* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', sans-serif; background: #1e1e1e; color: #cccccc; font-size: 13px; }

/* ─── 그리드 레이아웃 ─── */
.app {
    display: grid;
    grid-template-columns: 200px 1fr;
    grid-template-rows: 36px 1fr 180px 24px;
    height: 100vh;
}

/* ─── 탑바 ─── */
.topbar {
    grid-column: 1 / -1;
    background: #323233;
    display: flex; align-items: center;
    padding: 0 12px;
    border-bottom: 1px solid #3c3c3c;
    gap: 12px;
}
.app-title { font-size: 12px; font-weight: 700; color: #569cd6; letter-spacing: 0.5px; }
.exchange-select { display: flex; align-items: center; gap: 6px; }
.exchange-select select {
    background: #3c3c3c; border: 1px solid #555; color: #cccccc;
    padding: 2px 8px; border-radius: 3px; font-size: 11px; font-family: inherit; cursor: pointer;
}
.exchange-select select:focus { outline: 1px solid #569cd6; }
.spacer { flex: 1; }
.status-group { display: flex; gap: 10px; align-items: center; font-size: 11px; color: #858585; }
.sep { color: #3c3c3c; }
.dot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; margin-right: 3px; }
.dot.connected { background: #6a9955; }
.dot.disconnected { background: #f44747; }
.dot.loading { background: #dcdcaa; animation: pulse 1s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ─── 좌측 패널 (공용 상시) ─── */
.panel-left {
    grid-column: 1;
    grid-row: 2 / 4;
    background: #252526;
    border-right: 1px solid #3c3c3c;
    display: flex; flex-direction: column;
    overflow-y: auto;
}
.pl-section { padding: 10px 12px; border-bottom: 1px solid #3c3c3c; }
.pl-label { font-size: 10px; color: #858585; text-transform: uppercase; font-weight: 500; margin-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.pl-empty { color: #585858; font-size: 11px; padding: 4px 0; }

/* 티커 */
.pl-pair { font-size: 11px; color: #858585; margin-bottom: 4px; font-weight: 500; }
.pl-price-row { display: flex; align-items: baseline; gap: 8px; }
.pl-price { font-size: 20px; font-weight: 700; color: #cccccc; font-family: 'Cascadia Code', 'Consolas', monospace; }
.pl-change { font-size: 11px; }
.pl-change.up { color: #6a9955; }
.pl-change.down { color: #f44747; }

/* 잔고 */
.pl-balance { font-size: 11px; line-height: 1.8; font-family: 'Cascadia Code', 'Consolas', monospace; }
.pl-balance .row { display: flex; justify-content: space-between; }
.pl-balance .coin { color: #858585; }

/* 오더북 */
.pl-orderbook-section { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.ob-controls { display: flex; gap: 3px; margin-left: auto; }
.ob-btn {
    background: transparent; border: 1px solid #3c3c3c; color: #585858;
    padding: 0 4px; border-radius: 2px; font-size: 9px; cursor: pointer;
    font-family: inherit; line-height: 16px;
}
.ob-btn.active { color: #cccccc; border-color: #569cd6; background: #2d3c4a; }
.ob-btn:hover { color: #cccccc; }
.ob-decimal-select {
    background: #2d2d2d; border: 1px solid #3c3c3c; color: #858585;
    font-size: 9px; padding: 0 2px; border-radius: 2px; cursor: pointer;
    font-family: inherit;
}
.ob-decimal-select:focus { outline: 1px solid #569cd6; }
.pl-orderbook { flex: 1; overflow-y: auto; font-family: 'Cascadia Code', 'Consolas', monospace; font-size: 10px; }
.pl-orderbook table { width: 100%; border-collapse: collapse; }
.pl-orderbook td { padding: 1px 3px; border: none; position: relative; z-index: 1; }
.pl-orderbook tr { position: relative; }
.pl-orderbook tr .ob-depth {
    position: absolute; top: 0; bottom: 0; right: 0;
    z-index: 0; opacity: 0.15; transition: width 0.3s ease;
}
.pl-orderbook .ask { color: #f44747; }
.pl-orderbook .ask .ob-depth { background: #f44747; }
.pl-orderbook .bid { color: #6a9955; }
.pl-orderbook .bid .ob-depth { background: #6a9955; }
.pl-orderbook .ob-price { text-align: right; width: 55%; }
.pl-orderbook .ob-size { text-align: right; color: #858585; }
.pl-orderbook .ob-spread { text-align: center; color: #569cd6; padding: 3px 0; font-size: 9px; }

