/* ============================================================
   案例库 — Apple 毛玻璃拟态视觉风格
   ============================================================ */

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

:root{
  /* 苹果核心色系 */
  --bg: #f5f5f7;
  --surface: rgba(255,255,255,0.68);
  --surface-hover: rgba(255,255,255,0.85);
  --glass-border: rgba(255,255,255,0.5);
  --glass-edge: rgba(255,255,255,0.9);

  --primary: #0071e3;
  --primary-hover: #0077ed;
  --primary-light: rgba(0,113,227,0.08);
  --blue: #0071e3;
  --green: #34c759;
  --orange: #ff9500;
  --red: #ff3b30;

  --text: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #aeaeb2;
  --separator: rgba(60,60,67,0.08);
  --separator-thick: rgba(60,60,67,0.15);

  --radius-sm: 10px;
  --radius: 14px;
  --radius-lg: 18px;
  --radius-xl: 22px;
  --radius-full: 9999px;

  --shadow-card: 0 2px 12px rgba(0,0,0,0.04), 0 0 0 0.5px rgba(0,0,0,0.02);
  --shadow-card-hover: 0 4px 20px rgba(0,0,0,0.06), 0 0 0 0.5px rgba(0,0,0,0.03);
  --shadow-glass: 0 2px 24px rgba(0,0,0,0.04), 0 0 0 0.5px rgba(0,0,0,0.02);
  --shadow-elevated: 0 8px 40px rgba(0,0,0,0.08), 0 0 0 0.5px rgba(0,0,0,0.03);

  --sidebar-w: 180px;
  --header-h: 40px;

  --blur-bg: 24px;
  --blur-card: 12px;
}

html{font-size:15px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{
  font-family:-apple-system,"SF Pro Display","SF Pro Text","Helvetica Neue",system-ui,sans-serif;
  color:var(--text);background:var(--bg);overflow:hidden;height:100vh;line-height:1.47059;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-hover)}
button{cursor:pointer;font-family:inherit;font-size:inherit;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:inherit;outline:none}
::selection{background:var(--primary-light);color:var(--primary)}
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--text-tertiary);border-radius:3px}

/* ========== Toast ========== */
.toast{
  position:fixed;top:14px;left:50%;transform:translateX(-50%) translateY(-4px);
  background:var(--surface);backdrop-filter:blur(var(--blur-card));-webkit-backdrop-filter:blur(var(--blur-card));
  border:0.5px solid var(--glass-border);color:var(--text);
  padding:8px 22px;border-radius:var(--radius-full);font-size:.85rem;
  z-index:9999;opacity:0;transition:all .35s cubic-bezier(.22,1,.36,1);
  pointer-events:none;box-shadow:var(--shadow-glass);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.success{color:var(--green);border-color:rgba(52,199,89,0.2);background:rgba(255,255,255,0.75)}
.toast.error{color:var(--red);border-color:rgba(255,59,48,0.2);background:rgba(255,255,255,0.75)}

/* ========== Top Bar ========== */
.top-bar{
  height:var(--header-h);display:flex;align-items:center;justify-content:space-between;
  padding:0 18px;background:var(--surface);backdrop-filter:blur(var(--blur-bg));-webkit-backdrop-filter:blur(var(--blur-bg));
  border-bottom:0.5px solid var(--separator);font-size:.85rem;position:relative;z-index:10;
}
.top-bar .logo-link{
  font-size:.95rem;font-weight:600;color:var(--text);letter-spacing:-0.01em;
  display:flex;align-items:center;gap:6px;
}
.top-bar .logo-link:hover{color:var(--text)}
.top-bar a:not(.logo-link){color:var(--text-secondary);font-size:.82rem;font-weight:500;transition:color .15s}
.top-bar a:not(.logo-link):hover{color:var(--primary)}

/* ========== Main Layout ========== */
.main-layout{display:flex;height:calc(100vh - var(--header-h));position:relative}

/* ========== Sidebar ========== */
.sidebar{
  width:var(--sidebar-w);flex-shrink:0;
  background:var(--surface);backdrop-filter:blur(var(--blur-bg));-webkit-backdrop-filter:blur(var(--blur-bg));
  border-right:0.5px solid var(--separator);
  display:flex;flex-direction:column;overflow-y:auto;position:relative;z-index:5;
}
.sidebar-nav{padding:10px 8px;flex:1}
.cat-item{
  display:flex;align-items:center;gap:8px;
  padding:9px 12px;border-radius:var(--radius-sm);margin-bottom:2px;
  font-size:.84rem;color:var(--text-secondary);font-weight:500;
  transition:all .15s cubic-bezier(.22,1,.36,1);
}
.cat-item:hover{background:rgba(0,0,0,0.035);color:var(--text)}
.cat-item.active{
  background:var(--primary-light);color:var(--primary);font-weight:600;
}
.sidebar-admin{padding:8px}
.sidebar-admin hr{border:none;border-top:0.5px solid var(--separator);margin:4px 0 10px}

