:root {
    --bg-color: #0d1117;
    --panel-bg: #161b22;
    --border-color: #30363d;
    --text-main: #c9d1d9;
    --text-muted: #8b949e;
    
    --primary: #58a6ff;
    --primary-hover: #1f6feb;
    --success: #2ea043;
    --success-hover: #238636;
    --warning: #d29922;
    --warning-hover: #9e6a03;
    --info: #bc8cff;
    --info-hover: #8957e5;
    --error: #f85149;
    
    --term-bg: #010409;
    --term-text: #e6edf3;
    
    --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, SF Mono, Menlo, Consolas, Liberation Mono, monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Header */
.header {
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-main);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--error);
}

.status-dot.connected {
    background-color: var(--success);
    box-shadow: 0 0 8px rgba(46, 160, 67, 0.4);
}

/* Main Layout */
.main-content {
    flex: 1;
    display: flex;
    gap: 1.5rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: 1.5rem 2rem;
    overflow: hidden;
    min-height: 0;
}

/* Controls Panel */
.controls-panel {
    flex: 0 0 350px;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.controls-panel h2 {
    font-size: 1rem;
    color: var(--text-main);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.875rem;
    font-weight: 500;
}

.select-wrapper {
    position: relative;
}

select {
    width: 100%;
    appearance: none;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.6rem 1rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.875rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

select:focus {
    outline: none;
    border-color: var(--primary);
}

.select-wrapper::after {
    content: "▼";
    font-size: 0.7rem;
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* Checkbox Custom */
.checkbox-group {
    gap: 0.1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input {
    display: none;
}

.checkbox-custom {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.checkbox-label input:checked + .checkbox-custom {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkbox-label input:checked + .checkbox-custom::after {
    content: "✓";
    color: white;
    font-size: 12px;
}

.hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 1.5rem;
}

/* Action Buttons */
.actions-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: auto;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    background-color: #161b22;
    border: 1px solid var(--border-color);
    padding: 1rem 1.25rem;
    border-radius: 6px;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
}

.action-btn.sm {
    padding: 0.75rem 1rem;
    gap: 0.75rem;
}

.action-btn:hover {
    background-color: #1f272f;
    border-color: var(--primary);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(1);
}

.btn-icon {
    font-size: 2rem;
}

.btn-text {
    display: flex;
    flex-direction: column;
}

.btn-text strong {
    color: var(--text-main);
    font-size: 1rem;
    font-weight: 600;
}

.btn-text span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.action-btn.primary { 
    background-color: #161b22 !important;
    border-color: var(--border-color) !important;
    color: var(--text-main) !important;
}
.action-btn.primary svg {
    stroke: var(--text-main) !important;
    color: var(--text-main) !important;
}
.action-btn.primary strong {
    color: var(--text-main) !important;
}
.action-btn.primary:hover {
    background-color: #1f272f !important;
    border-color: var(--primary) !important;
    box-shadow: none;
}
.action-btn.warning:hover { border-color: var(--warning); }
.action-btn.info:hover { border-color: var(--info); }
.action-btn.success:hover { border-color: var(--success); }

/* Terminal Panel */
.terminal-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--term-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.terminal-header {
    background-color: var(--panel-bg);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.window-controls {
    display: flex;
    gap: 8px;
}

.window-controls span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.close { background-color: #ff5f56; }
.minimize { background-color: #ffbd2e; }
.maximize { background-color: #27c93f; }

.terminal-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    border-radius: 4px;
}

.icon-btn:hover {
    background-color: rgba(255,255,255,0.1);
    color: var(--text-main);
}

.terminal-body {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--term-text);
    scroll-behavior: smooth;
    line-height: 1.4;
}

.log-line {
    margin-bottom: 0.25rem;
    word-break: break-all;
    white-space: pre-wrap;
}

.log-line.system {
    color: var(--primary);
    font-weight: 600;
}

.log-line.error {
    color: var(--error);
}

.log-line.success {
    color: var(--success);
}

.log-line.warning {
    color: var(--warning);
}

/* Animations loading state */
.action-btn.loading .btn-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* Tabs */
.tabs-nav {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--panel-bg);
}

.tabs-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 2rem;
    padding: 0 2rem;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-family: inherit;
    font-weight: 500;
    padding: 1rem 0;
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s;
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    color: var(--primary);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

.tab-pane {
    display: none;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.tab-pane.active {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Database Explorer */
.db-sidebar {
    flex: 0 0 280px;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.db-sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.db-sidebar-header h2 {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    padding: 0;
    margin: 0;
}

