:root {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --success: #059669;
  --warn: #d97706;
  --danger: #dc2626;
  --sidebar-bg: #111827;
  --sidebar-text: #9ca3af;
  --sidebar-active: #1f2937;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
}

* { margin:0; padding:0; box-sizing:border-box; }
html, body { height:100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }

/* ---------- LOGIN ---------- */
.login-wrap {
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  padding:20px; background: linear-gradient(135deg,#1e1b4b 0%,#4f46e5 100%);
}
.login-card {
  background:#fff; width:100%; max-width:400px;
  padding:36px 32px; border-radius:16px;
  box-shadow: 0 25px 50px rgba(0,0,0,.25);
}
.login-logo {
  width:56px; height:56px; border-radius:14px;
  background: var(--primary); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:22px; font-weight:700; margin:0 auto 18px;
}
.login-card h2 { text-align:center; font-size:20px; margin-bottom:6px; }
.login-card p.sub { text-align:center; color:var(--muted); font-size:13px; margin-bottom:24px; }
.login-card label { display:block; font-size:12px; font-weight:600; color:var(--muted); margin-bottom:6px; text-transform:uppercase; letter-spacing:.5px; }
.login-card input {
  width:100%; padding:12px 14px; border:1px solid var(--border);
  border-radius:8px; margin-bottom:16px; font-size:14px; background:#f9fafb;
  transition: .15s;
}
.login-card input:focus { outline:none; border-color:var(--primary); background:#fff; box-shadow:0 0 0 3px rgba(79,70,229,.1); }
.login-card button {
  width:100%; padding:13px; background:var(--primary); color:#fff;
  border:none; border-radius:8px; font-size:14px; font-weight:600;
  cursor:pointer; transition:.15s;
}
.login-card button:hover { background:var(--primary-dark); }
.alert-error {
  background:#fef2f2; color:var(--danger); padding:10px 12px;
  border-radius:8px; font-size:13px; margin-bottom:16px;
  border:1px solid #fecaca;
}

/* ---------- LAYOUT ---------- */
.app { display:flex; min-height:100vh; }

/* Sidebar */
.sidebar {
  width:240px; background:var(--sidebar-bg); color:var(--sidebar-text);
  padding:20px 0; flex-shrink:0; display:flex; flex-direction:column;
  position:sticky; top:0; height:100vh; overflow-y:auto;
  transition: transform .25s ease;
}
.sidebar-brand {
  padding:0 20px 20px; border-bottom:1px solid #1f2937;
  margin-bottom:14px; display:flex; align-items:center; gap:10px;
}
.sidebar-brand-logo {
  width:36px; height:36px; background:var(--primary); border-radius:9px;
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-weight:700; font-size:15px; flex-shrink:0;
}
.sidebar-brand span { color:#fff; font-weight:600; font-size:15px; }
.sidebar-brand small { display:block; color:var(--sidebar-text); font-size:11px; font-weight:400; margin-top:1px; }

.sidebar nav { flex:1; padding:0 12px; }
.sidebar nav a {
  display:flex; align-items:center; gap:11px;
  padding:10px 12px; border-radius:8px; color:var(--sidebar-text);
  font-size:13.5px; font-weight:500; margin-bottom:2px;
  transition:.15s;
}
.sidebar nav a:hover { background:#1f2937; color:#fff; }
.sidebar nav a.active { background:var(--sidebar-active); color:#fff; }
.sidebar nav a .ico {
  width:18px; height:18px; flex-shrink:0; opacity:.85;
  display:inline-flex; align-items:center; justify-content:center;
}
.sidebar footer {
  padding:14px 20px 0; border-top:1px solid #1f2937; margin-top:14px;
}
.sidebar footer a {
  color:#f87171; font-size:13px; font-weight:500;
  display:flex; align-items:center; gap:10px;
}
.sidebar-user {
  padding:0 20px 16px; display:flex; align-items:center; gap:10px;
}
.sidebar-user .avatar {
  width:36px; height:36px; border-radius:50%; background:var(--primary);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-weight:600; font-size:13px; flex-shrink:0;
}
.sidebar-user .info { overflow:hidden; }
.sidebar-user .info b { display:block; color:#fff; font-size:13px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.sidebar-user .info small { color:var(--sidebar-text); font-size:11px; text-transform:uppercase; letter-spacing:.4px; }

