/* Real 3D Box Design */

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Modal Box Container */
.modal-box {
    position: relative;
    max-width: 800px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    background: linear-gradient(135deg, #111, #000 80%);
    border: 4px solid #fff;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 
        0 30px 80px rgba(0, 0, 0, 0.95),
        0 0 80px 20px rgba(0, 0, 0, 0.3),
        0 0 60px 10px rgba(255, 255, 255, 0.2);
    transform: scale(0.2);
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.opening .modal-box {
    animation: dramaticModalOpen 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.modal-overlay.active .modal-box {
    transform: scale(1);
    opacity: 1;
}

@keyframes dramaticModalOpen {
    0% {
        transform: scale(0.2);
        opacity: 0;
    }
    60% {
        transform: scale(1.15);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Close Button */
.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: #ffffff;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.modal-close:hover {
    background: rgba(255, 59, 48, 0.8);
    border-color: #ff3b30;
    transform: rotate(90deg);
}

.artifact-collection {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 100px 50px;
    padding: 60px 30px 100px;
    max-width: 1500px;
    margin: 0 auto;
    justify-items: center;
}

.read-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    perspective: 1500px;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 350px;
    margin-bottom: 20px;
}

.read-section.hidden {
    display: none;
}

/* 3D Box Container */
.box-3d {
    width: 100%;
    max-width: 350px;
    height: 300px;
    position: relative;
    cursor: pointer;
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

/* 3D Scene Container */
.box-scene {
    width: 100%;
    height: 300px;
    position: absolute;
    top: 0;
    left: 0;
    transform-style: preserve-3d;
    transition: all 0.5s ease;
}

/* 3D Cube */
.box-cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(-15deg) rotateY(15deg);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
}

/* Box Faces */
.box-face {
    position: absolute;
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #b0b0b0, #808080);
    border: 2px solid #5a5a5a;
    opacity: 1;
    backface-visibility: hidden;
}

.box-front {
    transform: rotateY(0deg) translateZ(150px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #c5c5c5, #909090);
}

.box-back {
    transform: rotateY(180deg) translateZ(150px);
}

.box-right {
    transform: rotateY(90deg) translateZ(150px);
}

.box-left {
    transform: rotateY(-90deg) translateZ(150px);
}

.box-top {
    transform: rotateX(90deg) translateZ(150px);
    background: linear-gradient(145deg, #c5c5c5, #909090);
}

.box-bottom {
    transform: rotateX(-90deg) translateZ(150px);
    background: linear-gradient(145deg, #707070, #505050);
}

/* Rarity badge on box front */
.box-front .rarity-badge {
    padding: 10px 24px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    text-align: center;
    line-height: 1.3;
}

.box-3d[data-rarity="legendary"] .box-front .rarity-badge {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
}

.box-3d[data-rarity="epic"] .box-front .rarity-badge {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #ffffff;
}

.box-3d[data-rarity="rare"] .box-front .rarity-badge {
    background: linear-gradient(135deg, #a855f7, #9333ea);
    color: #ffffff;
}

.box-3d[data-rarity="common"] .box-front .rarity-badge {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #ffffff;
}

/* Box Content - Inside Modal */
.modal-box .box-content {
    position: relative;
    width: 100%;
    opacity: 1;
    pointer-events: auto;
    padding: 0;
    z-index: 1;
    transform-style: flat;
    box-sizing: border-box;
}


/* Hover effect on box */
.box-3d:hover .box-cube {
    transform: rotateX(-10deg) rotateY(20deg) scale(1.05);
}

/* Content Styling */
.box-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    line-height: 1.3;
}

.box-content .rarity-badge {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 20px;
}

.box-3d[data-rarity="legendary"] .box-content .rarity-badge {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
    box-shadow: 0 6px 20px rgba(251, 191, 36, 0.6);
}

.box-3d[data-rarity="epic"] .box-content .rarity-badge {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.6);
}

