:root {
    --accent: #78588d;
    --accent-hover: #6a4a7a;
    --accent-light: #f5f0f8;
    --accent-shadow: rgba(120, 88, 141, 0.3);
    --accent-shadow-hover: rgba(120, 88, 141, 0.4);
    --accent-shadow-strong: rgba(120, 88, 141, 0.5);
    --accent-gradient: linear-gradient(135deg, #78588d 0%, #6a4a7a 100%);
    --accent-gradient-hover: linear-gradient(135deg, #6a4a7a 0%, #5a3a6a 100%);
    --nav-hover-color: #e9e9e9;
    --nav-active-bg: transparent;
    --size-btn-active-bg: #78588d;
    --size-btn-active-color: #fff;
    --size-btn-active-border: #78588d;
    --frame-tab-active-color: #111827;
    --frame-tab-active-border: #111827;
    --frame-option-active-border: #111827;
    --login-overlay-bg: rgba(0,0,0,0.4);
    --login-box-border: 1px solid #eaecef;
    --login-box-shadow: 0 25px 50px -12px rgba(0,0,0,0.15);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; overflow: hidden; font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif; }

.icon-nav {
    width: 72px;
    min-width: 72px;
    background: #1e293b;
    display: flex;
    flex-direction: column;
    padding: 0;
    border-right: 1px solid #334155;
    overflow-y: auto;
}

.icon-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 14px 6px;
    font-size: 10px;
    line-height: 14px;
    color: #a0a0a0;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 2.5px solid transparent;
    position: relative;
    text-align: center;
    word-break: break-all;
}

.icon-nav-item:hover { color: var(--nav-hover-color); background: var(--nav-active-bg); }

.icon-nav-item.active {
    color: #ededed;
    border-left-color: var(--accent);
    font-weight: 600;
    background: var(--nav-active-bg);
}

.icon-nav-item svg { width: 20px; height: 20px; }

.color-swatch {
    width: 44px; height: 44px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
}
.color-swatch:hover { transform: scale(1.1); }
.color-swatch.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }

.theme-preview-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-start;
}

.theme-preview {
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    flex-shrink: 0;
}

.theme-preview:hover { transform: translateY(-2px); }

.theme-preview .theme-preview-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
    margin: 0 auto 6px;
}

.theme-preview:hover .theme-preview-circle { border-color: #c4a6d5; }

.theme-preview.active .theme-preview-circle {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent);
}

.theme-preview .theme-preview-circle .circle-preview {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.theme-preview .theme-preview-name {
    font-size: 11px;
    font-weight: 500;
    color: #6b7280;
    transition: color 0.2s ease;
    line-height: 1.3;
}

.theme-preview.active .theme-preview-name {
    color: var(--accent);
    font-weight: 600;
}

.theme-preview .theme-preview-badge {
    display: inline-block;
    background: #2d3748;
    color: #fff;
    font-size: 9px;
    font-weight: 600;
    padding: 1px 6px;
    border-radius: 8px;
    margin-top: 2px;
    letter-spacing: 0.3px;
}

.toggle-switch {
    position: relative;
    width: 44px; height: 24px;
    background: #d1d5db;
    border-radius: 12px;
    cursor: pointer;
    transition: background 0.3s;
    flex-shrink: 0;
}
.toggle-switch.on { background: var(--accent); }
.toggle-switch .thumb {
    position: absolute;
    top: 2px; left: 2px;
    width: 20px; height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.3s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch.on .thumb { transform: translateX(20px); }

.control-panel { scrollbar-width: thin; scrollbar-color: var(--accent) transparent; }
.control-panel::-webkit-scrollbar { width: 6px; }
.control-panel::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 3px; }
.control-panel::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
.control-panel::-webkit-scrollbar-thumb:hover { background: var(--accent-hover); }

.badge-new {
    display: inline-block;
    background: #c4b5d9;
    color: #fff;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 8px;
    font-weight: 600;
    vertical-align: middle;
}

