:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.3);
    --card-border: rgba(255, 255, 255, 0.1);
    --font-jp: 'Noto Sans JP', sans-serif;
    --font-cn: 'Noto Sans SC', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-cn);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.background-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.15) 0%, transparent 40%),
                radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 40%);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    padding: 40px 0;
    border-bottom: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 23, 42, 0.8);
}

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

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 5px;
}

.highlight {
    color: var(--accent);
}

.logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.status {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: var(--card-bg);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--card-border);
}

.live-indicator {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 10px #22c55e;
    animation: pulse 2s infinite;
}

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

/* Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    padding: 40px 0;
}

/* Card */
.news-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    backdrop-filter: blur(5px);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    border-color: var(--accent);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: #1e293b;
}

.card-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.source-tag {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
}

.card-title-cn {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
    line-height: 1.4;
}

.card-title-jp {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-family: var(--font-jp);
    margin-bottom: 20px;
    border-left: 2px solid var(--card-border);
    padding-left: 10px;
}

.read-more {
    margin-top: auto;
    display: inline-block;
    text-decoration: none;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}

.read-more:hover {
    color: #fff;
}

/* Loading */
.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 50px;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--accent);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto 20px;
}

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

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-secondary);
    font-size: 0.8rem;
    border-top: 1px solid var(--card-border);
    margin-top: auto;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}