.box-3d[data-rarity="rare"] .box-content .rarity-badge {
    background: linear-gradient(135deg, #a855f7, #9333ea);
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.6);
}

.box-3d[data-rarity="common"] .box-content .rarity-badge {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #ffffff;
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.6);
}

.artifact-icon {
    font-size: 4rem;
    text-align: center;
    margin: 20px 0;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.5));
}

.artifact-description {
    color: #d1d5db;
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 20px 0;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.tech-tag {
    background: rgba(125, 211, 252, 0.15);
    border: 1px solid rgba(125, 211, 252, 0.4);
    color: #7dd3fc;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.tech-tag:hover {
    background: rgba(125, 211, 252, 0.25);
    border-color: #7dd3fc;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(125, 211, 252, 0.4);
}

.artifact-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 20px 0;
}

.stat {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #10b981;
    padding: 10px 18px;
    border-radius: 15px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat:hover {
    background: rgba(16, 185, 129, 0.25);
    border-color: #10b981;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

.artifact-link {
    display: inline-block;
    margin-top: 20px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #7dd3fc, #38bdf8);
    color: #1a1a2e;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px rgba(125, 211, 252, 0.4);
}

.artifact-link:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(125, 211, 252, 0.6);
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
}

/* XP Indicator */
.xp-indicator {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
    padding: 12px 32px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 
        0 10px 40px rgba(251, 191, 36, 0.6),
        0 0 60px rgba(251, 191, 36, 0.4);
    z-index: 5;
    transition: all 0.4s ease;
}

.read-section.viewed .xp-indicator {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: #9ca3af;
    box-shadow: 0 10px 30px rgba(107, 114, 128, 0.4);
}

/* Entrance animations */
.read-section {
    animation: boxAppear 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.read-section:nth-child(1) { animation-delay: 0.1s; }
.read-section:nth-child(2) { animation-delay: 0.2s; }
.read-section:nth-child(3) { animation-delay: 0.3s; }
.read-section:nth-child(4) { animation-delay: 0.4s; }

@keyframes boxAppear {
    0% {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .artifact-collection {
        grid-template-columns: 1fr;
        gap: 80px 20px;
        padding: 30px 20px 80px;
    }
    
    .read-section {
        min-height: auto;
        height: auto;
        margin-bottom: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding: 20px 0;
        position: relative;
    }
    
    .box-3d {
        width: 100%;
        max-width: 170px;
        height: 150px;
        margin: 0 auto;
        perspective: 1500px;
        overflow: visible;
    }
    
    .box-scene {
        width: 100%;
        height: 100%;
        perspective: 1500px;
        overflow: visible;
    }
    
    .box-cube {
        transform: rotateX(-15deg) rotateY(15deg);
        transform-origin: center center;
    }
    
    .box-front {
        transform: rotateY(0deg) translateZ(85px);
    }
    
    .box-back {
        transform: rotateY(180deg) translateZ(85px);
    }
    
    .box-right {
        transform: rotateY(90deg) translateZ(85px);
    }
    
    .box-left {
        transform: rotateY(-90deg) translateZ(85px);
    }
    
    .box-top {
        transform: rotateX(90deg) translateZ(75px);
    }
    
    .box-bottom {
        transform: rotateX(-90deg) translateZ(85px);
    }
    
    .box-3d.open {
        min-height: 500px;
    }
    
    .box-content {
        padding: 15px;
    }
    
    .box-content h3 {
        font-size: 1.2rem;
    }
    
    .box-front .rarity-badge {
        font-size: 0.7rem;
        padding: 8px 12px;
        max-width: 90%;
        text-align: center;
        line-height: 1.2;
    }
    
    .xp-indicator {
        position: relative;
        bottom: auto;
        margin-top: -25px;
        padding: 5px 10px;
        font-size: 0.75rem;
    }
    
