@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ═══════════════════════════════════════════════════════
   LIGHT MODE — NoteSystem Design System
═══════════════════════════════════════════════════════ */
:root {
  --bg:        #f8fafc;
  --surface:   #ffffff;
  --surface2:  #f1f5f9;
  --surface3:  #e2e8f0;
  --border:    #e2e8f0;
  --accent:    #4f46e5;
  --accent2:   #4338ca;
  --accent-g:  rgba(79, 70, 229, 0.1);
  --teal:      #0284c7;
  --pink:      #db2777;
  --green:     #16a34a;
  --orange:    #ea580c;
  --yellow:    #ca8a04;
  --text:      #475569;
  --text-hi:   #0f172a;
  --muted:     #64748b;
  --danger:    #ef4444;
  --sidebar-w: 240px;
  --topbar-h:  64px;
  --radius:    8px;
  --radius-lg: 12px;
  --shadow:    0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.03);
}

*  { box-sizing:border-box; margin:0; padding:0; }
body { font-family:'Inter',sans-serif; background:var(--bg); color:var(--text); font-size:14px; line-height:1.6; min-height:100vh; }
a  { color:var(--accent); text-decoration:none; transition:color .2s; }
a:hover { color:var(--teal); text-decoration:none; }
svg { display:block; flex-shrink:0; }

/* ─── SHELL ─── */
.app-shell { display:grid; grid-template-columns:var(--sidebar-w) 1fr; grid-template-rows:var(--topbar-h) 1fr; min-height:100vh; }

/* ─── TOPBAR ─── */
.topbar {
  grid-column:1/-1;
  background:var(--surface);
  border-bottom:1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
  padding:0 24px;
  position:sticky; top:0; z-index:300;
  box-shadow:var(--shadow);
}
.topbar-brand {
  font-size:18px; font-weight:700; letter-spacing:-.5px;
  color:var(--text-hi);
  display:flex; align-items:center;
}
.topbar-brand span { color:var(--accent); }
.topbar-right { display:flex; align-items:center; gap:10px; }
.topbar-user { font-size:13px; color:var(--muted); display:flex; align-items:center; gap:8px; }
.topbar-user strong { color:var(--text-hi); font-weight:600; }
.topbar-avatar {
  width:34px; height:34px; border-radius:50%;
  background:linear-gradient(135deg,var(--accent),var(--teal));
  display:flex; align-items:center; justify-content:center;
  font-weight:700; font-size:13px; color:#fff;
}

/* ─── SIDEBAR ─── */
.sidebar {
  background:var(--surface);
  border-right:1px solid var(--border);
  padding:16px 0;
  position:sticky; top:var(--topbar-h);
  height:calc(100vh - var(--topbar-h));
  overflow-y:auto;
  display:flex; flex-direction:column;
}
.nav-label {
  font-size:10px; font-weight:700; color:var(--muted);
  text-transform:uppercase; letter-spacing:1.2px;
  padding:16px 20px 6px;
}
.nav-item { display:flex; align-items:center; gap:12px; padding:10px 12px; margin:2px 12px; border-radius:8px; font-weight:500; color:var(--text); font-size:13.5px; transition:all 0.2s; position:relative; }
.nav-item svg { width:18px; height:18px;  color:var(--muted); opacity:1; transition:transform .2s ease, color .2s ease; }
.nav-item:hover { background:var(--surface2); color:var(--text-hi); }
.nav-item:hover svg { color:var(--teal); transform:scale(1.1); }
.nav-item.active { background:#f1f5f9; color:#4f46e5; font-weight:600; }
.nav-item.active svg { color:var(--accent); }
.nav-divider { border:none; border-top:1px solid var(--border); margin:10px 16px; }
.nav-badge { background:var(--danger); color:#fff; font-size:10px; padding:2px 6px; border-radius:20px; margin-left:auto; font-weight:700; }
.sidebar-cta { padding:12px 16px; margin-top:auto; }

/* ─── MAIN CONTENT ─── */
.main-content { grid-column:2; grid-row:2; flex:1; padding:28px 32px; overflow-x:hidden; min-width:0; }
.public-content { grid-column:1/-1; grid-row:1/-1; padding:0; }

