/* 图匠 · 在线图片处理 —— 样式表 */

:root{
  --bg:#f5f7fb;
  --bg-grad-1:#eef1ff;
  --bg-grad-2:#f5f7fb;
  --elev:#ffffff;
  --elev-soft:#f7f9fd;
  --ink:#141824;
  --ink-soft:#555f74;
  --ink-mute:#8a93a6;
  --line:#e4e8f1;
  --line-strong:#d3d9e8;
  --brand:#4f46e5;
  --brand-2:#0ea5e9;
  --brand-ink:#ffffff;
  --brand-soft:#ecebff;
  --ok:#15803d;
  --warn:#b45309;
  --shadow-lg:0 30px 70px -40px rgba(20,24,36,.45);
  --shadow-sm:0 2px 8px -4px rgba(20,24,36,.24);
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --max:1180px;
  --checker:#f0f2f7;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b0f1a;
    --bg-grad-1:#121a2e;
    --bg-grad-2:#0b0f1a;
    --elev:#131a2a;
    --elev-soft:#18202f;
    --ink:#e9edf7;
    --ink-soft:#a8b2c6;
    --ink-mute:#7c879c;
    --line:#243049;
    --line-strong:#2f3d59;
    --brand:#7c83ff;
    --brand-2:#38bdf8;
    --brand-ink:#0b0f1a;
    --brand-soft:#1d2444;
    --ok:#4ade80;
    --warn:#fbbf24;
    --shadow-lg:0 30px 70px -40px rgba(0,0,0,.85);
    --shadow-sm:0 2px 10px -4px rgba(0,0,0,.6);
    --checker:#1a2337;
  }
}

*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none !important}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit}
img{max-width:100%}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 24px}

/* ---------- 顶栏 ---------- */
.topbar{
  position:sticky;top:0;z-index:40;
  background:color-mix(in srgb, var(--elev) 82%, transparent);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(180%) blur(14px);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700}
.brand:hover{text-decoration:none}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-size:17px;font-weight:700;letter-spacing:0;
  box-shadow:0 6px 14px -8px rgba(79,70,229,.9);
}
.brand-name{font-size:17px;font-weight:700;letter-spacing:.01em}
.topnav{display:flex;align-items:center;gap:26px;font-size:14.5px}
.topnav a{color:var(--ink-soft)}
.topnav a:hover{color:var(--brand);text-decoration:none}
.topnav .nav-cta{
  color:var(--brand-ink);background:var(--brand);
  padding:8px 16px;border-radius:999px;font-weight:600;font-size:14px;
}
.topnav .nav-cta:hover{filter:brightness(1.08);text-decoration:none}

/* ---------- 首屏 ---------- */
.hero{
  background:
    radial-gradient(120% 90% at 88% -10%, color-mix(in srgb, var(--brand) 16%, transparent) 0%, transparent 62%),
    radial-gradient(90% 70% at 6% 0%, color-mix(in srgb, var(--brand-2) 14%, transparent) 0%, transparent 58%),
    linear-gradient(180deg,var(--bg-grad-1) 0%, var(--bg-grad-2) 100%);
  padding:46px 0 36px;
  border-bottom:1px solid var(--line);
}
.hero-inner{display:flex;flex-direction:column;align-items:flex-start;gap:18px;max-width:820px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand);background:var(--brand-soft);
  padding:6px 12px;border-radius:999px;
}
.hero h1{font-size:clamp(30px,4.6vw,48px);letter-spacing:-.025em;line-height:1.2}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(100deg,var(--brand),var(--brand-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .lead{font-size:16.5px;color:var(--ink-soft);max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 22px;border-radius:var(--r-sm);border:1px solid var(--line-strong);
  background:var(--elev);color:var(--ink);font-size:15px;font-weight:600;
  cursor:pointer;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease,background .16s ease;
  text-decoration:none;
}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-sm);text-decoration:none}
.btn:active{transform:translateY(0)}
.btn.primary{
  background:linear-gradient(120deg,var(--brand),color-mix(in srgb,var(--brand) 62%, var(--brand-2)));
  border-color:transparent;color:#fff;
  box-shadow:0 14px 26px -18px color-mix(in srgb,var(--brand) 90%, transparent);
}
.btn.primary:hover{filter:brightness(1.07)}
.btn.ghost{background:transparent}
.btn.small{padding:8px 14px;font-size:13.5px;border-radius:9px}
.btn.block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none;box-shadow:none}
.link-btn{
  border:0;background:none;padding:0;color:var(--ink-mute);
  font-size:13px;cursor:pointer;
}
.link-btn:hover{color:var(--brand);text-decoration:underline}

