/* =========================================================
   Vietmod KMS Design System — tokens.css
   Single source of truth for tokens + component primitives.
   ========================================================= */

/* Fonts ---------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@400;500;600;700;800&family=Sora:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Type families ----------------------------------------- */
  --font-display: 'Sora', 'Be Vietnam Pro', system-ui, sans-serif;
  --font-body:    'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* Type scale (1.2 ratio, base 16) ----------------------- */
  --fs-12: 12px;   --lh-12: 16px;
  --fs-13: 13px;   --lh-13: 18px;
  --fs-14: 14px;   --lh-14: 20px;
  --fs-15: 15px;   --lh-15: 22px;
  --fs-16: 16px;   --lh-16: 24px;
  --fs-18: 18px;   --lh-18: 26px;
  --fs-20: 20px;   --lh-20: 28px;
  --fs-24: 24px;   --lh-24: 32px;
  --fs-28: 28px;   --lh-28: 36px;
  --fs-32: 32px;   --lh-32: 40px;
  --fs-40: 40px;   --lh-40: 46px;
  --fs-56: 56px;   --lh-56: 60px;
  --fs-72: 72px;   --lh-72: 76px;
  --fs-96: 96px;   --lh-96: 96px;

  /* Weights ----------------------------------------------- */
  --fw-regular: 400;
  --fw-medium:  500;
  --fw-semi:    600;
  --fw-bold:    700;
  --fw-black:   800;

  /* Letter-spacing ---------------------------------------- */
  --ls-tight: -0.02em;
  --ls-snug:  -0.01em;
  --ls-norm:  0;
  --ls-wide:  0.06em;
  --ls-wider: 0.12em;

  /* Surfaces / ink ---------------------------------------- */
  --bg-page:      #080A12;
  --bg-card:      #131421;
  --bg-card-hi:   #1B1C2E;
  --bg-elev:      #22243A;
  --bg-input:     #0E0F1A;
  --bg-row-hover: rgba(255,255,255,0.03);

  --line:         rgba(255,255,255,0.08);
  --line-strong:  rgba(255,255,255,0.14);
  --line-soft:    rgba(255,255,255,0.04);

  --ink-1: #F4F4F5;
  --ink-2: #A1A1AA;
  --ink-3: #6B6B78;
  --ink-4: #4A4A55;
  --ink-inv: #0E0F1A;

  /* Accents ----------------------------------------------- */
  --accent-purple:        #7C5CFF;
  --accent-purple-hi:     #8E72FF;
  --accent-purple-soft:   rgba(124,92,255,0.16);
  --accent-purple-line:   rgba(124,92,255,0.40);

  --accent-green:         #00B978;
  --accent-green-hi:      #1ACB8A;
  --accent-green-soft:    rgba(0,185,120,0.16);
  --accent-green-line:    rgba(0,185,120,0.40);

  --accent-red:           #FF3B2F;
  --accent-red-hi:        #FF5448;
  --accent-red-soft:      rgba(255,59,47,0.14);

  --accent-amber:         #F5A524;
  --accent-amber-soft:    rgba(245,165,36,0.14);

  --accent-info:          #2F6FE0;
  --accent-info-soft:     rgba(47,111,224,0.14);

  /* Gradients --------------------------------------------- */
  --gradient-hot:           linear-gradient(90deg, #FF3B2F 0%, #F5A524 100%);
  --gradient-card-purple:   linear-gradient(135deg, #2A1F5C 0%, #1B1C2E 100%);
  --gradient-card-green:    linear-gradient(135deg, #0B4F37 0%, #131421 100%);
  --gradient-page-glow:     radial-gradient(1400px 900px at 85% -10%, rgba(124,92,255,0.32), transparent 60%),
                            radial-gradient(1100px 800px at 10% 110%, rgba(86,52,200,0.22), transparent 60%),
                            radial-gradient(800px 600px at 50% 50%, rgba(60,40,140,0.14), transparent 70%),
                            linear-gradient(180deg, #16102E 0%, #100A24 50%, #0C0820 100%);

  /* Spacing (4px grid) ----------------------------------- */
  --s-1:  4px;
  --s-2:  8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  20px;
  --s-6:  24px;
  --s-8:  32px;
  --s-10: 40px;
  --s-12: 48px;
  --s-16: 64px;
  --s-20: 80px;
  --s-24: 96px;

