/* DearFlip Frontend Grid Styling */

.dearflip-grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 30px;
    padding: 20px 0;
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .dearflip-grid-container.cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    .dearflip-grid-container.cols-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    .dearflip-grid-container.cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

.epaper-card-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-sizing: border-box;
    width: 100%;
}

/* 3D Realistic Book Cover Mockup */
.ead-card-mockup {
    position: relative;
    display: block;
    cursor: pointer;
    background: #f8fafc;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: inherit;
    text-decoration: none;
    aspect-ratio: 3 / 4;
    width: 100%;
    max-width: 240px;
    padding: 0;
    border: none;
    margin-bottom: 12px;
}

.ead-card-mockup:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
}

.ead-card-mockup .ead-card-cover {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover; /* Covers the 3:4 aspect ratio nicely without squishing */
    display: block;
    transform: perspective(900px) rotateY(-12deg);
    transition: transform 0.4s ease;
}

.ead-card-mockup:hover .ead-card-cover {
    transform: perspective(900px) rotateY(-8deg) scale(1.04);
}

.ead-card-mockup .ead-card-title-overlay {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 20px 12px 12px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 100%);
    color: #ffffff;
    font-weight: 600;
    font-size: 15px;
    text-align: left;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.ead-card-mockup .ead-card-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, transform 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0; /* Hidden by default, fades in on hover */
}

.ead-card-mockup:hover .ead-card-play {
    background: rgba(59, 130, 246, 0.9);
    transform: translate(-50%, -50%) scale(1.08);
    opacity: 1;
}

.ead-card-mockup .ead-card-play::before {
    content: "";
    display: block;
    width: 0;
    height: 0;
    margin-left: 4px;
    border-left: 18px solid #ffffff;
    border-top: 11px solid transparent;
    border-bottom: 11px solid transparent;
}

.dearflip-grid-date {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 18px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ==========================================================================
   Responsive ePaper Toolbars & Accessibility (a11y) Style Overrides
   ========================================================================== */

/* High-DPI enhancements */
.df-device-hidpi canvas {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Focus outlines for better keyboard navigation */
.df-container .df-ui-btn:focus-visible {
    outline: 2px solid #2271b1 !important;
    outline-offset: -2px;
    box-shadow: 0 0 0 2px #fff !important;
}

/* Touch device specific adjustments */
.df-device-touch .df-ui-btn {
    min-width: 44px;
    min-height: 44px;
}

/* Tablet viewports (900px and under) */
@media screen and (max-width: 900px) {
    .df-container .df-ui-sound,
    .df-container .df-ui-share {
        display: none !important; /* Hide share & sound to clear space */
    }
    
    .df-container .df-ui-btn {
        width: 42px;
        height: 44px;
        padding: 12px 6px;
    }
}

/* Mobile viewports (600px and under) */
@media screen and (max-width: 600px) {
    .df-container .df-ui-sound,
    .df-container .df-ui-share,
    .df-container .df-ui-thumbnail,
    .df-container .df-ui-outline,
    .df-container .df-ui-page {
        display: none !important; /* Hide non-essential layout controls */
    }
    
    .df-container .df-ui-controls {
        height: 48px;
    }
    
    .df-container .df-ui-btn {
        width: 48px; /* Comfortable 48px touch targets */
        height: 48px;
        padding: 15px 8px;
    }

    .df-container .df-book-stage {
        padding: 5px 5px 55px !important; /* Minimal spacing on mobile viewports */
    }
}

/* General stage padding overrides for desktop/tablet to reduce white space margins */
.df-container .df-book-stage {
    padding: 15px 15px 65px !important; /* Maximize book surface area */
}

/* Floating Zoom Percentage Badge */
.df-container {
    position: relative;
}