* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

:root {
    --bg-deep-space: #0a0a0c;
    --bg-panel-dark: #121216;
    --bg-element-surface: #1c1c24;
    --bg-element-active: #2a2a38;
    --border-cad-line: #2d2d3a;
    --border-cad-highlight: #3d3d52;
    --text-primary: #f1f1f5;
    --text-secondary: #9ea4b0;
    --text-dark: #4a4f5a;
    --accent-blueprint: #00ffcc;
    --accent-danger: #ff4d4d;
    --font-monospace: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    --sidebar-width-left: 380px;
    --sidebar-width-right: 420px;
    --header-height: 64px;
    --footer-height: 32px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-deep-space);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

#layout-studio-app {
    display: grid;
    grid-template-rows: var(--header-height) 1fr var(--footer-height);
    grid-template-columns: var(--sidebar-width-left) 1fr var(--sidebar-width-right);
    grid-template-areas: "header header header" "left viewport right" "footer footer footer";
    height: 100vh;
}

/* Header */
header {
    grid-area: header;
    background: var(--bg-panel-dark);
    border-bottom: 1px solid var(--border-cad-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
}

.brand {
    display: flex;
    gap: 16px;
    align-items: center;
}

.brand-icon {
    font-size: 28px;
    color: var(--accent-blueprint);
    filter: drop-shadow(0 0 8px rgba(0,255,204,0.3));
}

.brand h1 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.75px;
    background: linear-gradient(90deg, #fff, var(--text-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand p {
    font-size: 11px;
    color: var(--text-dark);
    font-family: var(--font-monospace);
    margin-top: 2px;
}

.toolbar {
    display: flex;
    gap: 12px;
}

.cad-btn {
    background: var(--bg-element-surface);
    border: 1px solid var(--border-cad-line);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 12px;
    cursor: pointer;
    transition: 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.cad-btn:hover {
    background: var(--bg-element-active);
    border-color: var(--border-cad-highlight);
}

.cad-btn.active {
    background: rgba(0,255,204,0.08);
    border-color: var(--accent-blueprint);
    color: var(--accent-blueprint);
}

.delete-btn {
    background: #ff4d4d20;
    border-color: var(--accent-danger);
    width: 100%;
    margin-top: 12px;
}

/* Panels */
.cad-panel {
    background: var(--bg-panel-dark);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#left-panel {
    grid-area: left;
    border-right: 1px solid var(--border-cad-line);
}

#right-panel {
    grid-area: right;
    border-left: 1px solid var(--border-cad-line);
}

#viewport {
    grid-area: viewport;
    position: relative;
    background: #0d0d11;
}

#three-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Stats overlay */
.stats-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    z-index: 10;
}

.stat-badge {
    background: rgba(18,18,22,0.85);
    backdrop-filter: blur(6px);
    border: 1px solid var(--border-cad-line);
    border-radius: 8px;
    padding: 6px 14px;
    font-size: 11px;
    font-family: var(--font-monospace);
    color: var(--text-secondary);
}

.stat-badge .accent {
    color: var(--accent-blueprint);
    font-weight: bold;
}

/* Panel headers and scrolling areas */
.panel-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-cad-line);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: 12px;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    gap: 8px;
}

.scroll-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

/* Asset cards */
.asset-card {
    background: var(--bg-element-surface);
    border: 1px solid var(--border-cad-line);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
    cursor: pointer;
    transition: 0.15s;
}

.asset-card:hover {
    background: var(--bg-element-active);
    transform: translateY(-2px);
    border-color: var(--border-cad-highlight);
}

.asset-title {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
}

.asset-sub {
    font-size: 11px;
    color: var(--text-secondary);
}

/* Guest and seat items */
.guest-group {
    background: var(--bg-element-surface);
    border-radius: 12px;
    margin-bottom: 24px;
    border: 1px solid var(--border-cad-line);
    overflow: hidden;
}

.guest-group-title {
    padding: 12px 16px;
    background: rgba(0,0,0,0.3);
    font-weight: 600;
    font-size: 13px;
    border-bottom: 1px solid var(--border-cad-line);
    display: flex;
    justify-content: space-between;
}

.guest-item, .seat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-cad-line);
    transition: 0.1s;
    cursor: grab;
}

.guest-item:hover, .seat-item:hover {
    background: var(--bg-element-active);
}

.guest-name {
    font-weight: 500;
}

.guest-rsvp {
    font-size: 10px;
    background: #2a3a2a;
    padding: 2px 8px;
    border-radius: 20px;
    color: #b0ffb0;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    margin-left: 10px;
}

.btn-icon:hover {
    color: var(--accent-blueprint);
}

/* Property boxes */
.property-box {
    background: var(--bg-element-surface);
    border: 1px solid var(--border-cad-line);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
}

.property-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-cad-line);
    padding-bottom: 8px;
    margin-bottom: 12px;
}

.field {
    margin-bottom: 12px;
}

.field label {
    display: block;
    font-size: 11px;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.field input, .field select {
    width: 100%;
    background: var(--bg-deep-space);
    border: 1px solid var(--border-cad-line);
    color: white;
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 12px;
}

.range-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.range-row span {
    font-size: 12px;
    color: var(--accent-blueprint);
    min-width: 40px;
}

/* Footer */
footer {
    grid-area: footer;
    background: var(--bg-panel-dark);
    border-top: 1px solid var(--border-cad-line);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    font-size: 11px;
    color: var(--text-dark);
    font-family: var(--font-monospace);
}

/* Toast notification */
.toast {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: var(--bg-panel-dark);
    border-left: 4px solid var(--accent-blueprint);
    padding: 12px 20px;
    border-radius: 8px;
    z-index: 300;
    animation: slideIn 0.2s;
    font-size: 12px;
}

@keyframes slideIn {
    from {
        transform: translateX(60px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Modal - fixed for clickability */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-panel-dark);
    border-radius: 16px;
    width: 400px;
    border: 1px solid var(--border-cad-highlight);
    pointer-events: auto;
    cursor: default;
}

.modal-header, .modal-footer {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-cad-line);
    display: flex;
    justify-content: space-between;
}

.modal-footer {
    border-top: 1px solid var(--border-cad-line);
    border-bottom: none;
    justify-content: flex-end;
    gap: 12px;
}

/* Pulse animation */
.pulse {
    width: 6px;
    height: 6px;
    background: var(--accent-blueprint);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-blueprint);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.5;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* Drag & drop */
[draggable=true] {
    cursor: grab;
}

[draggable=true]:active {
    cursor: grabbing;
}

.empty-note {
    color: var(--text-dark);
    text-align: center;
    padding: 24px;
    font-size: 12px;
}

.cad-select {
    background: var(--bg-deep-space);
    border: 1px solid var(--border-cad-line);
    color: white;
    padding: 8px 10px;
    border-radius: 8px;
    width: 100%;
}