/**
 * LearnDash Shorts Player Styles
 * Responsive, high-contrast controls for lesson/topic short-form learning.
 */

/* ─── Theme Variables ─────────────────────────────────────── */

#shorts-player-modal[data-theme="dark"] {
    --lds-bg: #000000;
    --lds-bg-rgb: 0, 0, 0;
    --lds-text: #ffffff;
    --lds-text-muted: rgba(255, 255, 255, 0.78);
    --lds-surface: rgba(255, 255, 255, 0.12);
    --lds-surface-hover: rgba(255, 255, 255, 0.2);
    --lds-border: rgba(255, 255, 255, 0.24);
    --lds-border-hover: rgba(255, 255, 255, 0.42);
    --lds-progress-active: #ffffff;
    --lds-progress-inactive: rgba(255, 255, 255, 0.28);
    --lds-correct-bg: rgba(34, 197, 94, 0.22);
    --lds-correct: #22c55e;
    --lds-incorrect-bg: rgba(239, 68, 68, 0.24);
    --lds-incorrect: #ef4444;
    --lds-gradient-from: rgba(0, 0, 0, 0.9);
    --lds-overlay-bg: rgba(0, 0, 0, 0.5);
    --lds-nav-accent: #F59E0B;
    --lds-nav-control-bg: rgba(10, 10, 10, 0.45);
    --lds-nav-control-border: rgba(255, 255, 255, 0.28);
}

#shorts-player-modal[data-theme="light"] {
    --lds-bg: #f8fafc;
    --lds-bg-rgb: 248, 250, 252;
    --lds-text: #0f172a;
    --lds-text-muted: rgba(15, 23, 42, 0.72);
    --lds-surface: rgba(15, 23, 42, 0.08);
    --lds-surface-hover: rgba(15, 23, 42, 0.13);
    --lds-border: rgba(15, 23, 42, 0.18);
    --lds-border-hover: rgba(15, 23, 42, 0.3);
    --lds-progress-active: #0f172a;
    --lds-progress-inactive: rgba(15, 23, 42, 0.18);
    --lds-correct-bg: rgba(22, 163, 74, 0.12);
    --lds-correct: #16a34a;
    --lds-incorrect-bg: rgba(220, 38, 38, 0.13);
    --lds-incorrect: #dc2626;
    --lds-gradient-from: rgba(248, 250, 252, 0.95);
    --lds-overlay-bg: rgba(248, 250, 252, 0.65);
    --lds-nav-accent: #F59E0B;
    --lds-nav-control-bg: rgba(248, 250, 252, 0.72);
    --lds-nav-control-border: rgba(15, 23, 42, 0.18);
}

/* ─── Modal Base ──────────────────────────────────────────── */

#shorts-player-modal {
    background-color: var(--lds-bg, #000);
    color: var(--lds-text, #fff);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    height: 100dvh;
    overscroll-behavior: contain;
    touch-action: manipulation;
    --lds-top-control-size: 2.25rem;
    --lds-top-control-gap: 0.55rem;
    --lds-top-control-width: min(560px, calc(100vw - 1rem));
}

body.ld-shorts-modal-open {
    overflow: hidden !important;
}

/* ─── Top Controls ─────────────────────────────────────────── */

#shorts-top-controls {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: var(--lds-top-control-width);
    max-width: 100%;
    z-index: 80;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--lds-top-control-gap);
    padding: calc(env(safe-area-inset-top) + 0.5rem) 0.5rem 0;
    pointer-events: none;
    box-sizing: border-box;
}

/* ─── Launch Button ───────────────────────────────────────── */

.ld-shorts-launcher {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 1.25rem 0;
    box-sizing: border-box;
}

.ld-shorts-open-btn {
    display: grid !important;
    place-items: center !important;
    text-align: center !important;
    line-height: 1.1 !important;
    width: 100%;
    max-width: none;
    color: #ffffff;
    font-family: inherit;
    font-weight: 700;
    font-size: 0.95rem;
    min-height: 2.8rem;
    padding: 0.68rem 1.05rem;
    border-radius: 12px;
    border: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
    transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.ld-shorts-open-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    line-height: 1.08;
    white-space: nowrap;
}

.ld-shorts-open-btn--small {
    min-height: 2.3rem;
    padding: 0.52rem 0.9rem;
    font-size: 0.88rem;
    border-radius: 10px;
    max-width: 460px;
}

.ld-shorts-open-btn--medium {
    min-height: 2.8rem;
    padding: 0.68rem 1.05rem;
    font-size: 0.95rem;
    border-radius: 12px;
    max-width: 680px;
}

.ld-shorts-open-btn--large {
    min-height: 3.35rem;
    padding: 0.86rem 1.2rem;
    font-size: 1.05rem;
    border-radius: 15px;
    max-width: 860px;
}

.ld-shorts-open-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: underline;
    text-underline-offset: 2px;
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.4;
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    box-shadow: none;
    width: auto;
}

.ld-shorts-open-link:hover,
.ld-shorts-open-link:focus,
.ld-shorts-open-link:active {
    opacity: 1;
    color: inherit !important;
    background: transparent !important;
    box-shadow: none !important;
    border: none !important;
}

.ld-shorts-open-btn:hover {
    opacity: 0.94;
    transform: translateY(-1px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.24);
}

.ld-shorts-open-btn--animated {
    position: relative;
    isolation: isolate;
    overflow: hidden;
    border: none;
    border: 1px solid rgba(255, 255, 255, 0.22);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.22);
    background: var(--lds-launcher-fill, linear-gradient(135deg, #2563EB 0%, #1E3A8A 100%));
}

