/* ============================================
   图片工具箱 - 毛玻璃高端风格
   ============================================ */

@keyframes fadeInUp { from { opacity:0; transform:translateY(24px) scale(.97); } to { opacity:1; transform:translateY(0) scale(1); } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes float { 0%{transform:translate(0,0) scale(1)} 50%{transform:translate(10px,-18px) scale(1.05)} 100%{transform:translate(0,0) scale(1)} }
@keyframes pulse { 0%,100%{opacity:.6} 50%{opacity:1} }

:root {
    --primary:#6366f1; --primary-light:#e0e7ff; --primary-dark:#4338ca;
    --accent:#06b6d4; --accent-light:#cffafe;
    --bg:#f0f2f8; --card:rgba(255,255,255,.72); --card-solid:#fff;
    --text:#0f172a; --text-light:#475569; --text-muted:#94a3b8;
    --border:rgba(255,255,255,.6); --danger:#ef4444; --success:#10b981;
    --radius:20px; --radius-sm:12px;
    --shadow:0 4px 24px -4px rgba(15,23,42,.07);
    --shadow-lg:0 20px 50px -12px rgba(15,23,42,.12);
    --font:'Inter','PingFang SC','Hiragino Sans GB',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
    --ease:cubic-bezier(.16,1,.3,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5;overflow-x:hidden;position:relative}

/* ========= 背景光晕 ========= */
.bg-glow{position:fixed;border-radius:50%;filter:blur(100px);opacity:.5;z-index:0;pointer-events:none}
.bg-glow-1{width:500px;height:500px;background:radial-gradient(circle,rgba(99,102,241,.18),transparent 70%);top:-120px;left:-100px;animation:float 18s ease-in-out infinite}
.bg-glow-2{width:400px;height:400px;background:radial-gradient(circle,rgba(6,182,212,.14),transparent 70%);top:40%;right:-80px;animation:float 22s ease-in-out infinite reverse}
.bg-glow-3{width:350px;height:350px;background:radial-gradient(circle,rgba(236,72,153,.1),transparent 70%);bottom:-80px;left:30%;animation:float 20s ease-in-out infinite 3s}

/* ========= 顶部栏 ========= */
.topbar{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.6);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);box-shadow:0 4px 30px rgba(0,0,0,.03)}
.topbar-inner{max-width:1100px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;gap:16px}
.back-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;color:var(--text-light);background:rgba(0,0,0,.04);transition:all .3s var(--ease);text-decoration:none;flex-shrink:0}
.back-btn:hover{background:var(--primary-light);color:var(--primary)}
.brand{display:flex;align-items:center;gap:10px}
.brand-icon{font-size:24px}
.brand-text{font-size:18px;font-weight:800;letter-spacing:-.5px;background:linear-gradient(135deg,var(--text) 30%,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}

/* ========= 选项卡 ========= */
.tab-bar{position:sticky;top:64px;z-index:90;background:rgba(255,255,255,.45);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.tab-bar-inner{max-width:1100px;margin:0 auto;padding:12px 24px;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
.tab-bar-inner::-webkit-scrollbar{display:none}
.tab{padding:8px 20px;border:1px solid rgba(0,0,0,.06);border-radius:99px;font-size:13px;font-weight:600;font-family:inherit;background:rgba(255,255,255,.7);color:var(--text-light);cursor:pointer;transition:all .3s var(--ease);white-space:nowrap}
.tab:hover{border-color:var(--primary);color:var(--primary)}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px rgba(99,102,241,.25)}

/* ========= 面板 ========= */
.main-area{max-width:1100px;margin:0 auto;padding:32px 24px 80px;position:relative;z-index:1}
.panel{display:none;animation:fadeInUp .5s var(--ease) both}
.panel.active{display:block}
.panel-card{background:var(--card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:24px;box-shadow:var(--shadow);padding:36px;position:relative;overflow:hidden}
.panel-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:.6}
.panel-title{font-size:24px;font-weight:900;margin-bottom:8px;letter-spacing:-.5px}
.panel-desc{font-size:14px;color:var(--text-muted);margin-bottom:28px;font-weight:500}

