/* ============================================================
   iTong Management System — Dark Theme Stylesheet
   ============================================================ */

:root {
  --bg:           #0D1117;
  --bg-card:      #161B22;
  --bg-card-2:    #21262D;
  --bg-sidebar:   #010409;
  --bg-navbar:    #010409;
  --orange:       #F97316;
  --orange-dark:  #EA6C0A;
  --orange-glow:  rgba(249,115,22,.15);
  --green:        #22C55E;
  --green-dim:    rgba(34,197,94,.15);
  --red:          #EF4444;
  --red-dim:      rgba(239,68,68,.15);
  --yellow:       #EAB308;
  --yellow-dim:   rgba(234,179,8,.15);
  --blue:         #3B82F6;
  --blue-dim:     rgba(59,130,246,.15);
  --purple:       #A855F7;
  --purple-dim:   rgba(168,85,247,.15);
  --text:         #E6EDF3;
  --text-muted:   #8B949E;
  --text-dim:     #484F58;
  --border:       #30363D;
  --border-hover: #484F58;
  --sidebar-w:    240px;
  --navbar-h:     58px;
  --radius:       8px;
  --radius-lg:    12px;
  --shadow:       0 1px 3px rgba(0,0,0,.4), 0 2px 8px rgba(0,0,0,.3);
  --shadow-lg:    0 4px 24px rgba(0,0,0,.5);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
a { color: var(--orange); text-decoration: none; }
a:hover { color: var(--orange-dark); text-decoration: none; }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

/* ---- Navbar ---- */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--navbar-h);
  background: var(--bg-navbar);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 1.5rem;
  border-bottom: 1px solid var(--border);
}
.navbar-brand a {
  color: var(--orange);
  font-size: 1.25rem; font-weight: 800;
  letter-spacing: -.5px;
  text-decoration: none;
  display: flex; align-items: center; gap: .4rem;
}
.navbar-brand a::before {
  content: '◈';
  font-size: 1.1rem;
}
.navbar-right { display: flex; align-items: center; gap: 1rem; }
.navbar-user {
  color: var(--text-muted);
  font-size: .875rem;
  display: flex; align-items: center; gap: .5rem;
}
.navbar-user strong { color: var(--text); }

/* ---- Layout ---- */
.layout { display: flex; min-height: calc(100vh - var(--navbar-h)); margin-top: var(--navbar-h); }

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 1.25rem 0;
  position: sticky; top: var(--navbar-h);
  height: calc(100vh - var(--navbar-h));
  overflow-y: auto;
  display: flex; flex-direction: column;
}
.sidebar-section-label {
  padding: 1rem 1.25rem .4rem;
  font-size: .7rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 1px;
  color: var(--text-dim);
}
.sidebar-nav { display: flex; flex-direction: column; flex: 1; }
.sidebar-link {
  display: flex; align-items: center; gap: .65rem;
  padding: .6rem 1.25rem;
  color: var(--text-muted);
  font-size: .875rem;
  border-left: 2px solid transparent;
  transition: all .15s;
  cursor: pointer;
}
.sidebar-link svg { width: 16px; height: 16px; flex-shrink: 0; opacity: .7; }
.sidebar-link:hover {
  background: rgba(249,115,22,.07);
  color: var(--orange);
  border-left-color: rgba(249,115,22,.3);
}
.sidebar-link:hover svg { opacity: 1; }
.sidebar-link.active {
  background: var(--orange-glow);
  color: var(--orange);
  border-left-color: var(--orange);
  font-weight: 600;
}
.sidebar-link.active svg { opacity: 1; }
.sidebar-divider { border: none; border-top: 1px solid var(--border); margin: .5rem 0; }
.sidebar-bottom { margin-top: auto; padding: .5rem 0; border-top: 1px solid var(--border); }

/* ---- Main content ---- */
.main-content { flex: 1; padding: 2rem; min-width: 0; }