.ld-shorts-open-btn--animated::before {
    content: none;
}

.ld-shorts-open-btn--animated::after {
    content: none;
}

.ld-shorts-open-btn--animated .ld-shorts-open-label {
    position: relative;
    z-index: 1;
}

.ld-shorts-open-btn--animated.ld-shorts-open-btn--preset-theme {
    --lds-launcher-fill: linear-gradient(135deg, var(--lds-launcher-theme-color, #3B82F6) 0%, #0f172a 100%);
}
.ld-shorts-open-btn--animated.ld-shorts-open-btn--preset-blue {
    --lds-launcher-fill: linear-gradient(135deg, #3B82F6 0%, #1E40AF 100%);
}
.ld-shorts-open-btn--animated.ld-shorts-open-btn--preset-green {
    --lds-launcher-fill: linear-gradient(135deg, #22C55E 0%, #166534 100%);
}
.ld-shorts-open-btn--animated.ld-shorts-open-btn--preset-orange {
    --lds-launcher-fill: linear-gradient(135deg, #FB923C 0%, #C2410C 100%);
}
.ld-shorts-open-btn--animated.ld-shorts-open-btn--preset-red {
    --lds-launcher-fill: linear-gradient(135deg, #EF4444 0%, #7F1D1D 100%);
}
.ld-shorts-open-btn--animated.ld-shorts-open-btn--preset-black {
    --lds-launcher-fill: linear-gradient(135deg, #374151 0%, #030712 100%);
}


/* ─── Close Button ────────────────────────────────────────── */

#close-shorts-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--lds-top-control-size);
    height: var(--lds-top-control-size);
    flex: 0 0 var(--lds-top-control-size);
    padding: 0;
    border-radius: 9999px;
    border: 1px solid var(--lds-border);
    background: var(--lds-surface);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    position: relative;
    color: var(--lds-text-muted);
    transition: color 0.2s ease;
    z-index: 81 !important;
    pointer-events: auto;
    cursor: pointer;
    margin-top: 0 !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    align-self: center;
    box-sizing: border-box;
}

#close-shorts-btn svg {
    display: block;
}

#close-shorts-btn:hover {
    color: var(--lds-text);
    border-color: var(--lds-border-hover);
}

/* ─── Global Progress Bar ─────────────────────────────────── */

#shorts-progress-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1 1 auto;
    min-width: 0;
    width: auto;
    pointer-events: none;
    padding: 0 !important;
}

.ld-shorts-progress-bar-wrap {
    display: grid;
    grid-template-columns: auto minmax(140px, 1fr) auto;
    align-items: center;
    gap: 10px;
    width: 100%;
    min-width: 0;
    max-width: 420px;
    background: var(--lds-surface);
    border: 1px solid var(--lds-border);
    border-radius: 9999px;
    padding: 0.45rem 0.65rem;
    min-height: var(--lds-top-control-size);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.ld-shorts-progress-label {
    color: var(--lds-text-muted);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
}

.ld-shorts-progress-track {
    height: 4px;
    width: 100%;
    border-radius: 9999px;
    background: var(--lds-progress-inactive);
    overflow: hidden;
}

.ld-shorts-progress-fill {
    display: block;
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: var(--lds-nav-accent);
    transition: width 220ms linear;
}

.ld-shorts-progress-counter {
    display: none;
}

/* ─── Stage Content ───────────────────────────────────────── */

#shorts-content-stage {
    color: var(--lds-text);
}

#shorts-content-stage h1,
#shorts-content-stage h2,
#shorts-content-stage h3 {
    color: var(--lds-text);
    font-family: inherit;
    letter-spacing: -0.01em;
    line-height: 1.15;
    margin: 0 0 0.65rem;
    text-wrap: balance;
}

#shorts-content-stage h1 {
    font-size: clamp(1.95rem, 5.2vw, 2.85rem);
    font-weight: 800;
}

#shorts-content-stage h2 {
    font-size: clamp(1.75rem, 4.6vw, 2.55rem);
    font-weight: 780;
}

#shorts-content-stage h3 {
    font-size: clamp(1.38rem, 3.8vw, 2rem);
    font-weight: 730;
}

#shorts-content-stage p {
    color: var(--lds-text-muted);
    font-size: clamp(1.03rem, 2.7vw, 1.18rem);
    line-height: 1.58;
    margin: 0 0 0.75rem;
}

#shorts-content-stage ul,
#shorts-content-stage ol {
    margin: 0.6rem 0 0.85rem;
    padding-left: 1.25rem;
    color: var(--lds-text-muted);
    line-height: 1.55;
}

.ld-shorts-text-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    border-radius: 14px;
    object-fit: contain;
    border: 1px solid var(--lds-border);
    background: var(--lds-surface);
    box-shadow: 0 10px 28px rgba(var(--lds-bg-rgb), 0.24);
}

.ld-shorts-text-image--small {
    width: 80px;
    height: 80px;
}

.ld-shorts-text-image--large {
    width: min(80vw, 960px);
    max-width: 80vw;
    height: auto;
    aspect-ratio: 16 / 9;
    border-radius: 16px;
    object-fit: contain;
    background: rgba(10, 22, 46, 0.28);
}

/* ─── Animations ──────────────────────────────────────────── */

.ld-shorts-fade-in {
    animation: ldShortsFadeIn 0.35s ease-out;
}

@keyframes ldShortsFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ld-shorts-bounce {
    animation: ldShortsBounce 0.6s ease;
}

