:root {
    /* Colors */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --secondary: #f3f4f6;
    --secondary-hover: #e5e7eb;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    
    --bg-color: #f8fafc;
    --panel-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;

    /* Typography */
    --font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* Shadows & Border Radius */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-full: 9999px;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    overflow: hidden; /* Prevent body scroll, handle inside containers */
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background-color: var(--panel-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
}

.sidebar-header p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.sidebar-content {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.section-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-title h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
}

.building-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.building-item {
    background-color: var(--secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.building-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.building-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
}

.building-info p {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.building-actions {
    display: flex;
    gap: 0.25rem;
}

.divider {
    border: 0;
    height: 1px;
    background-color: var(--border);
    margin: 1.5rem 0;
}

.data-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-image: radial-gradient(#e2e8f0 1px, transparent 1px);
    background-size: 20px 20px;
    overflow: hidden;
}

.main-header {
    height: 64px;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    z-index: 5;
}

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

.header-title h1 {
    font-size: 1.25rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--panel-bg);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.header-actions span {
    font-weight: 500;
    font-size: 0.875rem;
    min-width: 40px;
    text-align: center;
}

.canvas-container {
    flex: 1;
    overflow: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    cursor: grab;
}

.canvas-grid {
    position: relative;
    width: 100%;
    height: 100%;
    transform-origin: center center;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    text-align: center;
}

.empty-state ion-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #cbd5e1;
}

.empty-state p {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Map Elements */
.map-building {
    position: absolute;
    background-color: var(--panel-bg);
    border: 3px solid #64748b;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.map-building-header {
    background-color: #f1f5f9;
    padding: 0.75rem 1.5rem;
    border-bottom: 3px solid #64748b;
    text-align: center;
    cursor: move;
    user-select: none;
}

.map-building-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: #334155;
}

.map-floors {
    display: flex;
    flex-direction: column; /* Top floor at the top, 1st floor at the bottom */
}

.map-floor {
    display: flex;
    border-bottom: 3px solid #64748b;
}

.map-floor:last-child {
    border-bottom: none;
}

.floor-label {
    width: 60px;
    background-color: #f8fafc;
    border-right: 2px solid #94a3b8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #475569;
    font-size: 0.95rem;
}

.floor-content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.floor-rooms {
    display: flex;
    height: 100px;
    z-index: 1;
}

.corridor {
    height: 40px;
    background-color: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.5rem;
    border-top: 2px dashed #94a3b8;
    border-bottom: 2px dashed #94a3b8;
}

.map-room {
    width: 120px;
    height: 100px;
    flex-shrink: 0;
    border-right: 2px solid #94a3b8;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.03);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: #ffffff;
    position: relative;
    padding: 0.5rem;
}

.map-room.blank {
    background-color: transparent !important;
    box-shadow: none !important;
}

.map-room.blank:has(+ .map-room.blank) {
    border-right-color: transparent !important;
}

.map-room.blank .room-usage,
.map-room.blank .room-code {
    display: none;
}

.map-room.blank:hover {
    background-color: rgba(0,0,0,0.02) !important;
}

.map-room.merged-down {
    height: 244px !important;
    z-index: 10;
    border-bottom: 2px solid #94a3b8;
}

.map-room.merged-up {
    height: 244px !important;
    transform: translateY(-144px);
    z-index: 10;
    border-top: 2px solid #94a3b8;
}

.map-room.placeholder {
    visibility: hidden !important;
    pointer-events: none;
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
}

.map-room:last-child {
    border-right: none;
}

.map-room:hover {
    background-color: #f1f5f9;
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.room-usage {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    text-align: center;
    word-break: break-all;
    overflow-wrap: break-word;
    line-height: 1.25;
    padding: 0 4px;
    max-height: 55px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.map-room.narrow .room-usage {
    display: -webkit-box;
    font-size: 0.85rem;
    letter-spacing: -0.5px;
    max-height: 65px;
    padding: 0 2px;
    line-height: 1.15;
    word-break: break-all;
    -webkit-line-clamp: 3;
}

.room-code {
    font-size: 0.75rem;
    color: var(--text-muted);
    position: absolute;
    bottom: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
}

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

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

.btn-secondary {
    background-color: var(--secondary);
    color: var(--text-main);
    border: 1px solid var(--border);
}

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

.btn-danger {
    background-color: #fee2e2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

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

.btn-icon {
    padding: 0.5rem;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.25rem;
}

.btn-icon:hover {
    background-color: var(--secondary);
    color: var(--text-main);
}

