:root {
    --bg-color: #f8f3e6; /* 羊皮纸浅黄色 */
    --text-color: #3e3222;
    --border-color: #c4b59d;
    --btn-bg: #8b5a2b;
    --btn-hover: #a06b38;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Georgia', 'KaiTi', 'SimSun', serif;
    margin: 0;
    padding: 10px;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #fffdf7;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
}

.banner {
    width: 100%;
    height: auto;
    display: block;
    border-bottom: 2px solid var(--border-color);
}

.screen {
    display: none;
    padding: 20px;
}

.screen.active {
    display: block;
}

h2, h3 {
    text-align: center;
    color: #5c3a21;
}

input[type="text"], input[type="password"], input[type="number"], textarea {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-sizing: border-box;
    background: #faf7f0;
    font-family: inherit;
    font-size: 16px;
}

button {
    background-color: var(--btn-bg);
    color: white;
    border: none;
    padding: 12px 20px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 16px;
    font-family: inherit;
    transition: background 0.3s;
}

button:hover {
    background-color: var(--btn-hover);
}

.btn-group {
    display: flex;
    gap: 10px;
    justify-content: space-between;
}
.btn-group button { width: 48%; }

.admin-link {
    text-align: center;
    font-size: 12px;
    color: #999;
    cursor: pointer;
    margin-top: 20px;
}

/* 游戏界面 */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 10px;
    margin-bottom: 15px;
    font-weight: bold;
}

.small-btn {
    padding: 5px 10px;
    font-size: 14px;
}

#story-board {
    height: 55vh;
    overflow-y: auto;
    border: 1px inset var(--border-color);
    padding: 15px;
    background: #fbf8f1;
    margin-bottom: 15px;
    border-radius: 4px;
}

.msg-user { color: #205c75; font-weight: bold; margin: 10px 0; text-align: right; }
.msg-ai { margin: 10px 0; }
.ascii-art {
    font-family: monospace;
    white-space: pre-wrap;
    background: #2a2a2a;
    color: #00ff00;
    padding: 10px;
    border-radius: 4px;
    font-size: 12px;
    line-height: 1.2;
    overflow-x: auto;
}

.input-area {
    display: flex;
    gap: 10px;
}
.input-area input { margin: 0; flex-grow: 1; }

.quick-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 10px;
}

/* 后台表格 */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 14px;
}
th, td {
    border: 1px solid var(--border-color);
    padding: 8px;
    text-align: left;
}
th { background-color: #eaddc4; }

/* 手机端适配调整 */
@media (max-width: 600px) {
    .quick-options { grid-template-columns: 1fr; }
    #story-board { height: 50vh; }
}