/* ===== BUTTONS ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: 10px var(--space-6); border-radius: var(--radius-md); font-size: var(--font-size-base); font-weight: 600; line-height: 1; transition: all var(--transition-fast); cursor: pointer; white-space: nowrap; border: 2px solid transparent; }
.btn:active { transform: scale(0.98); }
.btn-sm { padding: 7px var(--space-4); font-size: var(--font-size-sm); }
.btn-lg { padding: 14px var(--space-8); font-size: var(--font-size-lg); }
.btn-full { width: 100%; }
.btn-icon { padding: 10px; border-radius: var(--radius-md); }

.btn-primary { background: var(--color-primary); color: white; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: white; }
.btn-secondary { background: var(--color-secondary); color: white; border-color: var(--color-secondary); }
.btn-secondary:hover { background: var(--color-secondary-dark); border-color: var(--color-secondary-dark); color: white; }
.btn-accent { background: var(--color-accent); color: white; border-color: var(--color-accent); }
.btn-accent:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); color: white; }
.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: white; }
.btn-outline-gray { background: transparent; color: var(--color-body); border-color: var(--color-border); }
.btn-outline-gray:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost { background: transparent; color: var(--color-body); border-color: transparent; }
.btn-ghost:hover { background: var(--color-bg-light); color: var(--color-primary); }
.btn-white { background: white; color: var(--color-primary); border-color: white; }
.btn-white:hover { background: var(--color-bg-light); }
.btn-danger { background: var(--color-error); color: white; border-color: var(--color-error); }
.btn-danger:hover { background: #B91C1C; border-color: #B91C1C; color: white; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ===== CARDS ===== */
.card { background: white; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); overflow: hidden; transition: transform var(--transition-base), box-shadow var(--transition-base); }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.card-body { padding: var(--space-5); }
.card-footer { padding: var(--space-4) var(--space-5); border-top: 1px solid var(--color-border-light); background: var(--color-bg-light); }
.card-flat { box-shadow: none; border: 1px solid var(--color-border); }
.card-flat:hover { box-shadow: var(--shadow-md); border-color: var(--color-primary); }

/* ===== PRODUCT CARD ===== */
.product-card { display: block; background: white; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform var(--transition-base), box-shadow var(--transition-base); cursor: pointer; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.product-card__image { position: relative; aspect-ratio: 1; overflow: hidden; background: var(--color-bg-light); }
.product-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.product-card:hover .product-card__image img { transform: scale(1.05); }
.product-card__badges { position: absolute; top: var(--space-2); left: var(--space-2); display: flex; flex-direction: column; gap: var(--space-1); }
.product-card__body { padding: var(--space-4); }
.product-card__name { font-size: var(--font-size-sm); font-weight: 600; color: var(--color-title); margin-bottom: var(--space-1); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.4; }
.product-card__shop { font-size: var(--font-size-xs); color: var(--color-muted); margin-bottom: var(--space-2); }
.product-card__price-row { display: flex; align-items: baseline; gap: var(--space-2); margin-bottom: var(--space-2); }
.product-card__price { font-size: var(--font-size-lg); font-weight: 700; color: var(--color-primary); }
.product-card__original { font-size: var(--font-size-xs); color: var(--color-muted); text-decoration: line-through; }
.product-card__meta { display: flex; align-items: center; justify-content: space-between; }
.product-card__sales { font-size: var(--font-size-xs); color: var(--color-muted); }
.product-card__rating { font-size: var(--font-size-xs); color: var(--color-secondary); }
.product-card__add-btn { position: absolute; bottom: var(--space-3); right: var(--space-3); width: 32px; height: 32px; border-radius: 50%; background: var(--color-primary); color: white; display: flex; align-items: center; justify-content: center; font-size: 20px; line-height: 1; opacity: 0; transition: opacity var(--transition-fast), transform var(--transition-fast); transform: scale(0.8); }
.product-card:hover .product-card__add-btn { opacity: 1; transform: scale(1); }