/* ========== Content Area ========== */
.content-area{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0}

/* ========== Toolbar ========== */
.toolbar{
  padding:14px 18px 10px;display:flex;flex-direction:column;gap:10px;
}
.toolbar-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.search-wrap{position:relative;flex:1;min-width:180px;max-width:340px}
.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);font-size:.82rem;pointer-events:none;transition:color .2s}
.search-wrap .search-input{
  width:100%;padding:9px 12px 9px 34px;border:none;border-radius:var(--radius-full);
  background:rgba(120,120,128,0.08);font-size:.85rem;color:var(--text);
  transition:all .2s cubic-bezier(.22,1,.36,1);
}
.search-wrap .search-input::placeholder{color:var(--text-tertiary)}
.search-wrap .search-input:focus{background:var(--surface);box-shadow:0 0 0 0.5px var(--primary),0 2px 8px rgba(0,113,227,0.1)}

.filter-label{font-size:.78rem;color:var(--text-tertiary);font-weight:500;letter-spacing:0.02em;margin-right:2px}
.filter-group{display:flex;gap:4px;flex-wrap:wrap}
.filter-btn{
  padding:5px 14px;border:none;border-radius:var(--radius-full);
  background:rgba(120,120,128,0.08);color:var(--text-secondary);
  font-size:.78rem;font-weight:500;transition:all .2s cubic-bezier(.22,1,.36,1);
}
.filter-btn:hover{background:rgba(120,120,128,0.14);color:var(--text)}
.filter-btn.active{background:var(--primary);color:#fff}
.result-count{font-size:.82rem;color:var(--text-tertiary);font-weight:500;margin-left:auto;white-space:nowrap}

/* ========== Card Grid ========== */
.card-grid{
  flex:1;display:grid;
  grid-template-columns:repeat(auto-fill,minmax(420px,1fr));
  gap:18px;padding:6px 18px 18px;overflow-y:auto;align-content:start;
}

/* ========== Card (Frosted Glass) ========== */
.case-card{
  background:var(--surface);backdrop-filter:blur(var(--blur-card));-webkit-backdrop-filter:blur(var(--blur-card));
  border:0.5px solid var(--glass-border);border-radius:var(--radius-xl);
  overflow:hidden;transition:all .25s cubic-bezier(.22,1,.36,1);
  cursor:pointer;display:flex;flex-direction:column;
  box-shadow:var(--shadow-card);
  position:relative;
}
.case-card::after{
  content:'';position:absolute;inset:0;border-radius:var(--radius-xl);
  pointer-events:none;
  box-shadow:inset 0 0 0 0.5px rgba(255,255,255,0.5);
}
.case-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-card-hover);
  background:var(--surface-hover);
}

/* Card Image Area */
.case-card-img{
  width:100%;height:220px;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(120,120,128,0.04),rgba(120,120,128,0.08));
  background-size:cover;background-position:center;
  display:flex;align-items:center;justify-content:center;
}
.card-img-overlay{
  position:absolute;top:0;left:0;right:0;display:flex;justify-content:space-between;
  padding:10px;pointer-events:none;
}
.card-issue-badge{
  font-size:.7rem;font-weight:600;padding:3px 12px;border-radius:var(--radius-full);
  background:rgba(0,0,0,0.45);color:#fff;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  letter-spacing:0.01em;height:fit-content;
}
.case-card-img .placeholder-icon{font-size:2.8rem;opacity:0.3;transition:opacity .3s}
.case-card:hover .placeholder-icon{opacity:0.5}
.case-card-img .qc-badge{
  position:absolute;top:10px;right:10px;font-size:.68rem;font-weight:600;
  padding:3px 12px;border-radius:var(--radius-full);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  letter-spacing:0.01em;
}
.qc-badge.qc-现象值{
  background:rgba(255,149,0,0.12);color:var(--orange);
  border:0.5px solid rgba(255,149,0,0.2);
}
.qc-badge.qc-有效质检{
  background:rgba(52,199,89,0.12);color:var(--green);
  border:0.5px solid rgba(52,199,89,0.2);
}

