:root {
  --navy-dark: #0a1a33;
  --navy: #0f2547;
  --blue: #1d63c9;
  --blue-mid: #2f7fe0;
  --cyan: #4fd4e8;
  --bg: #f3f6fb;
  --bg-card: #ffffff;
  --text: #1c2733;
  --muted: #6b7788;
  --border: #dfe6ef;
  --white: #ffffff;
  --danger: #b3382f;
  --danger-bg: #fbe9e8;
  --success: #1f8a52;
  --success-bg: #e6f5ec;
  --warn: #a3670a;
  --warn-bg: #fbf1dc;
  --info-bg: #e9edf3;
  --radius: 12px;
  --shadow: 0 2px 10px rgba(15, 37, 71, 0.08), 0 1px 3px rgba(15, 37, 71, 0.06);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Poppins', var(--font-body);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
.hidden { display: none !important; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; }
a { color: var(--blue); }

/* ---------- Login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at top, var(--navy) 0%, var(--navy-dark) 70%);
  padding: 20px;
}
.login-card {
  background: #0d1f3c;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
  text-align: center;
}
.login-logo { width: 240px; max-width: 100%; margin-bottom: 4px; }
.login-sub { color: #9fb0c9; font-size: 13px; margin: 0 0 24px; letter-spacing: 0.02em; }
.login-card form { text-align: left; }
.login-card label { display: block; font-size: 12.5px; font-weight: 600; color: #9fb0c9; margin: 14px 0 5px; }
.login-card input {
  width: 100%; padding: 10px 12px; border: 1px solid rgba(255,255,255,0.15); border-radius: 8px; font-size: 14px;
  background: rgba(255,255,255,0.06); color: var(--white);
}
.login-card input::placeholder { color: #6b7fa0; }
.login-card input:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(79,212,232,0.18); }
.login-hint { font-size: 11.5px; color: #9fb0c9; margin-top: 18px; }
.form-error {
  background: var(--danger-bg); color: var(--danger); font-size: 12.5px; padding: 8px 10px;
  border-radius: 8px; margin-top: 14px;
}

/* ---------- Buttons ---------- */
.btn {
  border: none; border-radius: 8px; padding: 9px 16px; font-size: 13.5px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px; transition: filter .15s, background .15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { filter: brightness(1.1); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--info-bg); }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-danger:hover { filter: brightness(0.97); }
.btn-sm { padding: 6px 11px; font-size: 12.5px; }
.btn-block { width: 100%; justify-content: center; margin-top: 20px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.icon-btn {
  background: transparent; border: none; font-size: 20px; color: var(--text); padding: 6px 10px; border-radius: 8px;
}
.icon-btn:hover { background: var(--info-bg); }
.notif-btn { position: relative; }
.notif-badge {
  position: absolute; top: 2px; right: 2px; background: var(--danger); color: var(--white);
  font-size: 10px; font-weight: 700; line-height: 1; padding: 3px 5px; border-radius: 20px; min-width: 16px; text-align: center;
}

/* ---------- App shell ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 230px; background: var(--navy); color: #dce6f5; display: flex; flex-direction: column;
  flex-shrink: 0; position: sticky; top: 0; height: 100vh;
}
.sidebar-brand { padding: 22px 18px 14px; }
.sidebar-brand img { width: 100%; max-width: 175px; display: block; }
.sidebar-nav { flex: 1; overflow-y: auto; padding: 6px 10px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; color: rgba(220,230,245,0.85);
  font-size: 13.5px; font-weight: 500; cursor: pointer; margin-bottom: 2px; text-decoration: none;
}
.nav-item:hover { background: rgba(255,255,255,0.08); }
.nav-item.active { background: var(--blue-mid); color: var(--white); font-weight: 700; }
.nav-item .ico { font-size: 16px; width: 18px; text-align: center; }
.sidebar-user { padding: 14px 18px; border-top: 1px solid rgba(255,255,255,0.12); font-size: 12px; color: rgba(220,230,245,0.7); }
.sidebar-user b { color: var(--white); display: block; font-size: 13px; }

.main-col { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 12px; padding: 14px 24px; background: var(--white);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 20;
}
.topbar-logo { height: 32px; width: auto; display: block; }
.topbar h1 { font-family: var(--font-display); font-size: 20px; margin: 0; flex: 1; color: var(--navy); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-user-name { font-size: 13px; color: var(--muted); }
.mobile-only { display: none; }
.app-content { padding: 22px 24px 60px; flex: 1; }

