/* Builder Page */
.builder-page {
    display: flex;
    flex-direction: column;
    height: calc(100vh - var(--navbar-height));
    overflow: hidden;
}

/* Builder Toolbar */
.builder-toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.builder-toolbar__title-input {
    font-family: var(--font-pixel);
    font-size: var(--pixel-xs);
    color: var(--text-primary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-xs) var(--space-sm);
    min-width: 200px;
    transition: all var(--transition-fast);
}

.builder-toolbar__title-input:hover {
    border-color: var(--border-subtle);
}

.builder-toolbar__title-input:focus {
    background: var(--bg-input);
    border-color: var(--neon-cyan);
    outline: none;
}

.builder-toolbar__spacer {
    flex: 1;
}

/* Builder Main Layout */
.builder-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Chat Panel */
.builder-chat-panel {
    width: 400px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
}

/* API Key Section */
.builder-chat-panel__key-section {
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}

.builder-chat-panel__key-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.builder-chat-panel__key-header:hover {
    background: var(--bg-tertiary);
}

.builder-chat-panel__key-status {
    font-size: var(--text-xs);
    color: var(--neon-green);
    font-family: var(--font-pixel);
    font-size: 8px;
}

.builder-chat-panel__key-body {
    padding: 0 var(--space-md) var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.builder-chat-panel__key-section.collapsed .builder-chat-panel__key-body {
    display: none;
}

/* Game Config Summary */
.builder-game-config-summary {
    display: flex;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
    flex-wrap: wrap;
}

.builder-config-badge {
    font-family: var(--font-pixel);
    font-size: 8px;
    padding: 3px 8px;
    background: rgba(0, 245, 255, 0.1);
    border: 1px solid rgba(0, 245, 255, 0.3);
    border-radius: 3px;
    color: var(--neon-cyan);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.builder-config-badge--health {
    background: rgba(255, 49, 49, 0.1);
    border-color: rgba(255, 49, 49, 0.3);
    color: #FF6B6B;
}

/* Chat Messages */
.builder-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.builder-chat-message {
    display: flex;
    max-width: 90%;
}

.builder-chat-message--assistant {
    align-self: flex-start;
}

.builder-chat-message--user {
    align-self: flex-end;
}

.builder-chat-message__bubble {
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    line-height: 1.5;
    word-break: break-word;
}

.builder-chat-message--assistant .builder-chat-message__bubble {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-bottom-left-radius: 4px;
}

.builder-chat-message--user .builder-chat-message__bubble {
    background: rgba(0, 245, 255, 0.12);
    color: var(--text-primary);
    border: 1px solid rgba(0, 245, 255, 0.2);
    border-bottom-right-radius: 4px;
}

/* Starter Prompts */
.builder-chat-starters {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.builder-chat-starter {
    text-align: left;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    line-height: 1.4;
}

.builder-chat-starter:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--neon-cyan);
}

/* Typing Indicator */
.builder-chat-typing {
    display: flex;
    gap: 4px;
    padding: var(--space-sm) var(--space-md);
}

.builder-chat-typing span {
    width: 6px;
    height: 6px;
    background: var(--text-tertiary);
    border-radius: 50%;
    animation: typing-bounce 1.2s ease-in-out infinite;
}

.builder-chat-typing span:nth-child(2) { animation-delay: 0.15s; }
.builder-chat-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

/* Chat Input Bar */
.builder-chat-input-bar {
    display: flex;
    align-items: flex-end;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-top: 1px solid var(--border-subtle);
    flex-shrink: 0;
    background: var(--bg-secondary);
}

.builder-chat-input {
    flex: 1;
    resize: none;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    background: var(--bg-input);
    color: var(--text-primary);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    font-family: inherit;
    line-height: 1.4;
    max-height: 100px;
    transition: border-color var(--transition-fast);
}

.builder-chat-input:focus {
    outline: none;
    border-color: var(--neon-cyan);
}

.builder-chat-send-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--neon-cyan);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.builder-chat-send-btn:hover {
    background: #33f7ff;
    box-shadow: 0 0 12px rgba(0, 245, 255, 0.4);
}

/* Scene Summary (below chat) */
.builder-scene-summary-section {
    border-top: 1px solid var(--border-subtle);
    padding: var(--space-sm) var(--space-md);
    flex-shrink: 0;
    max-height: 250px;
    overflow-y: auto;
}

/* Reuse existing builder scene styles */
.builder-scene-summary__env {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.builder-env-row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.builder-env-label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    min-width: 50px;
    font-weight: 500;
}

.builder-env-row .input {
    flex: 1;
}

.builder-env-row--slider {
    gap: var(--space-xs);
}

.builder-env-slider {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-subtle);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.builder-env-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--neon-cyan);
    border: 2px solid var(--bg-surface);
    cursor: pointer;
}

.builder-env-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--neon-cyan);
    border: 2px solid var(--bg-surface);
    cursor: pointer;
}

.builder-env-slider-val {
    font-size: var(--text-xs);
    color: var(--neon-cyan);
    min-width: 24px;
    text-align: right;
    font-family: var(--font-mono);
}