    .artifact-icon {
        font-size: 1.8rem;
    }
}

/* Read section wrapper for XP tracking */
.read-section {
    position: relative;
    transform-style: preserve-3d;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* 3D Box Container */
.artifact-card {
    position: relative;
    width: 100%;
    max-width: 350px;
    height: 350px;
    transform-style: preserve-3d;
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Box Frame/Border */
.artifact-card .artifact-header,
.artifact-card .artifact-content {
    display: none;
}

.artifact-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(145deg, #0a0a0a 0%, #1a1a1a 100%);
    border: 2px solid #333;
    border-radius: 8px;
    z-index: 1;
}

/* The actual 3D box shape - trapezoid */
.artifact-card .rarity-badge {
    position: absolute;
    width: 280px;
    height: 180px;
    background: linear-gradient(180deg, #c0c0c0 0%, #a0a0a0 30%, #808080 70%, #606060 100%);
    clip-path: polygon(15% 0%, 85% 0%, 100% 100%, 0% 100%);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 30px;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.5),
        inset 0 -3px 15px rgba(0, 0, 0, 0.3),
        inset 0 3px 15px rgba(255, 255, 255, 0.2);
    transition: all 0.8s cubic-bezier(0.23, 1, 0.32, 1);
    z-index: 2;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: #fff;
    border-radius: 0;
}

/* Rarity specific colors for badges */
.artifact-card.rarity-legendary .rarity-badge {
    background: linear-gradient(180deg, #c0c0c0 0%, #a0a0a0 30%, #808080 70%, #606060 100%);
}

.artifact-card.rarity-legendary .rarity-badge::after {
    content: 'LEGENDARY';
    display: block;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.6);
}

.artifact-card.rarity-epic .rarity-badge::after {
    content: 'EPIC';
    display: block;
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #ffffff;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.6);
}

.artifact-card.rarity-rare .rarity-badge::after {
    content: 'RARE';
    display: block;
    background: linear-gradient(135deg, #a855f7, #9333ea);
    color: #ffffff;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.6);
}

.artifact-card.rarity-common .rarity-badge::after {
    content: 'COMMON';
    display: block;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #ffffff;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.6);
}

/* Hover effect for closed box */
.artifact-card:not(.open):hover {
    transform: translateY(-10px) scale(1.02);
}

.artifact-card:not(.open):hover .rarity-badge {
    box-shadow: 
        0 25px 60px rgba(0, 0, 0, 0.6),
        inset 0 -3px 15px rgba(0, 0, 0, 0.4),
        inset 0 3px 15px rgba(255, 255, 255, 0.3);
}

/* OPEN STATE */
.artifact-card.open {
    height: auto;
    min-height: 600px;
    cursor: default;
}

.artifact-card.open::before {
    background: linear-gradient(145deg, #1a1a2e 0%, #0f1419 100%);
    border: 2px solid rgba(125, 211, 252, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
}

.artifact-card.open .rarity-badge {
    width: 280px;
    height: 80px;
    clip-path: polygon(15% 0%, 85% 0%, 95% 100%, 5% 100%);
    background: linear-gradient(180deg, rgba(192, 192, 192, 0.3) 0%, rgba(160, 160, 160, 0.2) 100%);
    transform: translateY(-300px) rotateX(-70deg);
    opacity: 0.5;
    padding-top: 15px;
}

.artifact-card.open .artifact-header,
.artifact-card.open .artifact-content {
    display: block;
    animation: contentReveal 0.6s ease-out 0.3s backwards;
    position: relative;
    z-index: 3;
    padding: 30px;
    width: 100%;
}

.artifact-card.open .artifact-header {
    padding-bottom: 10px;
}

@keyframes contentReveal {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Open box badge - show at top */
.artifact-card.open .artifact-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    line-height: 1.3;
}

/* Icon */
.artifact-icon {
    font-size: 4rem;
    text-align: center;
    margin: 20px 0;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.5));
}

/* Description */
.artifact-description {
    color: #d1d5db;
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 20px 0;
}