@keyframes ldShortsBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-18px);
    }
}

.ld-shorts-nudge-forward {
    animation: ldShortsNudgeForward 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

.ld-shorts-nudge-back {
    animation: ldShortsNudgeBack 280ms cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes ldShortsNudgeForward {
    0% {
        transform: translateX(12px);
    }
    100% {
        transform: translateX(0);
    }
}

@keyframes ldShortsNudgeBack {
    0% {
        transform: translateX(-12px);
    }
    100% {
        transform: translateX(0);
    }
}

/* ─── Video Card ──────────────────────────────────────────── */

.ld-shorts-video-vertical {
    object-fit: cover;
}

.ld-shorts-video-horizontal {
    object-fit: contain;
}

.ld-shorts-video-gate-hint {
    position: absolute;
    top: calc(3rem + env(safe-area-inset-top));
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    text-align: center;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
    white-space: nowrap;
    color: var(--lds-text);
    background: var(--lds-surface-hover);
    border: 1px solid var(--lds-border);
    border-radius: 9999px;
    padding: 0.52rem 0.95rem;
    box-shadow: 0 6px 18px rgba(var(--lds-bg-rgb), 0.18);
}

.ld-shorts-video-embed {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.ld-shorts-video-frame {
    width: 100%;
    height: 100%;
    border: 0;
}

.ld-shorts-video-overlay {
    position: absolute;
    left: 0;
    width: 100%;
    bottom: 0;
    padding: 1.1rem 1.3rem 1rem;
    z-index: 10;
    background: linear-gradient(to top, var(--lds-gradient-from), transparent);
    pointer-events: none;
}

.ld-shorts-video-bottom-bar {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 20;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 0.95rem calc(0.9rem + env(safe-area-inset-bottom));
    background: linear-gradient(to top, var(--lds-gradient-from), transparent);
}

.ld-shorts-video-bottom-text {
    width: min(680px, 100%);
    text-align: center;
    color: var(--lds-text-muted);
    line-height: 1.55;
    pointer-events: none;
}

.ld-shorts-video-control-wrap {
    position: relative;
    display: flex;
    justify-content: center;
    width: 100%;
    z-index: 1;
    pointer-events: auto;
}

.ld-shorts-video-pause-hit {
    position: absolute;
    inset: 0;
    z-index: 12;
    border: 0;
    margin: 0;
    padding: 0;
    background: transparent !important;
    pointer-events: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
    outline: none !important;
}

.ld-shorts-video-pause-hit.is-active {
    pointer-events: auto;
}

.ld-shorts-video-control-btn {
    pointer-events: auto;
    min-width: 104px;
    padding: 0.65rem 1rem;
    border-radius: 9999px;
    border: 1px solid var(--lds-border);
    background: rgba(0, 0, 0, 0.58);
    color: #ffffff;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    opacity: 1;
    transition: opacity 0.22s ease, transform 0.18s ease;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.ld-shorts-video-control-btn.is-playing {
    opacity: 0.5;
}

.ld-shorts-video-control-btn.ld-shorts-video-control-hidden {
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
}

#shorts-content-stage.ld-shorts-has-video-bottom-bar .ld-shorts-video-advance-wrap {
    bottom: max(5.4rem, calc(env(safe-area-inset-bottom) + 5.4rem));
}

#shorts-player-modal[data-theme="light"] .ld-shorts-video-control-btn {
    background: rgba(15, 23, 42, 0.82);
}

.ld-shorts-video-control-btn:hover:not(:disabled) {
    opacity: 0.94;
    transform: translateY(-1px);
}

.ld-shorts-video-control-btn:disabled {
    opacity: 0.56;
    cursor: not-allowed;
}

/* ─── Quiz Options ────────────────────────────────────────── */

.ld-shorts-quiz-option {
    all: unset;
    box-sizing: border-box;
    display: block;
    width: 100%;
    padding: 1rem 1.25rem;
    background-color: var(--lds-surface);
    border: 2px solid var(--lds-border);
    border-radius: 0.8rem;
    color: var(--lds-text);
    font-size: 1rem;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
    position: relative;
    z-index: 50;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-appearance: none;
    appearance: none;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
}

.ld-shorts-quiz-option,
#shorts-player-modal .ld-shorts-quiz-option {
    background-color: var(--lds-panel, var(--lds-surface)) !important;
    border-color: var(--lds-panel-border, var(--lds-border)) !important;
    color: var(--lds-text) !important;
}

.ld-shorts-quiz-option:focus,
.ld-shorts-quiz-option:focus-visible {
    outline: none;
    box-shadow: none;
}

.ld-shorts-quiz-option:active:not(:disabled):not(.correct):not(.incorrect),
#shorts-player-modal .ld-shorts-quiz-option:hover:not(:disabled):not(.correct):not(.incorrect),
#shorts-player-modal .ld-shorts-quiz-option:focus:not(:disabled):not(.correct):not(.incorrect),
#shorts-player-modal .ld-shorts-quiz-option:focus-visible:not(:disabled):not(.correct):not(.incorrect) {
    background: var(--lds-panel, var(--lds-surface)) !important;
    border-color: var(--lds-panel-border, var(--lds-border)) !important;
    color: var(--lds-text) !important;
    transform: none !important;
    box-shadow: none !important;
    outline: none !important;
}

