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

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --accent: #e94560;
    --accent-hover: #ff6b7a;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --border: #2a2a3e;
    --success: #4caf50;
    --warning: #ff9800;
    --shadow: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    width: 1200px;
    height: 1024px;
    margin: 0 auto;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border);
    padding: 10px 20px;
    box-shadow: 0 2px 10px var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.5em;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 10px;
}

.btn-icon {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

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

.controls-left {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn-control {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.2s;
}

.btn-control:hover:not(:disabled) {
    background: var(--accent);
    transform: translateY(-2px);
}

.btn-control:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

.controls-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.image-preview-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.image-preview {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: var(--bg-tertiary);
    transition: all 0.2s;
}

.image-preview:hover {
    border-color: var(--accent);
    background: var(--bg-primary);
}

.image-placeholder {
    font-size: 1.5em;
    color: var(--text-secondary);
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.image-preview-container small {
    font-size: 0.7em;
    color: var(--text-secondary);
}

/* Image Tab */
.image-tab-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 15px;
}

.image-preview-large {
    width: 100%;
    min-height: 200px;
    max-height: 300px;
    border: 2px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: var(--bg-tertiary);
    transition: all 0.2s;
    margin-bottom: 20px;
    overflow: hidden;
}

.image-preview-large:hover {
    border-color: var(--accent);
    background: var(--bg-primary);
}

.image-placeholder-large {
    font-size: 2em;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.5;
}

.image-preview-large img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Time Bar */
.time-bar-container {
    background: var(--bg-secondary);
    padding: 8px 20px;
    border-bottom: 1px solid var(--border);
}

#timeBar {
    width: 100%;
    height: 30px;
    background: var(--bg-primary);
    border-radius: 4px;
}

/* Main Container */
.main-container {
    display: flex;
    flex: 1;
    overflow: hidden;
    min-height: 0;
}

/* Canvas Panel */
.canvas-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-right: 2px solid var(--border);
    min-width: 0;
}

.tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 20px;
    cursor: pointer;
    font-size: 0.95em;
    transition: all 0.2s;
    border-bottom: 2px solid transparent;
}

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

.tab-btn.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
    background: var(--bg-secondary);
}

.tab-content {
    display: none;
    flex: 1;
    overflow: auto;
    padding: 10px;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
}

.canvas-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        linear-gradient(45deg, #1a1a1a 25%, transparent 25%),
        linear-gradient(-45deg, #1a1a1a 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #1a1a1a 75%),
        linear-gradient(-45deg, transparent 75%, #1a1a1a 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    border: 2px solid var(--border);
    border-radius: 8px;
    overflow: auto;
    position: relative;
}

#canvasEffect,
#canvasExport {
    display: block;
    background: transparent;
    cursor: crosshair;
}

.output-controls {
    display: flex;
    gap: 10px;
    margin-bottom: 10px;
    justify-content: flex-end;
}

.btn-export {
    background: var(--accent);
    border: none;
    color: var(--text-primary);
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-export:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow);
}

/* Properties Panel */
.properties-panel {
    width: 300px;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-left: 2px solid var(--border);
}

.property-grid {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
}

.property-group {
    margin-bottom: 20px;
}

.property-group-title {
    font-size: 0.9em;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.property-item {
    margin-bottom: 12px;
}

.property-label {
    display: block;
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.property-input {
    width: 100%;
    padding: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 0.9em;
}

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

.property-input[type="range"] {
    padding: 0;
}

.property-input[type="color"] {
    height: 40px;
    cursor: pointer;
}

.property-description {
    font-size: 0.75em;
    color: var(--text-secondary);
    margin-top: 4px;
    font-style: italic;
}

.property-range {
    display: flex;
    gap: 10px;
    align-items: center;
}

.property-range input {
    flex: 1;
}

.property-range span {
    font-size: 0.8em;
    color: var(--text-secondary);
    min-width: 40px;
    text-align: center;
}

/* Status Bar */
.status-bar {
    background: var(--bg-secondary);
    padding: 8px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    font-size: 0.85em;
    color: var(--text-secondary);
}

.file-name {
    color: var(--accent);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

.modal-header h2 {
    font-size: 1.3em;
    color: var(--text-primary);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5em;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

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

.modal-body {
    padding: 20px;
}

.modal-body label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.modal-body input[type="text"],
.modal-body input[type="file"] {
    width: 100%;
    padding: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9em;
    margin-bottom: 15px;
}

.modal-body input[type="file"] {
    cursor: pointer;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 20px;
}

.btn-primary {
    background: var(--accent);
    border: none;
    color: var(--text-primary);
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9em;
    transition: all 0.2s;
}

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

.modal-body a {
    color: var(--accent);
    text-decoration: none;
}

.modal-body a:hover {
    text-decoration: underline;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}