:root {
    --primary: #00ffd5;
    --secondary: #7b2ff7;
    --accent: #ff3864;
    --background: #000000;
    --surface: rgba(255, 255, 255, 0.05);
    --text: #ffffff;
    --positive: #00ff9d;
    --negative: #ff3864;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Space Grotesk', sans-serif;
}

body {
    background: var(--background);
    color: var(--text);
    min-height: 100vh;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 5rem;
}

.header {
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.title-container {
    margin-bottom: 3rem;
    position: relative;
    padding: 2rem 0;
}

.title {
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    z-index: 2;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: titleGlow 8s linear infinite;
}

.title span {
    display: block;
    font-size: 1.2rem;
    font-weight: 500;
    letter-spacing: 6px;
    margin-top: 1.5rem;
    opacity: 1;
    text-transform: uppercase;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 20px rgba(0, 255, 213, 0.3);
}

.title-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 50%, rgba(0, 255, 213, 0.1), transparent 30%),
        radial-gradient(circle at 70% 50%, rgba(123, 47, 247, 0.1), transparent 30%);
    filter: blur(40px);
    z-index: 1;
    opacity: 0.6;
}

.title-decoration {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.description-wrapper {
    max-width: 800px;
    margin: 0 auto 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.info-button {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0.8rem 1.5rem;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.info-button i {
    color: var(--primary);
    font-size: 1.2rem;
}

.info-button:hover {
    border-color: var(--primary);
    background: rgba(0, 255, 213, 0.05);
    transform: translateY(-2px);
}

.description-container {
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    transition: all 0.3s ease;
    width: 100%;
    padding: 0 2rem;
}

.description-container.active {
    max-height: 200px;
    opacity: 1;
    padding: 1.5rem 2rem;
}

.description-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(0, 255, 213, 0.05), rgba(123, 47, 247, 0.05));
    opacity: 0.5;
}

.description {
    font-size: 1.1rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
    text-align: center;
    position: relative;
    z-index: 1;
}

@keyframes titleGlow {
    0%, 100% {
        filter: brightness(1);
    }
    50% {
        filter: brightness(1.2);
    }
}

.search-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.search-bar {
    flex: 1;
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    color: var(--text);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-bar:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(0, 255, 213, 0.1);
}

.sort-button {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0 1.5rem;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.sort-button:hover {
    border-color: var(--primary);
    background: rgba(0, 255, 213, 0.05);
}

.sort-button i {
    color: var(--primary);
}

.favorite-toggle {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0 1.5rem;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.favorite-toggle:hover {
    border-color: var(--primary);
    background: rgba(0, 255, 213, 0.05);
}

.favorite-toggle i {
    color: var(--primary);
}

.favorite-btn {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    margin-left: auto;
}

.favorite-btn:hover {
    color: var(--primary);
    transform: scale(1.1);
}

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

.favorite-btn.active i {
    text-shadow: 0 0 10px var(--primary);
}

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

.funding-card {
    background: var(--surface);
    border-radius: 12px;
    padding: 1.8rem;
    position: relative;
    border: 1px solid transparent;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    
    /* Performance optimizations */
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    perspective: 1000px;
    
    /* Transition settings */
    transition-property: transform, border-color, box-shadow;
    transition-duration: 300ms;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* GPU acceleration */
    will-change: transform;
}

.funding-card:hover {
    transform: translate3d(0, -5px, 0);
    border-color: var(--primary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.funding-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(0, 255, 213, 0.05), rgba(123, 47, 247, 0.05));
    border-radius: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

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

.coin-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.coin-icon {
    width: 40px;
    height: 40px;
    background: var(--surface);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.coin-icon img.coin-logo-small {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 6px;
}

.coin-name {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.3rem;
}

.market-cap {
    font-size: 0.9rem;
    opacity: 0.7;
}

.rate-info {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.rate {
    font-size: 2.2rem;
    font-weight: 700;
    padding: 0.5rem 0;
    transition: color 300ms ease;
}

.rate.positive {
    background: linear-gradient(45deg, var(--positive), var(--primary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.rate.negative {
    background: linear-gradient(45deg, var(--negative), var(--accent));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header styles */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.back-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.back-button:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.language-buttons {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.lang-btn.active {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.1);
}

.flag-icon {
    width: 20px;
    height: 15px;
    object-fit: cover;
}

/* Price ticker styles */
.price-ticker {
    display: flex;
    gap: 1.2rem;
    margin: 0 1rem;
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.4rem 0.9rem;
    background: var(--surface);
    border-radius: 8px;
    font-size: 1rem;
    transition: background 0.3s ease;
    cursor: pointer;
    min-width: 200px;
}

.ticker-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.ticker-item img {
    width: 20px;
    height: 20px;
}

.ticker-symbol {
    font-weight: 600;
    color: var(--text);
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

.ticker-price {
    font-weight: 600;
    font-size: 1.1rem;
    min-width: 100px;
    text-align: right;
}

.ticker-separator {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 0.3rem;
}

.ticker-change {
    font-size: 0.9rem;
    padding: 0.2rem 0.5rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.ticker-change.positive {
    background: rgba(0, 255, 0, 0.1);
    color: #00ff00;
}

