/* ── RedNote 下载站 ── */

:root {
  --primary: #1A73E8; --primary-hover: #1557B0; --primary-surface: #E8F0FE;
  --surface: #FFFFFF; --surface-dim: #F8F9FA; --surface-container: #F1F3F4;
  --outline: #DADCE0; --outline-variant: #E8EAED;
  --on-surface: #1F1F1F; --on-surface-variant: #444746; --on-surface-tertiary: #80868B;
  --error: #D93025; --success: #1E8E3E; --warning: #E37400;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04),0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 8px rgba(0,0,0,.04),0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 16px rgba(0,0,0,.06),0 4px 8px rgba(0,0,0,.04);
  --radius-xs: 8px; --radius-sm: 12px; --radius-md: 16px; --radius-lg: 24px; --radius-full: 9999px;
  --nav-height: 48px;
  --font: -apple-system,BlinkMacSystemFont,'SF Pro Display','Segoe UI',Roboto,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font);background:var(--surface-dim);color:var(--on-surface);line-height:1.5;-webkit-font-smoothing:antialiased;padding-top:var(--nav-height)}
a{color:var(--primary);text-decoration:none}

/* Nav */
nav{position:fixed;top:0;left:0;right:0;z-index:99;height:var(--nav-height);background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);display:flex;align-items:center;padding:0 14px;border-bottom:.5px solid rgba(0,0,0,.08)}

/* Hamburger */
.hamburger{display:flex;flex-direction:column;justify-content:center;gap:4px;width:40px;height:40px;padding:8px 7px;background:none;border:none;cursor:pointer;border-radius:50%;transition:background .15s}
.hamburger:hover{background:rgba(0,0,0,.06)}
.h-line{display:block;height:2.5px;background:var(--on-surface);border-radius:2px;transition:all .25s cubic-bezier(.4,0,.2,1);transform-origin:center}
.h-long{width:24px}.h-mid{width:18px}.h-short{width:13px}
.hamburger.active .h-line{width:24px}
.hamburger.active .h-line:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.hamburger.active .h-line:nth-child(2){opacity:0;transform:scaleX(0)}
.hamburger.active .h-line:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* Search btn */
.search-btn{margin-left:auto;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:none;border:none;cursor:pointer;border-radius:50%;color:var(--on-surface)}
.search-btn:hover{background:rgba(0,0,0,.06)}

/* Sidebar */
.sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:199;opacity:0;pointer-events:none;transition:opacity .3s}
.sidebar-overlay.open{opacity:1;pointer-events:auto}
.sidebar{position:fixed;top:0;left:0;bottom:0;width:288px;max-width:85vw;background:var(--surface);z-index:200;transform:translateX(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;box-shadow:var(--shadow-lg);overflow-y:auto}
.sidebar.open{transform:translateX(0)}
.sidebar-top{display:flex;align-items:flex-start;padding:20px 20px 8px;position:relative;border-bottom:1px solid var(--outline-variant)}
.sidebar-profile{display:flex;align-items:center;gap:12px;flex:1}
.sidebar-avatar-img{width:44px;height:44px;border-radius:50%;object-fit:cover;background:var(--primary-surface);flex-shrink:0}
.sidebar-avatar-fallback{width:44px;height:44px;border-radius:50%;background:var(--primary-surface);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.sidebar-profile-info{min-width:0}
.sidebar-profile-name{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sidebar-profile-points{font-size:12px;color:var(--on-surface-tertiary);margin-top:2px}
.sidebar-close{position:absolute;top:16px;right:16px;display:none}
.sidebar-links{flex:1;padding:4px 8px 20px}
.sidebar-link{display:flex;align-items:center;gap:14px;padding:12px 16px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;color:var(--on-surface-variant);transition:all .12s;text-decoration:none;margin-bottom:1px}
.sidebar-link:hover{background:var(--surface-container);color:var(--on-surface)}
.sidebar-link.active{background:var(--primary-surface);color:var(--primary);font-weight:600}
.sidebar-sub.collapsed{max-height:0;opacity:0;overflow:hidden;transition:max-height .3s ease,opacity .2s ease}
.sidebar-sub.expanded{max-height:500px;opacity:1}
.sub-link{padding-left:56px!important;font-size:13px!important;font-weight:400!important}
.sidebar-divider{height:1px;background:var(--outline-variant);margin:8px 16px}
.sidebar-toggle{cursor:pointer;user-select:none;justify-content:space-between}
.toggle-arrow{font-size:10px;transition:transform .25s;display:inline-block;color:var(--on-surface-tertiary)}
.toggle-arrow.expanded{transform:rotate(90deg)}
.toggle-arrow.collapsed{transform:rotate(0deg)}