@media (hover: hover) and (pointer: fine) {
    .ld-shorts-quiz-option:hover:not(:disabled) {
        background-color: var(--lds-surface-hover);
        border-color: var(--lds-border-hover);
        transform: translateY(-1px);
    }
}

.ld-shorts-quiz-option.correct {
    background-color: var(--lds-correct-bg) !important;
    border-color: var(--lds-correct) !important;
    outline: 2px solid var(--lds-correct) !important;
    outline-offset: 1px;
    box-shadow: 0 0 0 1px rgba(34, 197, 94, 0.35) !important;
}

.ld-shorts-quiz-option.incorrect {
    background-color: var(--lds-incorrect-bg) !important;
    border-color: var(--lds-incorrect) !important;
    outline: 2px solid var(--lds-incorrect) !important;
    outline-offset: 1px;
    box-shadow: 0 0 0 1px rgba(239, 68, 68, 0.35) !important;
}

.ld-shorts-quiz-option:disabled {
    opacity: 0.72;
    cursor: default;
    transform: none;
}

/* ─── Quiz Feedback ───────────────────────────────────────── */

.ld-shorts-quiz-feedback {
    margin-top: 1.25rem;
    padding: 1rem 1.25rem;
    border-radius: 0.75rem;
    font-size: 0.95rem;
    line-height: 1.58;
    animation: ldShortsFadeIn 0.3s ease-out;
}

.ld-shorts-quiz-feedback.correct {
    background-color: var(--lds-correct-bg);
    border: 1px solid var(--lds-correct);
}

.ld-shorts-quiz-feedback.incorrect {
    background-color: var(--lds-incorrect-bg);
    border: 1px solid var(--lds-incorrect);
}

.ld-shorts-quiz-feedback-title {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.35rem;
}

.ld-shorts-quiz-feedback-title.correct {
    color: var(--lds-correct);
}

.ld-shorts-quiz-feedback-title.incorrect {
    color: var(--lds-incorrect);
}

.ld-shorts-quiz-feedback-text {
    color: var(--lds-text-muted);
}

.ld-shorts-quiz-actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.ld-shorts-quiz-actions button {
    padding: 0.62rem 1.4rem;
    border-radius: 9999px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s ease;
}

.ld-shorts-quiz-actions button:hover {
    opacity: 0.86;
}

.ld-shorts-quiz-btn-retry {
    background-color: var(--lds-surface-hover);
    color: var(--lds-text);
    border: 1px solid var(--lds-border) !important;
}

.ld-shorts-quiz-btn-continue {
    background-color: var(--lds-text);
    color: var(--lds-bg);
}

.ld-shorts-quiz-advance-link {
    background: transparent !important;
    border: none !important;
    padding: 0.15rem 0.35rem !important;
    color: var(--lds-text-muted);
    text-decoration: underline;
    text-underline-offset: 2px;
    font-weight: 700;
}

.ld-shorts-quiz-advance-link:hover {
    color: var(--lds-text);
    opacity: 1 !important;
}

/* ─── Completion Card ─────────────────────────────────────── */

.ld-shorts-completion-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: ldShortsBounce 0.6s ease;
}

.ld-shorts-completion-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--lds-correct);
    margin-bottom: 0.75rem;
}

.ld-shorts-complete-btn {
    display: block;
    width: 100%;
    max-width: 320px;
    margin: 1.5rem auto 0;
    padding: 1rem 2rem;
    border: none;
    border-radius: 9999px;
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
    position: relative;
    z-index: 50;
}

.ld-shorts-complete-btn:hover {
    opacity: 0.92;
    transform: translateY(-1px);
}

.ld-shorts-complete-btn:disabled {
    opacity: 0.62;
    cursor: wait;
}

.ld-shorts-close-link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    max-width: 320px;
    margin: 0.75rem auto 0;
    padding: 0.82rem 1.25rem;
    color: var(--lds-text);
    font-size: 0.92rem;
    font-weight: 700;
    cursor: pointer;
    background: var(--lds-surface);
    border: 1px solid var(--lds-border);
    border-radius: 9999px;
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease;
    position: relative;
    z-index: 50;
}

.ld-shorts-close-link:hover {
    background: var(--lds-surface-hover);
    border-color: var(--lds-border-hover);
}

.ld-shorts-success-msg {
    color: var(--lds-correct);
    font-weight: 700;
    font-size: 1.05rem;
    margin-top: 1rem;
    animation: ldShortsFadeIn 0.3s ease-out;
}

/* ─── LearnDash Native Mark Complete Gate ─────────────────── */

.ld-shorts-ld-complete-locked {
    opacity: 0.5 !important;
    filter: grayscale(0.15);
    cursor: not-allowed !important;
    pointer-events: none !important;
}

/* ─── Advance Button ─────────────────────────────────────── */

.ld-shorts-advance-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: min(360px, 100%);
    margin: 1.2rem auto 0;
    padding: 0.9rem 1.2rem;
    border: 1px solid var(--lds-border);
    border-radius: 12px;
    background: var(--lds-nav-accent);
    color: #ffffff;
    font-size: 0.96rem;
    font-weight: 700;
    cursor: pointer;
    transition: filter 0.2s ease, transform 0.15s ease;
    position: relative;
    z-index: 50;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 6px 18px rgba(var(--lds-bg-rgb), 0.25);
}

.ld-shorts-advance-btn:hover {
    filter: brightness(1.04);
    transform: translateY(-1px);
}