/* ---- Cards ---- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.card-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 1.25rem; padding-bottom: .875rem;
  border-bottom: 1px solid var(--border);
}
.card-header h3 { font-size: 1rem; font-weight: 600; color: var(--text); }
.card-header .text-muted { font-size: .8rem; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .45rem .9rem;
  border-radius: var(--radius);
  font-size: .875rem; font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer; transition: all .15s;
  text-decoration: none; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary {
  background: var(--orange);
  color: #fff;
  border-color: var(--orange);
}
.btn-primary:hover { background: var(--orange-dark); border-color: var(--orange-dark); color: #fff; }
.btn-success {
  background: var(--green);
  color: #000;
  border-color: var(--green);
}
.btn-danger    { background: var(--red); color: #fff; border-color: var(--red); }
.btn-danger:hover { background: #DC2626; }
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border-color: var(--border);
}
.btn-outline:hover { background: var(--bg-card-2); color: var(--text); border-color: var(--border-hover); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-card-2); color: var(--text); }
.btn-sm        { padding: .3rem .65rem; font-size: .8rem; }
.btn-block     { width: 100%; }
.btn svg { width: 14px; height: 14px; }

/* ---- Forms ---- */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block; font-size: .875rem; font-weight: 500;
  margin-bottom: .35rem; color: var(--text-muted);
}
.form-control {
  width: 100%; padding: .55rem .8rem;
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .9rem; color: var(--text);
  transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-glow);
}
.form-control::placeholder { color: var(--text-dim); }
.form-control option { background: var(--bg-card-2); }
.form-control-sm {
  padding: .3rem .5rem; font-size: .8rem;
  background: var(--bg-card-2); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text);
}
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.form-hint { font-size: .8rem; color: var(--text-dim); margin-top: .25rem; }
.form-actions { display: flex; gap: .75rem; margin-top: 1.5rem; }
.form-section { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.form-section h3 {
  font-size: .8rem; font-weight: 700; margin-bottom: 1rem;
  color: var(--text-muted); text-transform: uppercase; letter-spacing: .8px;
}
.radio-group { display: flex; gap: 1.5rem; }
.radio-label { display: flex; align-items: center; gap: .4rem; font-size: .9rem; cursor: pointer; color: var(--text); }
.checkbox-label { display: flex; align-items: center; gap: .4rem; font-size: .9rem; cursor: pointer; color: var(--text); }
.required { color: var(--red); }
.flex-0 { flex: 0; }
.flex-1 { flex: 1; }
.flex-2 { flex: 2; }
.flex-3 { flex: 3; }
.field-row {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem; margin-bottom: .75rem;
}

/* ---- Tables ---- */
.table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.table th {
  background: var(--bg-card-2);
  text-align: left; padding: .65rem 1rem;
  font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.table td {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle; color: var(--text);
}
.table tfoot td {
  font-size: .9rem; padding: .7rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card-2); font-weight: 600;
}
.table tbody tr:hover { background: rgba(255,255,255,.03); }
.table tbody tr:last-child td { border-bottom: none; }
.text-right { text-align: right; }
.text-center { text-align: center; }

/* ---- Badges ---- */
.badge {
  display: inline-flex; align-items: center;
  padding: .2rem .6rem; border-radius: 6px;
  font-size: .72rem; font-weight: 700; letter-spacing: .2px;
}
.badge-admin   { background: var(--yellow-dim); color: var(--yellow); }
.badge-manager { background: var(--blue-dim);   color: var(--blue); }
.badge-viewer  { background: var(--bg-card-2);  color: var(--text-muted); }
.badge-revenue { background: var(--green-dim);  color: var(--green); }
.badge-expense { background: var(--red-dim);    color: var(--red); }
.badge-both    { background: var(--purple-dim); color: var(--purple); }
.badge-active  { background: var(--green-dim);  color: var(--green); }
.badge-inactive{ background: var(--red-dim);    color: var(--red); }
.badge-status-draft    { background: var(--yellow-dim); color: var(--yellow); }
.badge-status-issued   { background: var(--blue-dim);   color: var(--blue); }
.badge-status-paid     { background: var(--green-dim);  color: var(--green); }
.badge-status-cancelled{ background: var(--bg-card-2);  color: var(--text-muted); }
.badge-type-invoice          { background: var(--purple-dim); color: var(--purple); }
.badge-type-payment-voucher  { background: var(--yellow-dim); color: var(--yellow); }
.badge-type-receipt          { background: var(--green-dim);  color: var(--green); }

