:root{--accent: #7C3AED;--accent-light: #9D69F5;--accent-dim: rgba(124, 58, 237, .15);--bg: #f5f4ff;--bg-card: #ffffff;--bg-input: #f0eeff;--border: #e0dcf8;--text: #1a1530;--text-muted: #6b7280;--shadow: 0 2px 16px rgba(124,58,237,.08);--shadow-lg: 0 8px 32px rgba(124,58,237,.14);--sidebar-w: 240px;--banner-h-top: 52px;--banner-h-bot: 64px;--radius: 14px;--radius-sm: 8px;--transition: .2s ease;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif}[data-theme=dark]{--bg: #0f0e17;--bg-card: #1a1830;--bg-input: #221f3a;--border: #2d2950;--text: #e8e4ff;--text-muted: #9590b8;--shadow: 0 2px 16px rgba(0,0,0,.4);--shadow-lg: 0 8px 32px rgba(0,0,0,.6)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-tap-highlight-color:transparent}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;overflow-x:hidden;min-height:100dvh;transition:background var(--transition),color var(--transition)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:99px}::-webkit-scrollbar-thumb:hover{background:var(--accent-light)}.app-shell{display:flex;flex-direction:column;min-height:100dvh}.top-banner{position:fixed;top:0;left:0;right:0;height:var(--banner-h-top);z-index:100;background:var(--bg-card);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:center}.bottom-banner{position:fixed;bottom:0;left:0;right:0;height:var(--banner-h-bot);z-index:100;background:var(--bg-card);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:center}.main-wrapper{display:flex;flex:1;padding-top:var(--banner-h-top);padding-bottom:var(--banner-h-bot)}.sidebar{width:var(--sidebar-w);min-width:var(--sidebar-w);height:calc(100dvh - var(--banner-h-top) - var(--banner-h-bot));position:sticky;top:var(--banner-h-top);overflow-y:auto;background:var(--bg-card);border-right:1px solid var(--border);padding:12px 8px;display:flex;flex-direction:column;gap:4px}.sidebar-group-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);padding:12px 10px 4px}.sidebar-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:var(--radius-sm);cursor:pointer;font-size:14px;font-weight:500;color:var(--text-muted);border:none;background:transparent;width:100%;text-align:left;transition:background var(--transition),color var(--transition)}.sidebar-item:hover{background:var(--accent-dim);color:var(--accent-light)}.sidebar-item.active{background:var(--accent-dim);color:var(--accent);font-weight:600}.sidebar-item .icon{font-size:18px;flex-shrink:0}.main-content{flex:1;padding:24px;overflow-y:auto;max-width:900px}.page-title{font-size:26px;font-weight:800;color:var(--text);margin-bottom:6px}.page-subtitle{font-size:14px;color:var(--text-muted);margin-bottom:28px}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:box-shadow var(--transition)}.card:hover{box-shadow:var(--shadow-lg)}.input-group{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}.input-label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em}.input-field{padding:12px 14px;background:var(--bg-input);border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:18px;font-weight:600;color:var(--text);outline:none;width:100%;transition:border-color var(--transition),box-shadow var(--transition);font-family:var(--font)}.input-field:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.select-field{padding:10px 34px 10px 14px;background:var(--bg-input);border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--text);outline:none;width:100%;cursor:pointer;transition:border-color var(--transition);-webkit-appearance:none;-moz-appearance:none;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='%239590b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;font-family:var(--font)}.select-field:focus{border-color:var(--accent)}.converter-grid{display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:end;margin-bottom:20px}.swap-btn{width:42px;height:42px;border-radius:50%;border:1.5px solid var(--border);background:var(--bg-card);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--accent);transition:background var(--transition),transform var(--transition);margin-bottom:4px;flex-shrink:0}.swap-btn:hover{background:var(--accent-dim);transform:rotate(180deg)}.result-box{background:var(--accent-dim);border:1.5px solid var(--accent);border-radius:var(--radius-sm);padding:16px 20px;display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:8px}.result-value{font-size:24px;font-weight:800;color:var(--accent);word-break:break-all}.copy-btn{padding:8px 16px;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;transition:opacity