* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f4f6f9;
  color: #222;
}

/* ---- Login page ---- */
.login-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
}

.login-card {
  background: #fff;
  padding: 32px;
  border-radius: 14px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.login-card .sub { margin: 0 0 20px; color: #666; font-size: 13px; }

.login-card label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 600; }
.login-card input {
  width: 100%;
  padding: 10px;
  margin-bottom: 16px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.login-card button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: #2c5364;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.error { color: #a41616; font-size: 13px; margin-top: 10px; }
.hidden { display: none !important; }
.back-link { display: block; text-align: center; margin-top: 16px; font-size: 13px; color: #666; text-decoration: none; }

/* ---- Dashboard ---- */
.topbar {
  background: #203a43;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
}
.topbar h1 { margin: 0; font-size: 18px; }
.topbar button {
  background: #e74c3c;
  border: none;
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
}

.tabs {
  display: flex;
  gap: 8px;
  padding: 16px 24px 0;
  background: #fff;
  border-bottom: 1px solid #e0e0e0;
}
.tab-btn {
  border: none;
  background: none;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  border-bottom: 3px solid transparent;
  color: #555;
}
.tab-btn.active {
  color: #203a43;
  font-weight: 700;
  border-bottom-color: #2c5364;
}

.content { padding: 24px; max-width: 1000px; margin: 0 auto; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.panel {
  background: #fff;
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}
.panel h2 { margin-top: 0; font-size: 16px; }

.inline-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.inline-form input, .inline-form select {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  flex: 1;
  min-width: 150px;
}
.inline-form button {
  padding: 10px 20px;
  background: #2c5364;
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.hint { font-size: 13px; color: #666; }

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}
th, td {
  text-align: left;
  padding: 10px;
  border-bottom: 1px solid #eee;
  font-size: 14px;
}
th { background: #f7f9fb; }

.btn-small {
  padding: 6px 10px;
  font-size: 12px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  margin-right: 4px;
}
.btn-danger { background: #ffdada; color: #a41616; }
.btn-primary { background: #d4e6f7; color: #1a4d80; }

#filter-siswa-kelas, #filter-meeting-kelas {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  margin-bottom: 10px;
}

#import-result { margin-top: 12px; font-size: 13px; }