:root {
    /* Light theme colors */
    --bg-primary-light: #ffffff;
    --bg-secondary-light: #f8fafc;
    --bg-card-light: #ffffff;
    --text-primary-light: #1e293b;
    --text-secondary-light: #64748b;
    --border-light: #e2e8f0;
    --accent-light: #3b82f6;
    --accent-hover-light: #2563eb;
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --accent-glow-light: rgba(59, 130, 246, 0.3);
    
    /* Dark theme colors */
    --bg-primary-dark: #0f172a;
    --bg-secondary-dark: #1e293b;
    --bg-card-dark: #334155;
    --text-primary-dark: #f1f5f9;
    --text-secondary-dark: #94a3b8;
    --border-dark: #475569;
    --accent-dark: #06b6d4;
    --accent-hover-dark: #0891b2;
    --shadow-dark: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --accent-glow-dark: rgba(6, 182, 212, 0.3);
    
    /* Current theme variables */
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --bg-card: var(--bg-card-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border: var(--border-dark);
    --accent: var(--accent-dark);
    --accent-hover: var(--accent-hover-dark);
    --shadow: var(--shadow-dark);
    --accent-glow: var(--accent-glow-dark);
    --glass-bg: rgba(15, 20, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] {
    --bg-primary: var(--bg-primary-light);
    --bg-secondary: var(--bg-secondary-light);
    --bg-card: var(--bg-card-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --border: var(--border-light);
    --accent: var(--accent-light);
    --accent-hover: var(--accent-hover-light);
    --shadow: var(--shadow-light);
    --accent-glow: var(--accent-glow-light);
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(226, 232, 240, 0.8);
}

[data-theme="dark"] {
    --bg-primary: var(--bg-primary-dark);
    --bg-secondary: var(--bg-secondary-dark);
    --bg-card: var(--bg-card-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border: var(--border-dark);
    --accent: var(--accent-dark);
    --accent-hover: var(--accent-hover-dark);
    --shadow: var(--shadow-dark);
    --accent-glow: var(--accent-glow-dark);
    --glass-bg: rgba(15, 20, 30, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 5px;
    border: 2px solid var(--bg-secondary);
}

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

/* For Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--bg-secondary);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

/* Particle Canvas */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

/* Header Styles */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.logo-text h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin: 0;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--accent);
}

.theme-toggle i {
    position: absolute;
    transition: all 0.3s ease;
}

[data-theme="light"] .theme-toggle .fa-sun {
    opacity: 1;
    transform: rotate(0deg);
}

[data-theme="light"] .theme-toggle .fa-moon {
    opacity: 0;
    transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .fa-sun {
    opacity: 0;
    transform: rotate(-180deg);
}

[data-theme="dark"] .theme-toggle .fa-moon {
    opacity: 1;
    transform: rotate(0deg);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* Layout Container & Blocks Sidebar */
.layout-container {
    display: flex;
    flex: 1;
    max-width: 1600px;
    margin: 0 auto;
    padding: 2rem;
    gap: 2rem;
    width: 100%;
}

.blocks-sidebar {
    width: 320px;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-header i {
    color: var(--accent);
    font-size: 1.25rem;
}

.blocks-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: calc(100vh - 250px);
    overflow-y: auto;
    overflow-x: hidden; /* Hide horizontal scrollbar */
}

.blocks-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.block-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.block-item:hover {
    border-color: var(--accent);
    transform: translateX(4px);
    box-shadow: var(--shadow);
}

.block-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.block-height {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: var(--accent);
    font-size: 1rem;
}

.block-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-card);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.block-miner {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.block-miner-address {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.block-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.block-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Adjust main content when sidebar is present */
.layout-container .main-content {
    flex: 1;
    max-width: none;
    margin: 0;
    padding: 0;
}

/* Responsive */
@media (max-width: 1200px) {
    .layout-container {
        flex-direction: column;
        padding: 1rem;
    }
    .blocks-sidebar {
        width: 100%;
        position: static;
        max-height: none;
    }
    .blocks-list {
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        overflow-y: hidden;
        max-height: none;
        gap: 1rem;
        padding-bottom: 0.5rem;
    }
    .block-item {
        min-width: 240px;
        flex-shrink: 0;
    }
    .block-item:hover {
        transform: translateY(-4px);
    }
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.section-title i {
    color: var(--accent);
    font-size: 1.25rem;
}

/* Stats Section */
.stats-section {
    margin-bottom: 3rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    min-height: 120px;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-color: var(--accent);
}