/* ─── PAGE HEADER ─── */
.page-header {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:24px; flex-wrap:wrap; gap:12px;
  padding-bottom:20px; border-bottom:1px solid var(--border);
}
.page-title { font-size:20px; font-weight:700; color:var(--text-hi); line-height:1; }
.page-subtitle { font-size:12px; color:var(--muted); margin-top:5px; }
.breadcrumb { display:flex; align-items:center; gap:6px; font-size:12px; color:var(--muted); margin-bottom:6px; }
.breadcrumb a { color:var(--muted); }
.breadcrumb a:hover { color:var(--accent); }

/* ─── CARDS ─── */
.card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.card-body { padding:20px 24px; }
.card-header {
  padding:14px 24px;
  border-bottom:1px solid var(--border);
  font-size:14px; font-weight:600; color:var(--text-hi);
  display:flex; align-items:center; justify-content:space-between; gap:10px;
}
.card-footer {
  padding:14px 24px;
  border-top:1px solid var(--border);
  background:rgba(0,0,0,.1);
}

/* ─── STAT CARDS ─── */
.stats-row { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px; margin-bottom:24px; }
.stat-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:20px 22px;
  position:relative; overflow:hidden;
  transition:transform .25s,box-shadow .25s;
  box-shadow:var(--shadow);
}
.stat-card:hover { transform:translateY(-3px); box-shadow:var(--shadow-lg); }
.stat-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
}
.stat-card.blue::before   { background:linear-gradient(90deg,var(--accent),var(--teal)); }
.stat-card.green::before  { background:var(--green); }
.stat-card.orange::before { background:var(--orange); }
.stat-card.pink::before   { background:var(--pink); }
.stat-card-top { display:flex; align-items:flex-start; justify-content:space-between; }
.stat-icon { width:44px; height:44px; border-radius:10px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.stat-icon.blue   { background:rgba(108,94,207,.15); color:var(--accent); }
.stat-icon.green  { background:rgba(45,206,137,.15); color:var(--green); }
.stat-icon.orange { background:rgba(251,99,64,.15);  color:var(--orange); }
.stat-icon.pink   { background:rgba(229,50,121,.15); color:var(--pink); }
.stat-icon.teal   { background:rgba(17,180,196,.15); color:var(--teal); }
.stat-value { font-size:28px; font-weight:700; color:var(--text-hi); line-height:1; margin-top:12px; }
.stat-label { font-size:12px; color:var(--muted); margin-top:5px; font-weight:500; }

/* ─── BUTTONS ─── */
.btn {
  display:inline-flex; align-items:center; gap:6px;
  padding:8px 18px; border-radius:var(--radius); font-size:13px;
  font-weight:500; cursor:pointer; border:none;
  transition:all .18s; white-space:nowrap; font-family:inherit; line-height:1;
}
.btn-primary  { background:var(--accent); color:#fff; }
.btn-primary:hover  { background:var(--accent2); box-shadow:0 4px 15px rgba(108,94,207,.4); color:#fff; }
.btn-teal     { background:var(--teal); color:#fff; }
.btn-teal:hover { background:#0fa0b0; color:#fff; }
.btn-danger   { background:var(--danger); color:#fff; }
.btn-danger:hover { background:#d42d4f; color:#fff; }
.btn-success  { background:var(--green); color:#fff; }
.btn-secondary { background:var(--surface2); color:var(--text); border:1px solid var(--border); }
.btn-secondary:hover { background:var(--surface3); color:var(--text-hi); border-color:#555; }
.btn-ghost { background:transparent; color:var(--muted); border:1px solid var(--border); }
.btn-ghost:hover { background:var(--surface2); color:var(--text-hi); }
.btn-sm  { padding:5px 12px; font-size:12px; border-radius:6px; }
.btn-xs  { padding:3px 8px;  font-size:11px; border-radius:5px; }
.btn:disabled { opacity:.4; cursor:not-allowed; }

