/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #f4f6fb;
  color: #1a1d2e;
  line-height: 1.5;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }

/* ── CSS Variables ───────────────────────────────────────────────────────── */
:root {
  --primary:        #1C1E54;
  --primary-light:  #2a2d6e;
  --accent:         #E41657;
  --bg:             #f4f6fb;
  --surface:        #ffffff;
  --border:         #e2e6ef;
  --muted:          #6b7280;
  --text:           #1a1d2e;
  --sidebar-w:      240px;
  --topbar-h:       56px;
  --radius:         8px;
  --shadow:         0 1px 4px rgba(28,30,84,.08), 0 4px 16px rgba(28,30,84,.06);
}

/* ── Login ───────────────────────────────────────────────────────────────── */
.login-body {
  background: var(--bg); min-height: 100vh;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.login-wrapper {
  display: flex; width: 900px; max-width: 100%; min-height: 520px;
  border-radius: 16px; overflow: hidden; box-shadow: 0 8px 40px rgba(28,30,84,.18);
}
.login-brand {
  flex: 1; background: var(--primary);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 48px 32px; color: #fff; text-align: center;
}
.login-brand-logo { font-size: 48px; margin-bottom: 16px; }
.login-brand-title { font-size: 2.5rem; font-weight: 700; letter-spacing: -.02em; }
.login-brand-sub { font-size: .95rem; opacity: .8; margin-top: 4px; margin-bottom: 24px; }
.login-brand-tagline {
  font-size: .85rem; opacity: .65; max-width: 260px; line-height: 1.6;
  border-top: 1px solid rgba(255,255,255,.15); padding-top: 20px; margin-top: 8px;
}
.login-form-panel {
  flex: 1; background: var(--surface);
  display: flex; align-items: center; justify-content: center; padding: 40px;
}
.login-form-inner { width: 100%; max-width: 340px; }
.login-form-title { font-size: 1.5rem; font-weight: 700; color: var(--text); }
.login-form-sub { font-size: .9rem; color: var(--muted); margin-bottom: 24px; margin-top: 4px; }

/* Login mobile */
@media (max-width: 640px) {
  .login-wrapper { flex-direction: column; min-height: auto; width: 100%; border-radius: 12px; }
  .login-brand { padding: 28px 24px; }
  .login-brand-title { font-size: 1.8rem; }
  .login-brand-tagline { display: none; }
  .login-form-panel { padding: 28px 24px; }
}

/* ── Mobile top-bar (hidden on desktop) ──────────────────────────────────── */
.mobile-topbar {
  display: none;
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  height: var(--topbar-h);
  background: var(--primary); color: #fff;
  align-items: center; justify-content: space-between;
  padding: 0 16px;
  box-shadow: 0 2px 8px rgba(28,30,84,.2);
}
.mobile-topbar-brand { font-size: 1.1rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.hamburger {
  background: none; border: none; cursor: pointer; padding: 8px;
  display: flex; flex-direction: column; gap: 5px; color: #fff;
}
.hamburger span {
  display: block; width: 22px; height: 2px; background: #fff;
  border-radius: 2px; transition: all .25s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Sidebar overlay (mobile) ────────────────────────────────────────────── */
.sidebar-overlay {
  display: none;                          /* hidden on desktop entirely */
  position: fixed; inset: 0; z-index: 299;
  background: rgba(0,0,0,.45);
  opacity: 0; transition: opacity .25s;
  pointer-events: none;                   /* CRITICAL: never block clicks when invisible */
}
.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;                   /* only intercept clicks when dim overlay is shown */
}

/* ── App layout ──────────────────────────────────────────────────────────── */
.app-wrapper { display: flex; min-height: 100vh; }

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w); background: var(--primary); color: #fff;
  display: flex; flex-direction: column; flex-shrink: 0;
  position: sticky; top: 0; height: 100vh; z-index: 300;
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  /* CRITICAL: on desktop the sidebar is always in normal flow — no pointer interference */
  pointer-events: auto;
}
.sidebar-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 20px 16px; border-bottom: 1px solid rgba(255,255,255,.1);
  font-size: 1.25rem; font-weight: 700; letter-spacing: -.01em;
}
.brand-icon { font-size: 1.4rem; }
.sidebar-close {
  display: none; margin-left: auto; background: none; border: none;
  color: rgba(255,255,255,.7); font-size: 1.4rem; cursor: pointer; line-height: 1;
  padding: 2px 4px;
}
.sidebar-nav {
  flex: 1; padding: 12px 10px;
  display: flex; flex-direction: column; gap: 2px; overflow-y: auto;
}
.nav-section-label {
  font-size: .65rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: rgba(255,255,255,.35); padding: 12px 12px 4px; margin-top: 4px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: 6px; font-size: .855rem;
  color: rgba(255,255,255,.75); transition: background .15s, color .15s;
  min-height: 40px;
}
.nav-item:hover, .nav-item.active { background: rgba(255,255,255,.12); color: #fff; }
.nav-item-logout { margin-top: auto; color: rgba(255,255,255,.55); }
.nav-item-logout:hover { background: rgba(228,22,87,.2); color: #fff; }
.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; border-top: 1px solid rgba(255,255,255,.1);
}
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: .875rem; font-weight: 700; flex-shrink: 0;
}
.user-name { font-size: .8rem; font-weight: 600; color: #fff; }
.user-role { font-size: .72rem; color: rgba(255,255,255,.5); text-transform: capitalize; }

