:root {
    --bg-main: #0f1117;
    --bg-panel: #161a23;
    --bg-panel-alt: #1e2330;
    --bg-hover: #262c3d;

    --accent: #4da3ff;
    --accent-alt: #7c8cff;
    --danger: #ff4d4d;
    --success: #4dff88;
    --warning: #ffcc4d;

    --text-main: #e6e9f0;
    --text-muted: #9aa1b2;

    --border: #2a3042;
    --shadow: rgba(0, 0, 0, 0.45);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;

    --transition-fast: 0.15s ease;
    --transition: 0.25s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Inter", "Segoe UI", system-ui, sans-serif;
}

body {
    background: var(--bg-main);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

.editor {
    display: grid;
    grid-template-columns: 260px 1fr 320px;
    grid-template-rows: 56px 1fr 180px;
    height: 100%;
}

.topbar {
    grid-column: 1 / -1;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
}

.sidebar {
    background: var(--bg-panel);
    border-right: 1px solid var(--border);
    padding: 12px;
    overflow-y: auto;
}

.properties {
    background: var(--bg-panel);
    border-left: 1px solid var(--border);
    padding: 12px;
    overflow-y: auto;
}

.preview {
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline {
    grid-column: 1 / -1;
    background: var(--bg-panel-alt);
    border-top: 1px solid var(--border);
    padding: 10px;
    position: relative; 
}

.button {
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-fast),
                box-shadow var(--transition-fast),
                opacity var(--transition-fast);
}

.button:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px var(--shadow);
}

.button:active {
    transform: scale(0.97);
}

.button.secondary {
    background: var(--bg-hover);
    color: var(--text-main);
}

.button.danger {
    background: var(--danger);
}

.button.icon {
    padding: 8px;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-alt);
}

input,
select,
textarea {
    width: 100%;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    outline: none;
    transition: border var(--transition),
                box-shadow var(--transition);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(77, 163, 255, 0.25);
}

label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
    display: block;
}

input[type="range"] {
    appearance: none;
    height: 6px;
    background: var(--border);
    border-radius: 999px;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toggle input {
    display: none;
}

.toggle span {
    width: 38px;
    height: 20px;
    background: var(--border);
    border-radius: 999px;
    position: relative;
    cursor: pointer;
}

.toggle span::after {
    content: "";
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform var(--transition);
}

.toggle input:checked + span {
    background: var(--accent);
}

.toggle input:checked + span::after {
    transform: translateX(18px);
}

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

.tab {
    padding: 10px 14px;
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition),
                background var(--transition);
}

.tab.active {
    color: var(--text-main);
    background: var(--bg-hover);
}

.card {
    background: var(--bg-panel-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px;
    margin-bottom: 12px;
    box-shadow: 0 4px 12px var(--shadow);
}

.track {
    height: 32px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 6px;
    position: relative;
}

.clip {
    position: absolute;
    height: 100%;
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    border-radius: var(--radius-sm);
    cursor: grab;
}

.clip:active {
    cursor: grabbing;
}

.tooltip {
    position: absolute;
    background: #000;
    color: #fff;
    padding: 6px 10px;
    font-size: 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.context-menu {
    position: absolute;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: 0 10px 30px var(--shadow);
    min-width: 180px;
    position: absolute;
}

.context-menu button {
    width: 100%;
    background: none;
    border: none;
    padding: 10px;
    text-align: left;
    color: var(--text-main);
    cursor: pointer;
}

.context-menu button:hover {
    background: var(--bg-hover);
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-panel);
    padding: 20px;
    border-radius: var(--radius-lg);
    width: 420px;
    box-shadow: 0 20px 50px var(--shadow);
}

::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 999px;
}

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

video {
    height: 100%;
    background: black;
    outline: none;
}

#line {
    position: absolute;
    top: 0;
    left: 300px;
    width: 2px;
    height: 100%;
    background-color: black;
    cursor: move;
}

.timecase {
    width: 100%;
    height: 15px;
    margin-bottom: 5px;
    background: repeating-linear-gradient(
        to right,
        black 0px,
        black 1px,
        transparent 1px,
        transparent 10px
    );
}