/* ─── FORMS ─── */
.form-group { margin-bottom:18px; }
.form-label { display:block; font-size:11.5px; font-weight:600; color:var(--muted); margin-bottom:6px; text-transform:uppercase; letter-spacing:.5px; }
.form-control {
  width:100%; padding:12px 16px;
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius); color:var(--text-hi); font-size:13.5px;
  font-family:inherit; transition:border-color .2s,box-shadow .2s; outline:none;
}
.form-control:focus { border-color:var(--accent); box-shadow:0 0 0 3px rgba(92, 78, 229, 0.25); }
.form-control::placeholder { color:#475569; }
textarea.form-control { resize:vertical; min-height:80px; }
select.form-control {
  appearance:none; -webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat:no-repeat; background-position:right 12px center;
  border-radius:var(--radius); border:1px solid var(--border); background-color:var(--surface);
}
.form-hint { font-size:11px; color:var(--muted); margin-top:5px; display:block; }
.form-check { display:flex; align-items:center; gap:10px; }
.form-check input[type=checkbox] {
  width:16px; height:16px; accent-color:var(--accent); cursor:pointer;
  border-radius:4px; border:1px solid var(--border); background:var(--surface);
}
.form-row   { display:grid; gap:14px; }
.form-row-2 { grid-template-columns:1fr 1fr; }
.form-row-3 { grid-template-columns:1fr 1fr 1fr; }

/* ─── ALERTS ─── */
.alert { padding:11px 16px; border-radius:var(--radius); font-size:13px; margin-bottom:16px; display:flex; align-items:flex-start; gap:8px; border-left:4px solid; }
.alert-danger  { background:rgba(245,54,92,.1);  border-color:var(--danger); color:#f87396; }
.alert-success { background:rgba(45,206,137,.1); border-color:var(--green);  color:var(--green); }
.alert-info    { background:rgba(108,94,207,.1); border-color:var(--accent); color:#a89df0; }
.alert-warning { background:rgba(255,214,0,.08); border-color:var(--yellow); color:var(--yellow); }

/* ─── TABLE ─── */
.table-wrap { overflow-x:auto; border-radius:var(--radius-lg); border:1px solid var(--border); box-shadow:var(--shadow); }
table { width:100%; border-collapse:collapse; font-size:13px; }
th {
  background:var(--surface2); padding:10px 16px;
  text-align:left; font-weight:600; font-size:11px;
  color:var(--muted); text-transform:uppercase; letter-spacing:.6px;
  border-bottom:1px solid var(--border); white-space:nowrap;
}
td { padding:12px 16px; border-bottom:1px solid var(--border); vertical-align:middle; color:var(--text); }
tr:last-child td { border-bottom:none; }
tr:hover td { background:rgba(255,255,255,.02); }
tbody tr { transition:background .15s; }

/* ─── BADGE ─── */
.badge { display:inline-flex; align-items:center; padding:3px 8px; border-radius:20px; font-size:10.5px; font-weight:600; letter-spacing:.3px; white-space:nowrap; }
.badge-blue   { background:rgba(108,94,207,.2);  color:#a89df0; }
.badge-green  { background:rgba(45,206,137,.2);  color:var(--green); }
.badge-red    { background:rgba(245,54,92,.2);   color:#f87396; }
.badge-gray   { background:rgba(123,130,168,.15);color:var(--muted); }
.badge-purple { background:rgba(139,92,246,.2);  color:#c4b5fd; }
.badge-orange { background:rgba(251,99,64,.2);   color:#fda080; }
.badge-teal   { background:rgba(17,180,196,.2);  color:var(--teal); }

/* ─── AUTH CARD ─── */
.auth-card {
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:40px;
  box-shadow:var(--shadow-lg);
  position:relative; overflow:hidden;
}
.auth-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
  background:linear-gradient(90deg,var(--accent),var(--teal));
}

/* ─── NOTE CONTENT ─── */
.note-content { font-size:15px; line-height:1.85; color:var(--text); }
.note-content h1 { font-size:20px; margin:18px 0 10px; color:var(--text-hi); }
.note-content h2 { font-size:17px; margin:16px 0 8px;  color:var(--text-hi); }
.note-content h3 { font-size:15px; margin:12px 0 6px;  color:var(--text-hi); }
.note-content p  { margin-bottom:10px; }
.note-content a  { color:var(--teal); word-break:break-all; }
.note-content a:hover { color:var(--accent); }
.note-content ul, .note-content ol { margin:6px 0 6px 22px; }
.note-content li { margin-bottom:4px; }
.note-signature { margin-top:28px; padding-top:14px; border-top:1px solid var(--border); font-size:12px; color:var(--muted); }
.note-glass-container { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); padding:28px 32px; margin-top:20px; box-shadow:var(--shadow); }