.w-100 {
    width: 100%;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: var(--panel-bg);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Radio buttons */
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    font-weight: 400;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    display: none;
}

.radio-custom {
    width: 18px;
    height: 18px;
    border: 1px solid var(--border);
    border-radius: 50%;
    margin-right: 0.5rem;
    position: relative;
    background-color: white;
}

.radio-label input[type="radio"]:checked + .radio-custom {
    border-color: var(--primary);
}

.radio-label input[type="radio"]:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background-color: var(--primary);
    border-radius: 50%;
}

/* Room Edit Specific */
.room-code-display {
    background-color: #f8fafc;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px dashed #cbd5e1;
}

.room-code-display .label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.room-code-display strong {
    font-size: 1rem;
    color: var(--text-main);
}

.color-picker {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.color-option {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.color-option:hover {
    transform: scale(1.1);
}

.color-option.selected {
    border: 2px solid var(--primary);
    transform: scale(1.1);
}

.room-size-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.room-size-actions.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.room-size-actions .btn {
    flex: 1;
    font-size: 0.8rem;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.color-option.selected {
    box-shadow: 0 0 0 2px white, 0 0 0 4px var(--primary);
}

/* Selection Box */
.selection-box {
    position: absolute;
    border: 2px solid rgba(59, 130, 246, 0.8);
    background-color: rgba(59, 130, 246, 0.2);
    pointer-events: none;
    z-index: 1000;
}

/* Selected Room */
.map-room.selected {
    box-shadow: inset 0 0 0 4px rgba(59, 130, 246, 0.8) !important;
}

/* Batch Action Bar */
.batch-action-bar {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: #1e293b;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    animation: slideUp 0.3s ease;
}

.batch-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.batch-info ion-icon {
    font-size: 1.5rem;
    color: #60a5fa;
}

.batch-actions {
    display: flex;
    gap: 0.5rem;
}

@keyframes slideUp {
    from { transform: translate(-50%, 100%); opacity: 0; }
    to { transform: translate(-50%, 0); opacity: 1; }
}

/* Modal Redesign Additions */
.modal-section {
    padding-bottom: 1.25rem;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.modal-section:last-child {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: none;
}

.modal-section.info-section {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.section-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

/* Toggle Switch */
.switch-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    background-color: #f8fafc;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}

.switch-label:hover {
    background-color: #f1f5f9;
}

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

.switch-text .main-text {
    font-weight: 600;
    color: var(--text-main);
    font-size: 0.95rem;
}

.switch-text .sub-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.15rem;
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #cbd5e1;
    transition: .3s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

.toggle-switch input:checked + .slider {
    background-color: #ef4444;
}

.toggle-switch input:checked + .slider:before {
    transform: translateX(20px);
}

/* Grids */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; }

.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }

/* Buttons */
.btn-sm {
    padding: 0.4rem 0.5rem;
    font-size: 0.8rem;
    height: auto;
}

.btn-danger-outline {
    background-color: white;
    color: #ef4444;
    border: 1px solid #fca5a5;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
}

.btn-danger-outline:hover {
    background-color: #fef2f2;
    border-color: #ef4444;
}

.text-danger {
    color: #ef4444 !important;
}

/* Print Styles */
@media print {
    body {
        overflow: visible !important;
        background-color: white;
    }
    .app-container {
        display: block;
        height: auto;
    }
    .sidebar {
        display: none !important;
    }
    .main-header, .batch-action-bar {
        display: none !important;
    }
    .canvas-container {
        padding: 0;
        display: block;
        position: static;
        height: auto;
        overflow: visible;
        cursor: default;
    }
    .map-building {
        page-break-inside: avoid;
        box-shadow: none;
        border: 2px solid #64748b;
    }
    .map-building-header .print-building-btn {
        display: none !important;
    }
    
    /* Make text larger during print for better legibility when scaled down */
    .room-usage {
        font-size: 1.4rem !important;
    }
    .map-room.narrow .room-usage {
        font-size: 1.1rem !important;
    }
    .room-code {
        font-size: 0.9rem !important;
    }
    
    /* Print single building mode */
    body.print-single-mode .canvas-grid {
        display: flex;
        justify-content: center;
        align-items: flex-start;
        position: static;
        transform: none !important;
    }
    body.print-single-mode .map-building:not(.printing) {
        display: none !important;
    }
    body.print-single-mode .map-building.printing {
        position: relative !important;
        display: block !important;
        margin: 0 auto;
        left: auto !important;
        top: auto !important;
        transform: none !important;
    }
}