/* Hands-free gesture controls for the C'mon YouTube player. */

:root {
    --cmon-accent: #ff2d55;
    --cmon-bar-bg: rgba(17, 17, 19, 0.72);
    --cmon-btn-bg: rgba(255, 255, 255, 0.12);
    --cmon-btn-ring: rgba(255, 255, 255, 0.28);
    --cmon-fg: #ffffff;
}

/* Stage wraps the iframe and all overlays; it owns the coordinate space. */
#cmon-stage {
    position: relative;
    width: 100%;
    height: 80vh;
    background: #000;
    overflow: hidden;
}

/* Players wrapper owns the iframe layout. One video fills the stage; in split
   mode two videos sit side by side. */
#cmon-players {
    position: absolute;
    inset: 0;
    display: flex;
    z-index: 1;
}

#cmon-players > div,
#player,
#player2 {
    height: 100%;
    border: 0;
}

#player {
    flex: 1;
    width: 100%;
}

/* Second player is hidden until a video is added (split mode). */
#player2 {
    display: none;
}

#cmon-stage.is-split #player,
#cmon-stage.is-split #player2 {
    flex: 1 1 50%;
    width: 50%;
}

#cmon-stage.is-split #player2 {
    display: block;
    border-left: 2px solid rgba(255, 255, 255, 0.25);
}

/* The YT IFrame API swaps each mount div for an iframe; keep it filling. */
#cmon-players iframe {
    width: 100%;
    height: 100%;
}

/* Remove-second-video button, pinned to the top-right of the stage. */
#cmon-remove-video {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 25;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.35);
    background: rgba(17, 17, 19, 0.72);
    color: var(--cmon-fg);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    pointer-events: auto;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, .4);
}

#cmon-remove-video[hidden] {
    display: none;
}

#cmon-remove-video:hover {
    border-color: var(--cmon-accent);
}

/* Overlays sit above the iframe. The layer itself ignores pointer events so
   the native YouTube UI stays usable; only buttons opt back in. */
#cmon-controls,
#cmon-pointer,
#cmon-cam,
#cmon-hint {
    position: absolute;
    z-index: 10;
    pointer-events: none;
}

/* ---- Start gate (one-time, unlocks audio) ----------------------------- */
/* Covers the whole stage above every overlay until the user taps once. */
#cmon-start {
    position: absolute;
    inset: 0;
    z-index: 30;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    border: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    color: var(--cmon-fg);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: opacity .25s ease;
}

#cmon-start.is-hidden {
    opacity: 0;
    pointer-events: none;
}

#cmon-start[hidden] {
    display: none;
}

.cmon-start-disc {
    width: clamp(80px, 12vw, 112px);
    height: clamp(80px, 12vw, 112px);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: clamp(34px, 5vw, 48px);
    background: var(--cmon-btn-bg);
    border: 3px solid var(--cmon-accent);
    box-shadow: 0 6px 24px rgba(0, 0, 0, .5);
    transition: transform .12s ease;
}

#cmon-start:hover .cmon-start-disc,
#cmon-start:focus-visible .cmon-start-disc {
    transform: scale(1.06);
}

#cmon-start:focus-visible {
    outline: 3px solid #fff;
    outline-offset: -6px;
}

.cmon-start-text {
    font: 700 clamp(18px, 2.4vw, 24px)/1.2 system-ui, sans-serif;
    text-shadow: 0 1px 4px rgba(0, 0, 0, .8);
}

.cmon-start-sub {
    font: 500 14px/1.3 system-ui, sans-serif;
    opacity: .85;
    text-align: center;
    max-width: 80%;
}

/* ---- Attention auto play/pause checkbox (top bar) --------------------- */
#cmon-attention-wrap {
    white-space: nowrap;
    font: 500 14px/1.4 system-ui, sans-serif;
}

#cmon-attention-wrap .form-check-input,
#cmon-attention-wrap .form-check-label {
    cursor: pointer;
}

#cmon-attention-wrap .form-check-input:disabled,
#cmon-attention-wrap .form-check-input:disabled ~ .form-check-label {
    cursor: not-allowed;
    opacity: .5;
}

/* ---- Saved-layouts panel (top bar) ------------------------------------ */
#cmon-saved-panel {
    width: min(320px, 90vw);
    max-height: 50vh;
    overflow-y: auto;
    padding: 6px;
    border-radius: 12px;
    background: var(--cmon-bar-bg);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.cmon-saved-row {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-bottom: 4px;
}

.cmon-saved-row:last-child {
    margin-bottom: 0;
}

.cmon-saved-apply {
    flex: 1;
    text-align: left;
    border: 0;
    border-radius: 8px;
    padding: 8px 12px;
    background: var(--cmon-btn-bg);
    color: var(--cmon-fg);
    font: 500 14px/1.2 system-ui, sans-serif;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cmon-saved-apply:hover {
    background: var(--cmon-accent);
}

