/* ═══════════════════════════════════════════════
   Ledgr – Shared Application Styles
   ═══════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:        #1C4ED8;
  --blue-light:  #3B82F6;
  --blue-dark:   #1E3A8A;
  --teal:        #0D9488;
  --teal-light:  #14B8A6;
  --green:       #10B981;
  --amber:       #F59E0B;
  --red:         #EF4444;
  --purple:      #7C3AED;
  --gray-50:     #F8FAFC;
  --gray-100:    #F1F5F9;
  --gray-200:    #E2E8F0;
  --gray-300:    #CBD5E1;
  --gray-400:    #94A3B8;
  --gray-500:    #64748B;
  --gray-600:    #475569;
  --gray-700:    #334155;
  --gray-800:    #1E293B;
  --gray-900:    #0F172A;
  --white:       #FFFFFF;
  --sidebar-w:   240px;
  --topbar-h:    60px;
  --radius:      10px;
  --radius-lg:   14px;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:   0 12px 40px rgba(0,0,0,.14);
}

html { font-size: 16px; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--gray-800);
  background: var(--gray-50);
  display: flex;
  min-height: 100vh;
}

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--gray-900);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 200;
  transition: transform .25s ease;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  text-decoration: none;
}
.sidebar-logo svg { width: 32px; height: 32px; flex-shrink: 0; }
.sidebar-logo span { font-size: 1.3rem; font-weight: 800; color: var(--white); letter-spacing: -0.5px; }

.sidebar-section { padding: 16px 12px 4px; font-size: .66rem; font-weight: 700; color: var(--gray-500); text-transform: uppercase; letter-spacing: .8px; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 4px; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 16px; margin: 1px 8px;
  border-radius: 8px; text-decoration: none;
  color: var(--gray-400); font-size: .875rem; font-weight: 500;
  transition: all .15s;
}
.nav-item:hover { background: rgba(255,255,255,.07); color: var(--white); }
.nav-item.active { background: var(--blue); color: var(--white); }
.nav-item .icon { width: 18px; height: 18px; flex-shrink: 0; opacity: .8; }
.nav-item.active .icon { opacity: 1; }
.nav-badge {
  margin-left: auto; background: var(--red); color: var(--white);
  font-size: .65rem; font-weight: 700; padding: 1px 7px; border-radius: 100px;
}

.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 10px; border-radius: 8px; cursor: pointer;
  transition: background .15s;
}
.sidebar-user:hover { background: rgba(255,255,255,.07); }
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--blue); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-size: .78rem; font-weight: 700; flex-shrink: 0;
}
.user-info strong { display: block; font-size: .82rem; font-weight: 700; color: var(--white); }
.user-info span   { font-size: .72rem; color: var(--gray-500); }

/* ── MAIN AREA ── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── TOPBAR ── */
.topbar {
  height: var(--topbar-h);
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  display: flex; align-items: center;
  padding: 0 28px; gap: 16px;
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow-sm);
}
.topbar-title { font-size: 1rem; font-weight: 700; color: var(--gray-800); flex: 1; }
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: var(--gray-100); border: 1px solid var(--gray-200);
  border-radius: 8px; padding: 7px 14px; width: 260px;
}
.search-box input {
  border: none; background: transparent; outline: none;
  font-size: .875rem; color: var(--gray-800); width: 100%;
}
.search-box input::placeholder { color: var(--gray-400); }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 36px; height: 36px; border-radius: 8px;
  border: 1px solid var(--gray-200); background: var(--white);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--gray-500); transition: all .15s;
}
.icon-btn:hover { background: var(--gray-100); color: var(--gray-800); }
.notif-badge { position: relative; }
.notif-badge::after {
  content: '3'; position: absolute; top: 4px; right: 4px;
  width: 16px; height: 16px; border-radius: 50%; background: var(--red);
  color: var(--white); font-size: .6rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* ── PAGE CONTENT ── */
.page-content { padding: 28px; flex: 1; }