/* ---- Alerts ---- */
.alert {
  padding: .8rem 1rem; border-radius: var(--radius);
  margin-bottom: 1rem; font-size: .875rem;
  display: flex; align-items: flex-start; gap: .6rem;
}
.alert-success { background: var(--green-dim);  color: var(--green);  border: 1px solid rgba(34,197,94,.3); }
.alert-error   { background: var(--red-dim);    color: var(--red);    border: 1px solid rgba(239,68,68,.3); }
.alert-info    { background: var(--blue-dim);   color: var(--blue);   border: 1px solid rgba(59,130,246,.3); }

/* ---- Stats grid ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem; margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--bg-card);
  padding: 1.35rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: relative; overflow: hidden;
  transition: border-color .2s, transform .15s;
}
.stat-card:hover { border-color: var(--border-hover); transform: translateY(-1px); }
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--border);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.stat-card--revenue::before { background: var(--green); }
.stat-card--expense::before { background: var(--red); }
.stat-card--profit::before  { background: var(--orange); }
.stat-card--members::before { background: var(--blue); }
.stat-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: .75rem;
  font-size: 1rem;
}
.stat-card--revenue .stat-icon { background: var(--green-dim); color: var(--green); }
.stat-card--expense .stat-icon { background: var(--red-dim);   color: var(--red); }
.stat-card--profit  .stat-icon { background: var(--orange-glow); color: var(--orange); }
.stat-card--members .stat-icon { background: var(--blue-dim);  color: var(--blue); }
.stat-label {
  font-size: .75rem; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: .6px; margin-bottom: .3rem;
  font-weight: 600;
}
.stat-value { font-size: 1.6rem; font-weight: 800; color: var(--text); line-height: 1.1; }
.stat-sub   { font-size: .78rem; color: var(--text-muted); margin-top: .25rem; }

/* ---- Chart containers ---- */
.chart-wrapper {
  position: relative;
  padding: 1rem 0 .5rem;
}
.chart-wrapper canvas { max-height: 280px; }

/* ---- Dashboard ---- */
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-bottom: 1.5rem; }
@media (max-width: 900px) { .dashboard-grid { grid-template-columns: 1fr; } }
.quick-links { display: flex; flex-wrap: wrap; gap: .75rem; }

/* ---- Page header ---- */
.page-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 1.75rem;
}
.page-header-left h2 { font-size: 1.45rem; font-weight: 800; color: var(--text); }
.page-header-left p  { color: var(--text-muted); font-size: .875rem; margin-top: .2rem; }
.page-header h2 { font-size: 1.45rem; font-weight: 800; color: var(--text); }
.header-actions { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }

/* ---- Auth layout ---- */
.auth-body {
  background: var(--bg);
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
}
.auth-container { width: 100%; max-width: 420px; }
.auth-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
}
.auth-logo { text-align: center; margin-bottom: 2rem; }
.auth-logo h1 { font-size: 2rem; font-weight: 900; color: var(--orange); letter-spacing: -.5px; }
.auth-logo p { color: var(--text-muted); font-size: .875rem; margin-top: .25rem; }
.auth-form .form-group { margin-bottom: 1.25rem; }
.btn-block { width: 100%; margin-top: .25rem; padding: .65rem; font-size: .95rem; }

/* ---- Pagination ---- */
.pagination { display: flex; align-items: center; gap: 1rem; justify-content: center; padding: 1rem 0; }
.pagination-info { font-size: .85rem; color: var(--text-muted); }

