:root{--bg: #f7f8fb;--surface: #ffffff;--border: #e4e7ee;--text: #1c1f2a;--text-muted: #6b7180;--primary: #4f46e5;--primary-dark: #4338ca;--primary-soft: #eef0ff;--warn: #f59e0b;--ok: #16a34a;--radius: 12px;color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Pretendard,-apple-system,BlinkMacSystemFont,Apple SD Gothic Neo,Segoe UI,Malgun Gothic,sans-serif;-webkit-font-smoothing:antialiased}.app{display:flex;flex-direction:column;min-height:100%}.topbar{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.brand{display:flex;align-items:baseline;gap:8px}.brand-mark{font-size:22px}.brand-name{font-weight:800;font-size:18px;letter-spacing:-.02em}.brand-tag{font-size:12px;color:var(--text-muted)}.tabs{display:flex;gap:4px;background:var(--bg);padding:4px;border-radius:999px}.tab{border:none;background:transparent;padding:8px 16px;border-radius:999px;font-size:14px;font-weight:600;color:var(--text-muted);cursor:pointer}.tab:disabled{cursor:not-allowed;opacity:.5}.tab.active{background:var(--surface);color:var(--primary);box-shadow:0 1px 3px #14142b14}.main{flex:1;width:100%;max-width:1040px;margin:0 auto;padding:32px 20px 64px}.subtitle{color:var(--text-muted);font-size:15px;margin:0 0 20px;line-height:1.6}.dropzone{border:2px dashed var(--border);border-radius:var(--radius);background:var(--surface);padding:48px 24px;text-align:center;cursor:pointer;transition:border-color .15s ease,background .15s ease}.dropzone:hover,.dropzone-over{border-color:var(--primary);background:var(--primary-soft)}.dropzone-icon{font-size:36px;margin-bottom:8px}.dropzone-title{font-size:16px;font-weight:700;margin:0 0 4px}.dropzone-sub{font-size:13px;color:var(--text-muted);margin:0}.alert{margin-top:12px;padding:12px 16px;border-radius:8px;background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;font-size:13px}.options-bar{margin-top:24px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;display:flex;flex-direction:column;gap:14px}.option-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.option-label{font-size:13px;font-weight:700;color:var(--text-muted);width:44px;flex-shrink:0}.chip-group{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.chip{border:1px solid var(--border);background:var(--surface);padding:7px 14px;border-radius:999px;font-size:13px;font-weight:600;cursor:pointer;color:var(--text)}.chip:hover{border-color:var(--primary)}.chip-active{background:var(--primary);border-color:var(--primary);color:#fff}.chip-sub{opacity:.65;font-weight:500;margin-left:2px}.custom-ratio-inputs{display:flex;align-items:center;gap:6px}.custom-ratio-inputs input{width:48px;padding:6px 8px;border:1px solid var(--border);border-radius:6px;font-size:13px}.text-input{flex:1;min-width:220px;padding:8px 12px;border:1px solid var(--border);border-radius:8px;font-size:13px}.thumb-grid{margin-top:20px;display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}.thumb-card{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:box-shadow .15s ease,transform .15s ease}.thumb-card:hover{box-shadow:0 6px 20px #14142b1a;transform:translateY(-2px)}.thumb-img{width:100%;aspect-ratio:1;object-fit:cover;display:block;background:#f0f1f5}.thumb-loading{width:100%;aspect-ratio:1;display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:12px;background:#f0f1f5}.thumb-footer{display:flex;align-items:center;gap:4px;padding:6px 4px 6px 8px}.thumb-name{flex:1;min-width:0;font-size:11px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thumb-download{flex-shrink:0;width:24px;height:24px;border-radius:50%;border:none;background:var(--bg);color:var(--text-muted);font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center}.thumb-download:hover{background:var(--primary-soft);color:var(--primary)}.thumb-remove{position:absolute;top:6px;right:6px;z-index:2;width:22px;height:22px;border-radius:50%;border:none;background:#14142b8c;color:#fff;font-size:14px;line-height:1;cursor:pointer}.thumb-status{position:absolute;top:6px;left:6px;z-index:2;width:22px;height:22px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff}.status-ok{background:var(--ok)}.status-warn{background:var(--warn)}.action-row{margin-top:24px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.count-label{font-size:13px;color:var(--text-muted)}.action-buttons{display:flex;gap:10px}.btn{border:none;border-radius:10px;padding:11px 20px;font-size:14px;font-weight:700;cursor:pointer}.btn.small{padding:6px 12px;font-size:12px;border-radius:8px}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-dark)}.btn.primary:disabled{opacity:.6;cursor:not-allowed}.btn.ghost{background:var(--surface);border:1px solid var(--border);color:var(--text)}.btn.ghost:hover{border-color:var(--primary);color:var(--primary)}.footer{text-align:center;padding:20px;color:var(--text-muted);font-size:12px;border-top:1px solid var(--border)}.footer-links{margin-top:10px;display:flex;justify-content:center;gap:18px;flex-wrap:wrap}.footer-link{color:var(--primary);text-decoration:none;font-weight:600}.footer-link:hover{text-decoration:underline}.footer-link-disabled{color:var(--text-muted);font-weight:500;cursor:default}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f101899;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.modal{background:var(--surface);border-radius:16px;width:100%;max-width:760px;max-height:92vh;overflow:auto;display:flex;flex-direction:column}.modal-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border);font-weight:700;font-size:14px}.modal-close{border:none;background:transparent;font-size:22px;cursor:pointer;color:var(--text-muted);line-height:1}.modal-body{display:flex;align-items:center;justify-content:center;gap:12px;padding:24px;flex:1;min-height:300px}.crop-stage{position:relative;overflow:hidden;border-radius:8px;background:#111;touch-action:none;-webkit-user-select:none;user-select:none}.crop-stage-img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:fill;pointer-events:none}.crop-box{position:absolute;border:2px solid #fff;box-shadow:0 0 0 2000px #00000073;cursor:grab}.crop-box:active{cursor:grabbing}.crop-edge{position:absolute;z-index:2}.crop-edge-top,.crop-edge-bottom{left:0;right:0;height:12px;cursor:ns-resize}.crop-edge-top{top:-6px}.crop-edge-bottom{bottom:-6px}.crop-edge-left,.crop-edge-right{top:0;bottom:0;width:12px;cursor:ew-resize}.crop-edge-left{left:-6px}.crop-edge-right{right:-6px}.crop-edge-top:after,.crop-edge-bottom:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:28px;height:4px;background:#fff;border-radius:2px;box-shadow:0 0 0 1px #00000059}.crop-edge-left:after,.crop-edge-right:after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:4px;height:28px;background:#fff;border-radius:2px;box-shadow:0 0 0 1px #00000059}.nav-arrow{border:none;background:var(--bg);width:36px;height:36px;border-radius:50%;font-size:20px;cursor:pointer;flex-shrink:0;color:var(--text)}.nav-arrow:hover{background:var(--primary-soft);color:var(--primary)}.modal-controls{display:flex;align-items:center;gap:16px;padding:16px 24px 22px;border-top:1px solid var(--border);flex-wrap:wrap}.zoom-control{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-muted);font-weight:600}.zoom-control input[type=range]{width:160px}.modal-hint{font-size:12px;color:var(--text-muted);flex-basis:100%}.ad-slot{margin-top:20px}.result-extras{display:flex;align-items:stretch;gap:12px;margin-top:20px}.result-extras .ad-slot{flex:1;margin-top:0}.sponsor-qr{flex-shrink:0;width:96px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border-radius:10px;padding:8px;text-decoration:none;background:var(--surface);border:1px solid var(--border)}.sponsor-qr img{border-radius:4px}.sponsor-qr p{margin:0;font-size:10px;text-align:center;color:var(--text-muted);line-height:1.3}.sponsor-qr-placeholder{border-style:dashed}.sponsor-qr-mark{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border:1px dashed var(--border);border-radius:6px;font-size:10px;color:var(--text-muted);font-weight:700}.ad-slot-placeholder{border:1px dashed var(--border);border-radius:10px;padding:18px;text-align:center;font-size:12px;color:var(--text-muted);background:var(--bg)}.guide-toc{display:flex;flex-direction:column;gap:6px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 20px;margin-bottom:24px}.guide-toc a{color:var(--primary);text-decoration:none;font-size:14px;font-weight:600}.guide-toc a:hover{text-decoration:underline}.guide-article{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px;scroll-margin-top:90px}.guide-article h2{margin-top:0;font-size:18px}.guide-article p{line-height:1.7;color:var(--text);font-size:14px}.guide-article ul,.guide-article ol{line-height:1.8;font-size:14px;padding-left:20px}.guide-article li{margin-bottom:4px}.guide-article h3{font-size:15px;margin:20px 0 8px}.gif-workspace{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:20px;align-items:start}.gif-preview-col{display:flex;flex-direction:column;gap:14px}.gif-video-preview{width:100%;border-radius:var(--radius);background:#000;max-height:360px}.gif-options-col{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;display:flex;flex-direction:column;gap:14px}.gif-options-col .option-row{gap:10px}.gif-options-col .option-row input[type=range]{flex:1;min-width:100px}.slider-value{font-size:12px;color:var(--text-muted);width:28px;text-align:right}.chip-group.vertical{display:flex;flex-direction:column;gap:8px;width:100%}.mode-chip{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;padding:10px 14px;border-radius:10px;width:100%}.mode-chip-title{font-weight:700}.mode-chip-desc{font-size:11px;opacity:.75;font-weight:500}.mode-chip.chip-active .mode-chip-desc{opacity:.9}.video-position-picker{display:flex;flex-direction:column;gap:6px}.video-position-picker .crop-stage{align-self:center}.estimate-hint{font-size:12px;color:var(--text-muted);margin:0}.btn.wide{width:100%}.trim-range{display:flex;flex-direction:column;gap:8px}.trim-track{position:relative;height:28px;background:var(--bg);border-radius:999px;border:1px solid var(--border);touch-action:none}.trim-selected{position:absolute;top:0;bottom:0;background:var(--primary-soft);border-top:1px solid var(--primary);border-bottom:1px solid var(--primary)}.trim-handle{position:absolute;top:50%;transform:translate(-50%,-50%);width:20px;height:20px;border-radius:50%;background:var(--primary);border:2px solid #fff;box-shadow:0 1px 4px #14142b4d;cursor:grab}.trim-handle:active{cursor:grabbing}.trim-labels{display:flex;justify-content:space-between;font-size:11px;color:var(--text-muted)}.gif-result{margin-top:24px;display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;flex-wrap:wrap}.gif-result-img{max-width:260px;max-height:320px;border-radius:8px;border:1px solid var(--border)}.gif-result-info{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--text-muted)}@media (max-width: 780px){.gif-workspace{grid-template-columns:1fr}}@media (max-width: 640px){.topbar{padding:12px 16px}.main{padding:20px 14px 48px}.modal-body{padding:14px}.option-label{width:auto}}