:root {
    --bg-color: #121212; --panel-bg: #1e1e1e; --text-color: #ffffff;
    --accent: #4CAF50; --accent-hover: #45a049; --border: #333;
}
body { margin: 0; font-family: 'Segoe UI', Tahoma, sans-serif; background-color: var(--bg-color); color: var(--text-color); display: flex; flex-direction: column; height: 100vh; }
.navbar { background-color: var(--panel-bg); padding: 10px 20px; display: flex; gap: 15px; border-bottom: 1px solid var(--border); }
.tab-btn { background: none; border: none; color: var(--text-color); font-size: 16px; cursor: pointer; padding: 5px 10px; border-radius: 5px; }
.tab-btn.active { background-color: var(--accent); }
.container { display: flex; flex: 1; overflow: hidden; justify-content: center; } 
.left-panel, .right-panel { width: 260px; background-color: var(--panel-bg); padding: 20px; border-right: 1px solid var(--border); overflow-y: auto; }
.right-panel { border-right: none; border-left: 1px solid var(--border); }
.center-panel { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }

#date-display { font-size: 1.5rem; color: #ccc; margin-bottom: 5px; }
#timezone-display { font-size: 0.9rem; color: #888; margin-bottom: 5px; }
#clock { font-size: 4rem; font-weight: bold; margin-bottom: 10px; letter-spacing: 2px; }
#income-display { font-size: 1.5rem; color: var(--accent); margin-bottom: 20px; }

.upgrade-btn { background-color: #333; border: 1px solid #555; color: white; padding: 10px; width: 100%; text-align: left; margin-bottom: 10px; cursor: pointer; border-radius: 5px; transition: 0.2s; }
.upgrade-btn:hover:not(:disabled) { background-color: #444; border-color: var(--accent); }
.upgrade-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.section-title-container { display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--border); padding-bottom: 10px; margin-bottom: 15px; }
.section-title { margin: 0; }

input { width: 100%; padding: 8px; margin-bottom: 10px; box-sizing: border-box; background: #333; border: 1px solid #555; color: white; border-radius: 4px; }
button.action-btn { width: 100%; padding: 10px; background-color: var(--accent); color: white; border: none; border-radius: 4px; cursor: pointer; margin-bottom: 5px; }
button.action-btn:hover { background-color: var(--accent-hover); }

.stats-box { margin-top: 20px; background: #2a2a2a; padding: 15px; border-radius: 8px; }
.stat-item { margin-bottom: 8px; font-size: 1.1rem; }
.hidden { display: none !important; }
.user-id-text { font-size: 0.8rem; color: #888; word-break: break-all; margin-bottom: 15px; }
#save-status { font-size: 0.85rem; color: #aaa; text-align: right; margin-top: 10px; }

/* 彈窗樣式 */
.full-screen-modal { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background-color: var(--bg-color); display: flex; align-items: center; justify-content: center; z-index: 100; }
.auth-box { background-color: var(--panel-bg); padding: 40px; border-radius: 12px; border: 1px solid var(--border); width: 100%; max-width: 380px; box-shadow: 0 10px 30px rgba(0,0,0,0.8); box-sizing: border-box; }
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal-content { background: var(--panel-bg); padding: 30px; border-radius: 10px; text-align: center; border: 1px solid var(--accent); width: 300px; }