var(--transition);white-space:nowrap;flex-shrink:0}.copy-btn:hover{opacity:.88}.ref-table{width:100%;border-collapse:collapse;font-size:13px;margin-top:20px}.ref-table th,.ref-table td{padding:8px 12px;border-bottom:1px solid var(--border);text-align:right}.ref-table th{font-weight:700;color:var(--text-muted);text-align:left}.ref-table td:first-child{text-align:left;color:var(--text-muted)}.ref-table tr:last-child td{border-bottom:none}.btn{padding:12px 24px;border-radius:var(--radius-sm);font-size:15px;font-weight:700;cursor:pointer;border:none;transition:opacity var(--transition),transform var(--transition);display:inline-flex;align-items:center;gap:8px;font-family:var(--font)}.btn:active{transform:scale(.97)}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{opacity:.9}.btn-outline{background:transparent;color:var(--accent);border:1.5px solid var(--accent)}.btn-outline:hover{background:var(--accent-dim)}.search-wrapper{position:relative;margin-bottom:24px}.search-input{width:100%;padding:12px 14px 12px 42px;background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius);font-size:15px;color:var(--text);outline:none;transition:border-color var(--transition),box-shadow var(--transition);font-family:var(--font)}.search-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim)}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:16px;pointer-events:none}.ad-slot{display:flex;align-items:center;justify-content:center;gap:10px;font-size:12px;color:var(--text-muted);height:100%;width:100%;max-width:728px;margin:0 auto}.ad-label{font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);border:1px solid var(--border);padding:2px 6px;border-radius:4px;flex-shrink:0}.ad-content{flex:1;height:32px;background:var(--bg-input);border-radius:4px;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:11px;border:1px dashed var(--border);max-width:660px}.interstitial-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000bf;z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.interstitial-card{background:var(--bg-card);border-radius:var(--radius);width:100%;max-width:480px;overflow:hidden;box-shadow:var(--shadow-lg)}.interstitial-header{padding:16px 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border)}.interstitial-header h3{font-size:14px;font-weight:700;color:var(--text)}.countdown-badge{background:var(--accent);color:#fff;border-radius:99px;padding:3px 12px;font-size:13px;font-weight:700;min-width:56px;text-align:center}.interstitial-ad-area{height:250px;background:var(--bg-input);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--text-muted);font-size:13px;border-bottom:1px solid var(--border)}.interstitial-footer{padding:16px 20px;display:flex;justify-content:flex-end}.download-btn{padding:12px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:700;background:var(--accent);color:#fff;border:none;cursor:pointer;transition:opacity var(--transition);display:flex;align-items:center;gap:8px}.download-btn:disabled{opacity:.4;cursor:not-allowed}.download-btn:not(:disabled):hover{opacity:.88}.app-header{position:fixed;top:var(--banner-h-top);left:var(--sidebar-w);right:0;height:56px;background:var(--bg-card);border-bottom:1px solid var(--border);z-index:50;display:flex;align-items:center;padding:0 24px;gap:16px}.brand{font-size:20px;font-weight:800;color:var(--accent);letter-spacing:-.02em;display:flex;align-items:center;gap:6px}.brand-tagline{font-size:11px;color:var(--text-muted);font-weight:400}.theme-toggle{margin-left:auto;width:38px;height:38px;border-radius:50%;border:1.5px solid var(--border);background:var(--bg-input);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:18px;transition:background var(--transition)}.theme-toggle:hover{background:var(--accent-dim)}.mobile-header{display:none;position:fixed;top:var(--banner-h-top);left:0;right:0;height:56px;background:var(--bg-card);border-bottom:1px solid var(--border);z-index:50;align-items:center;padding:0 16px;gap:12px}.hamburger{width:36px;height:36px;border-radius:var(--radius-sm);border:1.5px solid var(--border);background:transparent;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px}.hamburger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--transition)}.mobile-nav-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:200}.mobile-sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;background:var(--bg-card);z-index:201;overflow-y:auto;padding:60px 8px 80px;transform:translate(-100%);transition:transform .3s ease;border-right:1px solid