:root {
    --light-bg: #ffffff;
    --light-text: #1a1a1a;
    --light-secondary: #666666;
    --light-border: #e0e0e0;
    --light-input-bg: #f5f5f5;
    --light-card-bg: #ffffff;
    --light-hover-bg: rgba(0, 0, 0, 0.05);

    --dark-bg: #0a0a0a;
    --dark-text: #ffffff;
    --dark-secondary: #cccccc;
    --dark-border: #2a2a2a;
    --dark-card-bg: #1a1a1a;
    --dark-input-bg: #2a2a2a;
    --dark-hover-bg: rgba(255, 255, 255, 0.1);

    --primary-color: #008cff;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    
    --gradient-blue: linear-gradient(135deg, #3b82f6, #2563eb);
    --gradient-hover: linear-gradient(135deg, #2563eb, #1d4ed8);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
}

body.dark-theme {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

body.light-theme {
    background-color: var(--light-bg);
    color: var(--light-text);

    & .navbar {
        background-color: var(--light-bg);
        border-bottom: 1px solid var(--light-border);
    }

    & .logo a {
        color: var(--light-text);
    }

    & .search-container input {
        background: var(--light-input-bg);
        border-color: var(--light-border);
        color: var(--light-text);
    }

    & .search-container input::placeholder {
        color: var(--light-secondary);
    }

    & .search-button {
        color: var(--light-secondary);
    }

    & .search-button:hover {
        color: var(--light-text);
    }

    & .theme-toggle button {
        color: var(--light-text);
    }

    & .theme-toggle button:hover {
        background: var(--light-hover-bg);
    }

    & .market-overview {
        background: var(--light-card-bg);
        border-bottom: 1px solid var(--light-border);
    }

    & .stat-item .label {
        color: var(--light-secondary);
    }

    & .coin-card {
        background: var(--light-card-bg);
        border: 1px solid var(--light-border);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    & .coin-card:hover {
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    & .coin-symbol {
        color: var(--light-secondary);
    }

    & .coin-stats {
        border-top: 1px solid var(--light-border);
    }

    & .stat .label {
        color: var(--light-secondary);
    }

    & .view-options button {
        border: 1px solid var(--light-border);
        color: var(--light-text);
        background: var(--light-bg);
    }

    & .view-options button:hover:not(.active) {
        background: var(--light-hover-bg);
    }

    & .view-options button.active {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }

    & footer {
        background: var(--light-bg);
        border-top: 1px solid var(--light-border);
    }

    & .footer-content {
        background: var(--light-bg);
    }

    & .footer-logo p {
        color: var(--light-secondary);
    }

    & .footer-links a,
    & .resources a {
        color: var(--light-secondary);
    }

    & .footer-links a:hover,
    & .resources a:hover {
        color: var(--primary-color);
    }

    & .social-links a {
        color: var(--light-secondary);
    }

    & .footer-bottom {
        border-top: 1px solid var(--light-border);
        color: var(--light-secondary);
        background: var(--light-bg);
    }
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2.5rem;
    background-color: var(--dark-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--dark-border);
}

.logo a {
    text-decoration: none;
    color: var(--dark-text);
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 2px;
    letter-spacing: -0.5px;
}

.logo-text {
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.logo-dot {
    color: var(--primary-color);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-container {
    position: relative;
    width: 300px;
}

.search-container input {
    width: 100%;
    padding: 0.6rem 3rem 0.6rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--dark-border);
    background: var(--dark-input-bg);
    color: var(--dark-text);
    font-size: 0.9rem;
}

.search-container input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-button {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    padding: 0 1rem;
    background: transparent;
    border: none;
    color: var(--dark-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
}

.search-button:hover {
    color: var(--dark-text);
}

.theme-toggle button {
    background: transparent;
    border: none;
    color: var(--dark-text);
    font-size: 1.2rem;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
}

.theme-toggle button:hover {
    background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem 1.5rem;
    }

    .header-right {
        gap: 0.5rem;
    }

    .search-container {
        width: 200px;
    }
}

@media (max-width: 480px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .header-right {
        width: 100%;
    }

    .search-container {
        width: 100%;
    }
}

.top-coins {
    padding: 2rem;
}

.coins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .search-container {
        width: 100%;
    }
}

.coin-card {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.coin-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.coin-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.coin-header img {
    width: 32px;
    height: 32px;
}

.coin-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.current-price {
    font-size: 1.25rem;
    font-weight: 600;
}

.price-change {
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.875rem;
}

.price-change.positive {
    background-color: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.price-change.negative {
    background-color: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
}

.coin-info {
    display: flex;
    flex-direction: column;
}

.coin-symbol {
    color: var(--dark-secondary);
    font-size: 0.875rem;
}

.coin-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--dark-border);
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat .label {
    font-size: 0.75rem;
    color: var(--dark-secondary);
}

.stat .value {
    font-size: 0.875rem;
}

.error-message,
.no-results {
    text-align: center;
    padding: 2rem;
    color: var(--dark-secondary);
}

.error-message i,
.no-results i {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.error-message button {
    margin-top: 1rem;
    padding: 0.5rem 1.5rem;
    background: var(--primary-color);
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
}