/* Card Body */
.case-card-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.case-card-category{
  display:inline-block;font-size:.72rem;font-weight:600;color:var(--primary);
  background:var(--primary-light);padding:3px 12px;border-radius:var(--radius-full);
  width:fit-content;letter-spacing:0.01em;
}
.case-card-title{font-size:1.1rem;font-weight:700;color:var(--text);line-height:1.35;margin:8px 0 6px;letter-spacing:-0.01em}
.case-card-summary{font-size:.88rem;color:var(--text-secondary);line-height:1.55;flex:1;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-weight:400;margin-bottom:6px}
.card-disposal{
  font-size:.82rem;font-weight:600;color:var(--text);line-height:1.5;
  background:rgba(120,120,128,0.035);padding:8px 12px;border-radius:var(--radius-sm);
  margin-bottom:8px;border-left:2.5px solid var(--primary);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.case-card-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}
.case-card-tag{font-size:.68rem;font-weight:500;color:var(--text-tertiary);background:rgba(120,120,128,0.06);padding:3px 10px;border-radius:var(--radius-full);letter-spacing:0.01em}
.case-card-footer{
  display:flex;justify-content:space-between;align-items:center;
  margin-top:10px;padding-top:10px;border-top:0.5px solid var(--separator);
  font-size:.75rem;color:var(--text-tertiary);font-weight:500;
}

/* ========== Loading & Empty ========== */
.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:100px 0;flex:1}
.spinner{width:22px;height:22px;border:2px solid var(--separator-thick);border-top-color:var(--primary);border-radius:50%;animation:spin .7s cubic-bezier(.4,0,.2,1) infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.loading p{margin-top:10px;font-size:.85rem;color:var(--text-tertiary)}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:100px 0;flex:1;color:var(--text-tertiary)}
.empty-state .icon{font-size:3rem;opacity:0.5;margin-bottom:8px}
.empty-state p{font-size:.9rem;font-weight:500}

/* ========== Modal ========== */
.modal-overlay{
  display:none;position:fixed;z-index:1000;
  top:0;left:0;right:0;bottom:0;
  background:rgba(0,0,0,0.12);align-items:center;justify-content:center;
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
}
.modal-overlay.show{display:flex}
.modal-box{
  background:var(--surface);backdrop-filter:blur(var(--blur-bg));-webkit-backdrop-filter:blur(var(--blur-bg));
  border:0.5px solid var(--glass-border);border-radius:var(--radius-xl);
  padding:28px;max-width:720px;width:92%;max-height:88vh;overflow-y:auto;
  box-shadow:var(--shadow-elevated);position:relative;
}
.modal-box::after{
  content:'';position:absolute;inset:0;border-radius:var(--radius-xl);
  pointer-events:none;
  box-shadow:inset 0 0 0 0.5px rgba(255,255,255,0.5);
}
.modal-close-btn{
  position:absolute;top:12px;right:12px;width:30px;height:30px;
  border-radius:50%;background:rgba(120,120,128,0.08);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-secondary);font-size:1.2rem;transition:all .15s;z-index:2;
}
.modal-close-btn:hover{background:rgba(120,120,128,0.16);color:var(--text)}

/* ========== Detail ========== */
.detail-title{font-size:1.35rem;font-weight:700;margin-bottom:6px;letter-spacing:-0.02em;color:var(--text);line-height:1.35}
.detail-meta{font-size:.82rem;color:var(--text-secondary);margin-bottom:12px;display:flex;flex-wrap:wrap;gap:8px}
.detail-meta .meta-badge{
  display:inline-flex;align-items:center;gap:4px;
  font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:var(--radius-full);
  background:rgba(120,120,128,0.06);color:var(--text-secondary);
}
.detail-meta .meta-badge.primary{background:var(--primary-light);color:var(--primary)}
.detail-tags{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:12px}
.detail-tag{font-size:.7rem;font-weight:500;color:var(--text-tertiary);background:rgba(120,120,128,0.06);padding:2px 10px;border-radius:var(--radius-full)}
.detail-content{font-size:.88rem;line-height:1.7;color:var(--text)}
.detail-content h2{font-size:1.05rem;font-weight:700;margin:1.2em 0 .4em;letter-spacing:-0.01em}
.detail-content h3{font-size:.95rem;font-weight:600;margin:1em 0 .3em}
.detail-content p{margin-bottom:.6em}
.detail-content ul,.detail-content ol{padding-left:1.3em;margin-bottom:.6em}
.detail-content li{margin-bottom:.15em}
.detail-content img{max-width:100%;border-radius:var(--radius);margin:.5em 0;box-shadow:var(--shadow-card)}
.detail-content code{background:rgba(120,120,128,0.08);padding:1px 6px;border-radius:5px;font-size:.85em;color:var(--text)}
.detail-content pre code{display:block;padding:16px;background:rgba(0,0,0,0.03);border-radius:var(--radius)}
.detail-content blockquote{
  border-left:3px solid var(--primary);padding:10px 16px;margin:.6em 0;
  background:rgba(120,120,128,0.03);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-secondary);
}
.detail-actions{margin-top:18px;display:flex;gap:8px}