/* ── Main content ────────────────────────────────────────────────────────── */
.main-content { flex: 1; min-width: 0; overflow-x: hidden; }
.content-inner { padding: 28px 32px; max-width: 1200px; }

/* ── Page headings ───────────────────────────────────────────────────────── */
.page-title { font-size: 1.4rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.page-sub { font-size: .875rem; color: var(--muted); margin-bottom: 20px; }

/* Page header row (title + action button) */
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px; margin-bottom: 20px;
}
.page-header-left { flex: 1; min-width: 0; }
.page-header-left .page-title { margin-bottom: 2px; }
.page-header-left .page-sub   { margin-bottom: 0; }
.page-header-actions { display: flex; gap: 8px; flex-wrap: wrap; flex-shrink: 0; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 20px;
}
.card-header {
  padding: 14px 16px 12px; border-bottom: 1px solid var(--border);
  font-size: .875rem; font-weight: 600; color: var(--text);
}
.card-body { padding: 16px; }

/* ── KPI cards ───────────────────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px; margin-bottom: 20px;
}
.kpi-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px 16px 12px; position: relative; overflow: hidden;
}
.kpi-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--primary);
}
.kpi-label {
  font-size: .72rem; color: var(--muted); font-weight: 500;
  text-transform: uppercase; letter-spacing: .04em; margin-bottom: 8px;
}
.kpi-value { font-size: 1.75rem; font-weight: 700; color: var(--text); line-height: 1; }

/* ── Quick actions ───────────────────────────────────────────────────────── */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.quick-action-card {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; transition: border-color .15s, background .15s; cursor: pointer;
  display: block;
}
.quick-action-card:hover { border-color: var(--primary); background: #f8f9ff; }
.qa-title { font-size: .875rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.qa-desc { font-size: .8rem; color: var(--muted); }

/* ── Forms ───────────────────────────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid-1 { grid-column: 1 / -1; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: .78rem; font-weight: 500; color: var(--text); }
.form-input, .form-select, .form-textarea {
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 1rem; color: var(--text); background: var(--surface);
  transition: border-color .15s, box-shadow .15s; width: 100%;
  -webkit-appearance: none; appearance: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(28,30,84,.1);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-error { font-size: .75rem; color: var(--accent); margin-top: 2px; }
/* Native select arrow */
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 20px; border-radius: 6px; font-size: .875rem; font-weight: 500;
  cursor: pointer; border: 1px solid transparent; transition: all .15s;
  text-decoration: none; white-space: nowrap; min-height: 40px;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-light); }
.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg); }
.btn-danger { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-sm { padding: 6px 12px; font-size: .8rem; min-height: 32px; }
.btn-block { width: 100%; margin-top: 8px; padding: 12px; font-size: 1rem; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 8px; }

/* ── Alerts ──────────────────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px; border-radius: var(--radius); font-size: .875rem;
  margin-bottom: 16px; border: 1px solid transparent;
}
.alert-success { background: #f0fdf4; color: #166534; border-color: #bbf7d0; }
.alert-danger  { background: #fff1f2; color: #9f1239; border-color: #fecdd3; }
.alert-warning { background: #fffbeb; color: #92400e; border-color: #fde68a; }
.alert-info    { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; padding: 3px 9px;
  border-radius: 999px; font-size: .72rem; font-weight: 600; white-space: nowrap;
}
.badge-success   { background: #dcfce7; color: #166534; }
.badge-warning   { background: #fef9c3; color: #854d0e; }
.badge-danger    { background: #fee2e2; color: #991b1b; }
.badge-primary   { background: #dbeafe; color: #1e40af; }
.badge-secondary { background: #f3f4f6; color: #6b7280; }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; }
table { width: 100%; min-width: max-content; border-collapse: collapse; font-size: .875rem; }
thead tr { background: #f8f9fb; border-bottom: 2px solid var(--border); }
th {
  padding: 10px 14px; text-align: left; font-size: .72rem; font-weight: 600;
  color: var(--muted); white-space: nowrap; text-transform: uppercase; letter-spacing: .04em;
}
td { padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; color: var(--text); }
tbody tr:hover { background: #f8f9ff; }
tbody tr:last-child td { border-bottom: none; }
.td-mono { font-family: 'Courier New', monospace; font-size: .8rem; }
.td-muted { color: var(--muted); }

