/* ===== 全局重置与基础样式 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0d1117;
    --bg-panel: #161b22;
    --bg-card: #1c2128;
    --bg-hover: #21262d;
    --border-color: #30363d;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-blue: #58a6ff;
    --accent-green: #3fb950;
    --accent-yellow: #d29922;
    --accent-red: #f85149;
    --accent-purple: #bc8cff;
    --accent-orange: #ffa657;
    --accent-cyan: #39d353;
    --rarity-common: #8b949e;
    --rarity-uncommon: #3fb950;
    --rarity-rare: #58a6ff;
    --rarity-epic: #bc8cff;
    --rarity-legendary: #ffa657;
    --shadow: 0 4px 16px rgba(0,0,0,0.4);
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
    font-size: 14px;
}

/* ===== 游戏容器 ===== */
#game-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
}

/* ===== 顶部状态栏 ===== */
#top-bar {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 100;
}

.game-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-orange);
    white-space: nowrap;
    text-shadow: 0 0 20px rgba(255,166,87,0.5);
}

/* (resources-bar removed — resources shown in homeland inventory) */

.resource {
    display: none; /* legacy; no longer used in top bar */
}

.resource:hover {
    border-color: var(--accent-blue);
    background: var(--bg-hover);
}

.resource span {
    color: var(--accent-yellow);
    font-weight: 600;
    min-width: 30px;
}

#top-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    transform: translateY(-1px);
}

/* ===== 主内容区 ===== */
#main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ===== 侧边导航 ===== */
#side-nav {
    width: 110px;
    background: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 8px 6px;
    gap: 4px;
    flex-shrink: 0;
}

.nav-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 10px 6px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 12px;
    text-align: center;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    line-height: 1.3;
}

.nav-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.nav-btn.active {
    background: linear-gradient(135deg, rgba(88,166,255,0.15), rgba(188,140,255,0.15));
    color: var(--accent-blue);
    border-color: var(--accent-blue);
    font-weight: 600;
}

/* ===== 内容区域 ===== */
#content-area {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.tab-panel {
    display: none;
    height: 100%;
    overflow-y: auto;
    padding: 16px;
    flex-direction: column;
    gap: 16px;
}

.tab-panel.active {
    display: flex;
}

/* 自定义滚动条 */
.tab-panel::-webkit-scrollbar {
    width: 6px;
}
.tab-panel::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
.tab-panel::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
.tab-panel::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== 面板头部 ===== */
.panel-header {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.panel-desc {
    color: var(--text-secondary);
    font-size: 13px;
    flex: 1;
}

.panel-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}

.info-text {
    color: var(--text-secondary);
    font-size: 13px;
}

.info-text span {
    color: var(--accent-yellow);
    font-weight: 600;
}