/* ---------- 工作区 ---------- */
.workspace{padding:34px 0 12px}
.app-panel{
  background:var(--elev);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-lg);padding:20px;
}

/* 上传区 */
.dropzone{
  border:1.5px dashed var(--line-strong);border-radius:var(--r-md);
  background:var(--elev-soft);
  padding:56px 24px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:10px;
  cursor:pointer;transition:border-color .18s ease,background .18s ease;
}
.dropzone:hover,.dropzone:focus-visible,.dropzone.dragover{
  border-color:var(--brand);
  background:color-mix(in srgb, var(--brand-soft) 55%, var(--elev-soft));
}
.dz-icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);margin-bottom:4px;
}
.dz-icon svg{width:28px;height:28px}
.dropzone h2{font-size:19px}
.dropzone p{color:var(--ink-soft);font-size:14px;max-width:520px}
.dropzone .btn{margin-top:10px}
.dz-tip{font-size:12.5px;color:var(--ink-mute)}

/* 编辑器三栏 */
.editor{display:grid;grid-template-columns:236px minmax(0,1fr) 344px;gap:18px;align-items:start}
.editor[hidden]{display:none}

/* 文件列表 */
.filebar{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--elev-soft);padding:12px;min-width:0;
}
.filebar-head{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-soft);padding:2px 4px 10px;
}
.filebar-head b{color:var(--brand);font-weight:700}
.filelist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;max-height:520px;overflow:auto}
.file-item{
  position:relative;display:flex;align-items:center;gap:10px;
  padding:8px;border-radius:var(--r-sm);border:1px solid transparent;
  background:var(--elev);cursor:pointer;transition:border-color .15s ease,background .15s ease;
}
.file-item:hover{border-color:var(--line-strong)}
.file-item.active{border-color:var(--brand);background:color-mix(in srgb,var(--brand-soft) 45%, var(--elev))}
.file-item img{
  width:44px;height:44px;object-fit:cover;border-radius:8px;
  background:var(--checker);flex:none;
}
.fi-meta{min-width:0;flex:1}
.fi-name{
  display:block;font-size:12.5px;font-weight:600;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;
}
.fi-sub{display:block;font-size:11.5px;color:var(--ink-mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fi-del{
  flex:none;width:22px;height:22px;border-radius:6px;border:0;
  background:transparent;color:var(--ink-mute);font-size:16px;line-height:1;cursor:pointer;
}
.fi-del:hover{background:var(--line);color:var(--ink)}
.add-more{
  width:100%;margin-top:10px;padding:9px;border-radius:9px;
  border:1px dashed var(--line-strong);background:transparent;color:var(--ink-soft);
  font-size:13px;cursor:pointer;
}
.add-more:hover{border-color:var(--brand);color:var(--brand)}

/* 预览舞台 */
.stage{min-width:0;display:flex;flex-direction:column;gap:10px}
.stage-toolbar{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--ink-mute);padding:0 2px;
}
.stage-toolbar .stage-dim{color:var(--ink-soft);font-variant-numeric:tabular-nums}
.stage-toolbar .stage-size{font-variant-numeric:tabular-nums}
.stage-canvas-wrap{
  border:1px solid var(--line);border-radius:var(--r-md);
  background:
    repeating-conic-gradient(var(--checker) 0% 25%, transparent 0% 50%) 0 0/18px 18px,
    var(--elev-soft);
  padding:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:320px;gap:10px;
}
#previewCanvas{
  max-width:100%;max-height:60vh;width:auto;height:auto;
  border-radius:6px;box-shadow:0 10px 30px -18px rgba(0,0,0,.5);
  touch-action:none;display:block;
}
#previewCanvas.crop-mode{cursor:crosshair}
.stage-empty{color:var(--ink-mute);font-size:14px}
.stage-hint{font-size:12.5px;color:var(--ink-mute);text-align:center}