/* ── PAGE HEADER ── */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 24px; flex-wrap: wrap; gap: 16px;
}
.page-header h1 { font-size: 1.4rem; font-weight: 800; color: var(--gray-800); }
.page-header p  { font-size: .875rem; color: var(--gray-500); margin-top: 2px; }
.page-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius);
  font-size: .875rem; font-weight: 600; cursor: pointer;
  text-decoration: none; border: none; transition: all .15s;
  white-space: nowrap;
}
.btn-primary  { background: var(--blue); color: var(--white); }
.btn-primary:hover  { background: var(--blue-dark); }
.btn-success  { background: var(--green); color: var(--white); }
.btn-success:hover  { background: #059669; }
.btn-danger   { background: var(--red); color: var(--white); }
.btn-danger:hover   { background: #DC2626; }
.btn-outline  { background: var(--white); color: var(--gray-700); border: 1px solid var(--gray-200); }
.btn-outline:hover  { background: var(--gray-100); border-color: var(--gray-300); }
.btn-sm { padding: 6px 14px; font-size: .8rem; }
.btn-lg { padding: 12px 24px; font-size: .95rem; }

/* ── CARDS ── */
.card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 24px;
  box-shadow: var(--shadow-sm);
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px; flex-wrap: wrap; gap: 12px;
}
.card-title { font-size: .9rem; font-weight: 700; color: var(--gray-800); }
.card-subtitle { font-size: .78rem; color: var(--gray-400); margin-top: 2px; }

/* ── KPI GRID ── */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.kpi-card {
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg); padding: 20px;
  box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.kpi-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; border-radius: 14px 14px 0 0;
}
.kpi-card.blue::before   { background: var(--blue); }
.kpi-card.green::before  { background: var(--green); }
.kpi-card.amber::before  { background: var(--amber); }
.kpi-card.teal::before   { background: var(--teal); }
.kpi-card.red::before    { background: var(--red); }
.kpi-label { font-size: .72rem; font-weight: 700; color: var(--gray-400); text-transform: uppercase; letter-spacing: .5px; }
.kpi-value { font-size: 1.6rem; font-weight: 800; color: var(--gray-800); margin: 6px 0 4px; }
.kpi-trend { font-size: .75rem; display: flex; align-items: center; gap: 4px; }
.trend-up   { color: var(--green); }
.trend-down { color: var(--red); }
.trend-flat { color: var(--gray-400); }

/* ── TABLE ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead tr { border-bottom: 1px solid var(--gray-200); }
th {
  text-align: left; padding: 10px 14px;
  font-size: .72rem; font-weight: 700; color: var(--gray-400);
  text-transform: uppercase; letter-spacing: .5px; white-space: nowrap;
}
td { padding: 13px 14px; font-size: .875rem; color: var(--gray-700); border-bottom: 1px solid var(--gray-100); }
tr:last-child td { border-bottom: none; }
tbody tr { transition: background .1s; }
tbody tr:hover { background: var(--gray-50); }
.cell-bold { font-weight: 700; color: var(--gray-800); }
.cell-mono { font-family: 'Courier New', monospace; font-size: .8rem; }
.cell-link { color: var(--blue); text-decoration: none; font-weight: 600; }
.cell-link:hover { text-decoration: underline; }

/* ── STATUS BADGES ── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 10px; border-radius: 100px;
  font-size: .72rem; font-weight: 700; letter-spacing: .2px;
}
.badge::before { content: ''; width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.badge-green  { background: #D1FAE5; color: #065F46; }
.badge-green::before  { background: #10B981; }
.badge-red    { background: #FEE2E2; color: #991B1B; }
.badge-red::before    { background: #EF4444; }
.badge-amber  { background: #FEF3C7; color: #92400E; }
.badge-amber::before  { background: #F59E0B; }
.badge-blue   { background: #DBEAFE; color: #1E40AF; }
.badge-blue::before   { background: #3B82F6; }
.badge-gray   { background: var(--gray-100); color: var(--gray-600); }
.badge-gray::before   { background: var(--gray-400); }
.badge-purple { background: #EDE9FE; color: #5B21B6; }
.badge-purple::before { background: #7C3AED; }