/* ─── REPORT ─── */
.report-trigger { display:inline-flex; align-items:center; gap:5px; font-size:12px; color:var(--muted); padding:6px 12px; border-radius:var(--radius); background:var(--surface2); border:1px solid var(--border); cursor:pointer; transition:all .15s; }
.report-trigger:hover { color:var(--danger); border-color:var(--danger); background:rgba(245,54,92,.08); }
@keyframes slideDownModal {
  from { opacity: 0; transform: translateY(-40px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideUpModal {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-40px); }
}
@keyframes fadeInBg {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes fadeOutBg {
  from { opacity: 1; }
  to { opacity: 0; }
}

.report-modal { 
    position:fixed; inset:0; background:rgba(0,0,0,.7); z-index:1500; 
    display:none; align-items:center; justify-content:center; backdrop-filter:blur(6px); 
}
.report-modal.open { 
    display:flex; 
    animation: fadeInBg 0.3s forwards;
}
.report-modal.closing {
    animation: fadeOutBg 0.3s forwards;
}
.report-modal-box { 
    background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); padding:24px; width:420px; max-width:94%; box-shadow:var(--shadow-lg); 
}
.report-modal.open .report-modal-box {
    animation: slideDownModal 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.report-modal.closing .report-modal-box {
    animation: slideUpModal 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ─── DIFF PREVIEW ─── */
.diff-item  { margin-bottom:10px; border-radius:var(--radius); overflow:hidden; border:1px solid var(--border); }
.diff-slug  { font-size:11px; color:var(--muted); padding:5px 12px; background:var(--surface2); border-bottom:1px solid var(--border); }
.diff-old   { background:rgba(245,54,92,.08); border-left:3px solid var(--danger); padding:7px 12px; font-size:12px; font-family:'Consolas',monospace; word-break:break-all; color:#f87396; }
.diff-new   { background:rgba(45,206,137,.08);border-left:3px solid var(--green); padding:7px 12px; font-size:12px; font-family:'Consolas',monospace; word-break:break-all; color:var(--green); }

/* ─── EDITOR ─── */
.editor-wrap { border:1px solid var(--border); border-radius:var(--radius); overflow:hidden; }
.ql-toolbar.ql-snow { background:var(--surface2) !important; border:none !important; border-bottom:1px solid var(--border) !important; padding:8px !important; }
.ql-toolbar .ql-stroke { stroke:var(--muted) !important; }
.ql-toolbar .ql-fill   { fill:var(--muted) !important; }
.ql-toolbar button:hover .ql-stroke,.ql-toolbar .ql-active .ql-stroke { stroke:var(--accent) !important; }
.ql-toolbar button:hover .ql-fill,.ql-toolbar .ql-active .ql-fill     { fill:var(--accent) !important; }
.ql-toolbar .ql-picker-label { color:var(--muted) !important; }
.ql-container.ql-snow { border:none !important; font-family:'Inter',sans-serif !important; }
.ql-editor { min-height:380px !important; color:var(--text) !important; background:var(--surface2) !important; padding:18px 22px !important; font-size:14px !important; }
.ql-editor.ql-blank::before { color:#555a75 !important; }
.ql-snow .ql-picker-options { background:var(--surface) !important; border-color:var(--border) !important; }
.ql-snow .ql-picker-item { color:var(--text) !important; }

/* ─── STICKY BANNER (bottom ad) ─── */
#sticky-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: #111;
  animation: slideUpBanner .4s cubic-bezier(.16,1,.3,1);
}
#sticky-banner img {
  display: block;
  width: 100%;
  max-height: 80px;
  object-fit: contain;
}
#sticky-banner a {
  display: block;
  width: 100%;
  line-height: 0;
}
#sticky-banner-close {
  position: absolute;
  top: -28px;
  right: 6px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(0,0,0,.7);
  color: #fff;
  border: 1px solid rgba(255,255,255,.25);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .2s;
  z-index: 10;
}
#sticky-banner-close:hover {
  background: rgba(220,40,40,.8);
}
@keyframes slideUpBanner {
  from { transform: translateY(100%); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}
@keyframes slideDownOut {
  from { transform: translateY(0);    opacity: 1; }
  to   { transform: translateY(100%); opacity: 0; }
}
/* Chỉ hiện trên mobile */
@media (min-width: 769px) {
  #sticky-banner { display: none !important; }
}