.sidebar-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 29; }

/* ---------- Cards / layout ---------- */
.card { background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; margin-bottom: 18px; }
.card-title { font-family: var(--font-display); font-size: 17px; margin: 0 0 14px; color: var(--navy); }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.stat-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.stat-card {
  flex: 1; min-width: 160px; background: var(--bg-card); border-radius: var(--radius); padding: 16px 18px;
  box-shadow: var(--shadow); border-left: 4px solid var(--blue-mid);
}
.stat-card .label { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.stat-card .value { font-family: var(--font-display); font-size: 26px; color: var(--navy); margin-top: 4px; }

/* ---------- Forms ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; font-weight: 600; color: var(--muted); margin-bottom: 5px; }
.field .hint, .hint { font-size: 11px; color: var(--muted); margin-top: 3px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; font-size: 13.5px; color: var(--text);
  background: var(--white);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--blue-mid); box-shadow: 0 0 0 3px rgba(47,127,224,0.18); }
.field textarea { resize: vertical; min-height: 70px; }
.form-row { display: flex; gap: 14px; flex-wrap: wrap; }
.form-row .field { flex: 1; min-width: 180px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.tbl th { text-align: left; padding: 9px 10px; color: var(--muted); font-weight: 600; font-size: 11.5px;
  text-transform: uppercase; letter-spacing: .03em; border-bottom: 2px solid var(--border); white-space: nowrap; }
table.tbl td { padding: 10px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.tbl tr:hover td { background: var(--bg); }
table.tbl tr.clickable { cursor: pointer; }
.clickable { cursor: pointer; }
.empty-state { text-align: center; padding: 40px 20px; color: var(--muted); font-size: 13.5px; }

/* ---------- Badges ---------- */
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 11px; font-weight: 700; letter-spacing: .02em; }
.badge-green { background: var(--success-bg); color: var(--success); }
.badge-gold { background: var(--warn-bg); color: var(--warn); }
.badge-red { background: var(--danger-bg); color: var(--danger); }
.badge-gray { background: var(--info-bg); color: var(--muted); }

/* ---------- Toolbar ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar .search-input { flex: 1; min-width: 200px; }
.toolbar input, .toolbar select { padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13.5px; }
.spacer { flex: 1; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 18px; overflow-x: auto; }
.tab-btn { padding: 10px 16px; border: none; background: transparent; font-size: 13.5px; font-weight: 600; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -2px; white-space: nowrap; }
.tab-btn.active { color: var(--blue); border-bottom-color: var(--blue-mid); }

/* ---------- Modal ---------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(10,26,51,0.5); display: flex; align-items: flex-start;
  justify-content: center; z-index: 100; padding: 30px 16px; overflow-y: auto; }
.modal {
  background: var(--white); border-radius: var(--radius); width: 100%; max-width: 640px; box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  animation: modalIn .15s ease-out;
}
.modal.modal-lg { max-width: 860px; }
@keyframes modalIn { from { opacity: 0; transform: translateY(8px);} to { opacity: 1; transform: translateY(0);} }
.modal-header { display: flex; align-items: center; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.modal-header h2 { font-family: var(--font-display); font-size: 18px; margin: 0; flex: 1; color: var(--navy); }
.modal-body { padding: 20px 22px; max-height: 70vh; overflow-y: auto; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 16px 22px; border-top: 1px solid var(--border); }

/* ---------- Toast ---------- */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast { background: var(--navy); color: var(--white); padding: 12px 16px; border-radius: 8px; font-size: 13.5px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25); max-width: 320px; animation: toastIn .15s ease-out; }
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px);} to { opacity: 1; transform: translateY(0);} }

/* ---------- Section headers ---------- */
.section-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.section-head h2 { font-family: var(--font-display); font-size: 19px; margin: 0; color: var(--navy); flex: 1; }

/* ---------- Misc ---------- */
.muted { color: var(--muted); }
.mono { font-family: 'Courier New', monospace; }
.text-right { text-align: right; }
.flex { display: flex; align-items: center; gap: 8px; }
.divider { height: 1px; background: var(--border); margin: 16px 0; }
.k-value { font-size: 13.5px; }
.k-label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; margin-bottom: 2px; }
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px 18px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .sidebar { position: fixed; left: 0; top: 0; z-index: 30; transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: translateX(0); }
  .mobile-only { display: inline-flex; }
  .topbar { padding: 12px 14px; gap: 10px; }
  .topbar h1 { font-size: 17px; }
  .app-content { padding: 16px 14px 50px; }
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .modal-body { max-height: 65vh; }
}
@media (max-width: 520px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .topbar-logo { height: 26px; }
  .topbar-user-name { display: none; }
  .card { padding: 16px; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .stat-card { min-width: 100%; }
}