/**
 * Rehan Post Waal - Frontend Styles
 * The Living Wall of Stories
 */

/* ===========================
   Base Container & Layout
   =========================== */

.rpw-wall-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
    position: relative;
}

.rpw-wall-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
    perspective: 2000px;
}

/* ===========================
   Paper Note Styling
   =========================== */

.rpw-paper-wrapper {
    position: relative;
    min-height: 400px;
    perspective: 1800px;
    transform-style: preserve-3d;
}

.rpw-paper {
    position: relative;
    width: 100%;
    min-height: 400px;
    background: #fffdf8;
    border-radius: 8px;
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.08),
        0 8px 20px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    cursor: pointer;
    overflow: hidden;
    backface-visibility: hidden;
}

/* Paper texture overlay */
.rpw-paper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0, 0, 0, 0.01) 2px,
            rgba(0, 0, 0, 0.01) 4px
        );
    pointer-events: none;
    z-index: 1;
}

/* Hover effects */
.rpw-paper:hover {
    transform: translateY(-8px) rotateX(2deg);
    box-shadow: 
        0 12px 24px rgba(0, 0, 0, 0.12),
        0 16px 40px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.rpw-paper:hover .rpw-paper-corner {
    transform: translate(0, 0) rotate(0deg);
    opacity: 1;
}

/* ===========================
   Paper Corner Curl Effect
   =========================== */

.rpw-paper-corner {
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.1) 40%,
        rgba(200, 200, 200, 0.3) 100%
    );
    border-radius: 0 8px 0 100%;
    transform: translate(40px, -40px) rotate(45deg);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 10;
    box-shadow: -2px 2px 8px rgba(0, 0, 0, 0.15);
}

/* ===========================
   Paper Content
   =========================== */

.rpw-paper-front {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.rpw-paper-content {
    padding: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* ===========================
   Featured Image Styling
   =========================== */

.rpw-paper-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 8px 8px 0 0;
}

.rpw-paper-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.rpw-paper:hover .rpw-paper-image img {
    transform: scale(1.08);
}

/* Image overlay for paper effect */
.rpw-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(255, 253, 248, 0) 0%,
        rgba(255, 253, 248, 0.3) 100%
    );
    pointer-events: none;
}

/* Black & White Fade Effect */
.rpw-image-bw-fade .rpw-paper-image img {
    filter: grayscale(70%) contrast(1.1);
    opacity: 0.85;
}

.rpw-image-bw-fade .rpw-paper:hover .rpw-paper-image img {
    filter: grayscale(40%) contrast(1.05);
    opacity: 0.95;
}

/* Sepia Effect */
.rpw-image-sepia .rpw-paper-image img {
    filter: sepia(60%) contrast(1.1);
}

.rpw-image-sepia .rpw-paper:hover .rpw-paper-image img {
    filter: sepia(40%) contrast(1.05);
}

/* Vintage Effect */
.rpw-image-vintage .rpw-paper-image img {
    filter: sepia(40%) saturate(0.8) contrast(1.15) brightness(0.95);
}

.rpw-image-vintage .rpw-paper:hover .rpw-paper-image img {
    filter: sepia(30%) saturate(0.9) contrast(1.1) brightness(1);
}

/* ===========================
   Text Content
   =========================== */

.rpw-paper-text {
    padding: 30px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.rpw-paper-title {
    margin: 0 0 15px 0;
    font-size: 1.5rem;
    line-height: 1.4;
    font-family: 'Georgia', serif;
    color: #3c3a34;
    font-weight: 600;
}

.rpw-paper-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.rpw-paper-title a:hover {
    color: #c4a574;
}

.rpw-paper-date {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #a09380;
    margin-bottom: 15px;
    font-family: 'Georgia', serif;
}

.rpw-paper-date .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

.rpw-paper-excerpt {
    flex: 1;
    line-height: 1.7;
    color: #5a5445;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.rpw-paper-footer {
    margin-top: auto;
}

.rpw-read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #c4a574 0%, #b89968 100%);
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(196, 165, 116, 0.3);
}

.rpw-read-more:hover {
    background: linear-gradient(135deg, #b89968 0%, #a88858 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(196, 165, 116, 0.4);
    color: #fff;
}

.rpw-arrow {
    transition: transform 0.3s ease;
}

.rpw-read-more:hover .rpw-arrow {
    transform: translateX(4px);
}

/* ===========================
   Load More Button
   =========================== */