/* 工具区 */
.tools{border:1px solid var(--line);border-radius:var(--r-md);background:var(--elev-soft);padding:12px;display:flex;flex-direction:column;gap:14px}
.tool-tabs{
  display:grid;grid-template-columns:repeat(3,1fr);gap:4px;
  background:var(--elev);border:1px solid var(--line);border-radius:11px;padding:4px;
}
.tool-tabs button{
  border:0;background:transparent;padding:8px 4px;border-radius:8px;
  font-size:13px;color:var(--ink-soft);cursor:pointer;white-space:nowrap;
}
.tool-tabs button:hover{color:var(--ink)}
.tool-tabs button.active{background:var(--brand);color:#fff;font-weight:600}
.tool-panel{display:none;flex-direction:column;gap:14px}
.tool-panel.active{display:flex}
.field{display:flex;flex-direction:column;gap:7px}
.field > label{font-size:12.5px;font-weight:600;color:var(--ink-soft);display:flex;justify-content:space-between;align-items:center;gap:8px}
.field .val{font-weight:600;color:var(--brand);font-variant-numeric:tabular-nums}
input[type="number"],input[type="text"]{
  width:100%;padding:9px 11px;border-radius:9px;border:1px solid var(--line-strong);
  background:var(--elev);color:var(--ink);font-size:13.5px;font-family:inherit;
}
input[type="number"]:focus,input[type="text"]:focus{border-color:var(--brand);outline:none}
input[type="range"]{width:100%;accent-color:var(--brand);height:22px}
input[type="color"]{
  width:100%;height:36px;border:1px solid var(--line-strong);border-radius:9px;
  background:var(--elev);padding:3px;cursor:pointer;
}
.segmented{display:flex;flex-wrap:wrap;gap:6px}
.segmented button,.chips button{
  border:1px solid var(--line-strong);background:var(--elev);color:var(--ink-soft);
  padding:6px 12px;border-radius:999px;font-size:12.5px;cursor:pointer;transition:.15s;
}
.segmented button:hover,.chips button:hover{border-color:var(--brand);color:var(--brand)}
.segmented button.active,.chips button.active{
  background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;
}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.pos-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;max-width:150px}
.pos-grid button{
  aspect-ratio:1.55;border:1px solid var(--line-strong);border-radius:6px;
  background:var(--elev);cursor:pointer;position:relative;padding:0;
}
.pos-grid button::after{content:"";position:absolute;width:7px;height:7px;border-radius:2px;background:var(--line-strong)}
.pos-grid button.active{border-color:var(--brand);background:var(--brand-soft)}
.pos-grid button.active::after{background:var(--brand)}
.pos-grid button[data-pos="tl"]::after{top:4px;left:4px}
.pos-grid button[data-pos="tc"]::after{top:4px;left:50%;transform:translateX(-50%)}
.pos-grid button[data-pos="tr"]::after{top:4px;right:4px}
.pos-grid button[data-pos="ml"]::after{top:50%;left:4px;transform:translateY(-50%)}
.pos-grid button[data-pos="mc"]::after{top:50%;left:50%;transform:translate(-50%,-50%)}
.pos-grid button[data-pos="mr"]::after{top:50%;right:4px;transform:translateY(-50%)}
.pos-grid button[data-pos="bl"]::after{bottom:4px;left:4px}
.pos-grid button[data-pos="bc"]::after{bottom:4px;left:50%;transform:translateX(-50%)}
.pos-grid button[data-pos="br"]::after{bottom:4px;right:4px}

.switch{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink);cursor:pointer;user-select:none}
.switch input{accent-color:var(--brand);width:16px;height:16px}
.hint{font-size:11.8px;color:var(--ink-mute);line-height:1.6}

/* 导出区 */
.export{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line);padding-top:14px}
.export .btn{width:100%}
.export-note{font-size:11.8px;color:var(--ink-mute);text-align:center}
.export-note.busy{color:var(--brand)}

/* 导出结果 */
.result{
  display:flex;gap:12px;align-items:center;margin-top:4px;padding:10px;
  border:1px solid var(--line);border-radius:12px;background:var(--elev);
}
.result-info{display:flex;flex-direction:column;gap:6px;min-width:0;flex:1}
.result-head{font-size:12.5px;color:var(--ink-soft);word-break:break-all;line-height:1.45;margin:0}
.result-head b{color:var(--brand);font-weight:600}
.result-links{display:flex;gap:8px}
.result-links .btn{padding:7px 12px;font-size:12.5px}
.result .hint{margin:0;font-size:11.5px}
.result-img{
  flex:none;width:64px;height:64px;object-fit:cover;border-radius:8px;
  background:repeating-conic-gradient(var(--checker) 0% 25%, transparent 0% 50%) 0 0/12px 12px, var(--elev-soft);
}