/* 미체결 */
.pl-orders-section { max-height: 140px; display: flex; flex-direction: column; }
.pl-orders { overflow-y: auto; font-size: 10px; }
.pl-orders .order-row { display: flex; justify-content: space-between; align-items: center; padding: 3px 0; border-bottom: 1px solid #2d2d2d; }
.pl-orders .order-side { font-weight: 600; width: 24px; }
.pl-orders .order-side.buy { color: #6a9955; }
.pl-orders .order-side.sell { color: #f44747; }
.pl-orders .order-info { flex: 1; color: #aaa; font-family: 'Cascadia Code', 'Consolas', monospace; }
.pl-orders .order-cancel { cursor: pointer; color: #585858; font-size: 10px; padding: 0 4px; }
.pl-orders .order-cancel:hover { color: #f44747; }

/* 전체취소 */
.btn-kill {
    width: 100%; padding: 8px; background: transparent; color: #f44747;
    border: 1px solid #f44747; border-radius: 3px; cursor: pointer;
    font-size: 11px; font-weight: 600; font-family: inherit;
}
.btn-kill:hover { background: #4a2d2d; }

/* ─── 우측 패널 (탭 + 콘텐츠) ─── */
.panel-right {
    grid-column: 2;
    grid-row: 2;
    display: flex; flex-direction: column;
    overflow: hidden;
}

/* 탭 바 */
.tab-bar {
    display: flex; background: #2d2d2d;
    border-bottom: 1px solid #3c3c3c;
    padding: 0; height: 32px; align-items: stretch;
}
.tab {
    padding: 0 16px; display: flex; align-items: center;
    font-size: 12px; color: #858585; cursor: pointer;
    border-right: 1px solid #3c3c3c;
    background: #2d2d2d;
}
.tab:hover { color: #cccccc; }
.tab.active {
    color: #ffffff; background: #1e1e1e;
    border-bottom: 2px solid #569cd6;
    margin-bottom: -1px;
}

/* 탭 콘텐츠 */
.tab-content { flex: 1; overflow-y: auto; padding: 16px 20px; }

/* ─── 콘솔 ─── */
.console-panel {
    grid-column: 1 / -1;
    grid-row: 3;
    background: #1e1e1e;
    border-top: 1px solid #3c3c3c;
    display: flex; flex-direction: column;
    overflow: hidden;
}
.console-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 4px 12px; background: #252526; border-bottom: 1px solid #3c3c3c;
    font-size: 10px; color: #858585; font-weight: 500; text-transform: uppercase;
}
.console-filters { display: flex; gap: 4px; }
.filter-btn {
    background: transparent; border: 1px solid #3c3c3c; color: #585858;
    padding: 1px 6px; border-radius: 3px; font-size: 10px; cursor: pointer; font-family: inherit;
}
.filter-btn.active { color: #cccccc; border-color: #569cd6; background: #2d3c4a; }
.filter-btn:hover { color: #cccccc; }
.log-area {
    flex: 1; padding: 6px 12px; overflow-y: auto;
    font-family: 'Cascadia Code', 'Consolas', monospace; font-size: 11px; color: #858585;
}
.log-area .log-line { padding: 1px 0; }
.log-area .time { color: #585858; }
.log-area .success { color: #6a9955; }
.log-area .info { color: #569cd6; }
.log-area .warn { color: #ce9178; }
.log-area .error { color: #f44747; }

/* ─── 하단바 ─── */
.bottombar {
    grid-column: 1 / -1;
    grid-row: 4;
    background: #007acc;
    display: flex; align-items: center;
    padding: 0 12px; font-size: 11px; color: #fff; gap: 12px;
}
.bottombar .sep { color: rgba(255,255,255,0.3); }
.bottombar .right { margin-left: auto; }

/* ─── 공용 컴포넌트 ─── */
.badge { display: inline-block; padding: 1px 5px; border-radius: 3px; font-size: 10px; }
.badge-green { background: #2d4a2d; color: #6a9955; }
.badge-red { background: #4a2d2d; color: #f44747; }
.badge-blue { background: #2d3c4a; color: #569cd6; }
.badge-yellow { background: #4a4a2d; color: #dcdcaa; }

.card { background: #252526; border: 1px solid #3c3c3c; border-radius: 4px; padding: 16px; margin-bottom: 16px; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.card-header h3 { font-size: 13px; color: #569cd6; font-weight: 500; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat { padding: 12px; background: #2d2d2d; border-radius: 4px; }
.stat .label { font-size: 10px; color: #858585; text-transform: uppercase; }
.stat .value { font-size: 18px; font-weight: 600; margin-top: 2px; }
.stat .value.green { color: #6a9955; }
.stat .value.blue { color: #569cd6; }

table { width: 100%; border-collapse: collapse; font-size: 12px; }
th, td { padding: 6px 10px; text-align: left; border-bottom: 1px solid #3c3c3c; }
th { font-size: 10px; color: #858585; font-weight: 500; text-transform: uppercase; }

.empty-state { text-align: center; padding: 30px; color: #585858; font-size: 12px; }

/* 스크롤바 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #424242; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }