*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg-primary: #0a0a0f; --bg-secondary: #12121a; --bg-card: #16162266;
    --border: #1e1e2e; --text-primary: #e8e8f0; --text-secondary: #8888a0;
    --text-muted: #55556a; --accent-green: #00ff88; --accent-green-dim: #00ff8822;
    --accent-purple: #8b5cf6; --accent-gold: #fbbf24; --accent-red: #ef4444;
    --accent-cyan: #06b6d4;
}
html { scroll-behavior: smooth; }
body {
    font-family: 'Rajdhani', sans-serif; background: var(--bg-primary);
    color: var(--text-primary); overflow-x: hidden; line-height: 1.6;
}

/* ═══════════ NAV ═══════════ */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(10,10,15,0.9); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 40px; height: 70px;
    display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
    font-family: 'Exo 2', sans-serif; font-weight: 900; font-size: 1.5rem;
    letter-spacing: 2px; text-transform: uppercase; text-decoration: none;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-logo span { font-weight: 400; opacity: 0.6; -webkit-text-fill-color: var(--text-secondary); }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links a {
    color: var(--text-secondary); text-decoration: none; font-weight: 500;
    font-size: 0.95rem; padding: 8px 16px; border-radius: 8px;
    transition: all 0.3s; letter-spacing: 0.5px; text-transform: uppercase;
}
.nav-links a:hover { color: var(--accent-green); background: var(--accent-green-dim); }
.nav-active { color: var(--accent-green) !important; }

/* ═══════════ LAYOUT ═══════════ */
.shop-layout {
    display: grid; grid-template-columns: 1fr 380px;
    gap: 0; min-height: 100vh; padding-top: 70px;
}

/* ═══════════ MAIN CONTENT ═══════════ */
.shop-main { padding: 40px; overflow-y: auto; }
.shop-title {
    font-family: 'Exo 2', sans-serif; font-weight: 900; font-size: 2rem;
    text-transform: uppercase; margin-bottom: 6px;
}
.shop-subtitle { color: var(--text-secondary); margin-bottom: 32px; }

.shop-grades {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

/* ═══════════ GRADE CARDS ═══════════ */
.shop-grade-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 16px; padding: 28px 24px; position: relative;
    overflow: hidden; transition: all 0.4s; cursor: pointer;
}
.shop-grade-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, transparent, var(--card-accent), transparent);
    background-size: 200% 100%; animation: shimmerBar 3s ease-in-out infinite;
}
@keyframes shimmerBar {
    0%, 100% { background-position: -200% 0; }
    50% { background-position: 200% 0; }
}
.shop-grade-card:hover {
    border-color: var(--card-accent); transform: translateY(-4px);
    box-shadow: 0 16px 50px rgba(0,0,0,0.4), 0 0 30px color-mix(in srgb, var(--card-accent) 12%, transparent);
}
.shop-grade-card.in-cart {
    border-color: var(--accent-green);
    box-shadow: 0 0 20px rgba(0,255,136,0.1);
}
.shop-grade-card.in-cart::after {
    content: '✓'; position: absolute; top: 12px; right: 14px;
    background: var(--accent-green); color: var(--bg-primary);
    width: 26px; height: 26px; border-radius: 50%; display: flex;
    align-items: center; justify-content: center; font-weight: 900; font-size: 0.8rem;
}
.card-header { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.card-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem;
    background: linear-gradient(135deg, color-mix(in srgb, var(--card-accent) 18%, transparent), color-mix(in srgb, var(--card-accent) 6%, transparent));
    border: 1px solid color-mix(in srgb, var(--card-accent) 25%, transparent);
}
.card-name {
    font-family: 'Exo 2', sans-serif; font-weight: 800; font-size: 1.2rem;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--card-accent), color-mix(in srgb, var(--card-accent) 60%, white));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.card-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 12px; }
.card-price {
    font-family: 'Exo 2', sans-serif; font-size: 1.8rem; font-weight: 900; margin-bottom: 14px;
}
.card-price span { font-size: 0.85rem; color: var(--text-muted); font-weight: 400; }
.card-perks { list-style: none; margin-bottom: 18px; }
.card-perks li {
    padding: 5px 0; font-size: 0.88rem; color: var(--text-secondary);
    display: flex; align-items: center; gap: 8px;
}
.card-perks .check { font-weight: bold; }
.card-btn {
    width: 100%; padding: 12px; font-family: 'Exo 2', sans-serif;
    font-weight: 700; font-size: 0.9rem; border-radius: 10px;
    cursor: pointer; transition: all 0.3s; text-transform: uppercase;
    letter-spacing: 1px; border: 1px solid var(--card-accent);
    background: color-mix(in srgb, var(--card-accent) 8%, transparent);
    color: var(--card-accent);
}
.card-btn:hover {
    background: var(--card-accent); color: var(--bg-primary);
    box-shadow: 0 4px 20px color-mix(in srgb, var(--card-accent) 30%, transparent);
}
.card-btn.remove-btn {
    border-color: var(--accent-red); color: var(--accent-red);
    background: rgba(239,68,68,0.08);
}
.card-btn.remove-btn:hover {
    background: var(--accent-red); color: white;
}

