.store-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 220;
    padding: calc(24px + var(--safe-area-inset-top)) calc(24px + var(--safe-area-inset-right)) calc(24px + var(--safe-area-inset-bottom)) calc(24px + var(--safe-area-inset-left));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.store-overlay.is-open {
    display: flex;
}

/* PWA Standalone Mode - Full-screen store experience */
@media all and (display-mode: standalone) {
    .store-overlay {
        background: radial-gradient(ellipse at center, rgba(10, 0, 25, 0.98) 0%, rgba(0, 0, 0, 0.99) 100%);
    }
}

/* iOS PWA detection via navigator.standalone */
@supports (-webkit-touch-callout: none) {
    @media (display-mode: standalone) {
        .store-overlay {
            background: radial-gradient(ellipse at center, rgba(10, 0, 25, 0.98) 0%, rgba(0, 0, 0, 0.99) 100%);
        }
    }
}

.store-panel {
    width: min(680px, 92vw);
    max-height: calc(85vh - var(--safe-area-inset-top) - var(--safe-area-inset-bottom));
    background: rgba(8, 2, 20, 0.95);
    border: 1px solid rgba(0, 255, 255, 0.12);
    border-radius: 20px;
    padding: 20px 22px;
    box-shadow:
        0 0 60px rgba(0, 0, 0, 0.6),
        0 0 40px rgba(0, 255, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.store-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.store-title-main {
    color: #fff;
    letter-spacing: 6px;
    font-size: 18px;
    text-transform: uppercase;
    text-shadow: 0 0 20px rgba(0, 255, 255, 0.4);
    font-weight: 600;
}

.store-close {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.8);
    width: 42px;
    height: 42px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.store-close:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(0, 255, 255, 0.5);
    box-shadow: 0 0 12px rgba(0, 255, 255, 0.3);
    color: #fff;
}

.store-close:active {
    transform: scale(0.95);
}

.store-section-title {
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 3px;
    font-size: 11px;
    margin-bottom: 12px;
    flex-shrink: 0;
    text-transform: uppercase;
}

.store-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.store-tab {
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid rgba(0, 255, 255, 0.25);
    background: rgba(0, 255, 255, 0.06);
    color: rgba(255, 255, 255, 0.85);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.store-tab:hover {
    border-color: rgba(0, 255, 255, 0.4);
    background: rgba(0, 255, 255, 0.1);
}

.store-tab.is-active {
    color: #00ffff;
    border-color: rgba(0, 255, 255, 0.7);
    background: rgba(0, 255, 255, 0.15);
    box-shadow: 0 0 16px rgba(0, 255, 255, 0.25);
}

.store-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 4px;
    margin-right: -4px;
    flex: 1;
    min-height: 0;
}

.store-grid::-webkit-scrollbar {
    width: 5px;
}

.store-grid::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.store-grid::-webkit-scrollbar-thumb {
    background: rgba(0, 255, 255, 0.25);
    border-radius: 3px;
}

.store-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 255, 255, 0.4);
}

.store-card {
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: linear-gradient(135deg, rgba(10, 5, 25, 0.8) 0%, rgba(5, 0, 15, 0.9) 100%);
    border: 1px solid rgba(0, 255, 255, 0.18);
    border-radius: 14px;
    padding: 12px;
    transition: all 0.25s ease;
}

.store-card:hover {
    border-color: rgba(0, 255, 255, 0.45);
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.03);
    transform: translateY(-2px);
}

.store-preview {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: radial-gradient(circle at 50% 50%, rgba(0, 255, 255, 0.12), rgba(0, 0, 0, 0.5));
    border: 1px solid rgba(0, 255, 255, 0.2);
}

.store-preview canvas {
    width: 90px;
    height: 90px;
}

.store-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    text-align: left;
    flex: 1;
    min-height: 0;
}

.store-title {
    font-size: 15px;
    color: #fff;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.store-description {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.55);
    font-style: italic;
    margin: 2px 0;
    line-height: 1.35;
    min-height: 30px;
}

.store-price {
    color: #00ffff;
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.store-status {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.6);
    min-height: 14px;
}

.store-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.store-btn {
    width: 100%;
    padding: 10px 14px;
    font-size: 12px;
    letter-spacing: 2px;
    font-weight: 600;
}

.store-btn[disabled] {
    opacity: 0.4;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .store-overlay {
        padding: var(--safe-area-inset-top) var(--safe-area-inset-right) var(--safe-area-inset-bottom) var(--safe-area-inset-left);
        align-items: stretch;
        justify-content: stretch;
    }

    .store-panel {
        padding: 16px 12px;
        max-height: 100%;
        height: 100%;
        width: 100%;
        max-width: 100%;
        border-radius: 0;
        border: none;
        box-shadow: none;
    }

    .store-panel-header {
        margin-bottom: 14px;
        padding-bottom: 12px;
        padding-top: 4px;
    }

    .store-title-main {
        font-size: 16px;
        letter-spacing: 5px;
    }

    .store-close {
        width: 40px;
        height: 40px;
        font-size: 20px;
        min-width: 40px;
    }

    .store-tabs {
        margin-bottom: 12px;
    }

    .store-section-title {
        display: none;
    }

    .store-grid {
        gap: 10px;
        grid-template-columns: repeat(2, 1fr);
        padding-right: 2px;
    }

    .store-card {
        padding: 8px;
        gap: 6px;
        border-radius: 10px;
    }

    .store-info {
        gap: 3px;
    }

    .store-preview {
        height: 70px;
        border-radius: 8px;
    }

    .store-preview canvas {
        width: 60px;
        height: 60px;
    }

    .store-title {
        font-size: 13px;
        letter-spacing: 0.3px;
    }

    .store-price {
        font-size: 11px;
    }

    .store-description {
        font-size: 9px;
        min-height: 24px;
        line-height: 1.35;
        margin: 0;
    }

    .store-status {
        font-size: 9px;
        min-height: 12px;
    }

    .store-btn {
        width: 100%;
        padding: 8px 10px;
        font-size: 10px;
        letter-spacing: 1.5px;
    }
}