.size-btn.active {
    background: var(--size-btn-active-bg) !important;
    color: var(--size-btn-active-color) !important;
    border-color: var(--size-btn-active-border) !important;
}
.size-btn.active .badge-new { background: #fff; color: var(--accent); }

.frame-tab.active { color: var(--frame-tab-active-color); border-bottom-color: var(--frame-tab-active-border); }

.frame-option.active { border-color: var(--frame-option-active-border) !important; }
.frame-option:hover { border-color: #9ca3af; }

.tab-size-layout { overflow: hidden; padding: 0; display: flex; flex-direction: column; height: 100%; }
.tab-size-layout.hidden { display: none !important; }
.tab-size-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 18px 16px;
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) transparent;
}
.tab-size-scroll::-webkit-scrollbar { width: 6px; }
.tab-size-scroll::-webkit-scrollbar-track { background: #f1f1f1; border-radius: 3px; }
.tab-size-scroll::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }
.tab-size-scroll::-webkit-scrollbar-thumb:hover { background: var(--accent-hover); }
.tab-size-scroll::-webkit-scrollbar-button:single-button {
    display: block;
    height: 12px;
    width: 100%;
}
.tab-size-scroll::-webkit-scrollbar-button:single-button:vertical-decrement {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M5 0L10 6H0z' fill='%2378588d'/%3E%3C/svg%3E") no-repeat center center;
}
.tab-size-scroll::-webkit-scrollbar-button:single-button:vertical-increment {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M5 6L0 0h10z' fill='%2378588d'/%3E%3C/svg%3E") no-repeat center center;
}
.tab-size-scroll::-webkit-scrollbar-button:single-button:hover:vertical-decrement {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M5 0L10 6H0z' fill='%236a4a7a'/%3E%3C/svg%3E") no-repeat center center;
}
.tab-size-scroll::-webkit-scrollbar-button:single-button:hover:vertical-increment {
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M5 6L0 0h10z' fill='%236a4a7a'/%3E%3C/svg%3E") no-repeat center center;
}
.tab-size-footer {
    padding: 12px 16px 18px;
    border-top: 1px solid #e5e7eb;
    background: #fff;
    flex-shrink: 0;
}
.price-display-container { text-align: center; margin-bottom: 8px; }

.control-panel.has-tab-size-active { overflow: hidden; height: 100%; }

.frame-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    transition: all 0.3s ease;
}
.frame-wrapper.frame-none { border: none; padding: 0; background: transparent; }

.frame-wrapper.frame-light-wood,
.frame-wrapper.frame-black-wood,
.frame-wrapper.frame-white-wood {
    border: 8px solid var(--wood-border, #c9a96e) !important;
    padding: 4px;
    background: var(--wood-border, #c9a96e);
}
.frame-wrapper.frame-light-wood { --wood-border: #c9a96e; box-shadow: inset 0 0 0 1px #d4b87a, inset 0 0 15px 4px rgba(0,0,0,0.25), 0 4px 12px rgba(0,0,0,0.2); }
.frame-wrapper.frame-black-wood { --wood-border: #1a1a1a; box-shadow: inset 0 0 0 1px #333, inset 0 0 15px 4px rgba(0,0,0,0.5), 0 4px 12px rgba(0,0,0,0.3); }
.frame-wrapper.frame-white-wood { --wood-border: #f5f5f0; box-shadow: inset 0 0 0 1px #e0e0db, inset 0 0 15px 4px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.1); }

