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

:root {
  --sidebar-w:     220px;
  --sidebar-bg:    #1a2236;
  --sidebar-text:  #b0b8cc;
  --sidebar-hover: #243047;
  --sidebar-active:#3b82f6;
  --primary:       #3b82f6;
  --primary-dark:  #2563eb;
  --success:       #22c55e;
  --warning:       #f59e0b;
  --danger:        #ef4444;
  --info:          #06b6d4;
  --bg:            #f0f2f8;
  --card:          #ffffff;
  --text:          #1e2433;
  --muted:         #6b7280;
  --border:        #e2e8f0;
  --radius:        6px;
  --shadow:        0 1px 4px rgba(0,0,0,.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* ── Sidebar ──────────────────────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  padding: 18px 16px;
  font-size: 17px;
  font-weight: 700;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.08);
  letter-spacing: -.01em;
}
.sidebar-brand span { color: var(--primary); }

.sidebar-section { padding: 6px 0; }
.sidebar-section:last-child { margin-top: auto; border-top: 1px solid rgba(255,255,255,.08); }

.sidebar-label {
  padding: 8px 16px 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: rgba(255,255,255,.28);
}

.sidebar a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 13.5px;
  transition: background .12s, color .12s;
}
.sidebar a:hover  { background: var(--sidebar-hover); color: #fff; }
.sidebar a.active { background: var(--sidebar-active); color: #fff; }
.sidebar a.active .sidebar-icon { opacity: 1; }

.sidebar-icon { width: 15px; height: 15px; flex-shrink: 0; opacity: .6; }

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

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title { font-size: 16px; font-weight: 600; }
.topbar-user  { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
.topbar-user a { color: var(--primary); text-decoration: none; }

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

/* ── Cards ────────────────────────────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-header {
  padding: 13px 18px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-body { padding: 20px; }

/* ── Stats grid ───────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.stat-number { font-size: 30px; font-weight: 700; line-height: 1; }
.stat-label  { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* ── Tables ───────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  text-align: left;
  padding: 9px 12px;
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: #f7f9ff; }

/* ── Badges ───────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-new        { background: #dbeafe; color: #1d4ed8; }
.badge-inprogress { background: #fef3c7; color: #92400e; }
.badge-waiting    { background: #e0f2fe; color: #0369a1; }
.badge-backlog    { background: #f3f4f6; color: #374151; }
.badge-done       { background: #d1fae5; color: #065f46; }
.badge-closed     { background: #bbf7d0; color: #065f46; }
.badge-rejected   { background: #fee2e2; color: #991b1b; }
.badge-high       { background: #fef3c7; color: #92400e; }
.badge-urgent     { background: #fee2e2; color: #991b1b; }
.badge-normal     { background: #f3f4f6; color: #374151; }
.badge-low        { background: #eff6ff; color: #1d4ed8; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 15px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: background .12s, border-color .12s, opacity .12s;
  line-height: 1.4;
  white-space: nowrap;
}
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary   { background: var(--primary);   color: #fff; border-color: var(--primary); }
.btn-primary:hover   { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-secondary { background: #f3f4f6; color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: #e9ecf0; }
.btn-danger    { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover    { background: #dc2626; border-color: #dc2626; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* ── Forms ────────────────────────────────────────────────────────────────── */
.form-group  { margin-bottom: 16px; }
.form-label  { display: block; font-weight: 500; margin-bottom: 5px; font-size: 13px; }
.form-control {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  transition: border-color .12s, box-shadow .12s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}
textarea.form-control { min-height: 120px; resize: vertical; }
select.form-control   { appearance: auto; }
input[type="file"].form-control { padding: 6px 8px; }

/* ── Grid ─────────────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ── Alerts ───────────────────────────────────────────────────────────────── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 13px;
  border: 1px solid transparent;
}
.alert-success { background: #f0fdf4; color: #15803d; border-color: #bbf7d0; }
.alert-error   { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.alert-info    { background: #eff6ff; color: #1d4ed8; border-color: #bfdbfe; }

/* ── Login page ───────────────────────────────────────────────────────────── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a2236 0%, #243047 100%);
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 36px 40px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
}
.login-logo {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 26px;
  text-align: center;
  color: var(--text);
}
.login-logo span { color: var(--primary); }

/* ── Filters bar ──────────────────────────────────────────────────────────── */
.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.filters select,
.filters input[type="text"],
.filters input[type="search"] {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: #fff;
  color: var(--text);
  height: 32px;
}
.filters select:focus,
.filters input:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Task detail meta ─────────────────────────────────────────────────────── */
.task-meta {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.meta-label {
  font-size: 10.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  margin-bottom: 3px;
}
.meta-value { font-size: 13.5px; }

.description-block {
  background: #f8faff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  white-space: pre-wrap;
  font-size: 13px;
  line-height: 1.7;
  font-family: inherit;
}

/* ── Pagination ───────────────────────────────────────────────────────────── */
.pagination { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; }
.pagination a,
.pagination span {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  text-decoration: none;
  color: var(--text);
}
.pagination a:hover { background: #f3f4f6; }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ── Progress bar ─────────────────────────────────────────────────────────── */
.progress { background: #e5e7eb; border-radius: 99px; height: 6px; }
.progress-bar { background: var(--primary); border-radius: 99px; height: 100%; transition: width .3s; }

/* ── Utilities ────────────────────────────────────────────────────────────── */
.text-muted   { color: var(--muted) !important; }
.text-small   { font-size: 12px; }
.text-danger  { color: var(--danger) !important; }
.mb-16        { margin-bottom: 16px; }
.mb-24        { margin-bottom: 24px; }
.flex         { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8        { gap: 8px; }
.gap-12       { gap: 12px; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  :root { --sidebar-w: 56px; }
  .sidebar-brand, .sidebar-label { display: none; }
  .sidebar a span { display: none; }
  .sidebar a { justify-content: center; padding: 12px; }
  .content { padding: 16px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}