/* ===== SHOP CARD ===== */
.shop-card { display: block; background: white; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: transform var(--transition-base), box-shadow var(--transition-base); }
.shop-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.shop-card__banner { height: 100px; background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%); position: relative; overflow: hidden; }
.shop-card__banner-pattern { position: absolute; inset: 0; opacity: 0.1; background-image: repeating-linear-gradient(45deg, white 0, white 1px, transparent 0, transparent 50%); background-size: 10px 10px; }
.shop-card__logo { width: 64px; height: 64px; border-radius: var(--radius-lg); border: 3px solid white; background: white; display: flex; align-items: center; justify-content: center; font-size: 28px; position: absolute; bottom: -20px; left: var(--space-5); box-shadow: var(--shadow-md); overflow: hidden; }
.shop-card__body { padding: var(--space-8) var(--space-5) var(--space-5); }
.shop-card__name { font-size: var(--font-size-base); font-weight: 700; color: var(--color-title); margin-bottom: var(--space-1); }
.shop-card__meta { display: flex; align-items: center; gap: var(--space-4); font-size: var(--font-size-xs); color: var(--color-muted); margin-bottom: var(--space-3); }
.shop-card__desc { font-size: var(--font-size-sm); color: var(--color-body); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: var(--space-4); }
.shop-card__footer { display: flex; align-items: center; justify-content: space-between; }
.shop-card__location { font-size: var(--font-size-xs); color: var(--color-muted); display: flex; align-items: center; gap: 4px; }

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: var(--space-5); }
.form-label { display: block; font-size: var(--font-size-sm); font-weight: 600; color: var(--color-title); margin-bottom: var(--space-2); }
.form-label .required { color: var(--color-primary); margin-left: 2px; }
.form-input { width: 100%; padding: 10px var(--space-4); border: 1.5px solid var(--color-border); border-radius: var(--radius-md); font-size: var(--font-size-base); color: var(--color-title); background: white; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); outline: none; }
.form-input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1); }
.form-input::placeholder { color: var(--color-muted); }
.form-input:disabled { background: var(--color-bg-light); cursor: not-allowed; }
.form-textarea { resize: vertical; min-height: 120px; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239CA3AF' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.form-error { font-size: var(--font-size-xs); color: var(--color-error); margin-top: var(--space-1); }
.form-hint { font-size: var(--font-size-xs); color: var(--color-muted); margin-top: var(--space-1); }
.form-input.error { border-color: var(--color-error); }

/* Search bar */
.search-bar { display: flex; align-items: center; background: white; border: 1.5px solid var(--color-border); border-radius: var(--radius-full); overflow: hidden; transition: border-color var(--transition-fast), box-shadow var(--transition-fast); }
.search-bar:focus-within { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.1); }
.search-bar input { flex: 1; padding: 10px var(--space-5); border: none; outline: none; font-size: var(--font-size-base); background: transparent; }
.search-bar button { padding: 10px var(--space-5); background: var(--color-primary); color: white; border: none; cursor: pointer; font-size: var(--font-size-base); transition: background var(--transition-fast); }
.search-bar button:hover { background: var(--color-primary-dark); }

/* ===== FILTER TABS ===== */
.filter-tabs { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.filter-tab { padding: 7px var(--space-4); border-radius: var(--radius-full); font-size: var(--font-size-sm); font-weight: 500; border: 1.5px solid var(--color-border); color: var(--color-body); cursor: pointer; transition: all var(--transition-fast); background: white; }
.filter-tab:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-tab.active { background: var(--color-primary); border-color: var(--color-primary); color: white; }

/* ===== QUANTITY CONTROL ===== */
.qty-control { display: inline-flex; align-items: center; border: 1.5px solid var(--color-border); border-radius: var(--radius-md); overflow: hidden; }
.qty-btn { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--color-bg-light); color: var(--color-body); font-size: 18px; cursor: pointer; transition: background var(--transition-fast); border: none; }
.qty-btn:hover { background: var(--color-border); }
.qty-input { width: 48px; height: 36px; text-align: center; border: none; border-left: 1.5px solid var(--color-border); border-right: 1.5px solid var(--color-border); font-size: var(--font-size-base); font-weight: 600; outline: none; }