/* Tech stack */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.tech-tag {
    background: rgba(125, 211, 252, 0.15);
    border: 1px solid rgba(125, 211, 252, 0.4);
    color: #7dd3fc;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.tech-tag:hover {
    background: rgba(125, 211, 252, 0.25);
    border-color: #7dd3fc;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(125, 211, 252, 0.4);
}

/* Stats */
.artifact-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 20px 0;
}

.stat {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #10b981;
    padding: 10px 18px;
    border-radius: 15px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat:hover {
    background: rgba(16, 185, 129, 0.25);
    border-color: #10b981;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

/* Artifact link */
.artifact-link {
    display: inline-block;
    margin-top: 20px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #7dd3fc, #38bdf8);
    color: #1a1a2e;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px rgba(125, 211, 252, 0.4);
}

.artifact-link:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(125, 211, 252, 0.6);
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
}

/* XP Indicator - positioned below box with glow */
.xp-indicator {
    position: absolute;
    bottom: -70px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
    padding: 12px 32px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 
        0 10px 40px rgba(251, 191, 36, 0.6),
        0 0 60px rgba(251, 191, 36, 0.4);
    z-index: 10;
    transition: all 0.4s ease;
}

.read-section.viewed .xp-indicator {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: #9ca3af;
    box-shadow: 0 10px 30px rgba(107, 114, 128, 0.4);
}

/* Entrance animations */
.read-section {
    animation: boxAppear 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.read-section:nth-child(1) { animation-delay: 0.1s; }
.read-section:nth-child(2) { animation-delay: 0.2s; }
.read-section:nth-child(3) { animation-delay: 0.3s; }
.read-section:nth-child(4) { animation-delay: 0.4s; }

@keyframes boxAppear {
    0% {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .artifact-collection {
        grid-template-columns: 1fr;
        gap: 100px 30px;
        padding: 40px 20px 100px;
    }
    
    .artifact-card {
        max-width: 100%;
        height: 300px;
    }
    
    .artifact-card .rarity-badge {
        width: 90%;
        max-width: 280px;
    }
    
    .artifact-card.open {
        min-height: 550px;
    }
    
    .artifact-card.open .artifact-header,
    .artifact-card.open .artifact-content {
        padding: 20px;
    }
    
    .artifact-icon {
        font-size: 3rem;
    }
    
    .artifact-card.open .artifact-header h3 {
        font-size: 1.3rem;
    }
    
    .xp-indicator {
        bottom: -60px;
        padding: 10px 24px;
        font-size: 0.9rem;
    }
}

/* Intro section styling */
.vault-intro {
    text-align: center;
    padding: 40px 20px 30px;
    margin-bottom: 20px;
}

.vault-intro h2 {
    font-size: 2.5rem;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(125, 211, 252, 0.3);
}

.quest-description {
    font-size: 1.1rem;
    color: #d1d5db;
    max-width: 800px;
    margin: 0 auto 25px;
    line-height: 1.8;
}

/* Click instruction */
.vault-intro::after {
    content: '📦 Click on any box to open and explore';
    display: block;
    margin-top: 25px;
    font-size: 1.05rem;
    color: #fbbf24;
    font-weight: 600;
    text-shadow: 0 0 20px rgba(251, 191, 36, 0.5);
    animation: instructionPulse 2s ease-in-out infinite;
}

@keyframes instructionPulse {
    0%, 100% { 
        opacity: 0.8;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.02);
    }
}

@media (max-width: 768px) {
    .vault-intro h2 {
        font-size: 2rem;
    }
    
    .quest-description {
        font-size: 1rem;
    }
    
    .vault-intro::after {
        font-size: 0.95rem;
    }
}

/* Read section wrapper for XP tracking */
.read-section {
    position: relative;
    transform-style: preserve-3d;
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 3D Box Styling - Closed State */
.artifact-card {
    position: relative;
    width: 100%;
    height: 280px;
    transform-style: preserve-3d;
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
    margin-bottom: 60px;
}