/* ═══════════ CART SIDEBAR ═══════════ */
.cart-sidebar {
    background: var(--bg-secondary); border-left: 1px solid var(--border);
    padding: 32px 24px; display: flex; flex-direction: column;
    position: sticky; top: 70px; height: calc(100vh - 70px); overflow-y: auto;
}
.cart-title {
    font-family: 'Exo 2', sans-serif; font-weight: 800; font-size: 1.3rem;
    text-transform: uppercase; margin-bottom: 4px;
}
.cart-count { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 24px; }

.cart-empty {
    flex: 1; display: flex; flex-direction: column; align-items: center;
    justify-content: center; color: var(--text-muted); text-align: center;
}
.cart-empty .icon { font-size: 3rem; margin-bottom: 12px; opacity: 0.4; }
.cart-empty p { font-size: 0.9rem; }

.cart-items { flex: 1; display: flex; flex-direction: column; gap: 12px; }
.cart-item {
    background: rgba(255,255,255,0.03); border: 1px solid var(--border);
    border-radius: 12px; padding: 14px; display: flex; align-items: center;
    gap: 12px; animation: slideIn 0.3s ease;
}
@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}
.cart-item-icon {
    width: 40px; height: 40px; border-radius: 10px; display: flex;
    align-items: center; justify-content: center; font-size: 1.2rem;
    flex-shrink: 0;
}
.cart-item-info { flex: 1; }
.cart-item-name {
    font-family: 'Exo 2', sans-serif; font-weight: 700; font-size: 0.95rem;
}
.cart-item-price {
    font-family: 'JetBrains Mono', monospace; font-size: 0.8rem; color: var(--accent-green);
}
.cart-item-remove {
    background: none; border: none; color: var(--text-muted); cursor: pointer;
    font-size: 1.1rem; transition: color 0.2s; padding: 4px;
}
.cart-item-remove:hover { color: var(--accent-red); }

/* ═══════════ CART FOOTER ═══════════ */
.cart-footer {
    border-top: 1px solid var(--border); padding-top: 20px; margin-top: 20px;
}
.cart-total {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px;
}
.cart-total-label {
    font-size: 1rem; color: var(--text-secondary); text-transform: uppercase;
    letter-spacing: 1px;
}
.cart-total-price {
    font-family: 'Exo 2', sans-serif; font-size: 1.8rem; font-weight: 900;
    color: var(--accent-green);
}

.cart-form { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }
.cart-input {
    padding: 12px 16px; border-radius: 10px; border: 1px solid var(--border);
    background: var(--bg-primary); color: var(--text-primary);
    font-family: 'Rajdhani', sans-serif; font-size: 0.95rem; outline: none;
    transition: border-color 0.3s;
}
.cart-input:focus { border-color: var(--accent-green); }
.cart-input:disabled { opacity: 0.6; }

