:root {
  --bg: #f4f7fb;
  --ink: #172033;
  --muted: #64748b;
  --panel: #ffffff;
  --line: #dce3ee;
  --blue: #2563eb;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
  --teal: #0f766e;
  --dark: #111827;
  --shadow: 0 18px 42px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.hidden {
  display: none !important;
}

.login-screen {
  display: grid;
  grid-template-columns: minmax(360px, 1.1fr) minmax(320px, 0.9fr);
  min-height: 100vh;
}

.login-visual {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
  padding: 56px;
  background:
    linear-gradient(rgba(17, 24, 39, 0.72), rgba(17, 24, 39, 0.7)),
    url("https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1400&q=80");
  background-position: center;
  background-size: cover;
  color: #ffffff;
}

.login-visual h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.6rem);
  line-height: 1;
}

.login-visual p {
  max-width: 620px;
  margin: 0;
  color: #dbeafe;
  font-size: 1.08rem;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: #38bdf8;
  color: #082f49;
  font-weight: 900;
}

.demo-logins {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.demo-logins button,
.user-card button,
.filter-button,
.secondary-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 40px;
  padding: 0 14px;
  background: #ffffff;
  color: var(--ink);
  font-weight: 800;
}

.demo-logins button {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
}

.login-panel {
  display: grid;
  place-items: center;
  padding: 32px;
}

.login-panel form,
.panel,
.metrics article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.login-panel form {
  display: grid;
  gap: 18px;
  width: min(420px, 100%);
  padding: 30px;
}

.app-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
  height: 100vh;
  padding: 26px;
  background: var(--dark);
  color: #ffffff;
}

.sidebar nav {
  display: grid;
  gap: 8px;
}

.sidebar a {
  border-radius: 8px;
  color: #cbd5e1;
  padding: 12px 14px;
  text-decoration: none;
}

.sidebar a.active,
.sidebar a:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
}

.user-card {
  display: grid;
  gap: 7px;
  margin-top: auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  padding: 16px;
}

.user-card span,
.user-card small {
  color: #94a3b8;
}

.main-content {
  display: grid;
  gap: 22px;
  padding: 28px;
}

.topbar,
.panel-heading,
.table-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.1;
}

.topbar h1 {
  margin-top: 6px;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

h2 {
  font-size: 1.25rem;
}

h3 {
  margin-bottom: 10px;
  color: #334155;
  font-size: 0.95rem;
}

.eyebrow,
.metrics span,
.metrics small {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.primary-button,
.action-button {
  border: 0;
  border-radius: 8px;
  min-height: 42px;
  padding: 0 16px;
  background: var(--blue);
  color: #ffffff;
  font-weight: 900;
}

.primary-button:hover {
  background: #1d4ed8;
}

.primary-button:disabled,
.action-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metrics article {
  padding: 20px;
}

.metrics strong {
  display: block;
  margin: 10px 0 8px;
  font-size: 2rem;
}

.grid.two {
  display: grid;
  grid-template-columns: minmax(340px, 0.9fr) minmax(340px, 1.1fr);
  gap: 22px;
}

.panel {
  padding: 22px;
}

#leaveForm {
  display: grid;
  gap: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
  color: #334155;
  font-size: 0.9rem;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  padding: 11px 12px;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--blue);
  outline: 3px solid rgba(37, 99, 235, 0.13);
}

.message {
  min-height: 22px;
  margin: 0;
  color: var(--teal);
  font-weight: 800;
}

.message.error {
  color: var(--red);
}

.pill,
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  min-height: 28px;
  padding: 0 10px;
  font-size: 0.78rem;
  font-weight: 900;
}

.pill {
  background: #ecfeff;
  color: var(--teal);
}

.badge.Pending {
  background: #fef3c7;
  color: var(--amber);
}

.badge.Approved {
  background: #dcfce7;
  color: var(--green);
}

.badge.Rejected {
  background: #fee2e2;
  color: var(--red);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

canvas {
  width: 100%;
  max-width: 340px;
  height: auto;
}

.filters,
.request-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-button.active {
  background: #dbeafe;
  color: #1d4ed8;
}

.table-wrap {
  margin-top: 18px;
  overflow-x: auto;
}

table {
  width: 100%;
  min-width: 860px;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 14px 10px;
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.employee-cell {
  display: grid;
  gap: 3px;
}

.employee-cell small,
.muted {
  color: var(--muted);
}

.action-button.approve {
  background: var(--green);
}

.action-button.reject {
  background: var(--red);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.team-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.team-card strong {
  display: block;
}

.balance-row {
  display: grid;
  gap: 7px;
  margin-top: 12px;
  font-size: 0.86rem;
}

.bar {
  height: 7px;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
}

.bar i {
  display: block;
  height: 100%;
  background: var(--teal);
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 22px;
  color: var(--muted);
  text-align: center;
}

@media (max-width: 1040px) {
  .login-screen,
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .sidebar nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .metrics,
  .grid.two,
  .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .login-visual,
  .login-panel,
  .main-content,
  .sidebar {
    padding: 18px;
  }

  .topbar,
  .panel-heading,
  .table-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .sidebar nav,
  .metrics,
  .grid.two,
  .form-grid,
  .chart-grid,
  .team-grid {
    grid-template-columns: 1fr;
  }
}