:root {
    --bg-color: #0d0f14;
    --panel-bg: rgba(20, 24, 33, 0.6);
    --panel-border: rgba(255, 255, 255, 0.08);
    --primary: #5c3ff6;
    --primary-hover: #7b61ff;
    --danger: #ff4757;
    --danger-hover: #ff6b81;
    --text-main: #f1f2f6;
    --text-muted: #a4b0be;
    --handle-color: #00ffff;
    --handle-size: 16px;
    --transition: 0.2s ease-in-out;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: #000000;
    color: var(--text-main);
    overflow: hidden; /* No scrollbars on main window */
    user-select: none;
}


#app {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* --------------------
   Projection Area
-------------------- */
#projection-area {
    position: relative;
    flex-grow: 1;
    height: 100vh;
    overflow: hidden;
    perspective: 2000px;
    transform-style: preserve-3d;
    cursor: grab; /* For panning */
}

#projection-area:active {
    cursor: grabbing;
}

#workspace-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: 0 0;
    pointer-events: none; /* Let clicks pass unless explicit */
    transform-style: preserve-3d;
}

#output-bounds {
    position: absolute;
    top: 0;
    left: 0;
    border: 2px dashed rgba(255, 255, 255, 0.4);
    box-shadow: inset 0 0 40px rgba(0, 255, 255, 0.1);
    pointer-events: none;
    z-index: 10;
}

#output-bounds::before {
    content: 'Projector Output (Dual Display)';
    position: absolute;
    top: -24px;
    left: 0;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    font-weight: 600;
}

.hidden { display: none !important; }

/* Surface containers and content */
.surface-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Let clicks pass to handles */
    transform-origin: 0 0;
}

.surface-content {
    position: absolute;
    top: 0;
    left: 0;
    /* Real aspect ratio defined in JS, e.g. 1000x1000 */
    transform-origin: 0 0;
    background: transparent;
    overflow: hidden;
    pointer-events: auto; /* Allow dragging */
    cursor: grab;
}

.surface-content.active {
    outline: 4px solid var(--primary);
    outline-offset: -4px;
    box-shadow: inset 0 0 40px rgba(92, 63, 246, 0.6);
}

.surface-text-layer {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow: hidden;
    padding: 10px;
    box-sizing: border-box;
}

.surface-content:active {
    cursor: grabbing;
}

.surface-content img,
.surface-content video {
    width: 100%;
    height: 100%;
}

/* Corner Handles */
.handle {
    position: absolute;
    width: var(--handle-size);
    height: var(--handle-size);
    background-color: var(--handle-color);
    border: 2px solid #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: grab;
    pointer-events: auto; /* Handles are clickable */
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    z-index: 1000;
    transition: transform 0.1s, background-color 0.2s;
}

.handle:hover {
    transform: translate(-50%, -50%) scale(1.3);
    background-color: #fff;
}

.handle:focus {
    outline: 2px solid #fff;
    outline-offset: 4px;
    background-color: #fff;
}

.handle:active {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(0.9);
}

.handle.hidden {
    display: none !important;
}

/* Edge Handles */
.edge-handle {
    position: absolute;
    height: 12px; /* Hitbox thickness */
    background-color: transparent;
    cursor: grab;
    pointer-events: auto; /* Hitbox is clickable */
    z-index: 999; /* Just below corner handles */
    transform-origin: 0 50%;
    transition: background-color 0.2s;
}

.edge-handle:hover, .edge-handle:focus {
    background-color: rgba(0, 255, 255, 0.4); /* subtle highlight */
    outline: none;
}

.edge-handle:active {
    cursor: grabbing;
}

.edge-handle.hidden {
    display: none !important;
}

/* --------------------
   Glassmorphism UI Panel
-------------------- */
.ui-panel {
    position: absolute;
    top: 20px;
    bottom: 20px;
    width: 340px;
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    z-index: 2000;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s;
}

#left-panel {
    left: 20px;
}

#right-panel {
    right: 20px;
}

/* Presentation Mode Class */
body.presentation-mode #left-panel {
    transform: translateX(-120%);
    opacity: 0;
    pointer-events: none;
}
body.presentation-mode #right-panel {
    transform: translateX(120%);
    opacity: 0;
    pointer-events: none;
}
body.presentation-mode {
    cursor: none; /* Hide cursor in presentation mode */
}

.ui-panel header {
    display: flex;
    justify-content: flex-start;
    gap: 16px;
    align-items: center;
    margin-bottom: 24px;
}

.ui-panel header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.ui-panel header h1 i {
    color: var(--primary);
}

.actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

.save-load {
    display: flex;
    gap: 12px;
}

.save-load button {
    flex: 1;
}

/* Buttons */
button {
    font-family: inherit;
    border: none;
    outline: none;
    cursor: pointer;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.primary-btn {
    background: var(--primary);
    color: #fff;
    padding: 12px 16px;
    width: 100%;
    box-shadow: 0 4px 12px rgba(92, 63, 246, 0.3);
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(92, 63, 246, 0.4);
}

