/* CANVAS CLOUD - Styles */
:root {
    --bg-dark: #1a1a2e;
    --bg-panel: #16213e;
    --bg-section: #1f2b47;
    --accent: #00d9ff;
    --accent-hover: #00b8d9;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --border-color: #2d3a5a;
    --success: #48bb78;
    --warning: #ed8936;
    --error: #f56565;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
}

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

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
}

.header h1 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--accent);
}

.header-actions {
    display: flex;
    gap: 8px;
}

.header-actions button {
    padding: 8px 14px;
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.header-actions button:hover {
    background: var(--accent);
    color: var(--bg-dark);
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Canvas Area */
.canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: #0d0d1a;
    overflow: hidden;
    transition: all 0.2s;
    position: relative;
}

.canvas-container.drag-over {
    background: rgba(76, 175, 80, 0.1);
    outline: 3px dashed var(--success);
    outline-offset: -8px;
}

.canvas-container.drag-over::after {
    content: '📷 Drop image here';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    color: var(--success);
    pointer-events: none;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.7);
    padding: 20px 40px;
    border-radius: 12px;
}

.canvas-wrapper {
    position: absolute;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    transform-origin: 0 0;
    transition: none;
}

.canvas-wrapper canvas {
    position: absolute;
    top: 0;
    left: 0;
}

/* Zoom Controls */
.zoom-controls {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(30, 30, 50, 0.9);
    border-radius: 25px;
    border: 1px solid var(--border-color);
    z-index: 100;
    backdrop-filter: blur(8px);
}

.zoom-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-dark);
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.zoom-btn:hover {
    background: var(--accent);
    color: var(--bg-dark);
}

.zoom-level {
    min-width: 50px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

#canvas-image {
    z-index: 1;
}

#canvas-ink {
    z-index: 2;
    cursor: crosshair;
}

#canvas-ink.tool-brush { cursor: crosshair; }
#canvas-ink.tool-eraser { cursor: cell; }
#canvas-ink.tool-line { cursor: crosshair; }
#canvas-ink.tool-text { cursor: text; }

.text-input-overlay {
    position: absolute;
    z-index: 100;
    background: rgba(0, 0, 0, 0.1);
    border: 2px dashed var(--accent);
    border-radius: 4px;
    padding: 6px 10px;
    min-width: 150px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.text-input-overlay input {
    background: transparent;
    border: none;
    outline: none;
    color: inherit;
    font: inherit;
    width: 100%;
    min-width: 100px;
}

.text-input-overlay input::placeholder {
    color: inherit;
    opacity: 0.5;
}

.line-preview {
    position: absolute;
    z-index: 5;
    pointer-events: none;
    border-top: 2px solid var(--accent);
    transform-origin: left center;
}

.canvas-status {
    text-align: center;
    padding: 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Right Panel */
.right-panel {
    width: 320px;
    background: var(--bg-panel);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.panel-section {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.panel-section h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

/* Tool Selector */
.tool-selector {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.tool-btn {
    flex: 1;
    padding: 10px 8px;
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tool-btn:hover {
    background: var(--bg-dark);
    border-color: var(--accent);
}

.tool-btn.active {
    background: var(--accent);
    border-color: var(--accent);
}

/* Tool Settings */
.tool-settings {
    margin-bottom: 12px;
}

.tool-settings.hidden {
    display: none;
}

.tool-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.tool-row label {
    font-size: 0.85rem;
    min-width: 70px;
    color: var(--text-secondary);
}

.tool-row input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
}

.tool-row input[type="color"] {
    width: 40px;
    height: 30px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.tool-row select {
    flex: 1;
    padding: 6px 10px;
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.checkbox-row {
    gap: 15px !important;
}

.checkbox-row label {
    min-width: auto;
    display: flex;
    align-items: center;
    gap: 5px;
    cursor: pointer;
}

.checkbox-row input[type="checkbox"] {
    accent-color: var(--accent);
}

.color-presets {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.color-preset {
    width: 20px;
    height: 20px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    cursor: pointer;
    padding: 0;
}

.color-preset:hover {
    transform: scale(1.2);
}

.tool-buttons {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.btn-small {
    flex: 1;
    padding: 6px 12px;
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.btn-small:hover {
    background: var(--error);
}

/* Layers */
.layers-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.layer-toolbar {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.layer-btn {
    flex: 1;
    min-width: 70px;
    padding: 6px 8px;
    font-size: 0.75rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.layer-btn:hover {
    background: var(--accent);
    color: var(--bg-dark);
    border-color: var(--accent);
}

.layers-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 200px;
    overflow-y: auto;
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    background: var(--bg-section);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.layer-item.selected {
    border-color: var(--accent);
}

.layer-visibility {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 4px;
    background: transparent;
    border: none;
    font-size: 1rem;
}

.layer-visibility:hover {
    background: var(--bg-dark);
}

.layer-name {
    flex: 1;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.layer-type {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 10px;
    background: var(--accent);
    color: var(--bg-dark);
}

.layer-type.ink {
    background: var(--warning);
}

.layer-controls {
    display: flex;
    gap: 4px;
}

.layer-controls button {
    width: 22px;
    height: 22px;
    border: none;
    background: var(--bg-dark);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.layer-controls button:hover {
    background: var(--accent);
    color: var(--bg-dark);
}

.layer-opacity-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    background: var(--bg-section);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.layer-opacity-control label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.layer-opacity-control input[type="range"] {
    width: 100%;
}

