:root {
  --color-primary: #d35400;          /* dark orange */
  --color-primary-700: #b34700;
  --color-primary-500: #ff7a1a;
  --color-primary-300: #ffa366;
  --color-primary-50: #fff5eb;

  --color-surface: #ffffff;          /* light white surfaces */
  --color-surface-2: #f7f7f9;        /* subtle page background */
  --color-border: #e5e7eb;           /* soft borders */
  --color-text-dark: #1a1a1a;        /* primary text */
  --color-text-muted: #6b7280;       /* muted text */
  --shadow-color: rgba(0, 0, 0, 0.12);
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: linear-gradient(135deg, #fff 0%, var(--color-surface-2) 55%, #fff2e6 100%);
  color: var(--color-text-dark);
  font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
}

/* Global layout (AdminLTE overrides) */
.main-header .navbar,
.main-header .logo {
  background: linear-gradient(180deg, var(--color-primary-500), var(--color-primary));
  color: #fff !important;
}
.main-header .navbar a,
.main-header .logo a { color: #fff !important; }

.content-wrapper { background: var(--color-surface-2); }

.main-sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
}

.sidebar-menu > li > a { color: var(--color-text-dark) !important; }
.sidebar-menu > li.active > a,
.sidebar-menu > li > a:hover { color: var(--color-primary) !important; }

.box, .info-box, .small-box { background: var(--color-surface); border: 1px solid var(--color-border); }
.box-header.with-border { border-bottom: 1px solid var(--color-border); }
.box-primary { border-top: 3px solid var(--color-primary); }

.btn-primary, .bg-orange, .btn-register {
  background: linear-gradient(180deg, var(--color-primary-500), var(--color-primary));
  color: #fff !important;
  border: none;
}
.btn-info { background: #ffd9bf; color: var(--color-primary) !important; border: 1px solid #ffcca6; }

.label-primary, .badge-primary { background: var(--color-primary); }
.text-muted { color: var(--color-text-muted) !important; }

.register-container {
  max-width: 980px;
  margin: 32px auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  box-shadow: 0 20px 40px var(--shadow-color);
  overflow: hidden;
}

.register-header {
  background: linear-gradient(180deg, var(--color-primary-500), var(--color-primary));
  padding: 30px 28px;
  color: #fff;
}

.register-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

.register-header .brand .logo {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: #fff;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.register-header h1 {
  margin: 16px 0 6px;
  font-size: 28px;
}

.register-header p {
  margin: 0;
  color: #fff3e8;
}

.register-body {
  padding: 26px;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--color-text-dark);
  margin: 18px 0 12px;
}

.section-title::before {
  content: "";
  width: 6px;
  height: 20px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--color-primary-300), var(--color-primary));
}

.form-group {
  margin-bottom: 16px;
}

.form-control,
.select2-container .select2-selection--single {
  background: var(--color-surface);
  color: var(--color-text-dark);
  border: 1px solid var(--color-border);
  border-radius: 12px !important;
  padding: 10px 12px;
}

.form-control::placeholder {
  color: var(--color-muted);
}

.input-group-text {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.btn-register,
.btn-primary {
  background: linear-gradient(180deg, var(--color-primary-500), var(--color-primary));
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 12px;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(211, 84, 0, 0.35);
  transition: transform 0.08s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.btn-register:hover,
.btn-primary:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn-register:active,
.btn-primary:active {
  transform: translateY(0);
}

.alert {
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.alert-danger {
  background: #fff4ef;
  color: #7a2e00;
  border-color: #ffd9bf;
}

.alert-success {
  background: #ecfdf5;
  color: #065f46;
  border-color: #a7f3d0;
}

.text-muted { color: var(--color-muted) !important; }

.back-to-login a {
  color: var(--color-primary-300);
  font-weight: 600;
}

.back-to-login a:hover {
  color: var(--color-primary-500);
}

@media (max-width: 992px) {
  .register-container { margin: 22px; }
  .register-header { padding: 24px; }
}

@media (max-width: 768px) {
  .register-container { margin: 16px; }
  .register-header h1 { font-size: 24px; }
}

@media (max-width: 480px) {
  .register-header { padding: 20px; }
  .register-body { padding: 18px; }
  .btn-register { width: 100%; }
}