/* ── Layout ── */
.page{min-height:calc(100vh - var(--nav-height))}
.container{padding:0}

/* ── Home Toolbar ── */
.home-toolbar{padding:10px 14px 8px;display:flex;align-items:center}
.home-toolbar .sort-row{display:flex;gap:8px}

/* Chips */
.chip{padding:5px 16px;border-radius:var(--radius-full);font-size:12px;font-weight:500;cursor:pointer;background:var(--surface);border:1px solid var(--outline-variant);color:var(--on-surface-variant);transition:all .15s;user-select:none;font-family:var(--font)}
.chip:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-surface)}
.chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ── File List (full-width, compact) ── */
.file-grid{padding:0;margin:0}
.file-card{display:flex;align-items:center;gap:14px;padding:16px;background:var(--surface);border-bottom:.5px solid var(--outline-variant);cursor:pointer;transition:background .1s;width:100%}
.file-card:active{background:var(--surface-dim)}
.file-card-icon{width:42px;height:42px;border-radius:10px;flex-shrink:0;background:var(--primary-surface);display:flex;align-items:center;justify-content:center;font-size:20px}
.file-card-info{flex:1;min-width:0}
.file-card-title{font-size:15px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-bottom:6px}
.file-card-meta{display:flex;flex-wrap:wrap;gap:6px 14px;font-size:11px;color:var(--on-surface-tertiary)}
.file-card-arrow{font-size:18px;color:var(--on-surface-tertiary);flex-shrink:0;opacity:.35}

/* ── Search Popup ── */
.search-overlay{position:fixed;inset:0;z-index:160;background:transparent;display:flex;align-items:flex-start;justify-content:center;padding-top:72px;animation:fadeIn .12s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.search-box{width:88%;max-width:440px;background:var(--surface);border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.12);overflow:hidden;animation:slideDown .15s ease}
@keyframes slideDown{from{transform:translateY(-8px);opacity:0}to{transform:translateY(0);opacity:1}}
.search-top-row{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--outline-variant)}
.search-top-row input{flex:1;border:none;background:none;outline:none;font-size:15px;font-family:var(--font);color:var(--on-surface)}
.s-fs-btn{background:none;border:none;cursor:pointer;padding:4px 8px;color:var(--on-surface-tertiary);font-size:12px;border-radius:6px;white-space:nowrap}
.s-fs-btn:hover{background:var(--surface-container)}
.search-results{max-height:350px;overflow-y:auto}
.search-empty{text-align:center;padding:32px 0;color:var(--on-surface-tertiary);font-size:13px}
.search-result-card{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:.5px solid var(--outline-variant);cursor:pointer}
.search-result-card:active{background:var(--surface-dim)}
.fci{width:36px;height:36px;border-radius:8px;flex-shrink:0;background:var(--primary-surface);display:flex;align-items:center;justify-content:center;font-size:18px}

/* Search fullscreen */
.search-fullscreen{position:fixed;inset:0;z-index:161;background:var(--surface);display:flex;flex-direction:column;animation:fadeIn .15s ease}
.s-fs-top{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid var(--outline-variant);flex-shrink:0}
.s-fs-top button{background:none;border:none;cursor:pointer;font-size:14px;padding:4px 8px;color:var(--on-surface-variant)}
.s-fs-field{flex:1;display:flex;align-items:center;gap:6px;background:var(--surface-container);border-radius:20px;padding:8px 14px}
.s-fs-field input{flex:1;border:none;background:none;outline:none;font-size:14px;font-family:var(--font)}
.s-fs-filter-bar{padding:6px 14px;border-bottom:.5px solid var(--outline-variant)}
.s-fs-filter-toggle{display:flex;align-items:center;gap:6px;cursor:pointer;font-size:12px;font-weight:600;color:var(--on-surface-variant);user-select:none;padding:4px 0}
.s-fs-chips{display:flex;flex-wrap:wrap;gap:6px;padding-top:8px}
.sf-chip{padding:4px 14px;border-radius:var(--radius-full);font-size:12px;font-weight:500;cursor:pointer;background:var(--surface);border:1px solid var(--outline-variant);color:var(--on-surface-variant);transition:all .12s}
.sf-chip:hover{border-color:var(--primary);color:var(--primary)}
.sf-chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.s-fs-results{flex:1;overflow-y:auto}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 22px;border-radius:var(--radius-full);font-size:13px;font-weight:500;font-family:var(--font);border:none;cursor:pointer}
.btn:disabled{opacity:.5}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover:not(:disabled){background:var(--primary-hover)}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--outline)}
.btn-outline:hover:not(:disabled){background:var(--primary-surface)}
.btn-danger{background:var(--error);color:#fff}
.btn-danger:hover:not(:disabled){background:#B3261E}
.btn-sm{padding:6px 14px;font-size:12px}
.btn-full{width:100%;padding:14px;justify-content:center;border-radius:var(--radius-sm)}