.ld-shorts-advance-btn:active {
    transform: scale(0.97);
}

.ld-shorts-video-advance-wrap {
    position: absolute;
    bottom: max(1.5rem, env(safe-area-inset-bottom));
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    z-index: 60;
    pointer-events: none;
}

.ld-shorts-video-advance-wrap .ld-shorts-advance-btn {
    pointer-events: auto;
    margin: 0 auto;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

#tap-zone-left,
#tap-zone-right {
    background: transparent;
    -webkit-tap-highlight-color: transparent;
}

.ld-shorts-desktop-arrow {
    appearance: none;
    -webkit-appearance: none;
    box-sizing: border-box;
    padding: 0 !important;
    margin: 0 !important;
    min-width: 44px !important;
    max-width: 44px !important;
    min-height: 44px !important;
    max-height: 44px !important;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 70;
    width: 44px !important;
    height: 44px !important;
    border-radius: 9999px;
    border: 1px solid var(--lds-nav-control-border);
    background: var(--lds-nav-control-bg);
    color: var(--lds-text);
    font-size: 30px;
    line-height: 1;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: transform 0.16s ease, opacity 0.16s ease;
}

.ld-shorts-desktop-arrow:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.04);
}

.ld-shorts-desktop-arrow:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ld-shorts-desktop-arrow--left {
    left: max(14px, env(safe-area-inset-left));
}

.ld-shorts-desktop-arrow--right {
    right: max(14px, env(safe-area-inset-right));
}

.ld-shorts-desktop-advance-wrap {
    position: absolute;
    left: 50%;
    bottom: max(14px, calc(env(safe-area-inset-bottom) + 14px));
    transform: translateX(-50%);
    z-index: 70;
    display: none;
    align-items: center;
    gap: 8px;
    width: min(480px, calc(100% - 24px));
    padding: 8px;
    border-radius: 9999px;
    border: 1px solid var(--lds-border);
    background: var(--lds-nav-control-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.ld-shorts-desktop-nav-btn {
    border: 1px solid var(--lds-border);
    border-radius: 9999px;
    padding: 0.68rem 1rem;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.16s ease, filter 0.16s ease, opacity 0.16s ease;
}

.ld-shorts-desktop-nav-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ld-shorts-desktop-nav-btn--back {
    flex: 0 0 auto;
    background: var(--lds-surface);
    color: var(--lds-text);
}

.ld-shorts-desktop-nav-btn--advance {
    flex: 1 1 auto;
    background: var(--lds-nav-accent);
    border-color: var(--lds-nav-accent);
    color: #ffffff;
}

.ld-shorts-desktop-nav-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    filter: brightness(1.03);
}

/* ─── Tap Zones ───────────────────────────────────────────── */

.ld-shorts-tap-disabled {
    pointer-events: none !important;
}

/* ─── Responsive ──────────────────────────────────────────── */

@media (max-width: 782px) {
    #shorts-player-modal {
        min-height: 100dvh;
        --lds-top-control-size: 2rem;
        --lds-top-control-gap: 0.42rem;
        --lds-top-control-width: min(420px, calc(100vw - 0.7rem));
    }

    #shorts-top-controls {
        width: var(--lds-top-control-width);
        gap: var(--lds-top-control-gap);
        padding: calc(0.35rem + env(safe-area-inset-top)) 0.35rem 0 !important;
    }

    #close-shorts-btn {
        width: var(--lds-top-control-size) !important;
        height: var(--lds-top-control-size) !important;
        flex-basis: var(--lds-top-control-size) !important;
    }

    .ld-shorts-progress-bar-wrap {
        width: 100%;
        max-width: none;
        gap: 4px;
        padding: 0.38rem 0.5rem;
    }

    .ld-shorts-progress-label {
        font-size: 9px;
    }

    .ld-shorts-progress-counter {
        font-size: 10px;
    }

    .ld-shorts-open-btn {
        max-width: none;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .ld-shorts-open-btn--small {
        min-height: 2.15rem;
        font-size: 0.84rem;
        padding: 0.46rem 0.82rem;
    }

    .ld-shorts-open-btn--medium {
        min-height: 2.55rem;
        font-size: 0.92rem;
        padding: 0.6rem 0.92rem;
    }

    .ld-shorts-open-btn--large {
        min-height: 3.05rem;
        font-size: 1.02rem;
        padding: 0.72rem 1.02rem;
    }

    .ld-shorts-open-label {
        white-space: normal;
    }

    #shorts-content-stage h1 {
        font-size: clamp(1.75rem, 8vw, 2.28rem);
    }

    #shorts-content-stage h2 {
        font-size: clamp(1.52rem, 7.1vw, 2.06rem);
    }

    #shorts-content-stage h3 {
        font-size: clamp(1.28rem, 6vw, 1.72rem);
    }

    #shorts-content-stage p {
        font-size: clamp(0.98rem, 4.2vw, 1.1rem);
        line-height: 1.54;
    }

    .ld-shorts-video-gate-hint {
        font-size: 11px;
        padding: 0.45rem 0.75rem;
        top: calc(2.7rem + env(safe-area-inset-top));
    }

    .ld-shorts-advance-btn {
        width: 100%;
        max-width: none;
    }

    #tap-zone-left,
    #tap-zone-right {
        width: 18vw !important;
        min-width: 44px !important;
        max-width: 72px !important;
    }