  /* Radius ------------------------------------------------ */
  --r-2:    8px;
  --r-3:    12px;
  --r-4:    16px;
  --r-5:    20px;
  --r-6:    24px;
  --r-pill: 999px;

  /* Shadows ----------------------------------------------- */
  --shadow-sm:      0 4px 12px rgba(0,0,0,0.20);
  --shadow-soft:    0 8px 24px rgba(0,0,0,0.25);
  --shadow-card:    0 12px 32px rgba(0,0,0,0.30), inset 0 1px 0 rgba(255,255,255,0.04);
  --shadow-modal:   0 20px 60px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.06);
  --shadow-glow-p:  0 0 0 1px rgba(124,92,255,0.35), 0 12px 32px rgba(124,92,255,0.25);
  --shadow-glow-g:  0 0 0 1px rgba(0,185,120,0.35),  0 12px 32px rgba(0,185,120,0.20);

  /* Sizes ------------------------------------------------- */
  --h-input:   44px;
  --h-button:  44px;
  --h-button-lg: 48px;
  --h-button-sm: 36px;
  --h-row:     56px;
  --h-header-landing: 72px;
  --h-header-dash:    64px;

  /* Motion ------------------------------------------------ */
  --ease-out:  cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in:   cubic-bezier(0.4, 0, 1, 1);
  --ease-io:   cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast:    150ms;
  --t-base:    220ms;
  --t-slow:    320ms;

  /* z-index ---------------------------------------------- */
  --z-header:    20;
  --z-dropdown:  40;
  --z-modal:     60;
  --z-toast:     80;
}

/* =========================================================
   Base — semantic element styling.
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  background: transparent;
  color: var(--ink-1);
  font-family: var(--font-body);
  font-size: var(--fs-15);
  line-height: var(--lh-15);
  font-weight: var(--fw-regular);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

html {
  background: var(--gradient-page-glow);
  background-attachment: fixed;
  min-height: 100vh;
}
body {
  background: transparent;
  min-height: 100vh;
}
.app-shell, .app-main, .app-content { background: transparent; }

/* Display + headings -------------------------------------- */
h1, .h1 {
  font-family: var(--font-display);
  font-weight: var(--fw-black);
  font-size: var(--fs-56);
  line-height: var(--lh-56);
  letter-spacing: var(--ls-tight);
  color: var(--ink-1);
  margin: 0;
}
h2, .h2 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-32);
  line-height: var(--lh-32);
  letter-spacing: var(--ls-snug);
  color: var(--ink-1);
  margin: 0;
}
h3, .h3 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  font-size: var(--fs-24);
  line-height: var(--lh-24);
  letter-spacing: var(--ls-snug);
  color: var(--ink-1);
  margin: 0;
}
h4, .h4 {
  font-family: var(--font-body);
  font-weight: var(--fw-semi);
  font-size: var(--fs-18);
  line-height: var(--lh-18);
  color: var(--ink-1);
  margin: 0;
}

p, .body {
  font-size: var(--fs-15);
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

.lead {
  font-size: var(--fs-18);
  line-height: 1.55;
  color: var(--ink-2);
}

.eyebrow {
  font-size: var(--fs-12);
  line-height: var(--lh-12);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: var(--fw-semi);
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
code, .code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: rgba(255,255,255,0.05);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--ink-1);
}

a { color: var(--accent-purple-hi); text-decoration: none; }
a:hover { color: var(--ink-1); }

/* Utility: hero gradient text ----------------------------- */
.text-gradient-hot {
  background: var(--gradient-hot);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* =========================================================
   Component primitives — also re-implemented in JSX kits,
   but these provide a static fallback + previews.
   ========================================================= */

/* Buttons -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: var(--h-button);
  padding: 0 18px;
  border-radius: var(--r-3);
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: var(--fs-14);
  font-weight: var(--fw-semi);
  line-height: 1;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              transform var(--t-fast) var(--ease-out),
              box-shadow var(--t-fast) var(--ease-out);
  white-space: nowrap;
  text-decoration: none;
}
.btn:focus-visible {
  outline: 2px solid var(--accent-purple);
  outline-offset: 2px;
}
.btn:active { transform: scale(0.985); }

.btn-primary {
  background: var(--accent-purple);
  color: #fff;
  box-shadow: 0 6px 20px rgba(124,92,255,0.35);
}
.btn-primary:hover { background: var(--accent-purple-hi); }