.cmon-saved-del {
    flex: 0 0 auto;
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 8px;
    background: var(--cmon-btn-bg);
    color: var(--cmon-fg);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.cmon-saved-del:hover {
    background: var(--cmon-accent);
}

.cmon-saved-empty {
    padding: 10px 12px;
    color: rgba(255, 255, 255, .7);
    font: 500 14px/1.2 system-ui, sans-serif;
}

/* ---- Bottom-center control bar ---------------------------------------- */
#cmon-controls {
    left: 50%;
    bottom: clamp(16px, 4vh, 48px);
    transform: translate(-50%, 16px);
    display: flex;
    gap: clamp(16px, 4vw, 40px);
    align-items: flex-end;
    padding: 18px clamp(20px, 4vw, 40px);
    border-radius: 999px;
    background: var(--cmon-bar-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity .25s ease, transform .25s ease;
}

#cmon-controls.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* Once dragged, JS anchors the bar by explicit left/top (set inline), so drop
   the bottom-center centering. The compound selectors below outrank
   `.is-visible` regardless of source order, so the position survives show/hide. */
#cmon-controls.is-dragged,
#cmon-controls.is-dragged.is-visible {
    bottom: auto;
    right: auto;
    transform: none;
}

#cmon-controls.is-dragging {
    transition: none;
}

/* Drag handle — a small grip pinned to the top edge of the bar. The control
   container ignores pointer events, so the handle must opt back in. */
.cmon-drag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    display: grid;
    place-items: center;
    width: 56px;
    height: 22px;
    border-radius: 999px;
    background: var(--cmon-bar-bg);
    color: rgba(255, 255, 255, 0.75);
    font-size: 18px;
    line-height: 1;
    cursor: grab;
    pointer-events: auto;
    touch-action: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .4);
}

.cmon-drag:hover {
    color: #fff;
}

#cmon-controls.is-dragging .cmon-drag {
    cursor: grabbing;
}

.cmon-btn {
    pointer-events: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    border: 0;
    background: none;
    color: var(--cmon-fg);
    font: 600 14px/1 system-ui, sans-serif;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

/* Round target with a dwell-progress ring driven by the --p custom property
   (0 = empty, 1 = full). JS updates --p while the finger hovers. */
.cmon-btn .cmon-disc {
    --p: 0;
    width: clamp(64px, 9vw, 88px);
    height: clamp(64px, 9vw, 88px);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: clamp(26px, 4vw, 36px);
    background:
        conic-gradient(var(--cmon-accent) calc(var(--p) * 360deg), rgba(0, 0, 0, 0) 0) border-box,
        var(--cmon-btn-bg) padding-box;
    border: 3px solid var(--cmon-btn-ring);
    box-shadow: 0 6px 20px rgba(0, 0, 0, .45);
    transition: transform .12s ease, border-color .12s ease;
}

.cmon-btn:hover .cmon-disc,
.cmon-btn.is-targeted .cmon-disc {
    transform: scale(1.06);
    border-color: var(--cmon-accent);
}

.cmon-btn:focus-visible .cmon-disc {
    outline: 3px solid #fff;
    outline-offset: 3px;
}

.cmon-btn .cmon-label {
    text-shadow: 0 1px 3px rgba(0, 0, 0, .8);
    letter-spacing: .02em;
}

/* ---- Finger pointer dot ----------------------------------------------- */
/* Sits above every other overlay so the fingertip dot is never occluded. */
#cmon-pointer {
    z-index: 20;
    width: 22px;
    height: 22px;
    margin: -11px 0 0 -11px;
    border-radius: 50%;
    background: var(--cmon-accent);
    border: 2px solid #fff;
    box-shadow: 0 0 12px rgba(255, 45, 85, .8);
    opacity: 0;
    transition: opacity .2s ease;
}

#cmon-pointer.is-visible {
    opacity: .9;
}

/* ---- Webcam preview (selfie-mirrored) --------------------------------- */
#cmon-cam {
    right: 16px;
    top: 16px;
    width: clamp(120px, 16vw, 180px);
    aspect-ratio: 4 / 3;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .25);
    box-shadow: 0 6px 18px rgba(0, 0, 0, .5);
    opacity: 0;
    transition: opacity .25s ease;
}

#cmon-cam.is-visible {
    opacity: .9;
}

#cmon-cam video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
}

/* ---- Hint / status ---------------------------------------------------- */
#cmon-hint {
    left: 50%;
    top: 16px;
    transform: translateX(-50%);
    max-width: 90%;
    padding: 10px 18px;
    border-radius: 999px;
    background: var(--cmon-bar-bg);
    color: var(--cmon-fg);
    font: 500 14px/1.3 system-ui, sans-serif;
    text-align: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    transition: opacity .25s ease;
}

#cmon-hint.is-visible {
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    #cmon-controls,
    #cmon-cam,
    #cmon-hint,
    #cmon-pointer,
    #cmon-start,
    .cmon-start-disc,
    .cmon-btn .cmon-disc {
        transition: none;
    }
}