/* ─── SHOPEE ─── */
.shopee-banner { background:linear-gradient(135deg,#ee4d2d,#ff7337); border-radius:var(--radius); padding:12px 18px; display:flex; align-items:center; justify-content:space-between; margin-top:20px; gap:12px; }
.shopee-banner-btn { background:#fff; color:#ee4d2d; padding:7px 18px; border-radius:16px; font-weight:700; font-size:12px; white-space:nowrap; }

/* ─── LANDING ─── */
.hero { text-align:center; padding:80px 20px 60px; }
.hero-title { font-size:44px; font-weight:800; line-height:1.1; background:linear-gradient(135deg,var(--text-hi) 30%,var(--accent)); -webkit-background-clip:text; -webkit-text-fill-color:transparent; margin-bottom:14px; }
.hero-sub { font-size:17px; color:var(--muted); max-width:480px; margin:0 auto 28px; }
.hero-cta { display:flex; gap:10px; justify-content:center; flex-wrap:wrap; }
.features-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px; padding:40px 0; max-width:1000px; margin:0 auto; }
.feature-card { background:var(--surface); border:1px solid var(--border); border-radius:var(--radius-lg); padding:22px; transition:border-color .15s,transform .2s; }
.feature-card:hover { border-color:var(--accent); transform:translateY(-3px); }
.feature-icon { width:40px; height:40px; background:var(--accent-g); border-radius:10px; display:flex; align-items:center; justify-content:center; margin-bottom:12px; color:var(--accent); }
.feature-title { font-weight:600; font-size:14px; margin-bottom:5px; color:var(--text-hi); }
.feature-desc { font-size:12px; color:var(--muted); line-height:1.6; }

/* ─── CHART ─── */
.chart-container { padding:20px; height:260px; position:relative; }

/* ─── UTILS ─── */
.flex        { display:flex; }
.flex-center { display:flex; align-items:center; }
.flex-between{ display:flex; align-items:center; justify-content:space-between; }
.gap-6  { gap:6px; }  .gap-8  { gap:8px; }  .gap-12 { gap:12px; }
.mt-8  { margin-top:8px;   } .mt-12 { margin-top:12px;  } .mt-16 { margin-top:16px;  }
.mt-20 { margin-top:20px;  } .mt-24 { margin-top:24px;  } .mt-32 { margin-top:32px;  }
.mb-8  { margin-bottom:8px;} .mb-12 { margin-bottom:12px;} .mb-16 { margin-bottom:16px;}
.mb-20 { margin-bottom:20px;} .mb-24{ margin-bottom:24px;} .mb-32 { margin-bottom:32px;}
.text-muted  { color:var(--muted); }
.text-sm     { font-size:12px; }
.text-xs     { font-size:11px; }
.text-hi     { color:var(--text-hi); }
.text-right  { text-align:right; }
.text-center { text-align:center; }
.w-full      { width:100%; }
.truncate    { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.divider     { border:none; border-top:1px solid var(--border); margin:16px 0; }
.empty-state { text-align:center; padding:60px 20px; color:var(--muted); }
.empty-icon  { width:52px; height:52px; margin:0 auto 14px; opacity:.25; }
.code-tag    { background:var(--surface2); padding:2px 7px; border-radius:4px; font-family:monospace; font-size:12px; border:1px solid var(--border); color:var(--teal); }
.container   { width:100%; padding:0 24px; }
.container-sm { width:100%; max-width:440px; margin:0 auto; padding:0 20px; }
.view-chip   { display:inline-flex; align-items:center; gap:3px; font-size:11px; color:var(--muted); }