.cart-user-box {
    display: flex; align-items: center; gap: 10px;
    background: rgba(0,255,136,0.05); border: 1px solid rgba(0,255,136,0.15);
    border-radius: 10px; padding: 10px 14px;
}
.cart-user-avatar {
    width: 32px; height: 32px; border-radius: 8px;
    image-rendering: pixelated; border: 1px solid rgba(0,255,136,0.3);
}
.cart-user-name {
    font-family: 'Exo 2', sans-serif; font-weight: 700; font-size: 0.9rem;
}
.cart-user-tag {
    font-family: 'JetBrains Mono', monospace; font-size: 0.7rem; color: var(--accent-green);
}

#paypal-button-container { min-height: 45px; }

.cart-pay-btn {
    width: 100%; padding: 16px; border: none; border-radius: 12px;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
    color: var(--bg-primary); font-family: 'Exo 2', sans-serif;
    font-weight: 800; font-size: 1.05rem; cursor: pointer;
    text-transform: uppercase; letter-spacing: 1px; transition: all 0.3s;
}
.cart-pay-btn:hover {
    box-shadow: 0 8px 30px rgba(0,255,136,0.3); transform: translateY(-2px);
}
.cart-pay-btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; box-shadow: none; }

.cart-secure {
    text-align: center; margin-top: 12px; font-size: 0.78rem; color: var(--text-muted);
}

/* ═══════════ TOAST ═══════════ */
.toast {
    position: fixed; bottom: 24px; right: 24px; z-index: 9999;
    padding: 14px 24px; border-radius: 10px; font-weight: 600;
    font-size: 0.9rem; opacity: 0; transform: translateY(20px);
    transition: all 0.4s; pointer-events: none;
    background: rgba(0,255,136,0.15); border: 1px solid rgba(0,255,136,0.3);
    color: var(--accent-green);
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 900px) {
    .shop-layout { grid-template-columns: 1fr; }
    .cart-sidebar {
        position: fixed; bottom: 0; left: 0; right: 0; top: auto;
        height: auto; max-height: 50vh; border-left: none;
        border-top: 1px solid var(--border); z-index: 100;
        transform: translateY(calc(100% - 60px)); transition: transform 0.4s;
    }
    .cart-sidebar.open { transform: translateY(0); }
    .cart-toggle {
        display: flex !important; align-items: center; justify-content: center;
        gap: 8px; padding: 14px; cursor: pointer; font-family: 'Exo 2', sans-serif;
        font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
        background: var(--bg-secondary); border-bottom: 1px solid var(--border);
    }
    nav { padding: 0 16px; }
    .shop-main { padding: 24px 16px; }
}
@media (min-width: 901px) {
    .cart-toggle { display: none !important; }
}

/* ═══════════ SCROLLBAR ═══════════ */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ═══════════ CATEGORY TABS ═══════════ */
.category-tabs {
    display: flex; gap: 8px; margin-bottom: 32px; flex-wrap: wrap;
    padding: 6px; background: rgba(255,255,255,0.03);
    border: 1px solid var(--border); border-radius: 14px;
}
.cat-tab {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 12px 24px; border-radius: 10px; font-family: 'Exo 2', sans-serif;
    font-weight: 700; font-size: 0.95rem; cursor: pointer;
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    border: none; background: transparent;
    color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px;
    position: relative; overflow: hidden;
}
.cat-tab::before {
    content: ''; position: absolute; inset: 0; border-radius: 10px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--tab-color) 12%, transparent), color-mix(in srgb, var(--tab-color) 4%, transparent));
    opacity: 0; transition: opacity 0.3s;
}
.cat-tab:hover {
    color: var(--tab-color);
}
.cat-tab:hover::before { opacity: 1; }
.cat-tab.active {
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--tab-color), color-mix(in srgb, var(--tab-color) 75%, white));
    box-shadow: 0 4px 20px color-mix(in srgb, var(--tab-color) 35%, transparent);
    transform: scale(1.02);
}
.cat-tab.active::before { display: none; }
.cat-tab-icon {
    font-size: 1.15rem; position: relative; z-index: 1;
    filter: drop-shadow(0 0 4px currentColor);
}
.cat-tab span:not(.cat-tab-icon) { position: relative; z-index: 1; }