.rpw-load-more-container {
    text-align: center;
    margin-top: 40px;
}

.rpw-load-more-btn {
    padding: 15px 40px;
    background: linear-gradient(135deg, #c4a574 0%, #b89968 100%);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(196, 165, 116, 0.3);
    position: relative;
    overflow: hidden;
}

.rpw-load-more-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.rpw-load-more-btn:hover::before {
    width: 300px;
    height: 300px;
}

.rpw-load-more-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(196, 165, 116, 0.4);
}

.rpw-load-more-btn:active {
    transform: translateY(-1px);
}

.rpw-load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Loading spinner */
.rpw-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: rpw-spin 0.8s linear infinite;
    margin-right: 8px;
}

@keyframes rpw-spin {
    to { transform: rotate(360deg); }
}

/* ===========================
   Shuffle Button
   =========================== */

.rpw-controls {
    text-align: center;
    margin-bottom: 30px;
}

.rpw-shuffle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: #fff;
    color: #3c3a34;
    border: 2px solid #c4a574;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.rpw-shuffle-btn:hover {
    background: #c4a574;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(196, 165, 116, 0.3);
}

.rpw-shuffle-btn .dashicons {
    font-size: 18px;
    width: 18px;
    height: 18px;
}

/* ===========================
   Animation Speed Variants
   =========================== */

.rpw-speed-slow .rpw-paper {
    transition-duration: 0.8s;
}

.rpw-speed-normal .rpw-paper {
    transition-duration: 0.4s;
}

.rpw-speed-fast .rpw-paper {
    transition-duration: 0.2s;
}

/* ===========================
   RTL Support
   =========================== */

.rpw-rtl {
    direction: rtl;
}

.rpw-rtl .rpw-paper-corner {
    right: auto;
    left: 0;
    border-radius: 8px 0 100% 0;
    transform: translate(-40px, -40px) rotate(-45deg);
}

.rpw-rtl .rpw-paper:hover .rpw-paper-corner {
    transform: translate(0, 0) rotate(0deg);
}

.rpw-rtl .rpw-arrow {
    transform: scaleX(-1);
}

.rpw-rtl .rpw-read-more:hover .rpw-arrow {
    transform: scaleX(-1) translateX(4px);
}

/* ===========================
   No Posts Message
   =========================== */

.rpw-no-posts {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #a09380;
    font-size: 1.1rem;
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 768px) {
    .rpw-wall-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .rpw-paper-title {
        font-size: 1.3rem;
    }
    
    .rpw-paper-text {
        padding: 20px;
    }
    
    .rpw-paper-image {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .rpw-wall-container {
        padding: 20px 10px;
    }
    
    .rpw-paper-title {
        font-size: 1.2rem;
    }
    
    .rpw-paper-excerpt {
        font-size: 0.9rem;
    }
    
    .rpw-load-more-btn {
        padding: 12px 30px;
        font-size: 0.95rem;
    }
}

/* ===========================
   Accessibility
   =========================== */

@media (prefers-reduced-motion: reduce) {
    .rpw-paper,
    .rpw-paper-corner,
    .rpw-paper-image img,
    .rpw-read-more,
    .rpw-load-more-btn {
        transition: none !important;
        animation: none !important;
    }
}

/* Focus styles for keyboard navigation */
.rpw-paper:focus-within {
    outline: 3px solid #c4a574;
    outline-offset: 4px;
}

.rpw-read-more:focus,
.rpw-load-more-btn:focus,
.rpw-shuffle-btn:focus {
    outline: 3px solid #c4a574;
    outline-offset: 2px;
}

/* ===========================
   Daylight Mode
   =========================== */

.rpw-wall-container.rpw-daylight-morning {
    filter: sepia(0.1) saturate(1.1) brightness(1.05);
}

.rpw-wall-container.rpw-daylight-evening {
    filter: sepia(0.15) saturate(0.9) brightness(0.95) hue-rotate(-10deg);
}

.rpw-wall-container.rpw-daylight-night {
    filter: brightness(0.85) contrast(1.1);
}

/* ===========================
   Loading Animation
   =========================== */

.rpw-paper-wrapper.rpw-loading {
    animation: rpw-fade-in 0.6s ease-out;
}

@keyframes rpw-fade-in {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   Print Styles
   =========================== */

@media print {
    .rpw-load-more-container,
    .rpw-controls,
    .rpw-paper-corner {
        display: none !important;
    }
    
    .rpw-paper {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}