/* Box container - main body */
.artifact-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 5%;
    width: 90%;
    height: 60%;
    background: linear-gradient(145deg, #4a4a4a 0%, #2a2a2a 100%);
    border-radius: 4px;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.6),
        inset 0 -3px 10px rgba(0, 0, 0, 0.4),
        inset 0 3px 10px rgba(255, 255, 255, 0.1);
    transform: rotateX(0deg);
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Box lid - angled top */
.artifact-card::after {
    content: '';
    position: absolute;
    bottom: 50%;
    left: 5%;
    width: 90%;
    height: 55%;
    background: linear-gradient(160deg, #b8b8b8 0%, #8a8a8a 50%, #5a5a5a 100%);
    border-radius: 4px 4px 0 0;
    box-shadow: 
        0 -5px 20px rgba(0, 0, 0, 0.3),
        inset 0 2px 15px rgba(255, 255, 255, 0.3),
        inset 0 -2px 10px rgba(0, 0, 0, 0.2),
        0 15px 40px rgba(0, 0, 0, 0.4);
    transform: rotateX(-60deg);
    transform-origin: bottom center;
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    clip-path: polygon(0 0, 100% 0, 95% 100%, 5% 100%);
}

/* Rarity badge on the lid */
.artifact-card .rarity-badge {
    position: absolute;
    top: 25%;
    left: 50%;
    transform: translate(-50%, -50%) rotateX(-60deg);
    z-index: 5;
    padding: 8px 18px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
    transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

/* Hide all content when closed */
.artifact-card .artifact-header h3,
.artifact-card .artifact-content {
    opacity: 0;
    transform: scale(0.7) translateY(50px);
    transition: all 0.6s ease;
    pointer-events: none;
    position: absolute;
    width: 90%;
    left: 5%;
}

.artifact-card .artifact-header {
    top: 20px;
}

.artifact-card .artifact-content {
    top: 80px;
}

/* Hover effect for closed box */
.artifact-card:not(.open):hover::after {
    transform: rotateX(-55deg) translateY(-5px);
    box-shadow: 
        0 -8px 25px rgba(0, 0, 0, 0.4),
        inset 0 2px 20px rgba(255, 255, 255, 0.4),
        inset 0 -2px 15px rgba(0, 0, 0, 0.25),
        0 20px 50px rgba(0, 0, 0, 0.5);
}

.artifact-card:not(.open):hover::before {
    box-shadow: 
        0 25px 60px rgba(0, 0, 0, 0.7),
        inset 0 -3px 10px rgba(0, 0, 0, 0.5),
        inset 0 3px 10px rgba(255, 255, 255, 0.15);
}

/* OPEN STATE */
.artifact-card.open {
    height: auto;
    min-height: 550px;
    margin-bottom: 60px;
}

/* Open box - body expands */
.artifact-card.open::before {
    height: auto;
    min-height: 550px;
    background: linear-gradient(145deg, #1a1a2e 0%, #0f1419 100%);
    border: 1px solid rgba(125, 211, 252, 0.2);
    box-shadow: 
        0 30px 70px rgba(0, 0, 0, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.1),
        0 0 50px rgba(125, 211, 252, 0.15);
    transform: rotateX(0deg);
}

/* Open box - lid flips back */
.artifact-card.open::after {
    transform: rotateX(-140deg) translateY(-20px);
    opacity: 0.6;
    filter: brightness(0.7);
}

/* Open box - reposition and show badge */
.artifact-card.open .rarity-badge {
    position: relative;
    top: 0;
    left: 0;
    transform: none;
    display: inline-block;
    margin-bottom: 10px;
}

/* Show content when open */
.artifact-card.open .artifact-header h3,
.artifact-card.open .artifact-content {
    opacity: 1;
    transform: scale(1) translateY(0);
    pointer-events: auto;
    position: relative;
    transition: all 0.6s ease 0.3s;
    width: 100%;
    left: 0;
    padding: 0 30px;
}