/* ─── ANIMATIONS ─── */
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
@keyframes popIn  { from{transform:scale(.85);opacity:0} to{transform:scale(1);opacity:1} }
@keyframes slideUp   { from{opacity:0;transform:translateY(14px)} to{opacity:1;transform:translateY(0)} }
@keyframes slideDown { from{opacity:0;transform:translateY(-10px)} to{opacity:1;transform:translateY(0)} }
.fade-in   { animation:fadeIn .3s ease; }
.slide-up  { animation:slideUp .4s cubic-bezier(.16,1,.3,1); }
.slide-down{ animation:slideDown .4s cubic-bezier(.16,1,.3,1); }

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width:5px; height:5px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:3px; }

/* ─── TOGGLE BUTTON & DESKTOP COLLAPSE ─── */
#sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
  padding: 0;
}
#sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(92, 78, 229, 0.2);
}
#sidebar-toggle:active {
  transform: scale(0.92);
}

@media (min-width: 901px) {
  .app-shell {
    transition: grid-template-columns 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .app-shell.sidebar-collapsed {
    grid-template-columns: 70px 1fr;
  }
  .sidebar {
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: var(--sidebar-w);
  }
  .sidebar.collapsed {
    width: 70px !important;
  }
  .sidebar.collapsed .nav-label,
  .sidebar.collapsed .nav-item span,
  .sidebar.collapsed .nav-badge,
  .sidebar.collapsed .sidebar-cta span,
  .sidebar.collapsed .nav-divider {
    display: none !important;
  }
  .sidebar.collapsed .nav-item { display:flex; align-items:center; gap:12px; padding:10px 12px; margin:2px 12px; border-radius:8px; font-weight:500; color:var(--text); font-size:13.5px; transition:all 0.2s; position:relative; }
  .sidebar.collapsed .sidebar-cta {
    padding: 12px 8px;
  }
  .sidebar.collapsed .sidebar-cta a {
    padding: 10px 0;
    width: 100%;
    justify-content: center;
  }
}

/* ─── MOBILE ─── */
@media (max-width:900px) {
  .app-shell { grid-template-columns:1fr; }
  .main-content { grid-column: 1 / -1; }
  /* Ẩn hoàn toàn sidebar và nút 3 gạch trên mobile - đã có bottom nav */
  .sidebar { display: none !important; }
  #sidebar-toggle { display: none !important; }
  .sidebar-overlay { display: none !important; }

  .mobile-nav { display:flex !important; }
  .stats-row { grid-template-columns:repeat(2,1fr); gap:16px; }
  .main-content { padding:16px; }
}

@media (max-width:768px) {
  /* Optimize main tables on mobile */
  table th:nth-child(1), table td:nth-child(1), /* Checkbox */
  table th:nth-child(5), table td:nth-child(5)  /* Created At */ {
    display: none !important;
  }
  
  td input[id^="note-url-"] {
    width: 120px !important;
    font-size: 11px !important;
    padding: 4px 8px !important;
  }

  td button[onclick*="copy"] {
    padding: 4px 8px !important;
  }
  
  td .btn-sm {
    padding: 6px !important;
  }
}

@media (max-width:600px) {
  .hero-title { font-size:28px; }
  .stats-row { grid-template-columns: 1fr !important; gap: 14px; }
  .form-row-2,.form-row-3 { grid-template-columns:1fr; }
  .page-header { flex-direction:column; align-items:stretch !important; gap:16px; }
  .page-header .btn { width: 100%; justify-content: center; }
  .topbar-user { display:none; }
}

/* ─── MOBILE NAV ─── */
.mobile-nav {
  display:none; position:fixed; bottom:0; left:0; right:0;
  background:var(--surface); border-top:1px solid var(--border);
  z-index:100; padding:8px 0 max(8px,env(safe-area-inset-bottom));
  justify-content:space-around;
}
.mobile-nav-item { display:flex; flex-direction:column; align-items:center; gap:3px; color:var(--muted); font-size:10px; padding:4px 12px; border-radius:6px; transition:color .15s; }
.mobile-nav-item.active { color:var(--accent); }
.mobile-nav-item svg { width:20px; height:20px; }
@media (max-width:900px) { body { padding-bottom:60px; } }
/* Custom CTA Button for Editor Preview */
.custom-cta-btn {
    display: inline-block;
    background: linear-gradient(135deg, #a855f7 0%, #8b5cf6 100%);
    color: #ffffff !important;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4), inset 0 2px 0 rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
}
.custom-cta-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: all 0.4s ease;
    z-index: -1;
}
.custom-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6), inset 0 2px 0 rgba(255,255,255,0.2);
    color: #ffffff;
}
.custom-cta-btn:hover::before {
    left: 100%;
}