.primary-btn:active {
    transform: translateY(0);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    padding: 10px 16px;
    border: 1px solid rgba(255,255,255,0.1);
}

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

.icon-btn {
    background: transparent;
    color: var(--text-muted);
    font-size: 1.1rem;
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.icon-btn:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

.btn-danger:hover {
    color: var(--danger);
    background: rgba(255, 71, 87, 0.1);
}

/* Layer List */
.layer-list-header {
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 8px;
    margin-bottom: 16px;
}

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

#layer-list {
    flex-grow: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 8px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Scrollbar styling */
#layer-list::-webkit-scrollbar {
    width: 6px;
}
#layer-list::-webkit-scrollbar-track {
    background: transparent;
}
#layer-list::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 10px;
}

/* Individual Layer Item */
.layer-item {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 16px;
    transition: var(--transition);
}

.layer-item.active {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(92, 63, 246, 0.3);
}

.layer-item:hover {
    border-color: rgba(255,255,255,0.15);
}

.layer-item-placeholder {
    background: rgba(255,255,255,0.02);
    border: 2px dashed rgba(255,255,255,0.1);
    box-shadow: none;
    padding: 0;
}

.dragging-smooth {
    position: fixed !important;
    z-index: 10000;
    pointer-events: none !important;
    box-shadow: 0 20px 40px rgba(0,0,0,0.8) !important;
    opacity: 0.95 !important;
    border-color: var(--primary) !important;
    cursor: grabbing !important;
    transition: none !important;
    margin: 0 !important;
}

.layer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.layer-title {
    font-weight: 600;
    font-size: 1rem;
    color: #fff;
    outline: none;
    border-bottom: 1px dashed transparent;
}

.layer-title:focus {
    border-bottom: 1px dashed var(--primary);
}

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

/* Media Controls inside layer */
.layer-body label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.media-type-select, .fit-mode-select, .text-font-select, .text-fit-mode-select {
    width: 100%;
    appearance: none;
    -webkit-appearance: none;
    background-color: rgba(255, 255, 255, 0.05);
    background-image: url('data:image/svg+xml;utf8,<svg fill="%23ffffff" height="24" viewBox="0 0 24 24" width="24" xmlns="http://www.w3.org/2000/svg"><path d="M7 10l5 5 5-5z"/><path d="M0 0h24v24H0z" fill="none"/></svg>');
    background-repeat: no-repeat;
    background-position: right 8px center;
    color: #fff;
    border: 1px solid var(--panel-border);
    padding: 8px 32px 8px 12px;
    border-radius: 6px;
    margin-bottom: 12px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    transition: all var(--transition);
}

.media-type-select:hover, .fit-mode-select:hover, .text-font-select:hover, .text-fit-mode-select:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.media-type-select:focus, .fit-mode-select:focus, .text-font-select:focus, .text-fit-mode-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(92, 63, 246, 0.2);
}

.media-type-select option, .fit-mode-select option, .text-font-select option, .text-fit-mode-select option {
    background-color: var(--bg-color);
    color: #fff;
}

.media-inputs {
    margin-bottom: 12px;
    min-height: 36px;
}

.input-group {
    display: none;
}

.input-group.group-active {
    display: flex;
    gap: 8px;
}

.input-group.text-input.group-active {
    display: block;
}

.color-picker {
    width: 100%;
    height: 36px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: transparent;
}
.color-picker::-webkit-color-swatch-wrapper {
    padding: 0;
}
.color-picker::-webkit-color-swatch {
    border: none;
    border-radius: 6px;
}

.file-picker {
    width: 100%;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.file-picker::-webkit-file-upload-button {
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--panel-border);
    color: #fff;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: 0.2s;
    margin-right: 8px;
}
.file-picker::-webkit-file-upload-button:hover {
    background: rgba(255,255,255,0.2);
}

.url-text {
    flex-grow: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--panel-border);
    color: #fff;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    min-width: 0;
}
.btn-url-apply {
    background: rgba(255,255,255,0.1);
    color: #fff;
    padding: 0 12px;
}
.btn-url-apply:hover {
    background: rgba(255,255,255,0.2);
}

.opacity-control {
    margin-bottom: 16px;
}

.opacity-slider, .styled-slider {
    width: 100%;
    accent-color: var(--primary);
}

.slider-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4px;
}

.num-input {
    width: 60px;
    background: rgba(255,255,255,0.05);
    color: #fff;
    border: 1px solid var(--panel-border);
    border-radius: 4px;
    padding: 2px 4px;
    font-size: 0.75rem;
    outline: none;
    font-family: inherit;
    text-align: right;
}

.num-input:focus {
    border-color: var(--primary);
}

.btn-reset-corners {
    width: 100%;
    font-size: 0.8rem;
    padding: 6px 12px;
}

footer {
    margin-top: 16px;
    text-align: center;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.3);
}