:root {
  --bg: #f3f4f6; /* Neutral light gray background */
  --card-bg: #ffffff;
  --border: #d1d5db; /* Corporate solid light border */
  
  --text-dark: #111827; /* Dark slate text */
  --text-normal: #374151; /* Standard body text */
  --text-muted: #6b7280; /* Gray muted text */
  
  --primary: #ff8300; /* Aruba Orange Brand Color */
  --primary-hover: #e06b00;
  --primary-light: #ffeacc;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;

  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --danger-border: #fecaca;

  --warning: #d97706;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --warning-text: #92400e;

  --transition: all 0.1s ease-in-out;
  --shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05); /* Minimal shadow for flat enterprise panels */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans Thai', sans-serif;
  background-color: var(--bg);
  color: var(--text-normal);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  line-height: 1.45;
}

/* Aruba style dark header console */
header {
  width: 100%;
  background: #232830; /* Dark console grey */
  border-bottom: 3px solid var(--primary); /* Aruba bottom brand border */
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.25rem 0;
}

.nav-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.brand-logo {
  height: 28px;
  width: auto;
  object-fit: contain;
  display: block;
}

.brand-text {
  color: #ffffff; /* White brand text on dark header */
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.brand-text span {
  color: var(--primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Language selector for dark header */
.lang-selector {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: #9ca3af;
  text-decoration: none;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  border: 1px solid #4b5563;
  background-color: #2a303c;
  transition: var(--transition);
}

.lang-selector:hover {
  color: #ffffff;
  border-color: #9ca3af;
  background-color: #374151;
}

/* Logout button for dark header */
.btn-logout {
  background-color: transparent;
  color: #9ca3af;
  border: 1px solid #4b5563;
  padding: 0.35rem 0.65rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.btn-logout:hover {
  background-color: #ef4444;
  color: #ffffff;
  border-color: #f87171;
}

main {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Page Header - Clean & Compact */
.page-header {
  text-align: left; /* Corporate left-align */
  margin-bottom: 1.5rem;
  width: 100%;
  max-width: 580px;
  border-left: 4px solid var(--primary); /* Accent indicator */
  padding-left: 1rem;
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: -0.01em;
}

.page-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Flat Enterprise Panel/Card */
.app-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px; /* Sharp professional corners */
  padding: 1.5rem;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 580px;
  margin-bottom: 1.25rem;
}

.card-header-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid #f3f4f6;
  padding-bottom: 0.75rem;
}

.card-icon-container {
  width: 32px;
  height: 32px;
  background-color: #f3f4f6;
  color: var(--text-normal);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.card-title-group {
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.card-description {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-normal);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-left {
  position: absolute;
  left: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-input-clean {
  width: 100%;
  padding: 0.5rem 0.75rem 0.5rem 2.25rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace; /* Monospaced ID field */
  color: var(--text-dark);
  outline: none;
  background-color: #ffffff;
  transition: var(--transition);
}

.form-input-clean:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(255, 131, 0, 0.15);
}

.btn-primary-clean {
  font-family: inherit;
  width: 100%;
  padding: 0.6rem 1.25rem;
  background-color: #232830; /* Corporate dark slate action button */
  color: #ffffff;
  border: 1px solid #1f2937;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary-clean:hover {
  background-color: var(--primary); /* Aruba Orange hover */
  border-color: var(--primary-hover);
}

.form-footer-note {
  margin-top: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Arrow Flow */
.flow-arrow {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0.25rem 0 0.75rem 0;
  color: var(--border);
}

.flow-arrow svg {
  width: 20px;
  height: 20px;
}

/* Success Card */
.success-card {
  border-left: 4px solid var(--success); /* Solid green indicator stripe */
}

.success-card .card-icon-container {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid var(--success-border);
}

/* Dynamic IP Box (Enterprise Terminal Style) */
.ip-box-container {
  background: #fafafa;
  border: 1px dashed var(--border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.ip-box-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ip-box-icon {
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

.ip-text {
  font-size: 1.15rem;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-weight: 700;
  color: var(--text-dark);
  word-break: break-all;
}

.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.3rem 0.5rem;
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-normal);
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
}

.btn-copy:hover {
  background-color: #f3f4f6;
  border-color: #9ca3af;
}

.btn-copy.copied {
  background-color: var(--success-bg);
  color: var(--success);
  border-color: var(--success-border);
}

/* Info Box */
.info-box {
  background-color: #f0f7ff;
  border: 1px solid #bfdbfe;
  border-radius: 4px;
  padding: 0.6rem 0.8rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.75rem;
  color: #1e40af;
}

.info-box svg {
  flex-shrink: 0;
  margin-top: 1px;
}

/* Warning Card */
.warning-card {
  border-left: 4px solid var(--warning); /* Solid amber indicator stripe */
}

.warning-icon-container {
  background-color: rgba(217, 119, 6, 0.1);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

.warning-title {
  color: var(--warning-text);
  font-weight: 600;
}

.warning-details {
  font-size: 0.8rem;
  color: var(--text-normal);
  margin-bottom: 1rem;
  background: #fffbeb;
  border: 1px solid var(--warning-border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
}

.warning-steps-header {
  font-weight: 700;
  color: var(--warning-text);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.warning-details ul {
  padding-left: 1.1rem;
}

.warning-details li {
  margin-bottom: 0.25rem;
}

.btn-warning-action {
  background-color: #232830;
  border-color: #1f2937;
}

.btn-warning-action:hover {
  background-color: var(--warning);
  border-color: var(--warning);
}

/* Error Card */
.error-card-container {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-left: 4px solid var(--danger);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 580px;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow);
}

.error-left {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.error-icon {
  width: 28px;
  height: 28px;
  border-radius: 4px;
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.error-title-group {
  display: flex;
  flex-direction: column;
}

.error-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--danger);
}

.error-desc {
  font-size: 0.75rem;
  color: var(--text-normal);
}

.btn-retry {
  background: #ffffff;
  border: 1px solid var(--danger-border);
  border-radius: 4px;
  color: var(--danger);
  padding: 0.3rem 0.6rem;
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  text-transform: uppercase;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-retry:hover {
  background-color: var(--danger-bg);
}

/* Steps Guide Section */
.steps-section {
  width: 100%;
  max-width: 580px;
  margin-top: 1rem;
}

.steps-section-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.steps-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.step-card {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid #f3f4f6;
}

.step-card:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.step-icon-wrapper {
  width: 28px;
  height: 28px;
  background-color: #f3f4f6;
  color: var(--text-normal);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.step-card-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.125rem;
}

.step-card-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.step-divider {
  display: none;
}

/* Footer */
footer {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background-color: transparent;
}