/* ============================================================
   HienCode · Quản lý chi phí — Modern theme
   ============================================================ */
:root {
  --primary:   #4f46e5;
  --primary-2: #6366f1;
  --success:   #10b981;
  --danger:    #ef4444;
  --warning:   #f59e0b;
  --info:      #06b6d4;
  --dark:      #0f172a;
  --muted:     #64748b;
  --bg:        #f1f5f9;
  --card:      #ffffff;
  --border:    #e2e8f0;
  --sidebar-w: 240px;
  --sidebar-bg:#0f172a;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow:    0 4px 12px rgba(15,23,42,.06);
  --shadow-lg: 0 10px 30px rgba(15,23,42,.10);
  --radius:    12px;
}

* { box-sizing: border-box; }

html, body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: #0f172a;
  font-size: 14px;
  margin: 0;
}

/* ===== Layout ===== */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}
.sidebar {
  background: var(--sidebar-bg);
  color: #cbd5e1;
  padding: 0;
  position: sticky; top: 0; height: 100vh;
  overflow-y: auto;
}
.sidebar-brand {
  padding: 20px 22px 18px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex; align-items: center; gap: 10px;
  color: #fff; text-decoration: none;
}
.sidebar-brand .logo {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(79,70,229,.4);
}
.sidebar-brand .name { font-weight: 700; font-size: 15px; line-height: 1.1; }
.sidebar-brand .sub  { font-size: 11px; color: #94a3b8; }

.sidebar-section {
  padding: 18px 22px 8px;
  font-size: 11px; text-transform: uppercase;
  color: #475569; letter-spacing: 1px; font-weight: 600;
}
.nav-link-side {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 22px;
  color: #cbd5e1;
  text-decoration: none;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all .15s;
}
.nav-link-side i { font-size: 17px; opacity: .9; }
.nav-link-side:hover {
  background: rgba(255,255,255,.04);
  color: #fff;
}
.nav-link-side.active {
  background: linear-gradient(90deg, rgba(79,70,229,.25), transparent);
  border-left-color: var(--primary-2);
  color: #fff;
}

.sidebar-footer {
  padding: 16px 22px;
  border-top: 1px solid rgba(255,255,255,.08);
  margin-top: 12px;
  font-size: 12px;
  color: #64748b;
}

.main {
  display: flex; flex-direction: column;
  min-height: 100vh;
}
.topbar {
  background: #fff;
  padding: 14px 28px;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.topbar h1 {
  font-size: 19px; font-weight: 700; margin: 0;
  color: var(--dark);
}
.topbar h1 .subtitle {
  font-size: 12px; font-weight: 400; color: var(--muted);
  display: block; margin-top: 2px;
}
.user-chip {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 12px;
  background: var(--bg);
  border-radius: 999px;
  cursor: pointer;
  text-decoration: none;
  color: var(--dark);
  font-weight: 500;
  font-size: 13px;
}
.user-chip:hover { background: var(--border); color: var(--dark); }
.user-chip .avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--info));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 12px;
}

.content {
  padding: 24px 28px 60px;
  flex: 1;
}

@media (max-width: 991px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; left: -260px; top: 0; bottom: 0; z-index: 999;
    width: var(--sidebar-w); transition: left .25s;
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { left: 0; }
  .sidebar-backdrop {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,.4); z-index: 998;
  }
  .sidebar-backdrop.show { display: block; }
}
.menu-toggle {
  display: none; background: none; border: none; font-size: 22px;
  color: var(--dark); cursor: pointer;
}
@media (max-width: 991px) { .menu-toggle { display: inline-flex; } }

/* ===== Cards & components ===== */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 0;
}
.card-header {
  background: transparent !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 14px 18px;
  font-weight: 600;
  font-size: 13px;
  color: var(--dark);
}
.card-body { padding: 18px; }

