:root {
    --bg-color: #f8f9fb;
    --text-color: #1e2329;
    --header-bg: #ffffff;
    --card-bg: #ffffff;
    --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    --border-color: #eaecef;
    --accent-color: #007bff;
    --sub-text-color: #707a8a;
    --hover-bg: #f5f5f5;
    --up-color: #03a66d;
    --down-color: #cf304a;
    --ticker-bg: #1e2329;
}

body.dark-mode {
    --bg-color: #0b0e11;
    --text-color: #eaecef;
    --header-bg: #181a20;
    --card-bg: #1e2329;
    --card-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    --border-color: #2b3139;
    --accent-color: #f0b90b;
    --sub-text-color: #848e9c;
    --hover-bg: #2b3139;
    --ticker-bg: #000000;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

/* News Ticker */
#news-ticker {
    background: var(--ticker-bg);
    color: #f0b90b;
    padding: 8px 0;
    overflow: hidden;
    white-space: nowrap;
    font-size: 0.85rem;
    font-weight: 600;
}

.ticker-content {
    display: inline-block;
    padding-left: 100%;
    animation: ticker 30s linear infinite;
}

@keyframes ticker {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-100%, 0, 0); }
}

header {
    background-color: var(--header-bg);
    padding: 15px 40px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
}

h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--accent-color);
    font-weight: 800;
}

.header-controls {
    display: flex;
    gap: 10px;
}

#market-overview {
    padding: 30px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.sentiment-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    min-width: 200px;
    text-align: center;
}

#fear-greed-index {
    font-size: 2.5rem;
    font-weight: 900;
}

.search-container {
    flex: 1;
    max-width: 600px;
}

#crypto-search {
    width: 100%;
    padding: 15px 25px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
    box-shadow: var(--card-shadow);
}

/* Category Filter */
#category-filter {
    padding: 0 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.filter-tabs {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 5px;
}

.filter-btn {
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    font-weight: 600;
    transition: 0.2s;
    white-space: nowrap;
}

.filter-btn.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

main {
    padding: 0 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.table-header {
    display: flex;
    padding: 10px 20px;
    color: var(--sub-text-color);
    font-size: 0.85rem;
    font-weight: bold;
    border-bottom: 1px solid var(--border-color);
}

.h-rank { width: 40px; }
.h-name { width: 160px; }
.h-desc { flex: 1; margin: 0 20px; }
.h-trend { width: 140px; text-align: center; }
.h-price { width: 160px; text-align: right; }

.crypto-row {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    transition: 0.2s;
}

.crypto-row:hover { background: var(--hover-bg); }

.crypto-rank { width: 40px; color: var(--sub-text-color); font-weight: bold; }
.crypto-info { width: 160px; display: flex; flex-direction: column; }
.crypto-name { font-weight: bold; font-size: 1.05rem; }
.crypto-symbol { color: var(--sub-text-color); font-size: 0.8rem; }

.crypto-desc {
    flex: 1;
    margin: 0 20px;
    font-size: 0.85rem;
    color: var(--sub-text-color);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.crypto-trend {
    width: 140px;
    text-align: center;
}

.crypto-trend img {
    width: 100px;
    height: 30px;
    filter: brightness(0.9);
}

.crypto-price-container {
    width: 160px;
    text-align: right;
}

.crypto-price { font-weight: bold; margin: 0; font-size: 1.05rem; }
.crypto-change { font-size: 0.8rem; font-weight: bold; }
.up { color: var(--up-color); }
.down { color: var(--down-color); }

#contact-section, #comments-section {
    max-width: 800px;
    margin: 60px auto;
    padding: 40px;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
}

#submit-btn {
    width: 100%;
    padding: 15px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: bold;
    cursor: pointer;
}

footer { padding: 40px; text-align: center; color: var(--sub-text-color); }

#theme-toggle, #lang-toggle, #currency-toggle {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 8px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
}

@media (max-width: 992px) {
    .h-trend, .crypto-trend { display: none; }
}

@media (max-width: 768px) {
    #market-overview { flex-direction: column; padding: 20px; }
    .table-header, .h-desc, .crypto-desc { display: none; }
    .h-name, .crypto-info { flex: 1; }
}