/* Early 2000s Windows-era Thin CSS */
body {
    font-family: Tahoma, "Trebuchet MS", Arial, sans-serif;
    background-color: #d4d0c8; /* Classic Windows 98/2000 Gray */
    color: #000;
    margin: 0;
    padding: 15px;
}

.header {
    background-color: #000080;
    color: #ffffff;
    padding: 12px;
    border: 2px outset #ffffff;
    margin-bottom: 10px;
}

.header h1 {
    margin: 0;
    font-size: 24px;
}

.header p {
    margin: 5px 0 0 0;
    font-size: 12px;
}

.nav-bar {
    background-color: #c0c0c0;
    padding: 8px;
    border: 2px outset #ffffff;
    margin-bottom: 15px;
    font-size: 13px;
}

.nav-bar a {
    color: #000000;
    text-decoration: none;
    padding: 0 5px;
}

.nav-bar a:hover {
    text-decoration: underline;
    color: #000080;
}

.main-container {
    display: table;
    width: 100%;
    border-spacing: 10px 0;
}

.panel {
    display: table-cell;
    background-color: #ffffff;
    border: 2px inset #ffffff;
    padding: 10px;
    vertical-align: top;
}

.sidebar {
    width: 250px;
    background-color: #ece9d8;
}

.board-area {
    width: 500px;
    text-align: center;
    background-color: #d4d0c8;
}

.panel-title {
    background-color: #808080;
    color: #ffffff;
    padding: 4px;
    margin-top: 0;
    font-size: 14px;
}

.retro-hr {
    border: 0;
    border-top: 1px solid #808080;
    border-bottom: 1px solid #ffffff;
    margin: 15px 0;
}

select, input[type="text"], button {
    font-family: Tahoma, sans-serif;
    font-size: 12px;
    border: 2px outset #ffffff;
    background: #d4d0c8;
    padding: 4px;
    margin: 2px 0;
}

input[type="text"] {
    background: #ffffff;
    border: 2px inset #ffffff;
    width: 130px;
}

button:active {
    border: 2px inset #ffffff;
}

.status-box {
    border: 2px inset #ffffff;
    background: #ffffff;
    padding: 5px;
    margin-bottom: 5px;
    font-family: monospace;
    font-size: 13px;
}

.history-box {
    border: 2px inset #ffffff;
    background: #ffffff;
    height: 350px;
    overflow-y: auto;
    font-family: Courier, monospace;
    font-size: 12px;
    padding: 5px;
    line-height: 1.4;
}

/* 0-Bug Rigid Board Layout */
#board {
    display: grid;
    grid-template-columns: repeat(8, 60px);
    grid-template-rows: repeat(8, 60px);
    border: 4px outset #808080;
    margin: 0 auto;
    width: 480px;
    height: 480px;
}

.square {
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.light { background-color: #eeddbb; }
.dark { background-color: #996633; }
.selected { outline: 3px solid #ff0000; outline-offset: -3px; }

.piece {
    width: 50px;
    height: 50px;
    cursor: pointer;
    user-select: none;
    -webkit-user-drag: none; /* Prevents ghost dragging bugs */
}

.footer {
    margin-top: 15px;
    text-align: center;
    font-size: 11px;
    color: #333;
}

.content-page {
    background: #ffffff;
    border: 2px inset #ffffff;
    padding: 20px;
    line-height: 1.6;
}