    /* Mobile performance profile: keep visual style, reduce expensive effects. */
    .ld-shorts-progress-bar-wrap,
    #close-shorts-btn,
    .ld-shorts-video-control-btn,
    .ld-shorts-video-advance-wrap .ld-shorts-advance-btn,
    .ld-shorts-desktop-advance-wrap {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .ld-shorts-text-image,
    .ld-shorts-advance-btn,
    .ld-shorts-complete-btn {
        box-shadow: none;
    }

    .ld-shorts-fade-in,
    .ld-shorts-bounce,
    .ld-shorts-nudge-forward,
    .ld-shorts-nudge-back {
        animation-duration: 0.2s;
    }
}

@media (min-width: 992px) {
    #shorts-player-modal.ld-shorts-desktop-explicit-nav #tap-zone-left,
    #shorts-player-modal.ld-shorts-desktop-explicit-nav #tap-zone-right {
        width: 0 !important;
        min-width: 0 !important;
        max-width: 0 !important;
    }

    #shorts-content-stage.ld-shorts-desktop-has-advance-nav {
        padding-bottom: 5.2rem !important;
    }

    #shorts-content-stage.ld-shorts-desktop-contained-video .ld-shorts-video-horizontal {
        position: relative !important;
        inset: auto !important;
        width: min(1000px, 92vw) !important;
        max-height: calc(100dvh - 220px) !important;
        height: auto !important;
        aspect-ratio: 16 / 9;
        margin: 0 auto;
        border-radius: 14px;
        box-shadow: 0 16px 42px rgba(var(--lds-bg-rgb), 0.32);
    }

    #shorts-content-stage.ld-shorts-desktop-contained-video .ld-shorts-video-vertical {
        position: relative !important;
        inset: auto !important;
        width: min(520px, 88vw) !important;
        max-height: calc(100dvh - 220px) !important;
        height: auto !important;
        aspect-ratio: 9 / 16;
        margin: 0 auto;
        border-radius: 14px;
        box-shadow: 0 16px 42px rgba(var(--lds-bg-rgb), 0.32);
    }

    #shorts-content-stage.ld-shorts-desktop-contained-video .ld-shorts-video-embed {
        position: relative !important;
        inset: auto !important;
        width: min(1000px, 92vw);
        height: min(calc(100dvh - 220px), 56.25vw);
        max-height: calc(100dvh - 220px);
        margin: 0 auto;
        border-radius: 14px;
        overflow: hidden;
        box-shadow: 0 16px 42px rgba(var(--lds-bg-rgb), 0.32);
    }
}

/* ─── Shorts UI Rebuild (Screenshot Match) ─────────────────── */

#shorts-player-modal {
    --lds-screen-top: #020814;
    --lds-screen-mid: #03122d;
    --lds-screen-bottom: #1c3561;
    --lds-screen-solid: #0a1d44;
    --lds-screen-glow-strong: rgba(46, 78, 132, 0.68);
    --lds-screen-glow-soft: rgba(18, 38, 72, 0.42);
    --lds-progress-track: rgba(210, 223, 238, 0.42);
    --lds-progress-complete: rgba(233, 240, 251, 0.95);
    --lds-progress-active: #f2862f;
    --lds-chrome-text: rgba(214, 224, 238, 0.92);
    --lds-chrome-muted: rgba(191, 204, 222, 0.82);
    --lds-chevron: rgba(196, 205, 220, 0.38);
    --lds-panel: rgba(5, 17, 38, 0.56);
    --lds-panel-border: rgba(166, 182, 205, 0.34);
    --lds-heading-font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
    --lds-body-font-family: "Avenir Next", Avenir, "Segoe UI", sans-serif;
    --lds-heading-color: rgba(244, 248, 255, 0.95);
    --lds-body-color: rgba(204, 218, 236, 0.88);
    --lds-heading-size-scale: 1;
    --lds-body-size-scale: 1;
    --lds-close-top: calc(env(safe-area-inset-top) + 56px);
    --lds-close-right: 20px;
    --lds-close-size: 35px;
    font-family: var(--lds-body-font-family, "Avenir Next", Avenir, "Segoe UI", sans-serif);
    background:
        radial-gradient(140% 80% at 50% 108%, var(--lds-screen-glow-strong) 0%, var(--lds-screen-glow-soft) 42%, rgba(4, 10, 22, 0) 72%),
        linear-gradient(180deg, var(--lds-screen-top) 0%, var(--lds-screen-mid) 46%, var(--lds-screen-bottom) 100%);
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    max-width: none !important;
    height: var(--ld-shorts-vh, 100dvh) !important;
    min-height: var(--ld-shorts-vh, 100dvh) !important;
    max-height: var(--ld-shorts-vh, 100dvh) !important;
    margin: 0 !important;
    overflow: hidden !important;
}

#shorts-player-modal[data-theme="light"] {
    --lds-screen-top: #f5f8ff;
    --lds-screen-mid: #e9eefc;
    --lds-screen-bottom: #d7e2f8;
    --lds-screen-solid: #ecf2ff;
    --lds-screen-glow-strong: rgba(153, 176, 214, 0.42);
    --lds-screen-glow-soft: rgba(187, 206, 236, 0.26);
    --lds-progress-track: rgba(90, 113, 146, 0.28);
    --lds-progress-complete: rgba(69, 93, 127, 0.74);
    --lds-progress-active: #db772d;
    --lds-chrome-text: rgba(34, 53, 81, 0.94);
    --lds-chrome-muted: rgba(54, 72, 99, 0.78);
    --lds-chevron: rgba(63, 84, 116, 0.32);
    --lds-panel: rgba(246, 249, 255, 0.72);
    --lds-panel-border: rgba(90, 109, 139, 0.22);
    --lds-heading-color: rgba(20, 35, 59, 0.95);
    --lds-body-color: rgba(45, 66, 97, 0.85);
}