.frame-wrapper.frame-metal,
.frame-wrapper.frame-silver-metal,
.frame-wrapper.frame-rose-gold {
    border: 5px solid var(--metal-border, #000) !important;
    padding: 1px;
    box-shadow: inset 0 0 0 1px var(--metal-inset, #3e3e3e), inset 0 0 12px 3px rgba(0,0,0,0.3), 0 4px 12px rgba(0,0,0,0.25);
}
.frame-wrapper.frame-metal { --metal-border: #000; --metal-inset: #3e3e3e; background: linear-gradient(135deg, #666, #444, #666); }
.frame-wrapper.frame-silver-metal { --metal-border: #b0b0b0; --metal-inset: #999; background: linear-gradient(135deg, #e8e8e8, #c0c0c0, #d8d8d8, #a8a8a8); }
.frame-wrapper.frame-rose-gold { --metal-border: #c4956a; --metal-inset: #b8845c; background: linear-gradient(135deg, #f0d5b8, #d4a574, #e8c8a0, #b8845c); }

.frame-wrapper.frame-new-1,
.frame-wrapper.frame-new-2 {
    border: 5px solid var(--polymer-border, #5a8) !important;
    padding: 1px;
    box-shadow: inset 0 0 0 1px var(--polymer-inset, #497), 0 4px 12px rgba(0,0,0,0.25);
}
.frame-wrapper.frame-new-1 { --polymer-border: #e8e8e8; --polymer-inset: #ccc; background: linear-gradient(135deg, #f5f5f5, #e8e8e8, #f0f0f0); }
.frame-wrapper.frame-new-2 { --polymer-border: #222; --polymer-inset: #444; background: linear-gradient(135deg, #333, #222, #333); }

.frame-wrapper.frame-white-hanger,
.frame-wrapper.frame-dark-hanger,
.frame-wrapper.frame-wood-hanger {
    border: none !important; padding: 0; background: transparent; box-shadow: none; overflow: visible;
}
.frame-wrapper.frame-white-hanger::before,
.frame-wrapper.frame-white-hanger::after,
.frame-wrapper.frame-dark-hanger::before,
.frame-wrapper.frame-dark-hanger::after,
.frame-wrapper.frame-wood-hanger::before,
.frame-wrapper.frame-wood-hanger::after {
    content: ''; position: absolute;
    left: var(--hanger-lr, -5px); right: var(--hanger-lr, -5px);
    height: var(--hanger-h, 14px);
    background: var(--hanger-bg, #f5f5f0);
    border: 1px solid var(--hanger-border, #e0e0db);
    z-index: 5;
}
.frame-wrapper.frame-white-hanger::before,
.frame-wrapper.frame-dark-hanger::before,
.frame-wrapper.frame-wood-hanger::before { top: var(--hanger-top, -15px); border-bottom: none; }
.frame-wrapper.frame-white-hanger::after,
.frame-wrapper.frame-dark-hanger::after,
.frame-wrapper.frame-wood-hanger::after { bottom: var(--hanger-bottom, -15px); border-top: none; }

.frame-wrapper.frame-white-hanger { --hanger-bg: #f5f5f0; --hanger-border: #e0e0db; --hanger-lr: -5px; --hanger-h: 14px; --hanger-top: -15px; --hanger-bottom: -15px; }
.frame-wrapper.frame-dark-hanger { --hanger-bg: #2c1810; --hanger-border: #1a0f08; --hanger-lr: -3px; --hanger-h: 12px; --hanger-top: -12px; --hanger-bottom: -12px; }
.frame-wrapper.frame-dark-hanger::after { z-index: 100; }
/* 原木色挂架 - 上下边高度独立 */
.frame-wrapper.frame-wood-hanger::before,
.frame-wrapper.frame-wood-hanger::after {
    background: url('images/wood-texture.svg') repeat-x center / 100px auto, #c9a96e;
}
.frame-wrapper.frame-wood-hanger::before { height: var(--hanger-top-h, 12px); top: var(--hanger-top, -15px); border-bottom: none; border-radius: 3px 3px 0 0; }
.frame-wrapper.frame-wood-hanger::after { height: var(--hanger-bottom-h, 12px); bottom: var(--hanger-bottom, -13px); border-top: none; border-radius: 0 0 3px 3px; z-index: 100; }

