:root {
    --primary: #8a2be2;
    --secondary: #ff007f;
    --bg-darker: #09090b;
    --bg-dark: #18181b;
    --bg-panel: #27272a;
    --glass-bg: rgba(39, 39, 42, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f4f4f5;
    --text-muted: #a1a1aa;
    --accent: #0ea5e9;
    --danger: #ef4444;
}

body.light-theme {
    --bg-darker: #f4f4f5;
    --bg-dark: #ffffff;
    --bg-panel: #e4e4e7;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --text-main: #09090b;
    --text-muted: #52525b;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
    user-select: none;
}

body {
    background-color: var(--bg-darker);
    color: var(--text-main);
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

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

/* Top Nav */
.top-nav {
    height: 50px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
}

.logo {
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 1px;
}

.logo span {
    color: var(--primary);
}

.top-properties {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-grow: 1;
    margin-left: 2rem;
}

.placeholder-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
}

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

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
}

/* Workspace */
.workspace {
    display: flex;
    flex-grow: 1;
    overflow: hidden;
}

/* Left Toolbar */
.left-toolbar {
    width: 50px;
    background: var(--bg-dark);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 1rem;
    gap: 0.5rem;
}

.tool-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s;
}

.tool-btn:hover {
    color: var(--text-main);
    background: rgba(255,255,255,0.05);
}

.tool-btn.active {
    color: white;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
}

/* Center Canvas Area */
.canvas-area {
    flex-grow: 1;
    background: #111;
    background-image: 
        linear-gradient(45deg, #1a1a1a 25%, transparent 25%, transparent 75%, #1a1a1a 75%, #1a1a1a), 
        linear-gradient(45deg, #1a1a1a 25%, transparent 25%, transparent 75%, #1a1a1a 75%, #1a1a1a);
    background-size: 20px 20px;
    background-position: 0 0, 10px 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden; /* For panning */
}

#main-canvas {
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
    background: white; /* Default base canvas color */
    transform-origin: 0 0;
}

.welcome-screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: var(--glass-bg);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.studio-card {
    background: var(--bg-panel);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 2rem;
    width: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.2s, box-shadow 0.2s;
}
.studio-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.timeline-panel {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 10;
}

.welcome-screen h2 {
    font-weight: 600;
}

.welcome-screen p {
    color: var(--text-muted);
}

/* Right Sidebar */
.right-sidebar {
    width: 280px;
    background: var(--bg-dark);
    border-left: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.panel {
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
}

.panel:first-child {
    flex: 1;
    min-height: 0;
}

.panel-header {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-panel);
}

.panel-header h3 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.panel-actions button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 2px 6px;
    border-radius: 4px;
}
.panel-actions button:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.layer-list {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.layer-item {
    display: flex;
    align-items: center;
    padding: 0.5rem;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.layer-item:hover {
    background: rgba(255,255,255,0.05);
}

.layer-item.active {
    background: var(--primary);
    color: white;
}

.layer-thumb {
    width: 30px;
    height: 30px;
    background: #000;
    border-radius: 4px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.7rem;
    overflow: hidden;
}

.layer-thumb img, .layer-thumb canvas {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.panel-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

input[type="range"] {
    width: 100%;
    accent-color: var(--primary);
}

/* Tool Properties Dynamic UI */
.prop-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.prop-group input[type="color"] {
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.prop-group input[type="number"], .prop-group input[type="text"] {
    background: var(--bg-panel);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    width: 60px;
}

.prop-group select {
    background: var(--bg-panel);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}