.artifact-card.open .artifact-header {
    padding: 30px 30px 0;
}

/* Rarity badge colors */
.rarity-badge.legendary {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
    box-shadow: 0 6px 25px rgba(251, 191, 36, 0.6);
}

.rarity-badge.epic {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: #ffffff;
    box-shadow: 0 6px 25px rgba(249, 115, 22, 0.6);
}

.rarity-badge.rare {
    background: linear-gradient(135deg, #a855f7, #9333ea);
    color: #ffffff;
    box-shadow: 0 6px 25px rgba(168, 85, 247, 0.6);
}

.rarity-badge.common {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #ffffff;
    box-shadow: 0 6px 25px rgba(34, 197, 94, 0.6);
}

/* Card header */
.artifact-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
    line-height: 1.3;
}

/* Icon */
.artifact-icon {
    font-size: 4rem;
    text-align: center;
    margin: 25px 0;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.5));
    transition: all 0.4s ease;
}

.artifact-card.open .artifact-icon {
    animation: iconReveal 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s backwards;
}

@keyframes iconReveal {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

/* Description */
.artifact-description {
    color: #d1d5db;
    font-size: 1.05rem;
    line-height: 1.7;
    margin: 20px 0;
}

/* Tech stack */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.tech-tag {
    background: rgba(125, 211, 252, 0.15);
    border: 1px solid rgba(125, 211, 252, 0.4);
    color: #7dd3fc;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.tech-tag:hover {
    background: rgba(125, 211, 252, 0.25);
    border-color: #7dd3fc;
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 5px 15px rgba(125, 211, 252, 0.4);
}

/* Stats */
.artifact-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin: 20px 0;
}

.stat {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #10b981;
    padding: 10px 18px;
    border-radius: 15px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat:hover {
    background: rgba(16, 185, 129, 0.25);
    border-color: #10b981;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.3);
}

/* Artifact link */
.artifact-link {
    display: inline-block;
    margin-top: 20px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #7dd3fc, #38bdf8);
    color: #1a1a2e;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px rgba(125, 211, 252, 0.4);
}

.artifact-link:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(125, 211, 252, 0.6);
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
}

/* XP Indicator - positioned below box with glow */
.xp-indicator {
    position: relative;
    margin-top: 20px;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1a1a2e;
    padding: 10px 28px;
    border-radius: 25px;
    font-weight: 700;
    font-size: 1rem;
    box-shadow: 
        0 8px 30px rgba(251, 191, 36, 0.6),
        0 0 40px rgba(251, 191, 36, 0.4),
        inset 0 1px 2px rgba(255, 255, 255, 0.3);
    z-index: 10;
    transition: all 0.4s ease;
}

.read-section.viewed .xp-indicator {
    background: linear-gradient(135deg, #6b7280, #4b5563);
    color: #d1d5db;
    animation: none;
    box-shadow: 0 8px 20px rgba(107, 114, 128, 0.4);
}

/* Entrance animations */
.read-section {
    animation: boxDrop 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) backwards;
}

.read-section:nth-child(1) { animation-delay: 0.1s; }
.read-section:nth-child(2) { animation-delay: 0.2s; }
.read-section:nth-child(3) { animation-delay: 0.3s; }
.read-section:nth-child(4) { animation-delay: 0.4s; }

@keyframes boxDrop {
    0% {
        opacity: 0;
        transform: translateY(-100px) rotateX(-30deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotateX(0deg);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .artifact-collection {
        grid-template-columns: 1fr;
        gap: 100px 40px;
        padding: 40px 15px 80px;
    }
    
    .artifact-card {
        height: 240px;
        transform: translateY(100px);
    }
    
    .artifact-card.open {
        min-height: 500px;
    }
    
    .artifact-card .artifact-header h3,
    .artifact-card .artifact-content {
        width: 95%;
        left: 2.5%;
    }
    
    .artifact-card.open .artifact-header h3,
    .artifact-card.open .artifact-content {
        padding: 0 20px;
    }
    
