/* UI Layer Visibility Styles */

/* App container with 3D perspective */
.app-container {
    perspective: 1200px;
    transform-style: preserve-3d;
}

/* UI Layer - Fade and 3D zoom transitions */
.ui-layer {
    transition: opacity 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform-style: preserve-3d;
    transform: scale3d(1, 1, 1) translateZ(0);
}

/* Hide UI layer on mouse inactivity - zoom out content, zoom in UI with 3D depth */
.ui-hidden .ui-layer {
    opacity: 0;
    pointer-events: none;
    transform: scale3d(1.12, 1.12, 1) translateZ(80px);
}

.ui-hidden .sidebar {
    opacity: 0;
    pointer-events: none;
}

/* Main content zooms back with 3D depth when UI is hidden */
.ui-hidden .main-content {
    transform: scale3d(0.88, 0.88, 1) translateZ(-80px);
}

/* Hide pagination controls with UI layer */
.horizontal-slider-controls {
    transition: opacity 0.3s ease;
}

.horizontal-slider-controls.hidden {
    opacity: 0 !important;
    pointer-events: none !important;
}

/* Tutorial Styles */
.tutorial-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 1;
}

.tutorial-content {
    max-width: 700px;
    width: 90%;
    padding: 60px;
    background: linear-gradient(135deg, rgba(20, 20, 30, 0.9) 0%, rgba(30, 30, 45, 0.9) 100%);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    position: relative;
}

.tutorial-step {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tutorial-step-content {
    text-align: center;
}

.tutorial-icon {
    font-size: 80px;
    color: var(--color-primary);
    margin-bottom: 32px;
    opacity: 0.9;
}

.tutorial-icon i {
    display: inline-block;
}

.tutorial-title {
    font-size: 42px;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: #ffffff;
}

.tutorial-description {
    font-size: 20px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.tutorial-hint {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.tutorial-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
}

.tutorial-btn {
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tutorial-skip {
    background: transparent;
    color: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tutorial-skip:hover {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.9);
}

.tutorial-next {
    background: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
}

.tutorial-next:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.6);
}

.tutorial-progress {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 32px;
}

.tutorial-dot {
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.tutorial-dot.active {
    width: 24px;
    border-radius: 4px;
    background: var(--color-primary);
}

/* Mobile Tutorial */
@media (max-width: 768px) {
    .tutorial-content {
        padding: 40px 32px;
    }

    .tutorial-icon {
        font-size: 60px;
    }

    .tutorial-title {
        font-size: 32px;
    }

    .tutorial-description {
        font-size: 18px;
    }

    .tutorial-nav {
        flex-direction: column-reverse;
        gap: 12px;
    }

    .tutorial-btn {
        width: 100%;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .fullscreen-mode .sidebar {
        transition: none;
    }

    .tutorial-overlay * {
        animation: none !important;
        transition: none !important;
    }
}