/* ═══════════ DETAIL POPUP ═══════════ */
.detail-overlay {
    display: none; position: fixed; inset: 0; z-index: 3000;
    background: rgba(0,0,0,0.75); backdrop-filter: blur(10px);
    align-items: center; justify-content: center; padding: 20px;
}
.detail-overlay.active { display: flex; }
.detail-modal {
    background: var(--bg-secondary); border: 1px solid var(--border);
    border-radius: 20px; padding: 36px; max-width: 520px; width: 100%;
    position: relative; animation: detailIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 85vh; overflow-y: auto;
}
@keyframes detailIn {
    from { opacity: 0; transform: scale(0.92) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
.detail-close {
    position: absolute; top: 16px; right: 18px;
    background: none; border: none; color: var(--text-muted);
    font-size: 1.3rem; cursor: pointer; transition: color 0.2s;
    width: 32px; height: 32px; display: flex; align-items: center;
    justify-content: center; border-radius: 8px;
}
.detail-close:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.detail-header {
    display: flex; align-items: center; gap: 16px; margin-bottom: 16px;
}
.detail-icon {
    width: 56px; height: 56px; border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; border: 1px solid; flex-shrink: 0;
}
.detail-name {
    font-family: 'Exo 2', sans-serif; font-weight: 900; font-size: 1.5rem;
    text-transform: uppercase;
}
.detail-short { color: var(--text-secondary); font-size: 0.9rem; }
.detail-price {
    font-family: 'Exo 2', sans-serif; font-size: 2.2rem; font-weight: 900;
    margin: 16px 0;
}
.detail-perks {
    list-style: none; margin-bottom: 24px;
}
.detail-perks li {
    padding: 7px 0; font-size: 0.92rem; color: var(--text-secondary);
    display: flex; align-items: center; gap: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}
.detail-perks li:last-child { border: none; }
.detail-perks .check { font-weight: bold; }
.detail-buy-btn {
    width: 100%; padding: 16px; border: none; border-radius: 12px;
    color: var(--bg-primary); font-family: 'Exo 2', sans-serif;
    font-weight: 800; font-size: 1.05rem; cursor: pointer;
    text-transform: uppercase; letter-spacing: 1px; transition: all 0.3s;
}
.detail-buy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

/* ═══════════ PROMO CODE ═══════════ */
.promo-section { margin-bottom: 16px; }
.promo-input-row {
    display: flex; gap: 6px;
}
.promo-input { flex: 1 !important; }
.promo-apply-btn {
    padding: 0 20px; border: none; border-radius: 10px;
    background: linear-gradient(135deg, var(--accent-green), #00cc6a);
    color: var(--bg-primary); font-family: 'Exo 2', sans-serif;
    font-weight: 800; font-size: 0.8rem; letter-spacing: 1px;
    cursor: pointer; transition: all 0.3s; text-transform: uppercase;
    white-space: nowrap;
}
.promo-apply-btn:hover {
    box-shadow: 0 0 20px rgba(0,255,136,0.3); transform: translateY(-1px);
}
.promo-success {
    display: flex !important; align-items: center; justify-content: space-between;
    margin-top: 8px; padding: 10px 14px; border-radius: 8px;
    background: rgba(0,255,136,0.08); border: 1px solid rgba(0,255,136,0.2);
    color: var(--accent-green); font-size: 0.85rem; font-weight: 600;
}
.promo-error {
    margin-top: 8px; padding: 10px 14px; border-radius: 8px;
    background: rgba(239,68,68,0.08); border: 1px solid rgba(239,68,68,0.2);
    color: var(--accent-red); font-size: 0.85rem;
}
.promo-remove {
    background: none; border: none; color: var(--accent-red); cursor: pointer;
    font-size: 1rem; padding: 2px 6px; border-radius: 4px; transition: background 0.2s;
}
.promo-remove:hover { background: rgba(239,68,68,0.15); }