.btn-hot {
  background: var(--gradient-hot);
  color: #fff;
  box-shadow: 0 6px 20px rgba(255,59,47,0.30);
}
.btn-hot:hover { filter: brightness(1.06); }

.btn-success {
  background: var(--accent-green);
  color: #04140C;
  box-shadow: 0 6px 20px rgba(0,185,120,0.30);
}
.btn-success:hover { background: var(--accent-green-hi); }

.btn-secondary {
  background: rgba(255,255,255,0.06);
  color: var(--ink-1);
  border-color: var(--line);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.10);
  border-color: var(--line-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--ink-2);
}
.btn-ghost:hover { color: var(--ink-1); background: rgba(255,255,255,0.04); }

.btn-pill { border-radius: var(--r-pill); }
.btn-lg   { height: var(--h-button-lg); padding: 0 22px; font-size: var(--fs-15); }
.btn-sm   { height: var(--h-button-sm); padding: 0 14px; font-size: var(--fs-13); }

/* Inputs --------------------------------------------------- */
/* Glass input — match GLASS surface look. Backdrop-filter cần parent KHÔNG opaque
   để filter có effect (page bg đã là gradient + glow → đủ). */
.input {
  width: 100%;
  height: var(--h-input);
  padding: 0 14px;
  background: linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02));
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--line);
  color: var(--ink-1);
  border-radius: var(--r-3);
  font-family: var(--font-body);
  font-size: var(--fs-15);
  outline: none;
  transition: border-color var(--t-fast) var(--ease-out),
              background-color var(--t-fast) var(--ease-out);
}
.input::placeholder { color: var(--ink-3); }
.input:hover  { border-color: var(--line-strong); }
.input:focus  {
  border-color: var(--accent-purple);
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
}

/* Native select dùng class .input cũng giữ glass — clear UA default bg */
select.input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23A1A1AA' stroke-width='2'><path d='m6 9 6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
select.input option { background: var(--bg-elev); color: var(--ink-1); }

textarea.input {
  height: auto;
  padding: 12px 14px;
  resize: vertical;
}

.label {
  display: block;
  font-size: var(--fs-13);
  color: var(--ink-2);
  font-weight: var(--fw-medium);
  margin-bottom: 6px;
}

/* Cards ---------------------------------------------------- */
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.10);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-radius: var(--r-4);
  box-shadow: var(--shadow-soft);
}
.card-hi {
  background: var(--bg-card-hi);
}
.card-lg { border-radius: var(--r-5); }
.card-pad   { padding: var(--s-6); }
.card-pad-lg { padding: var(--s-8); }

.stat-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-5);
  border: 1px solid var(--line);
  padding: var(--s-6) var(--s-6) var(--s-6) var(--s-6);
  box-shadow: var(--shadow-card);
}
.stat-card.purple { background: var(--gradient-card-purple); }
.stat-card.green  { background: var(--gradient-card-green); }
.stat-value {
  font-family: var(--font-display);
  font-weight: var(--fw-black);
  font-size: var(--fs-56);
  line-height: var(--lh-56);
  letter-spacing: var(--ls-tight);
  color: var(--ink-1);
}
.stat-label {
  font-size: var(--fs-12);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--ink-2);
  font-weight: var(--fw-semi);
}

/* Badges --------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-size: var(--fs-12);
  font-weight: var(--fw-semi);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
  color: var(--ink-2);
  line-height: 1;
}
.badge.green  { color: var(--accent-green);  background: var(--accent-green-soft);  border-color: var(--accent-green-line); }
.badge.purple { color: var(--accent-purple-hi); background: var(--accent-purple-soft); border-color: var(--accent-purple-line); }
.badge.red    { color: var(--accent-red-hi); background: var(--accent-red-soft); border-color: rgba(255,59,47,0.35); }
.badge.amber  { color: var(--accent-amber); background: var(--accent-amber-soft); border-color: rgba(245,165,36,0.35); }
.badge.dot::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 999px;
  background: currentColor;
  display: inline-block;
}

/* Tabs (pill) ---------------------------------------------- */
.tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--ink-2);
  font-size: var(--fs-14);
  font-weight: var(--fw-semi);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out);
}
.tab:hover { color: var(--ink-1); background: rgba(255,255,255,0.04); }
.tab.active {
  color: var(--ink-1);
  background: var(--accent-purple-soft);
  border-color: var(--accent-purple-line);
}