/* Responsive Mobile Adjustments */
@media (max-width: 768px) {
    .dashboard-top-row {
        justify-content: center !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
    }
    .page-header {
        justify-content: center !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
    }
    .pag-container {
        justify-content: center !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
    }
    #pagination-buttons {
        justify-content: center !important;
        width: 100% !important;
    }
    .filter-tabs {
        justify-content: center !important;
        width: 100% !important;
    }
    .search-bar {
        margin: 0 auto !important;
    }
    .list-header {
        text-align: center !important;
        justify-content: center !important;
    }
}

@media (max-width: 768px) {
    .filter-search-container {
        justify-content: center !important;
        flex-direction: column !important;
        align-items: center !important;
    }
    .search-wrapper-desktop {
        width: 100% !important;
        margin-top: 10px !important;
    }
    #stats-summary {
        text-align: center !important;
    }
}

.nav-item.active::before { content:""; position:absolute; left:-12px; top:10%; bottom:10%; width:4px; background:#4f46e5; border-radius:0 4px 4px 0; }

/* ═══════════════════════════════════════════════════════
   DARK MODE
═══════════════════════════════════════════════════════ */
body.dark-mode {
  --bg:        #0f172a;
  --surface:   #1e293b;
  --surface2:  #334155;
  --surface3:  #475569;
  --border:    #475569;
  --text:      #cbd5e1;
  --text-hi:   #f8fafc;
  --muted:     #94a3b8;
  --shadow:    0 4px 6px -1px rgba(0,0,0,0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.5);
}
/* Toggle Switch Styles */
.dm-toggle-wrapper {
    display: inline-flex;
    align-items: center;
}
.dm-checkbox {
    display: none;
}
.dm-label {
    width: 48px;
    height: 24px;
    background-color: var(--surface3);
    border-radius: 24px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.3s;
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
}
.dm-checkbox:checked + .dm-label {
    background-color: var(--accent);
    border-color: var(--accent);
}
.dm-ball {
    width: 18px;
    height: 18px;
    background-color: #fff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 3px;
    transition: transform 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.dm-checkbox:checked + .dm-label .dm-ball {
    transform: translateX(22px);
}
.dm-icon-dark { display: none !important; color: #0f172a; font-size: 11px; }
.dm-icon-light { display: block !important; color: #f59e0b; font-size: 11px; }
.dm-checkbox:checked + .dm-label .dm-icon-light { display: none !important; }
.dm-checkbox:checked + .dm-label .dm-icon-dark { display: block !important; }

/* Dark mode overrides for better contrast */
body.dark-mode .nav-item { color: var(--text-hi); }
body.dark-mode .nav-item svg { color: var(--muted); }
body.dark-mode .btn-ghost { color: var(--text-hi); }
body.dark-mode .nav-label { color: var(--muted); }

/* Dark mode sidebar nav fix */
body.dark-mode .nav-item { color: #f8fafc !important; }
body.dark-mode .nav-item span { color: #f8fafc !important; }
body.dark-mode .nav-item svg { color: #94a3b8 !important; }
body.dark-mode .nav-item.active { color: #818cf8 !important; background: rgba(99,102,241,0.15) !important; }
body.dark-mode .nav-item.active svg { color: #818cf8 !important; }
body.dark-mode .nav-item:hover { background: #334155 !important; color: #f8fafc !important; }
body.dark-mode .nav-label { color: #94a3b8 !important; }
body.dark-mode .sidebar { background: #1e293b !important; border-color: #334155 !important; }
body.dark-mode .topbar { background: #1e293b !important; border-color: #334155 !important; }
body.dark-mode .btn-ghost { color: #f8fafc !important; }
body.dark-mode .topbar-user strong { color: #f8fafc !important; }