/* ========= 拖拽区 ========= */
.drop-zone{border:2px dashed rgba(99,102,241,.25);border-radius:var(--radius);padding:48px 24px;text-align:center;cursor:pointer;transition:all .3s var(--ease);background:rgba(255,255,255,.4);margin-bottom:24px}
.drop-zone:hover,.drop-zone.dragover{border-color:var(--primary);background:var(--primary-light);transform:scale(1.01)}
.drop-icon{font-size:48px;margin-bottom:12px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.06))}
.drop-zone p{font-size:15px;color:var(--text-light);font-weight:600;margin-bottom:6px}
.drop-hint{font-size:12px;color:var(--text-muted);font-weight:500}
.file-label{color:var(--primary);cursor:pointer;font-weight:700;text-decoration:underline;text-underline-offset:3px}

/* ========= 选项行 ========= */
.option-row{display:flex;align-items:center;gap:14px;margin-bottom:16px;flex-wrap:wrap}
.opt-label{font-size:14px;font-weight:700;color:var(--text);min-width:120px;flex-shrink:0}
.range-input{flex:1;max-width:300px;accent-color:var(--primary);cursor:pointer;height:6px}
.range-val{font-size:13px;font-weight:700;color:var(--primary);min-width:48px}
.select-input,.text-input,.num-input{padding:10px 16px;border:1px solid rgba(0,0,0,.08);border-radius:10px;font-size:14px;font-family:inherit;color:var(--text);background:#fff;outline:none;transition:all .2s;min-width:160px}
.select-input:focus,.text-input:focus,.num-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,102,241,.1)}
.num-input{width:120px;min-width:auto}
.color-input{width:44px;height:36px;border:2px solid rgba(0,0,0,.08);border-radius:8px;padding:2px;cursor:pointer;background:#fff}
.checkbox-label{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:600;cursor:pointer}
.checkbox-label input{accent-color:var(--primary);width:16px;height:16px}

/* ========= 按钮 ========= */
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 32px;border:none;border-radius:99px;font-size:15px;font-weight:700;font-family:inherit;color:#fff;background:linear-gradient(135deg,var(--primary),#818cf8);cursor:pointer;box-shadow:0 4px 16px rgba(99,102,241,.3);transition:all .3s var(--ease);white-space:nowrap;margin-top:4px}
.btn-primary:hover{box-shadow:0 6px 24px rgba(99,102,241,.45);transform:translateY(-2px)}
.btn-secondary{padding:9px 22px;border:1px solid rgba(0,0,0,.08);border-radius:99px;font-size:13px;font-weight:700;font-family:inherit;background:#fff;color:var(--text);cursor:pointer;transition:all .3s var(--ease)}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}

/* ========= 结果区域 ========= */
.result-area{margin-top:24px}
.result-item{display:flex;align-items:center;gap:16px;padding:16px 20px;background:#fff;border:1px solid rgba(0,0,0,.05);border-radius:var(--radius-sm);margin-bottom:12px;animation:fadeInUp .4s var(--ease) both;flex-wrap:wrap}
.result-thumb{width:64px;height:64px;border-radius:10px;object-fit:cover;background:#f1f5f9;flex-shrink:0;border:1px solid rgba(0,0,0,.04)}
.result-info{flex:1;min-width:180px}
.result-name{font-size:14px;font-weight:700;word-break:break-all;margin-bottom:4px}
.result-meta{font-size:12px;color:var(--text-muted);font-weight:500;display:flex;gap:16px;flex-wrap:wrap}
.result-saved{color:var(--success);font-weight:700}
.result-actions{display:flex;gap:8px;flex-shrink:0}

.info-tag{display:inline-flex;padding:5px 14px;border-radius:99px;font-size:12px;font-weight:700;background:var(--primary-light);color:var(--primary)}