/* Table ---------------------------------------------------- */
.tbl {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--fs-14);
}
.tbl thead th {
  text-align: left;
  font-size: var(--fs-12);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: var(--fw-semi);
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.02);
}
.tbl tbody td {
  padding: 16px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--ink-1);
  vertical-align: middle;
}
.tbl tbody tr:hover { background: var(--bg-row-hover); }
.tbl tbody tr:last-child td { border-bottom: 0; }

/* Modal ---------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(8,10,18,0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal {
  width: 100%;
  max-width: 480px;
  background: var(--bg-elev);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-5);
  box-shadow: var(--shadow-modal);
  padding: var(--s-8);
  position: relative;
}
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  display: inline-flex;
  align-items: center; justify-content: center;
  border-radius: var(--r-2);
  background: transparent;
  border: 1px solid transparent;
  color: var(--ink-2);
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out);
}
.modal-close:hover { background: rgba(255,255,255,0.06); color: var(--ink-1); }

/* Toast ---------------------------------------------------- */
.toast {
  position: relative;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-3);
  padding: 14px 16px;
  box-shadow: var(--shadow-modal);
  min-width: 280px;
  max-width: 360px;
  overflow: hidden;
  /* Bay từ phải vào — slide + fade. */
  animation: toastSlideIn 320ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}
@keyframes toastSlideIn {
  from { transform: translate3d(120%, 0, 0); opacity: 0; }
  to   { transform: translate3d(0, 0, 0);    opacity: 1; }
}
.toast.toast-out {
  animation: toastSlideOut 220ms var(--ease-in) forwards;
}
@keyframes toastSlideOut {
  from { transform: translate3d(0, 0, 0);    opacity: 1; }
  to   { transform: translate3d(120%, 0, 0); opacity: 0; }
}
.toast .toast-icon {
  width: 32px; height: 32px;
  border-radius: var(--r-pill);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.toast.success .toast-icon { background: var(--accent-green-soft); color: var(--accent-green); }
.toast.error   .toast-icon { background: var(--accent-red-soft);   color: var(--accent-red-hi); }
.toast .toast-title { font-weight: var(--fw-semi); font-size: var(--fs-14); color: var(--ink-1); }
.toast .toast-body  { font-size: var(--fs-13); color: var(--ink-2); }

/* Timeline bar ở dưới đáy — biết khi nào toast tự mất.
   Width animate từ 100% → 0 trong --toast-duration (set inline). */
.toast-timer {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--accent-purple), var(--accent-purple-hi));
  transform-origin: left center;
  animation: toastTimer var(--toast-duration, 2800ms) linear forwards;
  border-radius: 0 0 var(--r-3) var(--r-3);
}
.toast.success .toast-timer { background: linear-gradient(90deg, var(--accent-green), var(--accent-green-hi)); }
.toast.error   .toast-timer { background: linear-gradient(90deg, var(--accent-red),   var(--accent-red-hi)); }
@keyframes toastTimer {
  from { transform: scaleX(1); }
  to   { transform: scaleX(0); }
}

/* Status pill (for table TRẠNG THÁI) ---------------------- */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--r-pill);
  font-size: var(--fs-11, 11px);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  border: 1px solid var(--accent-green-line);
  color: var(--accent-green);
  background: var(--accent-green-soft);
  line-height: 1;
}
.status-pill::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 999px;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

/* Grid (lightweight helper) -------------------------------- */
.row { display: flex; gap: var(--s-4); }
.col { flex: 1; }
.stack { display: flex; flex-direction: column; gap: var(--s-4); }
.between { justify-content: space-between; }
.center { align-items: center; }

/* ===========================================================
   Responsive layout classes
   =========================================================== */
/* Snap instant — animate column gây jerk vì justify-content/padding không animate đc */
.app-shell    { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.app-shell.collapsed { grid-template-columns: 72px 1fr; }

/* Sidebar brand (now a button) — padding cố định cho cả 2 state để icon đứng yên.
   18px horizontal: logo 36 + padding 18*2 = 72 → vừa khít sidebar collapsed, không clip. */
.sidebar-brand { display: flex; align-items: center; gap: 12px; padding: 18px 18px;
                 border-bottom: 1px solid var(--line-soft); background: transparent;
                 border-left: 0; border-right: 0; border-top: 0; cursor: pointer;
                 width: 100%; transition: background 150ms; }
.sidebar-brand:hover { background: rgba(255,255,255,0.03); }