/* ---------- 通用区块 ---------- */
.section{padding:52px 0}
.section + .section{border-top:1px solid var(--line)}
.section-head{max-width:680px;margin:0 0 34px}
.section-head h2{font-size:clamp(22px,3vw,28px);letter-spacing:-.02em}
.section-head p{margin-top:10px;color:var(--ink-soft);font-size:15px}
.grid-3{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{
  background:var(--elev);border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;transition:transform .18s ease,box-shadow .18s ease;
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.card h3{font-size:16px;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.card p{color:var(--ink-soft);font-size:14px}
.card .ico{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand);font-size:15px;flex:none;
}
.steps{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));counter-reset:step}
.step{
  position:relative;background:var(--elev);border:1px solid var(--line);
  border-radius:var(--r-md);padding:22px 22px 22px 22px;
}
.step .num{
  display:grid;place-items:center;width:28px;height:28px;border-radius:999px;
  background:var(--brand);color:#fff;font-size:13px;font-weight:700;margin-bottom:12px;
}
.step h3{font-size:15.5px;margin-bottom:6px}
.step p{font-size:13.8px;color:var(--ink-soft)}
.privacy-note{
  display:flex;gap:16px;align-items:flex-start;
  background:linear-gradient(120deg,var(--brand-soft),transparent);
  border:1px solid var(--line);border-radius:var(--r-md);padding:24px;
}
.privacy-note .ico{font-size:22px;line-height:1}
.privacy-note h3{font-size:16px;margin-bottom:6px}
.privacy-note p{color:var(--ink-soft);font-size:14px;max-width:760px}
.faq{display:flex;flex-direction:column;gap:10px;max-width:860px}
.faq details{
  background:var(--elev);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 18px;
}
.faq summary{cursor:pointer;font-weight:600;font-size:14.5px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--ink-mute);font-weight:400;font-size:18px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:10px;color:var(--ink-soft);font-size:14px}

/* ---------- 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);background:var(--elev);
  padding:34px 0 40px;
}
.footer-inner{display:flex;flex-direction:column;gap:12px}
.footer-top{display:flex;flex-wrap:wrap;gap:16px 30px;justify-content:space-between;align-items:center}
.footer-links{display:flex;flex-wrap:wrap;gap:18px;font-size:13.5px}
.footer-links a{color:var(--ink-soft)}
.footer-links a:hover{color:var(--brand)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;
  font-size:12.8px;color:var(--ink-mute);
}
.footer-bottom .sep{color:var(--line-strong)}
.footer-bottom a{color:var(--ink-mute)}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;left:50%;bottom:26px;transform:translate(-50%,14px);
  background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:10px;
  font-size:13.5px;box-shadow:0 18px 40px -22px rgba(0,0,0,.7);
  opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;z-index:90;
  max-width:calc(100% - 32px);text-align:center;
}
.toast.show{opacity:1;transform:translate(-50%,0)}
@media (prefers-color-scheme: dark){
  .toast{background:var(--ink);color:#0b0f1a}
}

/* ---------- 首屏补充 ---------- */
.hero-note{font-size:12.8px;color:var(--ink-mute);margin-top:2px}
.btn.big{padding:13px 28px;font-size:16px;border-radius:12px}

/* 保存到相册浮层（长按保存） */
.save-overlay{
  position:fixed;inset:0;z-index:100;padding:16px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(8,11,20,.94);
}
.save-overlay-box{display:flex;flex-direction:column;align-items:center;gap:14px;max-width:100%}
.save-overlay-tip{color:#fff;font-size:14px;text-align:center;margin:0;line-height:1.6}
.save-overlay-tip span{color:rgba(255,255,255,.6);font-size:12px}
#saveOverlayImg{max-width:92vw;max-height:66vh;border-radius:8px;background:#fff;display:block}
.save-overlay .btn{background:rgba(255,255,255,.14);border-color:rgba(255,255,255,.28);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1120px){
  .editor{grid-template-columns:minmax(0,1fr) 336px}
  .filebar{grid-column:1/-1;order:3}
  .filelist{flex-direction:row;overflow-x:auto;max-height:none;padding-bottom:2px}
  .file-item{flex:0 0 auto;min-width:190px}
  .file-item img{width:38px;height:38px}
  .add-more{width:auto;padding:9px 16px;margin-top:8px}
}
@media (max-width:860px){
  .editor{grid-template-columns:1fr}
  .stage{order:1}
  .tools{order:2}
  .filebar{order:3}
  .hero{padding:42px 0 34px}
  .topnav{display:none}
  .app-panel{padding:14px}
  .dropzone{padding:40px 18px}
  #previewCanvas{max-height:52vh}
  .section{padding:48px 0}
  .stage-canvas-wrap{min-height:220px;padding:10px}
  .result-img{width:72px;height:72px}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .tool-tabs{grid-template-columns:repeat(3,1fr)}
  .dropzone h2{font-size:17px}
}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}