/* ========== Editor ========== */
.editor-row{margin-bottom:16px}
.editor-row label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:4px;letter-spacing:0.01em}
.editor-row input,.editor-row select,.editor-row textarea{
  width:100%;padding:9px 12px;border:none;border-radius:var(--radius-sm);
  background:rgba(120,120,128,0.06);font-size:.88rem;color:var(--text);transition:all .2s;
}
.editor-row input:focus,.editor-row select:focus,.editor-row textarea:focus{
  box-shadow:0 0 0 0.5px var(--primary),0 2px 8px rgba(0,113,227,0.08);
}
.editor-row input::placeholder{color:var(--text-tertiary)}
.editor-row select{cursor:pointer;appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%2386868b' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:32px}
.editor-row .row-inline{display:flex;gap:10px;flex-wrap:wrap}
.editor-row .row-inline>*{flex:1;min-width:130px}
#editor-container{min-height:180px;border-radius:0 0 var(--radius-sm) var(--radius-sm);background:rgba(255,255,255,0.5)}
.ql-toolbar{
  border-radius:var(--radius-sm) var(--radius-sm) 0 0 !important;
  background:rgba(120,120,128,0.035) !important;
  border:none !important;border-bottom:0.5px solid var(--separator) !important;
  padding:8px 10px !important;
}
.ql-container{border:none !important;font-size:.88rem !important;font-family:inherit !important}
.ql-editor{padding:14px !important}
.ql-editor.ql-blank::before{color:var(--text-tertiary) !important;font-style:normal !important}

/* ========== Login Form ========== */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.8rem;font-weight:600;color:var(--text-secondary);margin-bottom:4px}
.form-group input{width:100%;padding:9px 12px;border:none;border-radius:var(--radius-sm);background:rgba(120,120,128,0.06);font-size:.9rem;color:var(--text);transition:all .2s}
.form-group input:focus{box-shadow:0 0 0 0.5px var(--primary),0 2px 8px rgba(0,113,227,0.08)}

/* ========== Buttons ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 18px;border:none;border-radius:var(--radius-full);
  font-size:.84rem;font-weight:600;letter-spacing:0.01em;
  transition:all .2s cubic-bezier(.22,1,.36,1);
  cursor:pointer;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-0.5px);box-shadow:0 2px 10px rgba(0,113,227,0.2)}
.btn-primary:active{transform:translateY(0);opacity:.9}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{transform:translateY(-0.5px);box-shadow:0 2px 10px rgba(255,59,48,0.2)}
.btn-outline{
  background:rgba(120,120,128,0.06);color:var(--text-secondary);
  transition:all .2s;
}
.btn-outline:hover{background:rgba(120,120,128,0.12);color:var(--text)}
.btn-sm{padding:6px 14px;font-size:.78rem}
.btn-block{width:100%}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}

/* ========== Responsive ========== */
@media(max-width:960px){
  :root{--sidebar-w:150px}
  .card-grid{grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:14px;padding:6px 14px 14px}
  .case-card-img{height:180px}
}
@media(max-width:640px){
  .main-layout{flex-direction:column}
  .sidebar{
    width:100%;height:auto;border-right:none;border-bottom:0.5px solid var(--separator);
    flex-direction:row;overflow-x:auto;padding:0;backdrop-filter:blur(var(--blur-bg));
  }
  .sidebar-nav{display:flex;gap:2px;padding:8px 12px;flex-wrap:nowrap}
  .cat-item{white-space:nowrap;font-size:.78rem;padding:7px 10px;flex-shrink:0}
  .sidebar-admin{display:none!important}
  .toolbar{padding:10px 14px 8px}
  .search-wrap{max-width:none}
  .card-grid{grid-template-columns:1fr;padding:6px 12px 14px}
  .case-card-img{height:200px}
}