/* ============================================
   DUNGEON HUNTER — Shop Screen (Premium RPG Style)
   Vibrant dungeon-themed with rich gold/purple accents
   ============================================ */

#screen-shop {
    background: transparent;
    display: none;
    z-index: 10;
}
#screen-shop.active {
    display: flex;
}

/* Atmospheric dungeon overlay */
.shop-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--ui-shop-overlay);
    z-index: 0;
    pointer-events: none;
}

.shop-container {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    pointer-events: none;
}

.shop-container > * {
    pointer-events: auto;
}

/* ---- TOP BAR ---- */
.shop-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: linear-gradient(180deg, var(--ui-bg-glass-strong) 0%, var(--ui-bg-glass) 80%, transparent 100%);
    pointer-events: auto;
}

.shop-back-btn {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--ui-bg-glass);
    color: var(--ui-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.shop-back-btn:hover {
    background: var(--ui-bg-glass-strong);
    border-color: var(--ui-gold);
    transform: scale(1.05);
    box-shadow: 0 0 12px var(--ui-shadow-glow-gold);
}

.shop-gold-badge {
    display: flex;
    align-items: center;
    background: var(--ui-bg-glass);
    border: 2px solid var(--ui-border);
    border-radius: 16px;
    padding: 7px 14px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    color: var(--ui-gold);
    flex-shrink: 0;
    box-shadow: 0 0 10px var(--ui-shadow-sm);
}

.gold-coin {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ffd700, #ff9f00);
    color: #3d2200;
    font-weight: 900;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(255,215,0,0.4), inset 0 -2px 0 rgba(0,0,0,0.1);
}

/* Tab row */
.shop-tabs-row {
    display: flex;
    gap: 6px;
    flex: 1;
    justify-content: center;
}

.shop-tab {
    background: var(--ui-bg-glass);
    border: 2px solid var(--ui-border);
    border-radius: 10px;
    color: var(--ui-text-secondary);
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 600;
    padding: 9px 18px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.shop-tab:hover {
    color: var(--ui-text);
    border-color: var(--ui-border-active);
    background: var(--ui-bg-glass-strong);
    transform: translateY(-2px);
    box-shadow: var(--ui-shadow-sm);
}

.shop-tab.active {
    background: var(--ui-bg-deep);
    color: var(--ui-gold);
    border-color: var(--ui-gold);
    box-shadow: var(--ui-shadow-sm);
}

/* ---- 3D VIEWPORT ---- */
.shop-3d-viewport {
    flex: 1;
    pointer-events: none;
}

/* ---- BOTTOM CARD: Side Stats Layout ---- */
.shop-bottom-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 20px;
    background: linear-gradient(0deg, var(--ui-bg-glass-strong) 0%, var(--ui-bg-glass) 80%, transparent 100%);
    pointer-events: auto;
}

/* Navigation arrows */
.btn-carousel {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 2px solid var(--ui-border);
    background: var(--ui-bg-glass);
    color: var(--ui-gold);
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.btn-carousel:hover {
    transform: scale(1.12);
    background: var(--ui-bg-glass-strong);
    border-color: var(--ui-gold);
    box-shadow: var(--ui-shadow-glow-gold);
}
.btn-carousel:active {
    transform: scale(0.92);
}

/* Info card — horizontal layout with name on left, stats on right */
.shop-hero-info-card {
    flex: 1;
    max-width: 550px;
    background: var(--ui-bg-card);
    border: 2px solid var(--ui-border);
    border-radius: 14px;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 
        0 4px 20px rgba(0,0,0,0.4),
        inset 0 1px 0 rgba(200,160,60,0.1);
    transition: transform 0.2s ease;
}

.shop-card-left {
    flex: 1;
    min-width: 0;
}

.shop-card-right {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.shop-item-name {
    font-family: var(--font-heading);
    font-size: 20px;
    color: var(--ui-gold);
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 3px;
    text-transform: uppercase;
    text-shadow: 0 0 8px rgba(200,160,60,0.3);
}

.shop-item-desc {
    font-size: 12px;
    color: var(--ui-text-secondary);
    font-weight: 400;
    margin-bottom: 6px;
}

.shop-item-stats {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.shop-item-stat {
    background: var(--ui-bg-deep);
    border: 1px solid var(--ui-border);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--ui-text);
    letter-spacing: 1px;
}

.shop-item-stat.stat-positive { color: #50e070; border-color: rgba(80,224,112,0.2); }
.shop-item-stat.stat-negative { color: #e05050; border-color: rgba(224,80,80,0.2); }

.shop-action-container {
    display: flex;
    justify-content: center;
}

/* Action buttons */
.btn.shop-action-btn {
    background: linear-gradient(135deg, #ffd700, #e0a000);
    color: #2a1500;
    padding: 9px 28px;
    font-size: 12px;
    font-weight: 900;
    border: 2px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    letter-spacing: 2px;
    box-shadow: 0 3px 12px rgba(200,160,60,0.35), inset 0 1px 0 rgba(255,255,255,0.2);
    transition: all 0.2s ease;
    text-transform: uppercase;
    cursor: pointer;
    min-width: auto;
    white-space: nowrap;
}
.btn.shop-action-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200,160,60,0.45);
    background: linear-gradient(135deg, #ffe44d, #ffd700);
}
.btn.shop-action-btn:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: 0 1px 6px rgba(200,160,60,0.3);
}
.btn.shop-action-btn:disabled {
    background: var(--ui-bg-deep);
    color: var(--ui-text-dim);
    border-color: var(--ui-border);
    box-shadow: none;
    cursor: default;
}

.btn.shop-action-btn.equipped-badge {
    background: var(--ui-bg-deep);
    color: var(--ui-green);
    border-color: var(--ui-green);
    box-shadow: var(--ui-shadow-sm);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .shop-topbar { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
    .shop-tabs-row { order: 3; width: 100%; justify-content: stretch; }
    .shop-tab { flex: 1; padding: 7px 8px; font-size: 10px; letter-spacing: 1px; }
    .shop-gold-badge { font-size: 13px; padding: 5px 10px; }
    .shop-bottom-card { padding: 10px; gap: 8px; }
    .btn-carousel { width: 38px; height: 38px; font-size: 16px; border-radius: 10px; }
    .shop-hero-info-card { 
        flex-direction: column; 
        padding: 10px 14px; 
        gap: 8px;
        text-align: center;
    }
    .shop-card-left { text-align: center; }
    .shop-item-stats { justify-content: center; }
    .shop-item-name { font-size: 16px; }
    .shop-item-desc { font-size: 11px; margin-bottom: 4px; }
    .shop-item-stat { font-size: 10px; padding: 2px 8px; }
    .btn.shop-action-btn { padding: 7px 20px; font-size: 11px; }
}