.search-container {
    position: relative;
}

.search-container i {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--dark-secondary);
}

.market-overview {
    background: var(--dark-bg);
    border-bottom: 1px solid var(--dark-border);
    padding: 1rem 2rem;
}

.market-stats {
    display: flex;
    justify-content: space-around;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat-item .label {
    font-size: 0.875rem;
    color: var(--dark-secondary);
}

.stat-item .value {
    font-size: 1.125rem;
    font-weight: 600;
}

.section-header {
    display: flex;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto 1.5rem;
    padding: 0 2rem;
}

.search-container {
    width: 100%;
    max-width: 600px;
    position: relative;
}

.search-container input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--dark-border);
    background: var(--dark-input-bg);
    color: var(--dark-text);
    font-size: 0.95rem;
}

.search-button {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.75rem;
    background: transparent;
    border: none;
    color: var(--dark-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.search-button:hover {
    color: var(--primary-color);
}

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

.left-controls,
.right-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 0;
}

.search-container {
    width: 100%;
    max-width: 400px;
    position: relative;
    margin: 0 1rem;
}

.search-container input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--dark-border);
    background: var(--dark-input-bg);
    color: var(--dark-text);
    font-size: 0.95rem;
}

.search-button {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.75rem;
    background: transparent;
    border: none;
    color: var(--dark-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.search-button:hover {
    color: var(--primary-color);
}

.view-options {
    display: flex;
    gap: 0.5rem;
}

.view-options button {
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--dark-border);
    background: transparent;
    color: var(--dark-text);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.9rem;
}

.view-options button:hover {
    background: var(--dark-hover-bg);
}

.view-options button.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.sort-controls,
.limit-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sort-controls label,
.limit-controls label {
    color: var(--dark-secondary);
    font-size: 0.9rem;
}

.sort-controls select,
.limit-controls select {
    padding: 0.5rem 2rem 0.5rem 0.75rem;
    border: 1px solid var(--dark-border);
    border-radius: 6px;
    background: var(--dark-input-bg);
    color: var(--dark-text);
    font-size: 0.9rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
}

.sort-controls select:hover,
.limit-controls select:hover {
    border-color: var(--primary-color);
}

@media (max-width: 1024px) {
    .filter-controls {
        flex-wrap: wrap;
        gap: 1rem;
        padding: 0 1rem;
    }

    .search-container {
        order: -1;
        max-width: 100%;
        margin: 0;
    }

    .left-controls,
    .right-controls {
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .left-controls,
    .right-controls {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    .right-controls {
        flex-direction: row;
        justify-content: center;
        gap: 1rem;
    }

    .sort-controls,
    .limit-controls {
        flex: 1;
        max-width: 200px;
    }
}

@media (max-width: 480px) {
    .right-controls {
        flex-direction: column;
    }

    .sort-controls,
    .limit-controls {
        max-width: none;
        width: 100%;
    }
}

footer {
    background: var(--dark-bg);
    padding: 4rem 2.5rem 2rem;
    margin-top: 4rem;
    border-top: 1px solid var(--dark-border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    padding-bottom: 2rem;
}

.footer-logo h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.footer-logo p {
    color: var(--dark-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-links a {
    color: var(--dark-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.social-links a:hover {
    color: var(--primary-color);
}

.separator {
    color: var(--dark-border);
    font-size: 0.8rem;
}

.footer-links h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--dark-text);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--dark-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

.footer-links a i {
    font-size: 1.2rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--dark-border);
    color: var(--dark-secondary);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--dark-secondary);
}

.footer-bottom a:hover {
    color: var(--primary-color);
}

.copyright {
    color: var(--dark-secondary);
    font-size: 0.8rem;
}

body.light-theme {
    background-color: var(--light-bg);
    color: var(--light-text);
}

body.light-theme .navbar {
    background-color: var(--light-bg);
    border-bottom: 1px solid var(--light-border);
}

body.light-theme .logo a {
    color: var(--light-text);
}

body.light-theme .search-container input {
    background: var(--light-input-bg);
    border-color: var(--light-border);
    color: var(--light-text);
}

body.light-theme .search-container input::placeholder {
    color: var(--light-secondary);
}

body.light-theme .search-button {
    color: var(--light-secondary);
}

body.light-theme .search-button:hover {
    color: var(--light-text);
}

body.light-theme .theme-toggle button {
    color: var(--light-text);
}

body.light-theme .theme-toggle button:hover {
    background: var(--light-hover-bg);
}

body.light-theme .market-overview {
    background: var(--light-card-bg);
    border-bottom: 1px solid var(--light-border);
}

body.light-theme .stat-item .label {
    color: var(--light-secondary);
}

body.light-theme .coin-card {
    background: var(--light-card-bg);
    border: 1px solid var(--light-border);
}

body.light-theme .coin-card:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

body.light-theme .coin-symbol {
    color: var(--light-secondary);
}

body.light-theme .coin-stats {
    border-top: 1px solid var(--light-border);
}

body.light-theme .stat .label {
    color: var(--light-secondary);
}

body.light-theme .view-options button {
    border: 1px solid var(--light-border);
    color: var(--light-text);
}