.layer-actions {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.layer-action-btn {
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.65rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: all 0.2s;
}

.layer-action-btn:hover {
    background: var(--bg-dark);
    opacity: 1;
}

.layer-action-btn.merge:hover {
    color: var(--accent);
}

.layer-action-btn.duplicate:hover {
    color: var(--success);
}

.layer-action-btn.upload:hover {
    color: var(--warning);
}

/* AI Section */
.ai-section {
    flex: 1;
}

.ai-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ai-controls label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.ai-controls .prompt-hint {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.7;
    font-style: italic;
}

.mode-hint {
    padding: 10px 12px;
    background: rgba(99, 179, 237, 0.15);
    border: 1px solid rgba(99, 179, 237, 0.3);
    border-radius: 6px;
    font-size: 0.8rem;
    color: var(--info);
    line-height: 1.4;
}

.mode-hint.hidden {
    display: none;
}

.mode-hint strong {
    color: var(--text-primary);
}

.ai-controls textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-section);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    resize: vertical;
}

.ai-controls textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.ai-options {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ai-options select {
    flex: 1;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-section);
    color: var(--text-primary);
    font-size: 0.85rem;
}

.ai-options input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
}

.btn-primary {
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--accent) 0%, #0099cc 100%);
    border: none;
    border-radius: 8px;
    color: var(--bg-dark);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 217, 255, 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* History */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 150px;
    overflow-y: auto;
}

.history-empty {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    text-align: center;
    padding: 10px;
}

.history-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: var(--bg-section);
    border-radius: 4px;
    font-size: 0.8rem;
}

.history-item img {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 4px;
}

.history-item-info {
    flex: 1;
    overflow: hidden;
}

.history-item-prompt {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-secondary);
}

.history-item-mode {
    font-size: 0.7rem;
    color: var(--accent);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-text {
    margin-top: 20px;
    font-size: 1.1rem;
    color: var(--accent);
}

/* Toast Messages */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1001;
}

.toast {
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-size: 0.9rem;
    animation: slideIn 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.toast.success { background: var(--success); }
.toast.warning { background: var(--warning); }
.toast.error { background: var(--error); }
.toast.info { background: var(--accent); color: var(--bg-dark); }

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Settings Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--bg-panel);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.2rem;
    color: var(--accent);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
}

.modal-close:hover {
    background: var(--bg-section);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.settings-section {
    margin-bottom: 24px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.settings-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.settings-desc a {
    color: var(--accent);
}

.settings-row {
    display: flex;
    gap: 8px;
}

.settings-input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-section);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: monospace;
}

.settings-input:focus {
    outline: none;
    border-color: var(--accent);
}

.settings-select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-section);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.settings-status {
    margin-top: 8px;
    font-size: 0.8rem;
    padding: 6px 10px;
    border-radius: 4px;
}

.settings-status.success {
    background: rgba(72, 187, 120, 0.2);
    color: var(--success);
}

.settings-status.error {
    background: rgba(245, 101, 101, 0.2);
    color: var(--error);
}

.settings-status.warning {
    background: rgba(237, 137, 54, 0.2);
    color: var(--warning);
}

/* AI Modes Section */
.modes-section {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    margin-top: 10px;
}

.modes-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
    max-height: 250px;
    overflow-y: auto;
}

.mode-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.mode-item:hover {
    border-color: var(--accent);
    background: var(--bg-dark);
}

.mode-item.builtin {
    opacity: 0.8;
}

.mode-icon {
    font-size: 1.2rem;
}

.mode-info {
    flex: 1;
    min-width: 0;
}

.mode-name {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 2px;
}

.mode-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.mode-badges {
    display: flex;
    gap: 4px;
}

.mode-badge {
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 10px;
    background: var(--bg-dark);
    color: var(--text-secondary);
}

.mode-badge.sends-image {
    background: rgba(99, 179, 237, 0.2);
    color: var(--info);
}

.mode-badge.smart {
    background: rgba(167, 139, 250, 0.25);
    color: #a78bfa;
}

.mode-item.smart {
    border-color: rgba(167, 139, 250, 0.3);
}

.mode-edit-btn {
    padding: 6px 10px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
}

.mode-edit-btn:hover {
    background: var(--accent);
    color: var(--bg-dark);
    border-color: var(--accent);
}

/* Mode Editor */
.settings-textarea {
    width: 100%;
    min-height: 60px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-section);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.85rem;
    resize: vertical;
}

.settings-textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.settings-section label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.settings-section label .hint {
    font-size: 0.75rem;
    opacity: 0.7;
    font-style: italic;
}

.settings-section label input[type="checkbox"] {
    margin-right: 8px;
}

.settings-desc code {
    background: var(--bg-dark);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
}

.btn-secondary {
    padding: 10px 18px;
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-danger {
    padding: 10px 18px;
    background: rgba(245, 101, 101, 0.2);
    border: 1px solid var(--error);
    border-radius: 6px;
    color: var(--error);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-danger:hover {
    background: var(--error);
    color: white;
}

.modal-large {
    max-width: 600px;
    max-height: 85vh;
}

.modal-large .modal-body {
    max-height: 60vh;
    overflow-y: auto;
}

/* Responsive */
@media (max-width: 900px) {
    .main-content {
        flex-direction: column;
    }
    
    .right-panel {
        width: 100%;
        max-height: 50vh;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
    
    .canvas-container {
        flex: none;
        height: 50vh;
    }
}