.table-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
}

.table-list li {
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    cursor: pointer;
    font-family: var(--font-mono);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.table-list li:hover {
    background-color: rgba(88, 166, 255, 0.08);
    color: var(--text-main);
}

.table-list li.active {
    background-color: rgba(88, 166, 255, 0.15);
    color: var(--primary);
    font-weight: 600;
}

.table-list-placeholder {
    cursor: default !important;
    font-family: inherit !important;
    color: var(--text-muted) !important;
    font-style: italic;
}

/* Viewer Panel */
.viewer-panel {
    flex: 1;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.viewer-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.viewer-title-text {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.viewer-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box svg {
    position: absolute;
    left: 0.6rem;
    color: var(--text-muted);
}

.search-box input {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.4rem 0.75rem 0.4rem 2rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.8rem;
    width: 220px;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
}

.limit-box {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.limit-box select {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.35rem 0.5rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: inherit;
}

.table-container {
    flex: 1;
    overflow: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th {
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-weight: 600;
    text-align: left;
    padding: 0.75rem 1rem;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.data-table th:hover {
    background-color: #1e242c;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
}

.data-table tbody tr:hover td {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.data-table th.sorted-asc .sort-icon::after { content: " ↑"; }
.data-table th.sorted-desc .sort-icon::after { content: " ↓"; }

.loading-cell {
    padding: 3rem !important;
    color: var(--text-muted) !important;
}

.text-center { text-align: center; }

.badge-stock {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(46, 160, 67, 0.15);
    color: var(--success);
    border: 1px solid rgba(46, 160, 67, 0.4);
}

.badge-stock.zero {
    background: rgba(248, 81, 73, 0.15);
    color: var(--error);
    border-color: rgba(248, 81, 73, 0.4);
}

.table-footer {
    padding: 0.5rem 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
    background-color: var(--bg-color);
}

/* Long text truncation */
.td-truncated {
    max-width: 280px;
}

.txt-preview {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: inline-block;
    max-width: 220px;
    vertical-align: middle;
}

.btn-expand-text {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.1rem 0.4rem;
    cursor: pointer;
    font-size: 0.75rem;
    vertical-align: middle;
    margin-left: 0.25rem;
    color: var(--text-muted);
    transition: all 0.15s;
}

.btn-expand-text:hover {
    border-color: var(--primary);
    color: var(--primary);
    background-color: rgba(88,166,255,0.08);
}

/* Full text popup overlay */
#text-popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
}

#text-popup {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    max-width: 700px;
    width: 90%;
    max-height: 70vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px rgba(0,0,0,0.6);
    overflow: hidden;
}

.text-popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color);
}

.text-popup-col {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
}

.text-popup-header button {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    transition: all 0.15s;
}

.text-popup-header button:hover {
    background-color: rgba(255,255,255,0.08);
    color: var(--text-main);
}

.text-popup-body {
    padding: 1rem;
    overflow-y: auto;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-main);
    white-space: pre-wrap;
    word-break: break-all;
}




/* ===================== Historial Tab ===================== */
.history-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    min-width: 0;
}
.history-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.history-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
    border: none;
    padding: 0;
    margin: 0;
}
.history-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.history-date-group {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.history-date-group select {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-family: inherit;
}
.history-count-label { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }
.search-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}
.search-btn:hover {
    background-color: rgba(88,166,255,0.1);
    border-color: var(--primary);
    color: var(--primary);
}
.search-btn.primary:hover {
    background-color: rgba(88,166,255,0.15);
    border-color: var(--primary);
    color: var(--primary);
}
.search-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.change-badge { display: inline-block; padding: 0.15rem 0.5rem; border-radius: 12px; font-size: 0.72rem; font-weight: 500; margin: 0.1rem 0.15rem; white-space: nowrap; }
.change-badge.price  { background: rgba(88,166,255,0.12); color: var(--primary); border: 1px solid rgba(88,166,255,0.3); }
.change-badge.promo  { background: rgba(188,140,255,0.12); color: var(--info); border: 1px solid rgba(188,140,255,0.3); }
.change-badge.stock  { background: rgba(46,160,67,0.12); color: var(--success); border: 1px solid rgba(46,160,67,0.3); }
.change-badge.name   { background: rgba(210,153,34,0.12); color: var(--warning); border: 1px solid rgba(210,153,34,0.3); }
.change-badge.other  { background: rgba(200,200,200,0.08); color: var(--text-muted); border: 1px solid var(--border-color); }
.sku-cell  { font-family: var(--font-mono); font-size: 0.8rem; color: var(--primary); font-weight: 600; }
.time-cell { font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); }