.builder-scene-summary__objects {
    display: flex;
    flex-direction: column;
    gap: 2px;
    max-height: 140px;
    overflow-y: auto;
}

.builder-object-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    font-size: var(--text-sm);
}

.builder-object-item:hover {
    background: var(--bg-tertiary);
}

.builder-object-item.selected {
    background: rgba(0, 245, 255, 0.1);
}

.builder-object-item__color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    flex-shrink: 0;
}

.builder-object-item__name {
    flex: 1;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.builder-object-item.selected .builder-object-item__name {
    color: var(--neon-cyan);
}

.builder-object-item__delete {
    opacity: 0;
    color: var(--text-tertiary);
    padding: 2px;
    border-radius: 2px;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.builder-object-item:hover .builder-object-item__delete {
    opacity: 1;
}

.builder-object-item__delete:hover {
    color: var(--status-error);
    background: rgba(255, 0, 0, 0.1);
}

/* Builder Viewport */
.builder-viewport {
    flex: 1;
    position: relative;
    background: var(--bg-primary);
    overflow: hidden;
}

.builder-viewport canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.builder-viewport__overlay {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
}

.builder-viewport__hint {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 0, 0, 0.6);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

/* Viewport Loading Overlay */
.builder-viewport-loading {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 18, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    z-index: 10;
}

.builder-viewport-loading__text {
    font-family: var(--font-pixel);
    font-size: var(--pixel-sm);
    color: var(--neon-cyan);
    animation: pulse-text 1.5s ease-in-out infinite;
}

@keyframes pulse-text {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Viewport Empty State */
.builder-viewport__empty {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    z-index: 5;
    pointer-events: none;
}

.builder-viewport__empty-icon {
    color: var(--text-tertiary);
    opacity: 0.4;
}

.builder-viewport__empty-text {
    font-family: var(--font-pixel);
    font-size: var(--pixel-xs);
    color: var(--text-tertiary);
    opacity: 0.6;
}

/* Builder Objectives List */
.builder-objectives-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: var(--space-sm);
}

.builder-objective-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    background: var(--bg-tertiary);
}

.builder-objective-item__badge {
    font-family: var(--font-pixel);
    font-size: 8px;
    padding: 2px 5px;
    border-radius: 3px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.builder-objective-item__badge--reach {
    background: rgba(59, 130, 246, 0.2);
    color: #3B82F6;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.builder-objective-item__badge--collect {
    background: rgba(245, 158, 11, 0.2);
    color: #F59E0B;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.builder-objective-item__badge--interact {
    background: rgba(168, 85, 247, 0.2);
    color: #A855F7;
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.builder-objective-item__text {
    flex: 1;
    line-height: 1.3;
}

/* Prompt panel key row (reused) */
.builder-prompt-panel__key-row {
    display: flex;
    gap: var(--space-xs);
}

.builder-prompt-panel__key-row .input {
    flex: 1;
}

.builder-prompt-panel__hint {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    font-style: italic;
}

/* Toolbar Game Type & Grid Controls */
.builder-toolbar__game-type,
.builder-toolbar__grid-size {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.builder-toolbar__label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    font-weight: 500;
    white-space: nowrap;
}

.builder-toolbar__game-type .input {
    min-width: 100px;
}

.builder-toolbar__grid-input {
    width: 60px !important;
    min-width: 60px !important;
    text-align: center;
}

/* Right-Click Context Menu */
.builder-context-menu {
    position: fixed;
    z-index: 9999;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    min-width: 180px;
}

.builder-context-menu__item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.builder-context-menu__item:hover {
    background: rgba(0, 245, 255, 0.1);
    color: var(--neon-cyan);
}

.builder-context-menu__item svg {
    flex-shrink: 0;
    opacity: 0.7;
}

/* Add Object Dialog */
.builder-add-dialog {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}

.builder-add-dialog__content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    width: 460px;
    max-width: 90vw;
    overflow: hidden;
}

.builder-add-dialog__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--border-subtle);
    font-family: var(--font-pixel);
    font-size: var(--pixel-xs);
    color: var(--text-primary);
}

.builder-add-dialog__close {
    font-size: 20px;
    color: var(--text-tertiary);
    cursor: pointer;
    line-height: 1;
    background: none;
    border: none;
    padding: 0;
    transition: color var(--transition-fast);
}

.builder-add-dialog__close:hover {
    color: var(--text-primary);
}

.builder-add-dialog__body {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-lg);
}

.builder-add-dialog__body .input {
    flex: 1;
}

.builder-add-dialog__body .btn {
    flex-shrink: 0;
}

/* Mode Bar (Transform Controls toolbar) */
.builder-viewport__mode-bar {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    display: flex;
    gap: 2px;
    background: rgba(10, 10, 18, 0.85);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 3px;
    z-index: 5;
}

.builder-mode-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.builder-mode-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.builder-mode-btn.active {
    background: rgba(0, 245, 255, 0.15);
    border-color: rgba(0, 245, 255, 0.4);
    color: var(--neon-cyan);
}

.builder-mode-btn svg {
    pointer-events: none;
}