.add-to-cart-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    padding: 14px 24px;
    background: var(--accent-gradient);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--accent-shadow);
    margin-top: 16px;
}
.add-to-cart-btn:hover {
    background: var(--accent-gradient-hover);
    box-shadow: 0 6px 16px var(--accent-shadow-hover);
    transform: translateY(-1px);
}
.add-to-cart-btn:active { transform: translateY(0); }
.add-to-cart-btn .cart-icon { display: flex; align-items: center; }
.add-to-cart-btn .price-display { display: flex; flex-direction: column; align-items: flex-start; }
.add-to-cart-btn .price-main { font-size: 18px; font-weight: 700; }
.add-to-cart-btn .price-label { font-size: 11px; opacity: 0.8; font-weight: 400; }

.floating-cart-btn {
    position: fixed; bottom: 24px; right: 24px;
    width: 56px; height: 56px;
    background: var(--accent-gradient);
    color: #fff; border: none; border-radius: 50%;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 16px var(--accent-shadow-hover);
    transition: all 0.3s ease; z-index: 999;
}
.floating-cart-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px var(--accent-shadow-strong);
}
.cart-badge {
    position: absolute; top: -4px; right: -4px;
    min-width: 20px; height: 20px;
    background: #ef4444; color: #fff; border-radius: 10px;
    font-size: 11px; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    padding: 0 6px;
}

.cart-modal {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    z-index: 1000; display: none;
    align-items: flex-end; justify-content: flex-end;
}
.cart-modal.active { display: flex; }
.cart-modal-overlay {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}
.cart-modal-content {
    position: relative; width: 450px; max-width: 100%; height: 100%;
    background: #fff; display: flex; flex-direction: column;
    animation: slideInRight 0.3s ease;
}
@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}
.cart-modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; border-bottom: 1px solid #e5e7eb;
}
.cart-modal-header h3 {
    font-size: 18px; font-weight: 600; color: #111827; margin: 0;
}
.cart-modal-close {
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    background: #f3f4f6; border: none; border-radius: 50%;
    cursor: pointer; color: #374151; transition: all 0.2s;
}
.cart-modal-close:hover { background: #e5e7eb; color: #111827; }
.cart-body { flex: 1; overflow-y: auto; overflow-x: hidden; }
.cart-items { padding: 16px 24px; }
.cart-item {
    display: flex; align-items: center; gap: 16px;
    padding: 16px 0; border-bottom: 1px solid #f3f4f6;
}
.cart-item:last-child { border-bottom: none; }
.cart-item-preview { flex-shrink: 0; }
.cart-item-info { flex: 1; min-width: 0; }
.cart-item-title { font-size: 14px; font-weight: 600; color: #111827; margin-bottom: 4px; }
.cart-item-specs {
    font-size: 12px; color: #6b7280; margin-bottom: 6px;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cart-item-price { font-size: 15px; font-weight: 600; color: var(--accent); }
.cart-item-actions { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.cart-qty-select {
    padding: 6px 10px; border: 1px solid #e5e7eb; border-radius: 6px;
    font-size: 13px; color: #374151; background: #fff; cursor: pointer;
}
.cart-qty-select:focus { outline: none; border-color: var(--accent); }
.cart-remove-btn {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    background: transparent; border: none; cursor: pointer;
    color: #9ca3af; border-radius: 6px; transition: all 0.2s;
}
.cart-remove-btn:hover { background: #fee2e2; color: #ef4444; }
.cart-modal-footer {
    padding: 20px 24px; border-top: 1px solid #e5e7eb; background: #f9fafb;
}
.cart-total {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 16px;
}
.cart-total span:first-child { font-size: 14px; color: #374151; }
.cart-total span:last-child { font-size: 20px; font-weight: 700; color: #111827; }
.btn-checkout {
    width: 100%; padding: 14px 24px;
    background: var(--accent-gradient);
    color: #fff; border: none; border-radius: 8px;
    font-size: 15px; font-weight: 600; cursor: pointer;
    transition: all 0.3s ease;
}
.btn-checkout:hover { background: var(--accent-gradient-hover); }