/* ── Pagination ──────────────────────────────────────────────────────────── */
.pagination {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding: 12px 16px; border-top: 1px solid var(--border); font-size: .8rem; color: var(--muted);
}
.pagination-btns { display: flex; gap: 8px; }

/* ── Filter bar ──────────────────────────────────────────────────────────── */
.filter-bar {
  display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap;
  padding: 14px 16px; background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); margin-bottom: 16px;
}
.filter-bar .form-group { min-width: 140px; flex: 1; }
.filter-bar-actions { display: flex; gap: 8px; align-self: flex-end; flex-shrink: 0; }

/* ── File input ──────────────────────────────────────────────────────────── */
.file-info {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); border-radius: 6px; padding: 8px 12px;
  font-size: .8rem; color: var(--muted); flex-wrap: wrap;
}
.col-hints { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin-top: 8px; }
.col-hint { font-family: monospace; font-size: .75rem; background: var(--bg); padding: 3px 8px; border-radius: 4px; }

/* ── Constrained-width form wrapper ─────────────────────────────────────── */
/* Used on single-record forms/cards so they don't stretch full-width on desktop */
.form-wide { max-width: 700px; }
@media (max-width: 768px) { .form-wide { max-width: 100%; } }

/* ── Misc ────────────────────────────────────────────────────────────────── */
.section-title { font-size: .8rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 14px; }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.detail-item dt { font-size: .72rem; color: var(--muted); margin-bottom: 3px; }
.detail-item dd { font-size: .875rem; font-weight: 500; word-break: break-word; }
.img-thumb { height: 80px; object-fit: contain; border-radius: 6px; border: 1px solid var(--border); margin-top: 6px; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--muted); font-size: .9rem; }

/* ════════════════════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ════════════════════════════════════════════════════════════════════════════ */

/* ── Tablet & Mobile (≤ 768px) ───────────────────────────────────────────── */
@media (max-width: 768px) {

  /* Show mobile top bar */
  .mobile-topbar { display: flex; }
  /* Overlay is display:block on mobile but pointer-events:none until .visible */
  .sidebar-overlay { display: block; }

  /* Push content below topbar */
  .app-wrapper { padding-top: var(--topbar-h); }

  /* Sidebar becomes fixed overlay — CRITICAL: pointer-events:none when closed
     so it cannot intercept any clicks on the main content beneath it */
  .sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    height: 100%; z-index: 300;
    pointer-events: none;           /* ← closed: invisible but must not block clicks */
  }
  /* When open, re-enable interaction */
  .sidebar.open {
    transform: translateX(0);
    pointer-events: auto;           /* ← open: fully interactive */
  }
  .sidebar-close { display: block; }

  /* Content takes full width */
  .main-content { width: 100%; }
  .content-inner { padding: 16px 14px; }

  /* Grids collapse to 2 columns on tablet */
  .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .quick-actions { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .form-grid { grid-template-columns: 1fr; }
  .col-hints { grid-template-columns: 1fr; }

  /* Filter bar stack */
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-bar .form-group { min-width: 0; }
  .filter-bar-actions { align-self: stretch; }
  .filter-bar-actions .btn { flex: 1; justify-content: center; }

  /* Page header stacks on very small */
  .page-header { gap: 10px; }

  /* Pagination stacks */
  .pagination { flex-direction: column; align-items: flex-start; }
}

/* ── Mobile (≤ 480px) ────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .page-title { font-size: 1.15rem; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-actions { grid-template-columns: 1fr 1fr; }
  .kpi-value { font-size: 1.5rem; }

  /* Action buttons in page-header: stack if too many */
  .page-header-actions { width: 100%; }
  .page-header-actions .btn { flex: 1; text-align: center; justify-content: center; }

  /* Smaller card padding */
  .card-body { padding: 12px; }
  .card-header { padding: 12px 12px 10px; }

  /* Table action buttons — icon only hint via smaller padding */
  .btn-sm { padding: 5px 8px; }
}