var(--border)}.mobile-sidebar.open{transform:translate(0)}@media (max-width: 768px){:root{--sidebar-w: 0px;--banner-h-top: 52px}.sidebar,.app-header{display:none}.mobile-header{display:flex}.mobile-nav-overlay{display:block}.main-content{padding:80px 16px 16px}.converter-grid{grid-template-columns:1fr;gap:12px}.swap-btn{margin:0 auto;transform:rotate(90deg)}.swap-btn:hover{transform:rotate(90deg) scale(1.1)}.result-box{flex-direction:column;align-items:flex-start}.copy-btn{width:100%;justify-content:center}}.card{overflow:visible}.color-preview{width:100%;height:80px;border-radius:var(--radius-sm);border:1.5px solid var(--border);margin-bottom:16px;transition:background-color .3s}.color-inputs-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:12px}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);padding:40px 24px;text-align:center;cursor:pointer;transition:border-color var(--transition),background var(--transition)}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent);background:var(--accent-dim)}.upload-zone input{display:none}.info-banner{background:var(--accent-dim);border:1.5px solid var(--accent);border-radius:var(--radius-sm);padding:12px 16px;margin-bottom:16px;font-size:13px;display:flex;gap:10px;align-items:flex-start}.image-preview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:12px;margin-top:16px}.image-thumb{border-radius:var(--radius-sm);overflow:hidden;border:1.5px solid var(--border);aspect-ratio:1;background:var(--bg-input);display:flex;align-items:center;justify-content:center}.image-thumb img{width:100%;height:100%;object-fit:cover}.number-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}.currency-flag{font-size:20px;margin-right:6px}.rate-info{font-size:12px;color:var(--text-muted);margin-top:8px}.size-table{width:100%;border-collapse:collapse;font-size:14px}.size-table th{background:var(--accent-dim);color:var(--accent);padding:10px 14px;text-align:center;font-weight:700;font-size:12px;text-transform:uppercase}.size-table td{padding:10px 14px;text-align:center;border-bottom:1px solid var(--border)}.size-table tr:last-child td{border-bottom:none}.size-table tr.highlighted{background:var(--accent-dim)}.size-table tr.highlighted td{color:var(--accent);font-weight:700}.tab-bar{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;margin-bottom:20px;scrollbar-width:none}.tab-bar::-webkit-scrollbar{display:none}.tab-btn{padding:7px 16px;border-radius:99px;border:1.5px solid var(--border);background:transparent;color:var(--text-muted);font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;transition:background var(--transition),color var(--transition),border-color var(--transition);font-family:var(--font)}.tab-btn.active{background:var(--accent);color:#fff;border-color:var(--accent)}.tab-btn:hover:not(.active){background:var(--accent-dim);color:var(--accent);border-color:var(--accent)}.toast{position:fixed;bottom:calc(var(--banner-h-bot) + 16px);left:50%;transform:translate(-50%) translateY(20px);background:var(--accent);color:#fff;padding:10px 20px;border-radius:99px;font-size:14px;font-weight:600;z-index:999;opacity:0;transition:opacity .3s,transform .3s;pointer-events:none}.toast.show{opacity:1;transform:translate(-50%) translateY(0)}.bmi-gauge{width:100%;height:20px;border-radius:99px;background:linear-gradient(to right,#3b82f6,#22c55e 18.5%,#f59e0b 25%,#ef4444 40%,#991b1b);position:relative;margin:16px 0}.bmi-marker{position:absolute;top:-4px;width:8px;height:28px;background:var(--text);border-radius:4px;transform:translate(-50%);transition:left .4s ease}.bmi-gauge{position:relative;height:12px;border-radius:6px;background:linear-gradient(to right,#3b82f6,#22c55e 30%,#f59e0b 55%,#ef4444 75%,#991b1b);margin-bottom:6px}.bmi-marker{position:absolute;top:-4px;width:20px;height:20px;background:var(--bg-card);border:3px solid var(--text);border-radius:50%;transform:translate(-50%);transition:left .3s ease}.size-table{width:100%;border-collapse:collapse;font-size:13px}.size-table th{padding:8px 12px;text-align:left;border-bottom:2px solid var(--border);color:var(--text-muted);font-weight:600;font-size:12px}.size-table td{padding:8px 12px;border-bottom:1px solid var(--border)}.size-table tr.highlighted td,.size-table tr:hover td{background:var(--accent-dim)}.tab-bar{display:flex;gap:4px;margin-bottom:16px;border-bottom:2px solid var(--border)}.tab-btn{padding:8px 16px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;font-size:.9rem;transition:color .2s,border-color .2s}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}