.cart-breakdown { padding: 16px 24px; border-top: 1px solid #f3f4f6; background: #fafafa; }
.cart-breakdown-section { margin-bottom: 12px; }
.cart-breakdown-label { font-size: 12px; color: #6b7280; margin-bottom: 4px; font-weight: 500; }
.cart-breakdown-select { width: 100%; padding: 8px 12px; border: 1px solid #e5e7eb; border-radius: 6px; font-size: 13px; color: #374151; background: #fff; cursor: pointer; outline: none; }
.cart-breakdown-select:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(120,88,141,0.15); }
.cart-coupon-row { display: flex; gap: 8px; }
.cart-coupon-input { flex: 1; padding: 8px 12px; border: 1px solid #e5e7eb; border-radius: 6px; font-size: 13px; outline: none; }
.cart-coupon-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(120,88,141,0.15); }
.cart-coupon-btn { padding: 8px 16px; background: var(--accent); color: #fff; border: none; border-radius: 6px; font-size: 13px; font-weight: 500; cursor: pointer; white-space: nowrap; }
.cart-coupon-btn:hover { background: var(--accent-hover); }
.cart-coupon-remove { background: #ef4444; }
.cart-coupon-remove:hover { background: #dc2626; }
.cart-coupon-msg { font-size: 12px; margin-top: 4px; min-height: 16px; }
.cart-coupon-success { color: #059669; }
.cart-coupon-error { color: #ef4444; }
.cart-price-breakdown { margin-top: 12px; padding-top: 12px; border-top: 1px dashed #e5e7eb; }
.cart-price-row { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; font-size: 13px; color: #374151; }
.cart-price-discount { color: #059669; }
.cart-price-saved { color: #ef4444; font-weight: 600; }

.cart-empty { text-align: center; padding: 40px 20px; color: #6b7280; }
.cart-empty svg { width: 64px; height: 64px; margin: 0 auto 16px; opacity: 0.5; }
.cart-empty-title { font-size: 16px; margin-bottom: 8px; }
.cart-empty-sub { font-size: 13px; }
.cart-thumb {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, #f0f2f5, #e8eaef);
    border-radius: 6px; display: flex; align-items: center; justify-content: center;
    font-size: 10px; color: #666;
}

.wish-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    border: 1px solid #e0e0e0;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
    white-space: nowrap;
}
.wish-btn:hover { border-color: var(--accent); color: var(--accent); }
.wish-btn.active { background: var(--accent); color: white; border-color: var(--accent); }

.spinner {
    border: 3px solid rgba(0,0,0,0.1);
    width: 24px; height: 24px;
    border-radius: 50%;
    border-left-color: var(--accent);
    animation: spin 0.8s linear infinite;
    margin: 10px auto;
}
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

.result-item:hover { background: #f3f4f6; }

input[type="color"] {
    -webkit-appearance: none;
    border: 1px solid #e0e0e0;
    padding: 0;
    border-radius: 50%;
    width: 40px; height: 40px;
    cursor: pointer;
    overflow: hidden;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; margin: 0; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 50%; }

.gradient-overlay {
    background: linear-gradient(to top, rgba(0,0,0,1) 0%, rgba(0,0,0,0.7) 40%, rgba(0,0,0,0) 100%);
}

@media (max-width: 1024px) {
    .icon-nav { display: none !important; }
    .desktop-only { display: none !important; }
    .sidebar-panel { width: 100% !important; min-width: 100% !important; }
}

.login-modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--login-overlay-bg);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.login-modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}
.login-modal-box {
    background: #fff;
    border: var(--login-box-border);
    border-radius: 16px;
    box-shadow: var(--login-box-shadow);
    max-width: 400px;
    width: 90%;
    padding: 32px;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}
.login-modal-overlay.active .login-modal-box {
    transform: scale(1);
}