#shorts-player-modal.ld-shorts-bg-solid {
    background: var(--lds-screen-solid) !important;
}

#shorts-top-controls {
    top: 0;
    left: 0;
    right: 0;
    transform: none;
    width: 100%;
    max-width: none;
    display: block;
    padding: calc(env(safe-area-inset-top) + 0.9rem) 1.25rem 0;
    pointer-events: none;
    box-sizing: border-box;
}

#shorts-progress-container {
    width: 100%;
    max-width: none;
    display: block;
    padding-right: 3.5rem;
    pointer-events: none;
}

.ld-shorts-progress-shell {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    width: 100%;
}

.ld-shorts-progress-segments {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
}

.ld-shorts-progress-segment {
    position: relative;
    flex: 1 1 auto;
    height: 3px;
    border-radius: 999px;
    background: var(--lds-progress-track);
    overflow: hidden;
}

.ld-shorts-progress-segment-fill {
    position: absolute;
    inset: 0 auto 0 0;
    width: 0%;
    height: 100%;
    background: transparent;
    transition: width 220ms linear;
}

.ld-shorts-progress-segment.is-complete .ld-shorts-progress-segment-fill {
    background: var(--lds-progress-complete);
}

.ld-shorts-progress-segment.is-active .ld-shorts-progress-segment-fill {
    background: var(--lds-progress-active);
}

.ld-shorts-progress-label {
    margin: 0;
    color: var(--lds-chrome-muted);
    font-size: clamp(1.05rem, 2.6vw, 2rem);
    font-weight: 500;
    letter-spacing: 0.06em;
    line-height: 1;
    text-transform: uppercase;
}

#close-shorts-btn {
    position: absolute;
    top: var(--lds-close-top);
    right: var(--lds-close-right);
    width: var(--lds-close-size);
    height: var(--lds-close-size);
    min-width: var(--lds-close-size);
    min-height: var(--lds-close-size);
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--lds-chrome-text);
    pointer-events: auto;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transition: color 0.2s ease, transform 0.2s ease;
}

#close-shorts-btn:hover {
    color: #ffffff;
    border: 0;
    transform: scale(1.04);
}

#shorts-player-modal[data-theme="light"] #close-shorts-btn:hover {
    color: rgba(20, 37, 61, 0.98);
}

#close-shorts-btn svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.75;
}

#shorts-content-stage {
    padding: calc(env(safe-area-inset-top) + 6.4rem) clamp(1rem, 4vw, 2.2rem) calc(env(safe-area-inset-bottom) + 2.4rem) !important;
    min-height: 0 !important;
    width: 100% !important;
}

#shorts-content-stage h1,
#shorts-content-stage h2,
#shorts-content-stage h3 {
    color: var(--lds-heading-color);
    font-family: var(--lds-heading-font-family);
}

#shorts-content-stage p,
#shorts-content-stage ul,
#shorts-content-stage ol,
#shorts-content-stage li {
    color: var(--lds-body-color);
    font-family: var(--lds-body-font-family);
}

#shorts-content-stage h1 {
    font-size: clamp(calc(1.95rem * var(--lds-heading-size-scale)), calc(5.2vw * var(--lds-heading-size-scale)), calc(2.85rem * var(--lds-heading-size-scale)));
}

#shorts-content-stage h2 {
    font-size: clamp(calc(1.75rem * var(--lds-heading-size-scale)), calc(4.6vw * var(--lds-heading-size-scale)), calc(2.55rem * var(--lds-heading-size-scale)));
}

#shorts-content-stage h3 {
    font-size: clamp(calc(1.38rem * var(--lds-heading-size-scale)), calc(3.8vw * var(--lds-heading-size-scale)), calc(2rem * var(--lds-heading-size-scale)));
}

#shorts-content-stage p,
#shorts-content-stage ul,
#shorts-content-stage ol,
#shorts-content-stage li {
    font-size: clamp(calc(1.03rem * var(--lds-body-size-scale)), calc(2.7vw * var(--lds-body-size-scale)), calc(1.18rem * var(--lds-body-size-scale)));
}

#shorts-content-stage .ld-shorts-quiz-question {
    color: var(--lds-heading-color);
    font-family: var(--lds-heading-font-family);
    font-size: clamp(calc(1.55rem * var(--lds-heading-size-scale)), calc(3.9vw * var(--lds-heading-size-scale)), calc(2.05rem * var(--lds-heading-size-scale)));
}

#shorts-content-stage .ld-shorts-quiz-option,
#shorts-content-stage .ld-shorts-quiz-feedback-text {
    font-family: var(--lds-body-font-family);
}

#shorts-player-modal .ld-shorts-quiz-option:not(.correct):not(.incorrect):not(:disabled) {
    background-color: var(--lds-panel, var(--lds-surface)) !important;
    border-color: var(--lds-panel-border, var(--lds-border)) !important;
    color: var(--lds-text) !important;
    -webkit-tap-highlight-color: transparent !important;
    outline: none !important;
    box-shadow: none !important;
}

#tap-zone-left,
#tap-zone-right {
    top: calc(env(safe-area-inset-top) + 4.8rem) !important;
    width: 18vw !important;
    max-width: 7rem !important;
    min-width: 3rem !important;
    display: flex;
    align-items: center;
    justify-content: center;
}