/* Main */
.main { flex:1; padding:28px; min-width:0; }
.topbar {
  display:flex; justify-content:space-between; align-items:center;
  margin-bottom:24px; gap:14px; flex-wrap:wrap;
}
.topbar h1 { font-size:22px; font-weight:600; letter-spacing:-.3px; }
.topbar .subtitle { color:var(--muted); font-size:13px; margin-top:3px; }

.menu-toggle {
  display:none; background:#fff; border:1px solid var(--border);
  border-radius:8px; padding:8px; cursor:pointer;
  width:38px; height:38px; align-items:center; justify-content:center;
}
.menu-toggle span {
  display:block; width:16px; height:2px; background:var(--text);
  position:relative;
}
.menu-toggle span::before, .menu-toggle span::after {
  content:''; position:absolute; left:0; width:16px; height:2px; background:var(--text);
}
.menu-toggle span::before { top:-5px; }
.menu-toggle span::after { top:5px; }

.overlay {
  display:none; position:fixed; inset:0; background:rgba(0,0,0,.4);
  z-index:40; opacity:0; transition:.2s;
}
.overlay.show { display:block; opacity:1; }

/* Cards */
.cards {
  display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:16px; margin-bottom:26px;
}
.card {
  background:var(--surface); padding:20px; border-radius:var(--radius);
  border:1px solid var(--border); box-shadow:var(--shadow);
}
.card .label { font-size:12px; color:var(--muted); font-weight:600; text-transform:uppercase; letter-spacing:.5px; margin-bottom:8px; }
.card .num { font-size:26px; font-weight:700; color:var(--text); letter-spacing:-.5px; }
.card .hint { font-size:12px; color:var(--muted); margin-top:6px; }

/* Section title */
.section-title {
  font-size:15px; font-weight:600; margin:0 0 14px;
  display:flex; align-items:center; justify-content:space-between;
}

/* Table */
.table-wrap {
  background:var(--surface); border-radius:var(--radius);
  overflow:hidden; border:1px solid var(--border); box-shadow:var(--shadow);
}
.table-scroll { overflow-x:auto; }
table { width:100%; border-collapse:collapse; min-width:640px; }
th, td { padding:13px 16px; text-align:left; font-size:13.5px; border-bottom:1px solid var(--border); vertical-align:middle; }
th { background:#f9fafb; color:var(--muted); font-weight:600; text-transform:uppercase; font-size:11px; letter-spacing:.5px; }
tbody tr:last-child td { border-bottom:none; }
tbody tr:hover td { background:#fafbff; }

/* Buttons */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:6px;
  padding:9px 16px; border-radius:8px; font-size:13px; font-weight:600;
  border:none; cursor:pointer; transition:.15s; text-decoration:none;
  white-space:nowrap;
}
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-dark); }
.btn-success { background:var(--success); color:#fff; }
.btn-warn { background:var(--warn); color:#fff; }
.btn-danger { background:var(--danger); color:#fff; }
.btn-ghost { background:#fff; color:var(--text); border:1px solid var(--border); }
.btn-ghost:hover { background:#f9fafb; }
.btn-sm { padding:6px 11px; font-size:12px; }

/* Badges */
.status {
  padding:4px 10px; border-radius:20px; font-size:11.5px; font-weight:600;
  display:inline-block; letter-spacing:.3px; text-transform:capitalize;
}
.status-pending { background:#fef3c7; color:#92400e; }
.status-in_progress { background:#dbeafe; color:#1e40af; }
.status-completed { background:#d1fae5; color:#065f46; }