.stat-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow);
}

.stat-content h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.address-link {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    display: block;
    max-width: 100%;
    white-space: normal;
    word-break: break-all;
    line-height: 1.2;
}

.address-link:hover {
    color: var(--accent-hover);
    text-decoration: underline;
    transform: translateX(2px);
}

/* Search Section */
.search-section {
    margin-bottom: 3rem;
}

.search-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.input-group:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-icon {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-btn {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow);
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
}

.search-btn:active {
    transform: translateY(0);
}

/* Miner Results */
.miner-results {
    margin-top: 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    display: none;
}

.miner-results.show {
    opacity: 1;
    transform: translateY(0);
    display: block;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.result-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
}

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

.result-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.result-content h4 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.result-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    display: block;
}

/* Footer */
.footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent);
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    min-height: 1.5em; /* Prevent height collapse during loading */
    display: inline-block; /* Maintain layout flow */
    min-width: 60px; /* Prevent width collapse */
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 1rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .input-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-btn {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        padding: 1.5rem 1rem;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo-section {
        gap: 0.75rem;
    }
    
    .logo-text h1 {
        font-size: 1.25rem;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .search-card {
        padding: 1.5rem;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

/* Shares Section */
.shares-section {
    margin-bottom: 3rem;
}

.shares-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

.shares-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.shares-count {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.shares-refresh {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

#shares-refresh-icon {
    color: var(--accent);
    transition: transform 0.3s ease;
}

#shares-refresh-icon.spinning {
    animation: spin 1s linear infinite;
}

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

.shares-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.shares-table-header {
    display: grid;
    grid-template-columns: 2fr 3fr 1fr 1.5fr;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.shares-list {
    max-height: 400px;
    overflow-y: auto;
}

.shares-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.shares-loading i {
    color: var(--accent);
    font-size: 1.25rem;
}

.share-item {
    display: grid;
    grid-template-columns: 2fr 3fr 1fr 1.5fr;
    gap: 1rem;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    transition: all 0.3s ease;
    font-size: 0.875rem;
}

.share-item:last-child {
    border-bottom: none;
}

.share-item:hover {
    background: var(--bg-card);
}

.share-col {
    display: flex;
    align-items: center;
    overflow: hidden;
}

.miner-id {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    color: var(--accent);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.share-hash {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    color: var(--text-primary);
    font-weight: 400;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.share-difficulty {
    color: var(--text-primary);
    font-weight: 600;
}

.share-time {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.shares-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--text-secondary);
    text-align: center;
}

.shares-empty i {
    font-size: 3rem;
    color: var(--accent);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.shares-empty h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.shares-empty p {
    font-size: 0.875rem;
    max-width: 300px;
}

/* Responsive Design for Shares */
@media (max-width: 768px) {
    .shares-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .shares-table-header,
    .share-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .shares-table-header {
        display: none;
    }
    
    .share-item {
        padding: 1rem;
        display: block;
    }
    
    .share-col {
        margin-bottom: 0.5rem;
    }
    
    .share-col::before {
        content: attr(data-label) ": ";
        font-weight: 600;
        color: var(--text-secondary);
        font-size: 0.75rem;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-right: 0.5rem;
    }
    
    .miner-col::before { content: "Miner ID"; }
    .hash-col::before { content: "Share Hash"; }
    .difficulty-col::before { content: "Difficulty"; }
    .time-col::before { content: "Time"; }
}

/* Interactive Bee Assistant */
.bee-container {
    position: fixed;
    bottom: 30px;
    right: 60px;
    z-index: 1000;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.bee-container:hover {
    transform: scale(1.1) rotate(-15deg);
}

.bee {
    width: 80px;
    height: 80px;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.2));
    animation: float 3s ease-in-out infinite;
}

.bee-wings {
    transform-origin: center;
    animation: flutter 0.2s linear infinite;
}

@keyframes flutter {
    0% { transform: scaleY(1); }
    50% { transform: scaleY(0.8); }
    100% { transform: scaleY(1); }
}

.speech-bubble {
    position: absolute;
    bottom: 100%;
    right: 50%;
    transform: translateX(50%);
    background: var(--bg-card);
    border: 2px solid var(--accent);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    margin-bottom: 10px;
    box-shadow: var(--shadow);
    pointer-events: none;
    z-index: 1001;
}

.speech-bubble::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    background: var(--bg-card);
    border-right: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
}

.bee-container.speaking .speech-bubble {
    opacity: 1;
    visibility: visible;
    transform: translateX(50%) translateY(-5px);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}