:root {
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  /* HTL Brand Colors */
  --accent: #003DA5;           /* Deep Blue */
  --accent-light: #0052CC;     /* Brighter Blue */
  --accent-lighter: #1B7EFF;   /* Light Blue */
  --accent-green: #6ABF2E;     /* HTL Green */
  --accent-green-light: #8FD63F;/* Light Green */
  --muted: #6B7280;
  --text: #1F2937;
  --text-light: #4B5563;
  --bg-white: #FFFFFF;
  --bg-gray: #F3F4F6;
  --bg-blue-light: #E8F0FF;
  --border: #D1D5DB;
  --shadow: 0 10px 30px rgba(0, 61, 165, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 61, 165, 0.06);
}

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

a {
  color: inherit;
}

a,
button,
input,
select {
  font-family: var(--font-sans);
}

body {
  font-family: var(--font-sans);
  color: var(--text);
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 16px 28px;
  border-bottom: 4px solid var(--accent);
  background: transparent;
  position: sticky;
  top: 0;
  box-shadow: 0 4px 16px rgba(0, 61, 165, 0.12);
  z-index: 10;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  box-shadow: 0 6px 16px rgba(0, 61, 165, 0.25);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-inverse);
  font-size: 20px;
}

.htl-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.htl-logo:hover {
  transform: scale(1.05);
}

.htl-logo svg {
  width: 36px;
  height: 36px;
  display: block;
}

.htl-logo-img {
  display: inline-block;
  width: 88px;
  height: 58px;
  object-fit: contain;
  border-radius: 0;
}

.site-header .brand-meta {
  font-size: 12px;
}

.site-header .brand-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
}

.header-actions .btn {
  padding: 10px 14px;
}

.brand-meta {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
}

.brand-title {
  font-weight: 700;
  font-size: 18px;
  color: var(--text);
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-left: auto;
}

.site-footer {
  padding: 24px 28px;
  text-align: center;
  color: var(--muted);
  border-top: 2px solid var(--border);
  background: var(--bg-gray);
  margin-top: 48px;
  font-size: 13px;
}

.site-footer a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.site-footer a:hover {
  color: var(--text);
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  font-weight: 600;
  padding: 11px 18px;
  transition: all 0.2s ease;
  font-size: 14px;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary-contrast);
  box-shadow: 0 6px 16px rgba(0, 61, 165, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 22px rgba(0, 61, 165, 0.4);
  transform: translateY(-2px);
}

.btn-success {
  background: linear-gradient(135deg, #15803d, #22c55e);
  color: white;
  box-shadow: 0 6px 16px rgba(21, 128, 61, 0.3);
}

.btn-success:hover {
  box-shadow: 0 8px 22px rgba(21, 128, 61, 0.4);
  transform: translateY(-2px);
}

.btn-danger {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  color: var(--danger-contrast);
  box-shadow: 0 6px 16px rgba(220, 38, 38, 0.25);
}

.btn-danger:hover {
  box-shadow: 0 8px 22px rgba(220, 38, 38, 0.35);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-gray);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--bg-blue-light);
  border-color: var(--accent-light);
  color: var(--accent);
}

.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover {
  background: var(--bg-gray);
  border-color: var(--accent);
  color: var(--accent);
}

.mobile-nav-toggle {
  display: none;
}

.link-back {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.link-back:hover {
  color: var(--text);
}

.page-shell {
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  padding: 28px 24px;
  background: transparent;
}

/* Centering container used by layout.ejs to constrain content */
.app-container {
  width: 100%;
  max-width: 1100px;
  padding-left: 8px;
  padding-right: 8px;
}

/* Cards and containers */
.card {
  background: transparent;
  border: 1px solid rgba(209, 213, 219, 0.65);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: 0 14px 32px rgba(37, 99, 235, 0.12);
  border-color: var(--accent-lighter);
}

/* Forms */
.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.form-input,
.form-select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--bg-white);
  color: var(--text);
  transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  background: var(--bg-blue-light);
}

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

/* Utilities */
.text-muted {
  color: var(--muted);
}

.text-accent {
  color: var(--accent);
}

.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }

.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.mb-lg { margin-bottom: 24px; }