    .artifact-card.open .artifact-header {
        padding: 20px 20px 0;
    }
    
    .artifact-icon {
        font-size: 3rem;
    }
    
    .artifact-header h3 {
        font-size: 1.25rem;
    }
    
    .xp-indicator {
        display: none !important;
    }
    
    .artifact-card::before {
        box-shadow: 
            0 20px 50px rgba(0, 0, 0, 0.6),
            inset 0 -3px 10px rgba(0, 0, 0, 0.4),
            inset 0 3px 10px rgba(255, 255, 255, 0.1),
            0 0 30px rgba(251, 191, 36, 0.4);
    }
    
    .artifact-card:not(.open):hover::before {
        box-shadow: 
            0 25px 60px rgba(0, 0, 0, 0.7),
            inset 0 -3px 10px rgba(0, 0, 0, 0.5),
            inset 0 3px 10px rgba(255, 255, 255, 0.15),
            0 0 40px rgba(251, 191, 36, 0.6);
    }
}


/* Intro section styling */
.vault-intro {
    text-align: center;
    padding: 40px 20px 30px;
    margin-bottom: 20px;
}

.vault-intro h2 {
    font-size: 2.5rem;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(125, 211, 252, 0.3);
}

.quest-description {
    font-size: 1.1rem;
    color: #d1d5db;
    max-width: 800px;
    margin: 0 auto 25px;
    line-height: 1.8;
}

/* Click instruction */
.vault-intro::after {
    content: '📦 Click on any box to open and explore';
    display: block;
    margin-top: 25px;
    font-size: 1.05rem;
    color: #fbbf24;
    font-weight: 600;
    text-shadow: 0 0 20px rgba(251, 191, 36, 0.5);
    animation: instructionPulse 2s ease-in-out infinite;
}

@keyframes instructionPulse {
    0%, 100% { 
        opacity: 0.8;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.02);
    }
}

@media (max-width: 768px) {
    .vault-intro h2 {
        font-size: 2rem;
    }
    
    .quest-description {
        font-size: 1rem;
    }
    
    .vault-intro::after {
        font-size: 0.95rem;
    }
}

/* Filter Styling */
.rarity-filters {
    margin: 30px auto;
    text-align: center;
}

.rarity-filters h3 {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 20px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.filter-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 28px;
    border: 2px solid transparent;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(10px);
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
}

.filter-btn.active {
    background: linear-gradient(135deg, #7dd3fc, #0ea5e9);
    border-color: #0ea5e9;
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.5);
}

.filter-btn.legendary-btn {
    border-color: #fbbf24;
}

.filter-btn.legendary-btn:hover,
.filter-btn.legendary-btn.active {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    border-color: #fbbf24;
    color: #1a1a2e;
    box-shadow: 0 8px 25px rgba(251, 191, 36, 0.5);
}

.filter-btn.epic-btn {
    border-color: #f97316;
}

.filter-btn.epic-btn:hover,
.filter-btn.epic-btn.active {
    background: linear-gradient(135deg, #f97316, #ea580c);
    border-color: #f97316;
    box-shadow: 0 8px 25px rgba(249, 115, 22, 0.5);
}

.filter-btn.rare-btn {
    border-color: #a855f7;
}

.filter-btn.rare-btn:hover,
.filter-btn.rare-btn.active {
    background: linear-gradient(135deg, #a855f7, #9333ea);
    border-color: #a855f7;
    box-shadow: 0 8px 25px rgba(168, 85, 247, 0.5);
}

.filter-btn.common-btn {
    border-color: #22c55e;
}

.filter-btn.common-btn:hover,
.filter-btn.common-btn.active {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    border-color: #22c55e;
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.5);
}

@media (max-width: 768px) {
    .filter-buttons {
        gap: 10px;
    }
    
    .filter-btn {
        padding: 10px 20px;
        font-size: 0.85rem;
    }
}