/* KPI card */
.kpi {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .15s, box-shadow .15s;
}
.kpi:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.kpi .kpi-label {
  font-size: 12px; color: var(--muted);
  text-transform: uppercase; letter-spacing: .5px;
  font-weight: 600;
  margin-bottom: 8px;
  display: flex; align-items: center; gap: 8px;
}
.kpi .kpi-value {
  font-size: 26px; font-weight: 700;
  color: var(--dark);
  line-height: 1.1;
}
.kpi .kpi-sub {
  font-size: 12px; color: var(--muted);
  margin-top: 6px;
}
.kpi-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.kpi.revenue .kpi-icon { background: rgba(16,185,129,.12); color: var(--success); }
.kpi.revenue .kpi-value { color: var(--success); }
.kpi.cost    .kpi-icon { background: rgba(239,68,68,.12); color: var(--danger); }
.kpi.cost    .kpi-value { color: var(--danger); }
.kpi.profit  .kpi-icon { background: rgba(79,70,229,.12); color: var(--primary); }
.kpi.profit  .kpi-value { color: var(--primary); }
.kpi.warn    .kpi-icon { background: rgba(245,158,11,.12); color: var(--warning); }
.kpi.warn    .kpi-value { color: var(--warning); }
.kpi.info    .kpi-icon { background: rgba(6,182,212,.12); color: var(--info); }
.kpi.info    .kpi-value { color: var(--info); }

.kpi.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  border: 0;
}
.kpi.hero .kpi-label, .kpi.hero .kpi-value, .kpi.hero .kpi-sub { color: #fff; }
.kpi.hero .kpi-label { color: rgba(255,255,255,.85); }
.kpi.hero .kpi-sub   { color: rgba(255,255,255,.75); }
.kpi.hero .kpi-icon  { background: rgba(255,255,255,.18); color: #fff; }

.kpi.hero-success {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: #fff; border: 0;
}
.kpi.hero-success .kpi-label, .kpi.hero-success .kpi-value, .kpi.hero-success .kpi-sub { color: #fff; }
.kpi.hero-success .kpi-label { color: rgba(255,255,255,.85); }
.kpi.hero-success .kpi-sub   { color: rgba(255,255,255,.75); }
.kpi.hero-success .kpi-icon  { background: rgba(255,255,255,.18); color: #fff; }

.kpi.hero-danger {
  background: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
  color: #fff; border: 0;
}
.kpi.hero-danger .kpi-label, .kpi.hero-danger .kpi-value, .kpi.hero-danger .kpi-sub { color: #fff; }
.kpi.hero-danger .kpi-label { color: rgba(255,255,255,.85); }
.kpi.hero-danger .kpi-sub   { color: rgba(255,255,255,.75); }
.kpi.hero-danger .kpi-icon  { background: rgba(255,255,255,.18); color: #fff; }

/* Buttons */
.btn { font-weight: 500; border-radius: 8px; padding: .5rem 1rem; }
.btn-primary {
  background: var(--primary); border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-2); border-color: var(--primary-2); }
.btn-success { background: var(--success); border-color: var(--success); }
.btn-success:hover { background: #059669; border-color: #059669; }
.btn-danger { background: var(--danger); border-color: var(--danger); }
.btn-soft-primary { background: rgba(79,70,229,.10); color: var(--primary); border: 0; }
.btn-soft-primary:hover { background: rgba(79,70,229,.18); color: var(--primary); }
.btn-soft-success { background: rgba(16,185,129,.10); color: var(--success); border: 0; }
.btn-soft-success:hover { background: rgba(16,185,129,.18); color: var(--success); }

/* Forms */
.form-control, .form-select {
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 14px;
}
.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 .2rem rgba(79,70,229,.15);
}
.form-label { font-weight: 500; font-size: 13px; margin-bottom: 4px; color: #334155; }
.form-text { font-size: 12px; color: var(--muted); }

/* Tables */
.table { font-size: 13px; margin-bottom: 0; }
.table > thead { background: #f8fafc; }
.table > thead th {
  font-weight: 600;
  color: #475569;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .3px;
  border-bottom: 1px solid var(--border) !important;
  padding: 12px 14px;
}
.table > tbody td { padding: 12px 14px; vertical-align: middle; border-color: var(--border); }
.table-hover > tbody > tr:hover > * { background: #f8fafc; }

