/* ==========================================================================
   OptiCut Pro - Design System & Modern Dark Theme
   ========================================================================== */

:root {
    --bg-base: #090d16;
    --bg-surface: #111827;
    --bg-card: #1f2937;
    --bg-card-hover: #374151;
    --border-color: #374151;
    --border-focus: #3b82f6;

    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-glow: rgba(59, 130, 246, 0.25);

    --accent-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;

    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --header-height: 60px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.6);
}

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

body.dark-theme {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-main);
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* ==========================================================================
   Header Principal
   ========================================================================== */
.app-header {
    height: var(--header-height);
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 38px;
    height: 38px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 0 15px var(--primary-glow);
}

.logo-title h1 {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-title h1 span {
    color: var(--primary-color);
    font-size: 0.75rem;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.4);
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 4px;
    vertical-align: middle;
}

.logo-title p {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==========================================================================
   Layout Principal Dual Panel
   ========================================================================== */
.app-layout {
    display: flex;
    flex: 1;
    height: calc(100vh - var(--header-height));
    overflow: hidden;
}

.sidebar-panel {
    width: 440px;
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    overflow-y: auto;
}

.sidebar-panel::-webkit-scrollbar {
    width: 6px;
}
.sidebar-panel::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.canvas-viewport-panel {
    flex: 1;
    background-color: #0b0f19;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* ==========================================================================
   Tarjetas & Secciones
   ========================================================================== */
.card-panel {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
}

.flex-card {
    flex: 1;
    min-height: 250px;
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.card-header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.card-header-bar .card-title {
    margin-bottom: 0;
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.form-group label {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.4rem 0.6rem;
    font-size: 0.85rem;
    font-family: var(--font-mono);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

/* ==========================================================================
   Tabla Editable de Piezas
   ========================================================================== */
.table-actions-inline {
    display: flex;
    gap: 0.25rem;
}

.table-wrapper {
    flex: 1;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-surface);
    max-height: 280px;
}

.pieces-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.pieces-table th {
    background-color: #111827;
    color: var(--text-secondary);
    font-weight: 600;
    text-align: center;
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.pieces-table td {
    padding: 0.3rem 0.4rem;
    border-bottom: 1px solid #1f2937;
    text-align: center;
}

.pieces-table tr:hover {
    background-color: rgba(59, 130, 246, 0.08);
}

.pieces-table tr.selected {
    background-color: rgba(59, 130, 246, 0.18);
}

.cell-input {
    width: 100%;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-primary);
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    padding: 0.25rem;
    border-radius: 4px;
}

.cell-input:hover {
    border-color: var(--border-color);
}

.cell-input:focus {
    border-color: var(--border-focus);
    background-color: var(--bg-card);
    outline: none;
}

.btn-delete-row {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 2px 6px;
    border-radius: 4px;
}

.btn-delete-row:hover {
    color: var(--danger-color);
    background-color: rgba(239, 68, 68, 0.15);
}

/* ==========================================================================
   Modo Avanzado Toggle & Botones
   ========================================================================== */
.advanced-option-box {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: rgba(17, 24, 39, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 38px;
    height: 20px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #4b5563;
    transition: .3s;
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(18px);
}

.toggle-label strong {
    display: block;
    font-size: 0.78rem;
}

.toggle-label small {
    color: var(--text-muted);
    font-size: 0.68rem;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-family: var(--font-main);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.45rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 2px 8px var(--primary-glow);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-card-hover);
    border-color: var(--text-secondary);
}

.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-danger {
    background-color: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--danger-color);
}

.btn-danger:hover {
    background-color: var(--danger-color);
    color: #fff;
}

.btn-xs {
    padding: 0.2rem 0.4rem;
    font-size: 0.72rem;
}

.btn-lg {
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.btn-block {
    width: 100%;
}

/* Dropdown */
.dropdown-export {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: 105%;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    min-width: 160px;
    box-shadow: var(--shadow-md);
    z-index: 200;
}

.dropdown-content a {
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    text-decoration: none;
    display: block;
    font-size: 0.8rem;
}

.dropdown-content a:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.dropdown-export:hover .dropdown-content {
    display: block;
}

/* ==========================================================================
   Estadísticas
   ========================================================================== */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.stat-box {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.6rem;
    display: flex;
    flex-direction: column;
}

.stat-box.accent {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(16, 185, 129, 0.15));
    border-color: rgba(59, 130, 246, 0.4);
}

.stat-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.stat-value {
    font-size: 0.95rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.stat-box.accent .stat-value {
    font-size: 1.3rem;
    color: var(--accent-color);
}

/* ==========================================================================
   Canvas Toolbar & Viewport
   ========================================================================== */
.canvas-toolbar {
    height: 48px;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    gap: 0.75rem;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
}

.toolbar-divider {
    width: 1px;
    height: 20px;
    background-color: var(--border-color);
}

.select-input {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    outline: none;
}

.btn-icon {
    width: 32px;
    height: 32px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.btn-icon:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-icon.active {
    background-color: rgba(59, 130, 246, 0.2);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.canvas-container {
    flex: 1;
    position: relative;
    width: 100%;
    height: 100%;
    cursor: grab;
}

.canvas-container:active {
    cursor: grabbing;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.canvas-hud {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.3rem 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-secondary);
    pointer-events: none;
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Modals
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    width: 420px;
    box-shadow: var(--shadow-lg);
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.modal-desc {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--bg-surface);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.75rem;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: width 0.2s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    font-family: var(--font-mono);
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
}