.sidebar-collapse-btn { display: flex; align-items: center; padding: 10px 14px;
                        margin: 4px 12px; border-radius: 10px; background: transparent;
                        border: 1px solid var(--line-soft); color: var(--ink-2);
                        cursor: pointer; transition: background 150ms, color 150ms, border-color 150ms;
                        width: calc(100% - 24px); }
.sidebar-collapse-btn:hover { background: rgba(255,255,255,0.04); color: var(--ink-1); border-color: var(--line); }

/* Collapsed: snap instant nên CÓ THỂ dùng justify-content: center an toàn */
.app-sidebar.collapsed .sidebar-brand-text,
.app-sidebar.collapsed .sidebar-close,
.app-sidebar.collapsed .sidebar-nav-label,
.app-sidebar.collapsed .sidebar-nav-badge { display: none !important; }

.app-sidebar.collapsed .sidebar-brand          { justify-content: center; }
.app-sidebar.collapsed .sidebar-nav-item       { justify-content: center; }
.app-sidebar.collapsed .sidebar-collapse-btn   { justify-content: center; }
/* user-pill: avatar 36 cần shrink padding để fit vào sidebar 72 */
.app-sidebar.collapsed .user-pill-wrap         { padding: 10px !important; }
.app-sidebar.collapsed .user-pill-btn          { justify-content: center; gap: 0 !important; padding: 6px !important; }

/* group-title: LOCK height 28px + nowrap ở MỌI state.
   Lý do: trong sidebar 72px collapsed, "TỔNG QUAN" (letter-spacing 0.14em) wraps 3-4 dòng
   → title cao gấp 3 lần → items bị đẩy xuống. Khoá height ép text bị clip phẳng. */
.sidebar-group-title {
  height: 28px;
  box-sizing: border-box;
  overflow: hidden;
  white-space: nowrap;
}
.app-sidebar.collapsed .sidebar-group-title {
  position: relative;
  color: transparent !important;   /* đè inline style sb.groupTitle.color */
  user-select: none;
}
.app-sidebar.collapsed .sidebar-group-title::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 1px;
  background: var(--line-strong);
  border-radius: 1px;
}

.app-sidebar  { position: sticky; top: 0; align-self: flex-start; height: 100vh;
                border-right: 1px solid rgba(255,255,255,0.08);
                background: linear-gradient(180deg, rgba(28,20,60,0.55), rgba(18,12,40,0.45));
                backdrop-filter: blur(18px) saturate(160%);
                -webkit-backdrop-filter: blur(18px) saturate(160%);
                display: flex; flex-direction: column; z-index: 40; }
/* KHÔNG dùng overflow-x: hidden — sẽ clip dropdown user pill khi collapsed */

/* Tránh reflow chữ trong lúc sidebar đang animate (260 ⇄ 72) */
.sidebar-brand-text,
.sidebar-brand-text > *,
.sidebar-nav-label,
.sidebar-nav-label > * {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.app-main     { display: flex; flex-direction: column; min-width: 0; }
.app-content  { padding: 24px 40px 64px; max-width: 1280px; width: 100%; align-self: center; }
.topbar       { border-bottom: 1px solid rgba(255,255,255,0.08);
                background: linear-gradient(180deg, rgba(22,16,50,0.55), rgba(16,10,36,0.35));
                backdrop-filter: blur(16px) saturate(160%);
                -webkit-backdrop-filter: blur(16px) saturate(160%);
                position: sticky; top: 0; z-index: 10; }
.topbar-inner { max-width: 1280px; margin: 0 auto; padding: 20px 40px;
                display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.topbar-title { font-size: 28px; line-height: 1.1; }
.hamburger    { display: none; }
.sidebar-backdrop { display: none; }