/* ---- Voucher detail ---- */
.voucher-detail-grid { display: grid; grid-template-columns: 1fr 280px; gap: 1.5rem; }
@media (max-width: 800px) { .voucher-detail-grid { grid-template-columns: 1fr; } }
.voucher-meta { margin-bottom: 1.5rem; }
.meta-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: .5rem 0; border-bottom: 1px solid var(--border);
  font-size: .875rem;
}
.meta-row:last-child { border-bottom: none; }
.meta-label { color: var(--text-muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .4px; font-weight: 600; }
.voucher-party {
  background: var(--bg-card-2);
  border-radius: var(--radius); padding: 1rem; margin-bottom: 1.5rem;
}
.voucher-party h4 {
  font-size: .75rem; text-transform: uppercase; letter-spacing: .5px;
  color: var(--text-muted); margin-bottom: .5rem; font-weight: 700;
}
.voucher-notes {
  background: var(--yellow-dim);
  border-left: 3px solid var(--yellow);
  padding: .75rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-top: 1rem; font-size: .875rem; color: var(--text);
}
.voucher-totals { margin-top: 1rem; display: flex; flex-direction: column; align-items: flex-end; gap: .4rem; }
.totals-row { display: flex; gap: 2rem; font-size: .875rem; align-items: center; }
.totals-total {
  font-size: 1.1rem; font-weight: 800; padding-top: .5rem;
  border-top: 2px solid var(--orange); color: var(--orange);
}

/* ---- Filter form ---- */
.filter-form { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }

/* ---- Color swatch ---- */
.color-swatch {
  display: inline-block; width: 10px; height: 10px;
  border-radius: 50%; vertical-align: middle;
}

/* ---- Share URL ---- */
.share-url-box { display: flex; gap: .5rem; }
.share-url-box .form-control { flex: 1; font-family: monospace; font-size: .85rem; }

/* ---- Form detail grid ---- */
.form-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 800px) { .form-detail-grid { grid-template-columns: 1fr; } }

/* ---- Public form ---- */
.public-body {
  background: var(--bg);
  min-height: 100vh;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 2rem 1rem;
}
.public-container { width: 100%; max-width: 680px; }
.public-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg); padding: 2rem;
  border: 1px solid var(--border);
  margin-bottom: 1rem;
}
.public-header {
  margin-bottom: 2rem; padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--orange);
}
.public-header h1 { font-size: 1.5rem; font-weight: 700; color: var(--text); }
.public-desc { color: var(--text-muted); margin-top: .5rem; }

/* ---- Signature pad ---- */
.signature-wrapper {
  border: 2px solid var(--border); border-radius: var(--radius);
  overflow: hidden; display: inline-block; background: #fff;
}
.signature-canvas { display: block; cursor: crosshair; touch-action: none; width: 100%; max-width: 600px; height: 200px; }
.signature-controls {
  display: flex; gap: .5rem; padding: .5rem;
  background: var(--bg-card-2); border-top: 1px solid var(--border);
}

/* ---- Empty state ---- */
.empty-state {
  text-align: center; padding: 3rem 1rem;
  color: var(--text-muted);
}
.empty-state .empty-icon { font-size: 2.5rem; margin-bottom: .75rem; opacity: .4; }
.empty-state p { font-size: .9rem; }

/* ---- Utility ---- */
.text-muted    { color: var(--text-muted) !important; }
.text-success  { color: var(--green) !important; }
.text-danger   { color: var(--red) !important; }
.text-orange   { color: var(--orange) !important; }
.text-warning  { color: var(--yellow) !important; }
.meta-grid     { display: flex; flex-direction: column; gap: .25rem; }
.gap-1 { gap: .5rem; }
.mt-1  { margin-top: .5rem; }
.mb-1  { margin-bottom: .5rem; }
.fw-bold { font-weight: 700; }
.mono { font-family: monospace; }

/* ---- Section title ---- */
.section-title {
  font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .8px;
  color: var(--text-muted); margin-bottom: .75rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { padding: 1rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .page-header { flex-direction: column; gap: .75rem; align-items: flex-start; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
}