/* ── Detail ── */
.detail-page{max-width:680px;margin:0 auto;padding:18px 16px 60px}
.file-icon-large{width:60px;height:60px;border-radius:var(--radius-sm);background:var(--primary-surface);display:flex;align-items:center;justify-content:center;font-size:30px;flex-shrink:0}
.meta-row{display:flex;gap:14px;font-size:13px;color:var(--on-surface-tertiary);flex-wrap:wrap;margin-bottom:10px}
.detail-section{background:var(--surface);border-radius:var(--radius-sm);padding:18px;margin-bottom:12px;border:.5px solid rgba(0,0,0,.06)}
.detail-section h3{font-size:14px;font-weight:600;margin-bottom:8px}
.detail-section p{font-size:14px;color:var(--on-surface-variant);line-height:1.7;white-space:pre-wrap}
.comments-section{margin-top:8px}
.comments-section h2{font-size:15px;font-weight:600;margin-bottom:12px}
.comment-item{display:flex;gap:10px;padding:12px 0;border-bottom:.5px solid var(--outline-variant)}
.comment-item:last-child{border-bottom:none}
.cmt-avatar{width:32px;height:32px;border-radius:50%;background:var(--primary-surface);display:flex;align-items:center;justify-content:center;font-size:14px;flex-shrink:0;overflow:hidden}
.cmt-avatar img{width:100%;height:100%;object-fit:cover}
.cmt-body{flex:1;min-width:0}
.cmt-header{display:flex;align-items:center;gap:8px;margin-bottom:2px}
.cmt-author{font-weight:600;font-size:13px}
.cmt-time{font-size:11px;color:var(--on-surface-tertiary)}
.cmt-content{font-size:14px;line-height:1.6;color:var(--on-surface);white-space:pre-wrap}

/* ── Upload ── */
.upload-page{max-width:560px;margin:0 auto;padding:20px 16px 60px;text-align:left}
.upload-page h1{font-size:22px;font-weight:700;margin-bottom:2px}
.upload-page .sub{font-size:13px;color:var(--on-surface-variant);margin-bottom:20px}
.upload-zone{border:1.5px dashed var(--outline);border-radius:var(--radius-sm);padding:40px 20px;text-align:center;cursor:pointer;transition:all .2s;margin-bottom:20px;background:var(--surface)}
.upload-zone:hover{border-color:var(--primary);background:var(--primary-surface)}
.upload-zone .icon{font-size:36px;margin-bottom:6px}
.upload-zone .text{font-size:14px;color:var(--on-surface-variant);font-weight:500}
.upload-zone .hint{font-size:12px;color:var(--on-surface-tertiary);margin-top:4px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:12px;font-weight:500;margin-bottom:4px;color:var(--on-surface-variant)}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 14px;border-radius:var(--radius-xs);border:1px solid var(--outline);font-size:14px;font-family:var(--font);outline:none;background:var(--surface);color:var(--on-surface)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-surface)}
.form-group textarea{min-height:100px;resize:vertical}

/* ── Login ── */
.login-page{min-height:calc(100vh - var(--nav-height));display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{background:var(--surface);border-radius:var(--radius-md);padding:40px 32px;width:100%;max-width:380px;box-shadow:var(--shadow-md);text-align:center}
.login-card h1{font-size:22px;font-weight:700}
.login-card p{color:var(--on-surface-variant);font-size:13px;margin-bottom:20px}
.login-card .form-group{text-align:left}
.login-card .error{color:var(--error);font-size:12px;margin-bottom:12px}
.login-card .hint{font-size:11px;color:var(--on-surface-tertiary);margin-top:12px}

/* ── Points ── */
.points-page{max-width:560px;margin:0 auto;padding:20px 16px 60px;text-align:left}
.points-page h1{font-size:22px;font-weight:700;margin-bottom:14px}
.points-card{background:var(--primary-surface);border-radius:var(--radius-sm);padding:20px;text-align:center;margin-bottom:20px}
.points-card .big-num{font-size:40px;font-weight:700;color:var(--primary)}
.points-card .big-label{font-size:12px;color:var(--on-surface-variant);margin-top:2px}
.signin-btn{margin:12px 0 0}
.points-record{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:var(--surface);border-radius:var(--radius-xs);border:.5px solid var(--outline-variant);margin-bottom:6px}