#tap-zone-left::before,
#tap-zone-right::before {
    content: "";
    width: 1.35rem;
    height: 1.35rem;
    border-top: 0.22rem solid var(--lds-chevron);
    border-right: 0.22rem solid var(--lds-chevron);
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
    opacity: 0.9;
}

#tap-zone-left::before {
    transform: rotate(-135deg);
}

#tap-zone-right::before {
    transform: rotate(45deg);
}

#tap-zone-left:hover::before,
#tap-zone-right:hover::before {
    border-color: rgba(229, 236, 247, 0.62);
}

#tap-zone-left.ld-shorts-tap-disabled::before,
#tap-zone-right.ld-shorts-tap-disabled::before {
    opacity: 0.2;
}

.ld-shorts-desktop-arrow {
    border: 0;
    background: transparent;
    width: 4rem !important;
    height: 4rem !important;
    min-width: 4rem !important;
    min-height: 4rem !important;
    max-width: 4rem !important;
    max-height: 4rem !important;
    border-radius: 0;
    color: var(--lds-chevron);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    transform: translateY(-50%);
    transition: color 0.2s ease, opacity 0.2s ease;
}

.ld-shorts-desktop-arrow svg {
    width: 2rem;
    height: 2rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.3;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.ld-shorts-desktop-arrow:hover:not(:disabled) {
    color: rgba(229, 236, 247, 0.68);
    transform: translateY(-50%);
}

.ld-shorts-desktop-arrow--left {
    left: max(0.5rem, env(safe-area-inset-left));
}

.ld-shorts-desktop-arrow--right {
    right: max(0.5rem, env(safe-area-inset-right));
}

.ld-shorts-desktop-arrow:disabled {
    opacity: 0.24;
}

.ld-shorts-desktop-advance-wrap {
    border: 1px solid var(--lds-panel-border);
    background: var(--lds-panel);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.ld-shorts-desktop-nav-btn,
.ld-shorts-advance-btn,
.ld-shorts-complete-btn,
.ld-shorts-close-link,
.ld-shorts-video-control-btn,
.ld-shorts-video-gate-hint,
.ld-shorts-quiz-option,
.ld-shorts-quiz-feedback {
    border-color: var(--lds-panel-border);
    background: var(--lds-panel);
}

.ld-shorts-advance-btn,
.ld-shorts-complete-btn,
.ld-shorts-close-link {
    border-radius: 14px;
}

.ld-shorts-quiz-option {
    border-radius: 12px;
}

.ld-shorts-video-overlay,
.ld-shorts-video-bottom-bar {
    background: linear-gradient(to top, rgba(3, 9, 21, 0.88), rgba(3, 9, 21, 0));
}

@media (max-width: 782px) {
    #shorts-top-controls {
        padding: calc(env(safe-area-inset-top) + 0.65rem) 0.8rem 0 !important;
    }

    #shorts-progress-container {
        padding-right: 3.2rem;
    }

    .ld-shorts-progress-shell {
        gap: 0.95rem;
    }

    .ld-shorts-progress-segments {
        gap: 0.35rem;
    }

    .ld-shorts-progress-segment {
        height: 2px;
    }

    .ld-shorts-progress-label {
        font-size: 1rem;
        letter-spacing: 0.06em;
    }

    #close-shorts-btn {
        --lds-close-top: calc(env(safe-area-inset-top) + 24px);
        --lds-close-right: 13px;
        --lds-close-size: 31px;
        width: var(--lds-close-size) !important;
        height: var(--lds-close-size) !important;
        min-width: var(--lds-close-size) !important;
        min-height: var(--lds-close-size) !important;
    }

    #tap-zone-left,
    #tap-zone-right {
        top: calc(env(safe-area-inset-top) + 4.2rem) !important;
        width: 20vw !important;
        max-width: 4.6rem !important;
        min-width: 2.6rem !important;
    }

    #tap-zone-left::before,
    #tap-zone-right::before {
        width: 1rem;
        height: 1rem;
        border-top-width: 0.16rem;
        border-right-width: 0.16rem;
    }

    #shorts-content-stage {
        padding-top: calc(env(safe-area-inset-top) + 5.6rem) !important;
        padding-left: 1rem !important;
        padding-right: 1rem !important;
    }
}

@media (min-width: 992px) {
    #shorts-top-controls {
        padding: calc(env(safe-area-inset-top) + 1.1rem) 2.6rem 0;
    }

    #shorts-progress-container {
        padding-right: 5.4rem;
    }

    .ld-shorts-progress-shell {
        gap: 1.45rem;
    }

    #close-shorts-btn {
        --lds-close-top: calc(env(safe-area-inset-top) + 54px);
        --lds-close-right: 37px;
        --lds-close-size: 38px;
        width: var(--lds-close-size);
        height: var(--lds-close-size);
        min-width: var(--lds-close-size);
        min-height: var(--lds-close-size);
    }

    #tap-zone-left,
    #tap-zone-right {
        top: calc(env(safe-area-inset-top) + 5.3rem) !important;
        width: 8rem !important;
        max-width: 8rem !important;
    }
}

@media (max-width: 991px) {
    #shorts-player-modal.ld-shorts-mobile-arrows-off #tap-zone-left::before,
    #shorts-player-modal.ld-shorts-mobile-arrows-off #tap-zone-right::before {
        display: none !important;
    }
}

html.ld-shorts-lock,
body.ld-shorts-modal-open {
    height: 100%;
    overflow: hidden !important;
    overscroll-behavior: none;
}