:root {
  --bg: #eef0f3;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0f8db8;
  --primary-dark: #0a6a89;
  --border: #d1d5db;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", Tahoma, sans-serif; color: var(--text); }

.login-body {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 58% 42%;
  background: var(--bg);
}

.login-left {
  background: linear-gradient(160deg, #dde3ea 0%, #e8edf2 60%, #f3f5f8 100%);
}

.login-right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-card {
  width: min(520px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 2rem;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.2rem;
}

.brand-icon {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.2rem;
  display: grid;
  place-items: center;
}

.brand h1 { margin: 0; font-size: 1.6rem; color: var(--primary-dark); }
.brand p { margin: .2rem 0 0 0; color: var(--muted); }

h2 { margin: .2rem 0 1rem; }
.form { display: grid; gap: .6rem; }
label { font-size: .9rem; color: var(--muted); }
input {
  width: 100%;
  padding: .75rem .8rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 1rem;
}
input:focus { outline: 2px solid #b9e2f0; border-color: var(--primary); }
button {
  margin-top: .6rem;
  border: 0;
  padding: .8rem 1rem;
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
button:hover { background: var(--primary-dark); }
.alert {
  background: #fff3f1;
  color: #9b1c1c;
  border: 1px solid #f6c3bf;
  border-radius: 6px;
  padding: .65rem .8rem;
  margin-bottom: .8rem;
}
footer { margin-top: 1.2rem; color: var(--muted); font-size: .85rem; }

.app-body {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
  background: #f4f7fb;
}
.sidebar {
  background: #fff;
  border-right: 1px solid var(--border);
  padding: 1.2rem;
}
.logo {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--primary);
  color: white;
  font-weight: 700;
  margin-bottom: .7rem;
}
.sidebar-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 1.2rem; }
.sidebar nav { display: grid; gap: .45rem; }
.sidebar nav a {
  text-decoration: none;
  color: #374151;
  padding: .55rem .7rem;
  border-radius: 6px;
}
.sidebar nav a.active,
.sidebar nav a:hover { background: #e7f5fb; color: #0c6c8c; }

.content { padding: 1.4rem 1.6rem; }
.content header h1 { margin: 0 0 .2rem; }
.content header p { margin: 0; color: var(--muted); }
.cards {
  margin-top: 1.3rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  gap: 1rem;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
}
.card h3 { margin: 0 0 .35rem; color: var(--muted); }
.card p { margin: 0; font-size: 1.8rem; font-weight: 700; color: var(--primary-dark); }

.panel {
  margin-top: 1.1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem 1.2rem;
}
.panel h2 { margin-top: 0; }

@media (max-width: 1000px) {
  .login-body { grid-template-columns: 1fr; }
  .login-left { display: none; }
  .app-body { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--border); }
  .cards { grid-template-columns: 1fr; }
}