/* ── FORM ELEMENTS ── */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block; font-size: .8rem; font-weight: 600;
  color: var(--gray-700); margin-bottom: 6px;
}
.form-label .required { color: var(--red); margin-left: 2px; }
.form-control {
  width: 100%; padding: 9px 14px;
  border: 1px solid var(--gray-200); border-radius: var(--radius);
  font-size: .875rem; color: var(--gray-800); background: var(--white);
  outline: none; transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}
.form-control:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(28,78,216,.1);
}
.form-control::placeholder { color: var(--gray-400); }
select.form-control { cursor: pointer; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-hint { font-size: .75rem; color: var(--gray-400); margin-top: 4px; }

/* ── TABS ── */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--gray-200); margin-bottom: 24px; }
.tab-btn {
  padding: 10px 20px; font-size: .875rem; font-weight: 600;
  color: var(--gray-500); background: transparent; border: none;
  border-bottom: 2px solid transparent; cursor: pointer;
  transition: all .15s; margin-bottom: -1px;
}
.tab-btn:hover { color: var(--blue); }
.tab-btn.active { color: var(--blue); border-bottom-color: var(--blue); }

/* ── GRID LAYOUTS ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }
.col-span-2 { grid-column: span 2; }

/* ── ALERTS ── */
.alert {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 18px; border-radius: var(--radius);
  margin-bottom: 20px; font-size: .875rem;
}
.alert-info    { background: #DBEAFE; color: #1E40AF; border-left: 3px solid var(--blue); }
.alert-success { background: #D1FAE5; color: #065F46; border-left: 3px solid var(--green); }
.alert-warning { background: #FEF3C7; color: #92400E; border-left: 3px solid var(--amber); }
.alert-danger  { background: #FEE2E2; color: #991B1B; border-left: 3px solid var(--red); }
.alert strong  { font-weight: 700; }

/* ── EMPTY STATE ── */
.empty-state {
  text-align: center; padding: 60px 20px;
  color: var(--gray-400);
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 16px; opacity: .5; }
.empty-state h3 { font-size: 1rem; font-weight: 700; color: var(--gray-600); margin-bottom: 8px; }
.empty-state p  { font-size: .875rem; line-height: 1.7; max-width: 320px; margin-inline: auto; }

/* ── PAGINATION ── */
.pagination {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; border-top: 1px solid var(--gray-100);
  margin-top: 8px;
}
.pagination-info { font-size: .8rem; color: var(--gray-500); }
.pagination-btns { display: flex; gap: 4px; }
.page-btn {
  width: 32px; height: 32px; border-radius: 6px;
  border: 1px solid var(--gray-200); background: var(--white);
  font-size: .8rem; font-weight: 600; color: var(--gray-600);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.page-btn:hover { border-color: var(--blue); color: var(--blue); }
.page-btn.active { background: var(--blue); border-color: var(--blue); color: var(--white); }
.page-btn:disabled { opacity: .4; cursor: default; }

/* ── FILTER BAR ── */
.filter-bar {
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap; margin-bottom: 20px;
}
.filter-bar .form-control { width: auto; padding: 7px 12px; font-size: .825rem; }
.filter-search {
  display: flex; align-items: center; gap: 8px;
  background: var(--white); border: 1px solid var(--gray-200);
  border-radius: var(--radius); padding: 7px 14px; flex: 1; max-width: 320px;
}
.filter-search input {
  border: none; background: transparent; outline: none;
  font-size: .825rem; color: var(--gray-800); width: 100%;
}
.filter-search input::placeholder { color: var(--gray-400); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3   { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .form-grid-2, .form-grid-3 { grid-template-columns: 1fr; }
  .page-content { padding: 20px 16px; }
}