/* ===== RATING STARS ===== */
.rating { display: inline-flex; align-items: center; gap: var(--space-1); }
.rating-stars { color: var(--color-secondary); font-size: var(--font-size-sm); }
.rating-score { font-weight: 700; color: var(--color-title); font-size: var(--font-size-sm); }
.rating-count { color: var(--color-muted); font-size: var(--font-size-xs); }

/* ===== BADGE ===== */
.badge { display: inline-flex; align-items: center; padding: 2px 8px; border-radius: var(--radius-sm); font-size: var(--font-size-xs); font-weight: 700; }
.badge-hot { background: var(--color-primary); color: white; }
.badge-new { background: var(--color-accent); color: white; }
.badge-sale { background: var(--color-secondary); color: white; }
.badge-free-ship { background: #EFF6FF; color: var(--color-info); }

/* ===== MODAL ===== */
.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: var(--z-modal); display: flex; align-items: center; justify-content: center; padding: var(--space-4); opacity: 0; pointer-events: none; transition: opacity var(--transition-base); }
.modal-backdrop.active { opacity: 1; pointer-events: all; }
.modal { background: white; border-radius: var(--radius-xl); max-width: 480px; width: 100%; max-height: 90vh; overflow-y: auto; transform: scale(0.95); transition: transform var(--transition-base); }
.modal-backdrop.active .modal { transform: scale(1); }
.modal-header { padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-size: var(--font-size-lg); font-weight: 700; }
.modal-close { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--color-muted); cursor: pointer; transition: background var(--transition-fast); font-size: 20px; }
.modal-close:hover { background: var(--color-bg-light); color: var(--color-title); }
.modal-body { padding: var(--space-6); }
.modal-footer { padding: var(--space-4) var(--space-6); border-top: 1px solid var(--color-border); display: flex; gap: var(--space-3); justify-content: flex-end; }

/* ===== PAGINATION ===== */
.pagination { display: flex; align-items: center; justify-content: center; gap: var(--space-2); margin-top: var(--space-10); }
.page-btn { width: 36px; height: 36px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: var(--font-size-sm); font-weight: 500; border: 1.5px solid var(--color-border); color: var(--color-body); cursor: pointer; transition: all var(--transition-fast); background: white; }
.page-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: white; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== ORDER STATUS ===== */
.status-badge { display: inline-flex; align-items: center; gap: 4px; padding: 4px 10px; border-radius: var(--radius-full); font-size: var(--font-size-xs); font-weight: 600; }
.status-pending { background: #FEF3C7; color: #92400E; }
.status-paid { background: #DBEAFE; color: #1E40AF; }
.status-shipped { background: #EDE9FE; color: #5B21B6; }
.status-delivered { background: #D1FAE5; color: #065F46; }
.status-completed { background: #D1FAE5; color: #065F46; }
.status-cancelled { background: #F3F4F6; color: var(--color-muted); }

/* ===== INFO LIST ===== */
.info-list { display: flex; flex-direction: column; gap: var(--space-3); }
.info-item { display: flex; gap: var(--space-3); font-size: var(--font-size-sm); }
.info-label { color: var(--color-muted); min-width: 80px; flex-shrink: 0; }
.info-value { color: var(--color-title); font-weight: 500; }

/* ===== SPEC TABLE ===== */
.spec-table { width: 100%; border-collapse: collapse; font-size: var(--font-size-sm); }
.spec-table tr:nth-child(even) { background: var(--color-bg-light); }
.spec-table td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-border-light); }
.spec-table td:first-child { color: var(--color-muted); width: 120px; }
.spec-table td:last-child { color: var(--color-title); font-weight: 500; }

/* ===== NOTICE BOX ===== */
.notice { padding: var(--space-4); border-radius: var(--radius-md); font-size: var(--font-size-sm); display: flex; gap: var(--space-3); align-items: flex-start; }
.notice-info { background: #EFF6FF; color: #1E40AF; border-left: 3px solid var(--color-info); }
.notice-warning { background: #FFFBEB; color: #92400E; border-left: 3px solid var(--color-warning); }
.notice-success { background: #F0FDF4; color: #065F46; border-left: 3px solid var(--color-success); }
.notice-error { background: #FEF2F2; color: #991B1B; border-left: 3px solid var(--color-error); }