/* ========= Resize ========= */
.resize-options{margin-top:24px;animation:fadeInUp .4s var(--ease) both}
.resize-preview-wrap{margin-bottom:20px;background:#f8fafc;border-radius:var(--radius-sm);padding:12px;display:flex;justify-content:center;border:1px solid rgba(0,0,0,.04)}
.resize-preview{max-width:100%;max-height:300px;border-radius:8px}
.resize-controls{display:flex;flex-direction:column;gap:14px}
.quick-sizes{display:flex;gap:8px;flex-wrap:wrap}
.quick-btn{padding:6px 16px;border:1px solid rgba(0,0,0,.06);border-radius:99px;font-size:13px;font-weight:600;font-family:inherit;background:#fff;color:var(--text-light);cursor:pointer;transition:all .2s}
.quick-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* ========= Crop ========= */
.crop-ratios{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.ratio-btn{padding:6px 16px;border:1px solid rgba(0,0,0,.06);border-radius:99px;font-size:13px;font-weight:600;font-family:inherit;background:#fff;color:var(--text-light);cursor:pointer;transition:all .2s}
.ratio-btn:hover{border-color:var(--primary);color:var(--primary)}
.ratio-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.crop-canvas-wrap{position:relative;display:inline-block;margin-bottom:16px;background:#f1f5f9;border-radius:var(--radius-sm);overflow:hidden;cursor:crosshair;max-width:100%;line-height:0}
.crop-canvas-wrap canvas{max-width:100%;display:block;border-radius:var(--radius-sm)}
.crop-selection{position:absolute;border:2px solid var(--primary);background:rgba(99,102,241,.08);box-shadow:0 0 0 9999px rgba(0,0,0,.35);pointer-events:none;display:none;z-index:2}

/* ========= Watermark ========= */
.wm-layout{display:flex;gap:28px;margin-top:20px;flex-wrap:wrap}
.wm-preview-wrap{flex:1;min-width:280px;background:#f8fafc;border-radius:var(--radius-sm);padding:12px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(0,0,0,.04)}
.wm-preview-wrap canvas{max-width:100%;max-height:500px;border-radius:8px}
.wm-controls{width:300px;display:flex;flex-direction:column;gap:14px;flex-shrink:0}

/* ========= Base64 ========= */
.b64-tabs{display:flex;gap:8px;margin-bottom:20px}
.b64-tab{padding:8px 20px;border:1px solid rgba(0,0,0,.06);border-radius:99px;font-size:13px;font-weight:600;font-family:inherit;background:rgba(255,255,255,.7);color:var(--text-light);cursor:pointer;transition:all .3s var(--ease)}
.b64-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.b64-textarea{width:100%;min-height:160px;padding:16px;border:1px solid rgba(0,0,0,.06);border-radius:var(--radius-sm);font-size:13px;font-family:'Fira Code',Consolas,monospace;color:var(--text);resize:vertical;outline:none;background:#fafafa;line-height:1.6;transition:all .2s}
.b64-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(99,102,241,.1);background:#fff}
.b64-actions{display:flex;align-items:center;gap:12px;margin-top:12px}
.b64-preview-img{max-width:100%;max-height:400px;border-radius:var(--radius-sm);margin-top:16px;box-shadow:var(--shadow)}

/* ========= Info ========= */
.info-layout{display:flex;gap:28px;margin-top:20px;flex-wrap:wrap;animation:fadeInUp .4s var(--ease) both}
.info-preview-wrap{flex:1;min-width:240px;background:#f8fafc;border-radius:var(--radius-sm);padding:12px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(0,0,0,.04)}
.info-preview-img{max-width:100%;max-height:360px;border-radius:8px}
.info-table-wrap{flex:1;min-width:240px}
.info-table{width:100%;border-collapse:collapse}
.info-table tr{border-bottom:1px solid rgba(0,0,0,.05)}
.info-table td{padding:12px 16px;font-size:14px}
.info-table td:first-child{font-weight:700;color:var(--text);white-space:nowrap;width:120px}
.info-table td:last-child{color:var(--text-light);word-break:break-all}

/* ========= Toast ========= */
.toast{position:fixed;bottom:40px;left:50%;transform:translateX(-50%) translateY(80px);padding:14px 28px;background:var(--text);color:#fff;border-radius:99px;font-size:14px;font-weight:600;box-shadow:0 12px 40px rgba(0,0,0,.2);z-index:999;opacity:0;transition:all .4s var(--ease);pointer-events:none;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ========= 响应式 ========= */
@media(max-width:768px){
    .topbar-inner{padding:0 16px}
    .tab-bar-inner{padding:10px 16px}
    .main-area{padding:20px 16px 60px}
    .panel-card{padding:24px 18px}
    .wm-layout{flex-direction:column}
    .wm-controls{width:100%}
    .info-layout{flex-direction:column}
    .option-row{flex-direction:column;align-items:flex-start;gap:8px}
    .opt-label{min-width:auto}
    .range-input{max-width:100%;width:100%}
}