.ticker-change.negative {
    background: rgba(255, 0, 0, 0.1);
    color: #ff0000;
}

/* Countdown styles */
.countdown-container {
    position: relative;
    background: var(--surface);
    border-radius: 15px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: visible;
}

.countdown-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(0, 255, 213, 0.05), rgba(123, 47, 247, 0.05));
    opacity: 0.5;
    border-radius: 15px;
    pointer-events: none;
}

.countdown-label {
    font-size: 1rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
    position: relative;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 2rem;
    position: relative;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    min-width: 3ch;
}

.countdown-unit {
    font-size: 0.9rem;
    opacity: 0.7;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

.countdown-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 1s linear;
}

/* Tooltip styles */
.countdown-container[data-tooltip] {
    cursor: help;
}

.countdown-container[data-tooltip]::before,
.countdown-container[data-tooltip]::after {
    --tooltip-arrow-size: 6px;
    position: absolute;
    left: 50%;
    opacity: 0;
    transform: translate(-50%, -10px);
    transition: all 0.15s ease-in-out;
    pointer-events: none;
    z-index: 10;
}

.countdown-container[data-tooltip]::before {
    content: attr(data-tooltip);
    top: -10px;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    width: max-content;
    max-width: 300px;
    text-align: center;
    line-height: 1.4;
    transform-origin: bottom;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.countdown-container[data-tooltip]::after {
    content: '';
    top: -10px;
    border: var(--tooltip-arrow-size) solid transparent;
    border-top-color: rgba(0, 0, 0, 0.9);
    transform-origin: top;
}

.countdown-container[data-tooltip]:hover::before,
.countdown-container[data-tooltip]:hover::after {
    opacity: 1;
    transform: translate(-50%, calc(-100% - var(--tooltip-arrow-size)));
}

.tooltip-icon {
    font-size: 1rem;
    color: var(--primary);
    margin-left: 0.5rem;
    opacity: 0.7;
    transition: opacity 0.2s ease;
    vertical-align: middle;
}

.countdown-container:hover .tooltip-icon {
    opacity: 1;
}

/* Mobile responsiveness for tooltip */
@media (max-width: 768px) {
    .countdown-container[data-tooltip]::before {
        width: calc(100% - 40px);
        max-width: none;
        font-size: 0.85rem;
        left: 20px;
        transform: translate(0, -10px);
    }

    .countdown-container[data-tooltip]:hover::before {
        transform: translate(0, calc(-100% - var(--tooltip-arrow-size)));
    }

    .countdown-container[data-tooltip]::after {
        display: none;
    }
}

/* Pagination styles */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    padding: 1rem;
}

.pagination-btn {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pagination-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

.pagination-btn.active {
    background: var(--primary);
    color: var(--background);
    border-color: var(--primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

    .search-container {
        flex-direction: column;
    }

    .sort-button, .favorite-toggle {
        padding: 1rem 1.5rem;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-left, .nav-right {
        width: 100%;
        justify-content: center;
    }

    .price-ticker {
        order: -1;
        margin: 0.5rem 0;
        width: 100%;
        justify-content: center;
    }

    .ticker-item {
        font-size: 1rem;
        padding: 0.4rem 0.8rem;
    }

    .ticker-symbol,
    .ticker-price {
        font-size: 1.1rem;
    }

    .ticker-change {
        font-size: 0.9rem;
    }

    .ticker-item img {
        width: 20px;
        height: 20px;
    }

    .countdown-timer {
        gap: 1rem;
    }

    .countdown-value {
        font-size: 2rem;
    }

    .funding-card {
        transition: transform 0.2s ease, border-color 0.2s ease;
    }
    
    .funding-card:hover {
        transform: translateY(-3px);
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 2.5rem;
    }

    .funding-grid {
        grid-template-columns: 1fr;
    }

    .countdown-timer {
        flex-wrap: wrap;
    }

    .countdown-item {
        flex: 1 1 100%;
        margin-bottom: 1rem;
    }
}

.coin-details {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.binance-link {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-decoration: none;
    color: var(--primary);
    font-size: 0.9rem;
    padding: 0.2rem 0.4rem;
    border-radius: 6px;
    background: rgba(0, 255, 213, 0.1);
    transition: all 0.3s ease;
    border: 1px solid transparent;
    width: 80px;
    justify-content: center;
    overflow: hidden;
    white-space: nowrap;
}

.binance-link:hover {
    background: rgba(0, 255, 213, 0.2);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.binance-logo {
    width: 16px;
    height: 16px;
    object-fit: contain;
}

.countdown-wrapper {
    position: relative;
    background: var(--surface);
    border-radius: 6px;
    padding: 0.5rem;
    margin: 0.5rem 0;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.coin-countdown {
    font-family: monospace;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 1px;
}

.coin-countdown-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 1s linear;
}

/* Mobil görünüm için optimizasyon */
@media (max-width: 480px) {
    .binance-link {
        width: 70px;
        font-size: 0.8rem;
        padding: 0.15rem 0.3rem;
    }
    
    .binance-logo {
        width: 14px;
        height: 14px;
    }
}