.grid-kpi      { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-quick    { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.grid-keys     { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid-2-1      { display: grid; grid-template-columns: 1.4fr 1fr; gap: 20px; }
.grid-deposit  { display: grid; grid-template-columns: 1fr 360px; gap: 20px; }
.grid-profile  { display: grid; grid-template-columns: 300px 1fr; gap: 20px; }
.grid-contact  { display: grid; grid-template-columns: 320px 1fr; gap: 20px; }
.grid-contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.grid-invoice  { display: grid; grid-template-columns: 1fr 180px; gap: 24px; }
.grid-banks    { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.grid-modal-2  { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-plans    { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* Tablet --------------------------------------------------- */
@media (max-width: 1024px) {
  .app-content   { padding: 20px 24px 48px; }
  .topbar-inner  { padding: 16px 24px; }
  .grid-kpi      { grid-template-columns: repeat(2, 1fr); }
  .grid-quick    { grid-template-columns: repeat(2, 1fr); }
  .grid-keys     { grid-template-columns: repeat(2, 1fr); }
  .grid-2-1      { grid-template-columns: 1fr; }
  .grid-deposit  { grid-template-columns: 1fr; }
  .grid-profile  { grid-template-columns: 1fr; }
  .grid-contact  { grid-template-columns: 1fr; }
  .grid-banks    { grid-template-columns: 1fr; }
}

/* Mobile --------------------------------------------------- */
@media (max-width: 720px) {
  .app-shell        { grid-template-columns: 1fr; }
  .app-sidebar      { position: fixed; top: 0; left: 0; width: 280px; height: 100vh;
                      transform: translateX(-100%); transition: transform 200ms ease-out;
                      box-shadow: var(--shadow-modal); }
  .app-sidebar.open { transform: translateX(0); }
  .sidebar-backdrop { display: block; position: fixed; inset: 0; z-index: 35;
                      background: rgba(8,10,18,0.6); backdrop-filter: blur(4px);
                      opacity: 0; pointer-events: none; transition: opacity 200ms ease-out; }
  .sidebar-backdrop.open { opacity: 1; pointer-events: auto; }

  .hamburger        { display: inline-flex; align-items: center; justify-content: center;
                      width: 40px; height: 40px; border-radius: 10px;
                      background: rgba(255,255,255,0.06); border: 1px solid var(--line);
                      color: var(--ink-1); cursor: pointer; }

  .app-content      { padding: 16px 16px 48px; }
  .topbar-inner     { padding: 14px 16px; gap: 12px; }
  .topbar-title     { font-size: 20px; }
  .topbar-eyebrow   { display: none; }
  .topbar-subtitle  { display: none; }

  .grid-kpi         { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-quick       { grid-template-columns: 1fr; gap: 10px; }
  .grid-keys        { grid-template-columns: 1fr; }
  .grid-contact-cards { grid-template-columns: 1fr; }
  .grid-invoice     { grid-template-columns: 1fr; }
  .grid-modal-2     { grid-template-columns: 1fr; }
  .grid-plans       { grid-template-columns: 1fr; }

  .welcome-banner   { flex-direction: column; align-items: flex-start; padding: 20px 20px; gap: 14px; }
  .welcome-banner h2{ font-size: 22px; }

  .card-pad         { padding: 16px; }
  .card-pad-lg      { padding: 18px; }

  .modal-backdrop   { padding: 12px; }
  .modal            { padding: 20px; max-height: calc(100vh - 24px); overflow-y: auto; }

  .toast            { min-width: 240px; max-width: calc(100vw - 32px); }

  /* Tighten tables, allow horizontal scroll on parent */
  .tbl thead th, .tbl tbody td { padding: 12px 10px; }
}

/* Narrow phone -------------------------------------------- */
@media (max-width: 380px) {
  .grid-kpi { grid-template-columns: 1fr; }
}

/* Scrollbar polish (dark) --------------------------------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.14); }

/* =========================================================
   Motion polish — chống jank, GPU-friendly
   ========================================================= */

/* Hint browser pre-promote layer cho các surface có hover/active animation.
   Tránh first-frame jank khi user mới hover lần đầu. */
.btn,
.tab,
.modal,
.toast,
.sidebar-nav-item,
.sidebar-collapse-btn,
.user-pill-btn,
.card,
.modal-close { will-change: background-color, color, transform, opacity; }

/* Toast slide-in cho mượt — currently chỉ fade, thêm slide nhẹ. */
.toast {
  transform: translateX(0);
  transition: transform var(--t-base) var(--ease-out),
              opacity var(--t-base) var(--ease-out);
}

/* Modal smooth open + animate transform/opacity (GPU props). */
.modal {
  transform-origin: center;
  animation: modalIn var(--t-base) var(--ease-out);
}
.modal-backdrop { animation: backdropIn var(--t-fast) var(--ease-out); }

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes backdropIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Reduce-motion: tắt hết animation cho user accessibility setting. */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}