/* ── Admin ── */
.admin-layout{min-height:calc(100vh - var(--nav-height))}
.admin-content{padding:20px 16px 60px;max-width:var(--max-width);margin:0 auto}
.admin-content h1{font-size:20px;font-weight:700;margin-bottom:16px}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-bottom:24px}
@media(max-width:768px){.stats-grid{grid-template-columns:repeat(2,1fr)}}
.stat-card{background:var(--surface);border-radius:var(--radius-sm);padding:16px;border:.5px solid rgba(0,0,0,.06)}
.stat-card .value{font-size:24px;font-weight:700;color:var(--primary)}
.stat-card .label{font-size:11px;color:var(--on-surface-tertiary);margin-top:2px;text-transform:uppercase;letter-spacing:.5px}
.table-wrap{background:var(--surface);border-radius:var(--radius-sm);border:.5px solid rgba(0,0,0,.06);overflow-x:auto;-webkit-overflow-scrolling:touch}
.table-wrap table{min-width:600px;width:100%;border-collapse:collapse}
th,td{padding:10px 14px;text-align:left;font-size:12px;border-bottom:.5px solid var(--outline-variant);white-space:nowrap}
th{background:var(--surface-container);color:var(--on-surface-tertiary);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--surface-dim)}
.tag{display:inline-flex;padding:2px 10px;border-radius:var(--radius-full);font-size:10px;font-weight:600}
.tag.pending{background:#FEF7E0;color:var(--warning)}
.tag.approved{background:#E6F4EA;color:var(--success)}
.tag.rejected{background:#FCE8E6;color:var(--error)}
.card{background:var(--surface);border-radius:var(--radius-sm);padding:16px;margin-bottom:8px;border:.5px solid rgba(0,0,0,.06)}

/* ── Toast ── */
#toast-container{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:9999;display:flex;flex-direction:column;align-items:center;gap:8px}
.toast{background:#323232;color:#fff;padding:10px 22px;border-radius:var(--radius-full);font-size:13px;font-weight:500;box-shadow:var(--shadow-lg);animation:toastIn .25s ease}
@keyframes toastIn{from{transform:translateY(14px);opacity:0}to{transform:translateY(0);opacity:1}}

/* ── Misc ── */
.loading{display:flex;align-items:center;justify-content:center;padding:36px;color:var(--on-surface-tertiary);font-size:13px}
.spinner{width:18px;height:18px;border:2px solid var(--outline);border-top-color:var(--primary);border-radius:50%;animation:spin .6s linear infinite;margin-right:8px}
@keyframes spin{to{transform:rotate(360deg)}}
.empty{text-align:center;padding:40px 24px;color:var(--on-surface-tertiary)}
.empty .icon{font-size:36px;margin-bottom:8px}
.empty .text{font-size:14px}
.pagination{display:flex;justify-content:center;gap:4px;padding:16px 0}
.pagination button{padding:7px 13px;border:1px solid var(--outline-variant);border-radius:var(--radius-xs);background:var(--surface);cursor:pointer;font-size:12px;font-family:var(--font);color:var(--on-surface)}
.pagination button:hover{background:var(--surface-container)}
.pagination button.active{background:var(--primary);color:#fff;border-color:var(--primary)}

.file-card-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  object-fit: cover; background: var(--surface-container);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; flex-shrink: 0;
}

  font-size: 13px; color: var(--on-surface-variant);
}

/* ── Modals (unlock + download) ── */
.modal-overlay {
  position:fixed;top:0;left:0;width:100%;height:100%;z-index:99999;
  background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn .15s ease;
  padding: 24px;
  overflow: hidden;
}
.modal-dialog {
  background: var(--surface); border-radius: 20px;
  padding: 32px 24px; max-width: 360px; width: 100%;
  text-align: center; box-shadow: var(--shadow-lg);
  animation: slideUp .2s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-icon { font-size: 48px; margin-bottom: 8px; }
.modal-dialog h2 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.modal-info {
  font-size: 11px; color: var(--on-surface-tertiary);
  margin-bottom: 16px; padding: 8px 12px;
  background: var(--surface-container); border-radius: 8px;
  text-align: center; line-height: 1.5;
}
.modal-dialog .btn-full { margin-bottom: 8px; }

/* Download progress overlay */
.dl-progress-box {
  background: var(--surface); border-radius: 20px;
  padding: 36px 32px; text-align: center;
  box-shadow: var(--shadow-lg);
  animation: slideUp .2s ease;
  margin: auto;
}
.dl-spinner {
  width: 40px; height: 40px; border: 3px solid var(--outline);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 16px;
}
.dl-title { font-size: 15px; font-weight: 600; color: var(--on-surface); margin-bottom: 8px; }
.dl-pct { font-size: 32px; font-weight: 700; color: var(--primary); }