    backdrop-filter: blur(10px);
    animation: slideIn 0.3s ease-out;
}

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

.alert-success {
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--accent-success);
    color: var(--accent-success);
}

.alert-error {
    background: rgba(255, 71, 87, 0.1);
    border-color: var(--accent-error);
    color: var(--accent-error);
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--accent-info);
    color: var(--accent-info);
}

/* ============================================
   BADGES & STATUS INDICATORS
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: rgba(0, 255, 136, 0.2);
    color: var(--accent-success);
    border: 1px solid var(--accent-success);
}

.badge-error {
    background: rgba(255, 71, 87, 0.2);
    color: var(--accent-error);
    border: 1px solid var(--accent-error);
}

.badge-warning {
    background: rgba(255, 184, 0, 0.2);
    color: var(--accent-warning);
    border: 1px solid var(--accent-warning);
}

.badge-info {
    background: rgba(0, 212, 255, 0.2);
    color: var(--accent-info);
    border: 1px solid var(--accent-info);
}

/* ============================================
   LOADING & ANIMATIONS
   ============================================ */

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

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

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px var(--color-primary-glow); }
    50% { box-shadow: 0 0 40px var(--color-primary-glow), 0 0 60px var(--color-primary-glow); }
}

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

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    :root {
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .glass-card {
        border-radius: var(--radius-md);
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.glow-effect {
    box-shadow: var(--shadow-glow);
}

.glow-effect-strong {
    box-shadow: var(--shadow-glow-strong);
    animation: glow 2s ease-in-out infinite;
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */

.container {
    display: flex;
    gap: var(--spacing-xl);
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    position: relative;
    z-index: var(--z-base);
}

.sidebar {
    width: 280px;
    min-width: 280px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    height: fit-content;
    position: sticky;
    top: var(--spacing-xl);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transition: all var(--transition-base);
}

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

.sidebar-header h2 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--text-primary);
}

.sidebar-toggle {
    background: transparent;
    border: 1px solid var(--border-muted);
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-base);
    display: block;
    z-index: 10;
}

.sidebar-toggle:hover {
    border-color: var(--border-primary);
    background: var(--bg-glass-hover);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.sidebar-nav a,
.sidebar-nav a:link,
.sidebar-nav a:visited,
.sidebar-nav a:hover,
.sidebar-nav a:active,
.sidebar-nav a:focus {
    text-decoration: none !important;
    text-underline-offset: 0 !important;
    text-decoration-line: none !important;
    text-decoration-style: none !important;
    text-decoration-color: transparent !important;
    border: none !important;
    border-bottom: none !important;
    outline: none !important;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary) !important;
    text-decoration: none !important;
    text-underline-offset: 0 !important;
    text-decoration-line: none !important;
    text-decoration-style: none !important;
    text-decoration-color: transparent !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: none !important;
    border-bottom: none !important;
    outline: none;
    background: transparent;
}

.nav-item:link,
.nav-item:visited,
.nav-item:hover,
.nav-item:active,
.nav-item:focus {
    text-decoration: none !important;
    text-underline-offset: 0 !important;
    text-decoration-line: none !important;
    text-decoration-style: none !important;
    text-decoration-color: transparent !important;
    color: var(--text-secondary) !important;
    border: none !important;
    border-bottom: none !important;
    outline: none !important;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: transform var(--transition-base);
}

.nav-item:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary) !important;
    transform: translateX(4px);
    text-decoration: none !important;
}

.nav-item:hover::before {
    transform: scaleY(1);
}

.nav-item.active {
    background: var(--bg-glass-hover);
    color: var(--color-primary) !important;
    border-left: 3px solid var(--color-primary);
    text-decoration: none !important;
}

.nav-item.active:link,
.nav-item.active:visited,
.nav-item.active:hover,
.nav-item.active:active,
.nav-item.active:focus {
    color: var(--color-primary) !important;
    text-decoration: none !important;
}

.nav-item.active::before {
    transform: scaleY(1);
}

.nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.nav-text {
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none !important;
    text-underline-offset: 0 !important;
    text-decoration-line: none !important;
    text-decoration-style: none !important;
    text-decoration-color: transparent !important;
    color: inherit;
    border: none !important;
    border-bottom: none !important;
}

.nav-divider {
    height: 1px;
    background: var(--border-muted);
    margin: var(--spacing-md) 0;
}

.main-content {
    flex: 1;
    min-width: 0;
}

.sidebar.collapsed {
    width: 0 !important;
    min-width: 0 !important;
    max-width: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow: hidden !important;
    opacity: 0 !important;
    transform: translateX(-100%) !important;
    border: none !important;
    visibility: hidden !important;
}

.sidebar.collapsed *:not(.sidebar-toggle) {
    display: none !important;
    visibility: hidden !important;
}

.sidebar.collapsed .sidebar-toggle,
body > .sidebar-toggle {
    display: block !important;
    position: fixed !important;
    left: 10px !important;
    top: 10px !important;
    z-index: 10000 !important;
    visibility: visible !important;
    opacity: 1 !important;
    background: var(--bg-glass) !important;
    border: 1px solid var(--border-primary) !important;
    width: 40px !important;
    height: 40px !important;
    min-width: 40px !important;
    min-height: 40px !important;
    padding: 8px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
}

@media (max-width: 1024px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        position: relative;
        top: 0;
    }
    
    .sidebar-toggle {
        display: block;
    }
}