:root {
    --bg: #0d1117;
    --surface: #161b22;
    --border: #30363d;

    --text: #e6edf3;
    --muted: #8b949e;

    --primary: #2383e2;
    --danger: #f85149;
}

/* Base */
* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    height: 100dvh;
    display: flex;
    flex-direction: column;
}

/* Top */
.top-bar {
    height: 52px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--border);
}

.left {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo {
    height: 24px;
}

.title {
    font-weight: 500;
}

.right {
    color: var(--muted);
    font-size: 0.85rem;
}

/* Layout */
.app {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 160px;
    border-right: 1px solid var(--border);
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Buttons */
button {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 10px;
    border-radius: 6px;
    cursor: pointer;

    display: flex;
    align-items: center;
    gap: 8px;

    font-size: 13px;
}

button:hover {
    background: rgba(255,255,255,0.05);
}

button.primary {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

button.primary:hover {
    background: #1f6fbf;
}

button.danger {
    color: var(--danger);
    border-color: transparent;
}

/* Icons */
button svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

/* Main */
.main {
    flex: 1;
    padding: 16px;
}

#log-area {
    height: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 14px;

    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;

    overflow-y: auto;
    white-space: pre-wrap;
}

/* Log */
#log-area div {
    padding: 2px 4px;
}

.ERROR { color: #ff7b72; }
.WARNING { color: #d29922; }
.INFO { color: #79c0ff; }
.SYSTEM { color: #a371f7; }

/* Mobile */
.mobile-bar {
    display: none;
}

.mobile-menu {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {

    .sidebar {
        display: none;
    }

    .main {
        padding: 8px;
        padding-bottom: 70px;
    }

    .mobile-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        width: 100%;
        border-top: 1px solid var(--border);
        background: var(--surface);
    }

    .mobile-bar button {
        flex: 1;
        justify-content: center;
        border: none;
        border-right: 1px solid var(--border);
    }

    .mobile-bar button:last-child {
        border-right: none;
    }

    .mobile-menu {
        position: fixed;
        bottom: 60px;
        left: 0;
        width: 100%;
        background: var(--surface);
        border-top: 1px solid var(--border);
        display: none;
        flex-direction: column;
    }

    .mobile-menu.open {
        display: flex;
    }

    .mobile-menu button {
        padding: 14px;
        border: none;
        border-bottom: 1px solid var(--border);
        justify-content: center;
    }
}