/* CSS 变量定义 */
:root {
    --bg-color: #0a0a0e;
    --card-bg-color: #1a1a22;
    --border-color: #2a2a35;
    --primary-text-color: #e0e0e0;
    --secondary-text-color: #a0a0b0;
    --accent-color: #00f5d4; /* 亮青色 */
    --positive-color: #00ff9b;
    --negative-color: #ff4d6d;
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'Roboto Mono', monospace;
}

body {
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    font-family: var(--font-primary);
    margin: 0;
    line-height: 1.6;
}

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

header {
    padding: 40px 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    color: var(--accent-color);
    letter-spacing: 2px;
}

header .subtitle {
    font-size: 1.1rem;
    color: var(--secondary-text-color);
    margin-top: 10px;
}

main {
    padding: 40px 20px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: auto auto;
    gap: 20px;
}

.card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
}

.main-stats {
    grid-column: 1 / -1; 
    grid-row: 1 / 2;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    align-items: center;
}

.stat-item {
    text-align: center;
}

.stat-item label {
    font-size: 0.9rem;
    color: var(--secondary-text-color);
    display: block;
    margin-bottom: 8px;
}

.stat-item .value {
    font-size: 1.6rem;
    font-weight: 600;
    font-family: var(--font-mono);
}
.stat-item .token-name {
    color: var(--accent-color);
}

.value.positive { color: var(--positive-color); }
.value.negative { color: var(--negative-color); }

.status {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.status-light {
    width: 12px;
    height: 12px;
    background-color: var(--positive-color);
    border-radius: 50%;
    margin-right: 10px;
    animation: pulse 1.5s infinite;
    box-shadow: 0 0 10px var(--positive-color);
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.4; }
    100% { opacity: 1; }
}

.chart-card {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
    height: 350px;
}

.interaction-card {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
}

.terminal-card {
    grid-column: 1 / 3;
    grid-row: 3 / 4;
}

.card h3 {
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
    color: var(--primary-text-color);
    flex-shrink: 0;
}

.terminal {
    flex-grow: 1;
    background-color: #000;
    border-radius: 6px;
    padding: 15px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    overflow-y: scroll;
    height: 180px;
}
.terminal::-webkit-scrollbar { width: 5px; }
.terminal::-webkit-scrollbar-track { background: var(--border-color); }
.terminal::-webkit-scrollbar-thumb { background: var(--accent-color); }

.terminal p { margin: 0 0 5px; line-height: 1.5; }
.terminal .log-time { color: #888; margin-right: 10px; }
.terminal .log-info { color: #eee; }
.terminal .log-success { color: var(--positive-color); }
.terminal .log-warn { color: #f9a825; }

.interaction-card { justify-content: space-between; }
.chat-window { flex-grow: 1; overflow-y: auto; padding-right: 10px; margin-bottom: 15px; display: flex; flex-direction: column; gap: 12px; }
.chat-window::-webkit-scrollbar { width: 5px; }
.chat-window::-webkit-scrollbar-track { background: transparent; }
.chat-window::-webkit-scrollbar-thumb { background: var(--border-color); }
.chat-message { padding: 10px 15px; border-radius: 18px; max-width: 80%; line-height: 1.5; font-size: 0.9rem; }
.user-message { background-color: var(--accent-color); color: var(--bg-color); align-self: flex-end; border-bottom-right-radius: 4px; }
.ai-message { background-color: #2c2c3a; color: var(--primary-text-color); align-self: flex-start; border-bottom-left-radius: 4px; }
.typing-indicator { align-self: flex-start; color: var(--secondary-text-color); font-style: italic; }
.chat-input-area { display: flex; border-top: 1px solid var(--border-color); padding-top: 15px; margin-top: 5px; flex-shrink: 0; }
#chat-input { flex-grow: 1; background: transparent; border: 1px solid var(--border-color); border-radius: 8px 0 0 8px; padding: 10px; color: var(--primary-text-color); outline: none; }
#chat-input:focus { border-color: var(--accent-color); }
#chat-form button { background-color: var(--accent-color); color: var(--bg-color); border: none; padding: 0 20px; font-size: 1.2rem; cursor: pointer; border-radius: 0 8px 8px 0; transition: background-color 0.2s; }
#chat-form button:hover { background-color: #00c4ab; }
.cta-section { text-align: center; padding: 60px 20px; margin-top: 40px; background-color: var(--card-bg-color); border-radius: 12px; }
.cta-section h2 { font-size: 2rem; margin-bottom: 15px; }
.cta-button { background-color: var(--accent-color); color: var(--bg-color); border: none; padding: 15px 30px; border-radius: 8px; font-size: 1rem; font-weight: 700; cursor: pointer; transition: transform 0.2s ease, box-shadow 0.2s ease; text-decoration: none; }
.cta-button:hover { transform: translateY(-3px); box-shadow: 0 6px 15px rgba(0, 245, 212, 0.3); }
footer { text-align: center; padding: 30px 0; margin-top: 40px; border-top: 1px solid var(--border-color); color: var(--secondary-text-color); font-size: 0.9rem; }

@media (max-width: 992px) {
    .dashboard-grid { grid-template-columns: 1fr; }
    .card { grid-column: auto !important; grid-row: auto !important; }
    .chart-card { height: 300px; }
}