* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  background: #0b0f14;
  color: #e6edf3;
}

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

/* SIDEBAR */
.sidebar {
  width: 220px;
  background: linear-gradient(180deg, #0f1620, #0b0f14);
  padding: 20px;
}

.logo {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 30px;
}

.sidebar nav a {
  display: block;
  padding: 10px 12px;
  color: #9aa4b2;
  text-decoration: none;
  border-radius: 8px;
  margin-bottom: 6px;
  font-size: 14px;
}

.sidebar nav a.active,
.sidebar nav a:hover {
  background: #121a26;
  color: #ffffff;
}

/* MAIN */
.main {
  flex: 1;
  padding: 30px;
}

/* PAGE */
.page {
  display: none;
}

.page.active {
  display: block;
}

/* HEADER */
.page-header h1 {
  font-size: 26px;
}

.subtitle {
  font-size: 13px;
  color: #8b949e;
}

/* STATS */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-top: 25px;
}

.stat-card {
  background: linear-gradient(180deg, #121a26, #0e141d);
  border: 1px solid #1c2533;
  border-radius: 14px;
  padding: 20px;
}

.stat-card span {
  font-size: 13px;
  color: #9aa4b2;
}

.stat-card strong {
  display: block;
  font-size: 28px;
  margin-top: 8px;
}

/* TABLE */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 25px;
}

th, td {
  padding: 12px;
  border-bottom: 1px solid #1c2533;
  text-align: left;
}

th {
  color: #9aa4b2;
  font-size: 13px;
}

/* BADGE */
.badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
}

.badge.active {
  background: #00c853;
  color: #003300;
}

/* FORM */
input, textarea {
  width: 100%;
  margin-top: 15px;
  padding: 12px;
  background: #0e141d;
  border: 1px solid #1c2533;
  border-radius: 10px;
  color: #fff;
}

textarea {
  min-height: 120px;
}

button {
  margin-top: 15px;
  padding: 12px 18px;
  background: linear-gradient(135deg, #00e5ff, #00bcd4);
  border: none;
  border-radius: 10px;
  font-weight: bold;
  cursor: pointer;
}