:root {
    --bg-color: #0d1117;
    --text-color: #e6edf3;
    --panel-bg: #161b22;
    --border-color: #30363d;
    --term-bg: #05080c;
    --term-text: #00ff66;
    --btn-bg: #21262d;
    --btn-text: #c9d1d9;
    --btn-hover-bg: #30363d;
    --btn-hover-border: #8b949e;
}

body.light-mode {
    --bg-color: #f6f8fa;
    --text-color: #1f2328;
    --panel-bg: #ffffff;
    --border-color: #d0d7de;
    --term-bg: #0d1117;
    --term-text: #e6edf3;
    --btn-bg: #f3f4f6;
    --btn-text: #24292f;
    --btn-hover-bg: #e5e7eb;
    --btn-hover-border: #1f2328;
}

body {
    font-family: 'Consolas', 'Courier New', monospace;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 1.5rem;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.tui-window {
    background-color: var(--panel-bg);
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.tui-header {
    background-color: var(--border-color);
    color: var(--text-color);
    padding: 8px 14px;
    font-weight: bold;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
}

.tui-body {
    padding: 16px;
    background-color: var(--term-bg);
    min-height: 440px;
    overflow-x: auto;
    color: #e6edf3;
    font-family: 'Consolas', 'Courier New', monospace;
    white-space: pre;
    line-height: 1.35;
    font-size: 13.5px;
    user-select: none;
}

.tui-btn {
    background-color: var(--btn-bg);
    border: 1px solid var(--border-color);
    color: var(--btn-text);
    padding: 6px 14px;
    font-family: 'Consolas', monospace;
    font-size: 0.85rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 0px;
    transition: all 0.1s ease-in-out;
}

.tui-btn:hover {
    background-color: var(--btn-hover-bg);
    border-color: var(--btn-hover-border);
}

.tui-btn-primary {
    background-color: #238636;
    border-color: #2ea043;
    color: #ffffff;
}

.tui-btn-primary:hover {
    background-color: #2ea043;
}

.tui-btn-danger {
    background-color: #da3633;
    border-color: #f85149;
    color: #ffffff;
}

.tui-btn-danger:hover {
    background-color: #f85149;
}

.c-red { color: #f87171; font-weight: bold; }
.c-blue { color: #38bdf8; font-weight: bold; }
.c-green { color: #4ade80; font-weight: bold; }
.c-yellow { color: #facc15; font-weight: bold; }
.c-wild { color: #c084fc; font-weight: bold; }
.c-gray { color: #9ca3af; }
.c-darkgray { color: #6b7280; }
.c-cyan { color: #22d3ee; }
.c-white { color: #ffffff; }

.tui-menu-link {
    color: #22d3ee;
    text-decoration: underline;
    cursor: pointer;
}
.tui-menu-link:hover {
    color: #facc15;
}