.badge { font-weight: 500; padding: .35em .6em; border-radius: 6px; font-size: 11px; }
.badge-cat { color: #fff; }

/* Amount */
.amount-cost    { color: var(--danger);  font-weight: 600; }
.amount-revenue { color: var(--success); font-weight: 600; }

/* Quick Entry */
.qe-row {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: background .15s;
}
.qe-row:hover { background: #f8fafc; }
.qe-row:last-child { border-bottom: 0; }
.qe-row .qe-label { font-weight: 500; }
.qe-row .qe-label .badge { margin-right: 8px; }
.qe-row .qe-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.qe-input {
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.qe-summary {
  background: #f8fafc;
  padding: 14px 18px;
  display: flex; justify-content: space-between; align-items: center;
  font-weight: 600;
  border-top: 2px solid var(--border);
}

/* Login page */
.login-wrapper {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(circle at 20% 20%, rgba(79,70,229,.35), transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(6,182,212,.35), transparent 50%),
    linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  padding: 20px;
}
.login-card {
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 32px;
  width: 100%; max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-card .logo-wrap {
  width: 64px; height: 64px; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--info));
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 28px;
  box-shadow: 0 8px 20px rgba(79,70,229,.4);
}

/* Misc */
.section-title {
  font-size: 18px; font-weight: 700; margin: 0 0 4px;
  color: var(--dark);
}
.section-sub { color: var(--muted); font-size: 13px; margin-bottom: 20px; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--dark);
}
.chip.success { background: rgba(16,185,129,.1); color: var(--success); border-color: rgba(16,185,129,.2); }
.chip.danger  { background: rgba(239,68,68,.1);  color: var(--danger);  border-color: rgba(239,68,68,.2); }
.chip.warn    { background: rgba(245,158,11,.1); color: var(--warning); border-color: rgba(245,158,11,.2); }

.alert { border-radius: 10px; border: 0; }
.alert-success { background: rgba(16,185,129,.12); color: #065f46; }
.alert-danger  { background: rgba(239,68,68,.12); color: #991b1b; }
.alert-info    { background: rgba(6,182,212,.12); color: #155e75; }

hr { border-color: var(--border); }

/* Empty state */
.empty {
  text-align: center; padding: 40px 20px; color: var(--muted);
}
.empty i { font-size: 48px; opacity: .3; display: block; margin-bottom: 12px; }

/* Animated counter base */
.counter { font-variant-numeric: tabular-nums; }

/* ===== Offcanvas drawer for forms ===== */
.offcanvas {
  border-left: 1px solid var(--border) !important;
  box-shadow: -10px 0 30px rgba(15,23,42,.1);
}
.offcanvas-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  padding: 18px 22px;
  border-bottom: 0;
}
.offcanvas-header .btn-close {
  filter: invert(1) brightness(2);
  opacity: .8;
}
.offcanvas-header .btn-close:hover { opacity: 1; }
.offcanvas-title {
  font-weight: 700; font-size: 16px;
  display: flex; align-items: center; gap: 10px;
}
.offcanvas-title i {
  width: 32px; height: 32px;
  background: rgba(255,255,255,.18);
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
}
.offcanvas-body {
  padding: 22px;
}
.offcanvas-end { width: 420px !important; }
@media (max-width: 575px) { .offcanvas-end { width: 100% !important; } }

.offcanvas-footer {
  padding: 16px 22px;
  border-top: 1px solid var(--border);
  background: #f8fafc;
  display: flex; gap: 10px; justify-content: flex-end;
}

/* Page action button */
.page-action-bar {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px; margin-bottom: 16px;
}
.btn-add {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
  color: #fff;
  border: 0;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(79,70,229,.3);
  transition: transform .15s, box-shadow .15s;
  text-decoration: none;
}
.btn-add:hover {
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(79,70,229,.4);
}
.btn-add i { font-size: 18px; }