.priority {
  padding:3px 9px; border-radius:6px; font-size:11px; font-weight:600;
  text-transform:uppercase; letter-spacing:.5px;
}
.priority-low { background:#f3f4f6; color:#4b5563; }
.priority-medium { background:#fef3c7; color:#92400e; }
.priority-high { background:#fee2e2; color:#991b1b; }

.score-stars { color:#f59e0b; font-weight:600; font-size:13px; }

/* Forms */
.form-box {
  background:var(--surface); padding:24px; border-radius:var(--radius);
  box-shadow:var(--shadow); border:1px solid var(--border);
  max-width:680px; margin-bottom:22px;
}
.form-box h3 { font-size:15px; margin-bottom:18px; font-weight:600; }
.form-box label {
  display:block; font-size:12px; font-weight:600; margin:0 0 6px;
  color:var(--muted); text-transform:uppercase; letter-spacing:.5px;
}
.form-box input, .form-box select, .form-box textarea {
  width:100%; padding:11px 13px; border:1px solid var(--border);
  border-radius:8px; font-size:14px; font-family:inherit; background:#f9fafb;
  margin-bottom:16px; transition:.15s;
}
.form-box input:focus, .form-box select:focus, .form-box textarea:focus {
  outline:none; border-color:var(--primary); background:#fff;
  box-shadow:0 0 0 3px rgba(79,70,229,.1);
}
.form-box textarea { min-height:95px; resize:vertical; }
.form-box .btn { margin-top:4px; }

.grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }

/* Detail card */
.detail-card {
  background:var(--surface); padding:24px; border-radius:var(--radius);
  border:1px solid var(--border); box-shadow:var(--shadow); margin-bottom:22px;
}
.detail-card h2 { font-size:18px; margin-bottom:10px; }
.detail-card .meta { display:flex; gap:14px; flex-wrap:wrap; margin:12px 0; font-size:13px; color:var(--muted); }
.detail-card .meta b { color:var(--text); }
.detail-card p { line-height:1.65; color:#374151; }

/* Comment / update list */
.update-item {
  background:var(--surface); padding:16px; border-radius:var(--radius);
  border:1px solid var(--border); margin-bottom:10px;
}
.update-item .who { display:flex; justify-content:space-between; font-size:12.5px; color:var(--muted); margin-bottom:8px; }
.update-item .who b { color:var(--text); }
.update-item .msg { font-size:14px; color:#111827; line-height:1.6; }
.update-item .note {
  background:#f9fafb; border-left:3px solid var(--primary);
  padding:10px 12px; margin-top:10px; border-radius:6px;
  font-size:13px; color:#4b5563; font-family: ui-monospace, monospace;
}

/* Profile header */
.profile-head {
  background: linear-gradient(135deg,#4f46e5 0%,#7c3aed 100%);
  padding:28px; border-radius:var(--radius); color:#fff;
  margin-bottom:22px; display:flex; align-items:center; gap:18px;
  flex-wrap:wrap;
}
.profile-head .avatar-lg {
  width:70px; height:70px; border-radius:50%; background:rgba(255,255,255,.2);
  display:flex; align-items:center; justify-content:center;
  font-size:24px; font-weight:700; flex-shrink:0;
}
.profile-head h2 { font-size:20px; margin-bottom:3px; }
.profile-head p { opacity:.85; font-size:13px; }

/* Empty state */
.empty {
  padding:40px 20px; text-align:center; color:var(--muted);
  font-size:14px;
}

/* Mobile */
@media (max-width:900px) {
  .sidebar {
    position:fixed; left:0; top:0; height:100vh; z-index:50;
    transform: translateX(-100%);
    box-shadow: 4px 0 20px rgba(0,0,0,.15);
  }
  .sidebar.open { transform: translateX(0); }
  .main { padding:20px 16px; }
  .menu-toggle { display:flex; }
  .topbar h1 { font-size:18px; }
  .cards { grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:12px; }
  .card { padding:16px; }
  .card .num { font-size:22px; }
  .grid-2 { grid-template-columns:1fr; }
  .form-box { padding:20px; }
  .detail-card { padding:18px; }
}