body.light-theme .view-options button:hover:not(.active) {
    background: var(--light-hover-bg);
}

body.light-theme .footer-content {
    background: var(--light-bg);
}

body.light-theme .footer-logo p {
    color: var(--light-secondary);
}

body.light-theme .quick-links a,
body.light-theme .resources a {
    color: var(--light-secondary);
}

body.light-theme .quick-links a:hover,
body.light-theme .resources a:hover {
    color: var(--primary-color);
}

body.light-theme .social-links a {
    color: var(--light-secondary);
}

body.light-theme .footer-bottom {
    border-top: 1px solid var(--light-border);
    color: var(--light-secondary);
}

body.light-theme .footer-bottom a {
    color: var(--light-secondary);
}

body.light-theme .footer-bottom a:hover {
    color: var(--primary-color);
}

body.light-theme .error-message,
body.light-theme .no-results {
    color: var(--light-secondary);
}

@keyframes priceUpLight {
    0% { color: var(--success-color); }
    100% { color: var(--light-text); }
}

@keyframes priceDownLight {
    0% { color: var(--danger-color); }
    100% { color: var(--light-text); }
}

body.light-theme .price-up {
    animation: priceUpLight 1s;
}

body.light-theme .price-down {
    animation: priceDownLight 1s;
}

body.light-theme .navbar {
    background-color: rgba(255, 255, 255, 0.95);
}

body.light-theme .footer-newsletter input {
    background: var(--light-input-bg);
    border-color: var(--light-border);
    color: var(--light-text);
}

@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 0 1rem;
    }
    
    .footer-logo {
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .footer-links {
        text-align: center;
    }
    
    .footer-links ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    
    .footer-links li {
        margin-bottom: 0;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 1rem;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .social-links {
        align-items: center;
    }
    
    .separator {
        display: none;
    }
}

.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 0;
    text-align: center;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--dark-border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 0;
    text-align: center;
}

.error-state i {
    font-size: 3rem;
    color: var(--danger-color);
    margin-bottom: 1rem;
}

.error-state h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.error-state p {
    color: var(--dark-secondary);
    margin-bottom: 1.5rem;
}

.retry-button {
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: background-color 0.2s;
}

.retry-button:hover {
    background: #1976d2;
}

.hidden {
    display: none;
}

body.light-theme .loading-spinner {
    border-color: var(--light-border);
    border-top-color: var(--primary-color);
}

body.light-theme .error-state p {
    color: var(--light-secondary);
}

.coin-placeholder {
    width: 32px;
    height: 32px;
    background: var(--dark-input-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--dark-secondary);
}

body.light-theme .coin-placeholder {
    background: var(--light-input-bg);
    color: var(--light-secondary);
}

.websocket-error {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--danger-color);
    border-radius: 6px;
    padding: 0.75rem;
    margin-top: 1rem;
}

.websocket-error .error-content {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--danger-color);
    font-size: 0.875rem;
}

.websocket-error i {
    font-size: 1rem;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--dark-border);
    border-radius: 5px;
    transition: background 0.2s;
}

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

body.light-theme::-webkit-scrollbar-track {
    background: var(--light-card-bg);
}

body.light-theme::-webkit-scrollbar-thumb {
    background: var(--light-border);
}

body.light-theme::-webkit-scrollbar-thumb:hover {
    background: var(--light-secondary);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--dark-border) var(--dark-card-bg);
}

body.light-theme * {
    scrollbar-color: var(--light-border) var(--light-card-bg);
}

.open-new-tab {
    background: transparent;
    border: none;
    color: var(--dark-secondary);
    padding: 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: all 0.2s;
    margin-left: auto;
}

.open-new-tab:hover {
    color: var(--primary-color);
    background: var(--dark-hover-bg);
}

body.light-theme .open-new-tab {
    color: var(--light-secondary);
}

body.light-theme .open-new-tab:hover {
    color: var(--primary-color);
    background: var(--light-hover-bg);
}

.scroll-top-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    z-index: 100;
    transition: all 0.2s;
}

.scroll-top-button:hover {
    background: #1976d2;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.controls-panel {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.sort-controls,
.limit-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-controls label,
.limit-controls label {
    color: var(--dark-secondary);
    font-size: 0.9rem;
}

.sort-controls select,
.limit-controls select {
    padding: 0.5rem;
    border: 1px solid var(--dark-border);
    border-radius: 4px;
    background: var(--dark-input-bg);
    color: var(--dark-text);
    font-size: 0.9rem;
    cursor: pointer;
}

body.light-theme .sort-controls label,
body.light-theme .limit-controls label {
    color: var(--light-secondary);
}

body.light-theme .sort-controls select,
body.light-theme .limit-controls select {
    background: var(--light-input-bg);
    border-color: var(--light-border);
    color: var(--light-text);
}

.offline-warning {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #ff4444;
    color: white;
    padding: 10px;
    text-align: center;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.lazy-image {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazy-image[src] {
    opacity: 1;
}