/* GTI shared design tokens and components */
:root {
  --gti-color-primary: #0d9488;
  --gti-color-primary-hover: #0f766e;
  --gti-color-primary-soft: #ccfbf1;
  --gti-color-text: #111827;
  --gti-color-text-muted: #6b7280;
  --gti-color-border: #e5e7eb;
  --gti-color-bg: #ffffff;
  --gti-color-bg-soft: #f9fafb;
  --gti-color-success: #059669;
  --gti-color-danger: #dc2626;
  --gti-color-warning: #d97706;
  --gti-color-info: #2563eb;

  --gti-font-sans: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --gti-font-size-base: 14px;
  --gti-line-height: 1.55;

  --gti-space-1: 4px;
  --gti-space-2: 8px;
  --gti-space-3: 12px;
  --gti-space-4: 16px;
  --gti-space-6: 24px;
  --gti-space-8: 32px;

  --gti-radius: 6px;
  --gti-radius-lg: 10px;
  --gti-shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);

  --gti-container-max: 1140px;
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--gti-font-sans);
  font-size: var(--gti-font-size-base);
  line-height: var(--gti-line-height);
  color: var(--gti-color-text);
  background: var(--gti-color-bg-soft);
}

a { color: var(--gti-color-primary); text-decoration: none; }
a:hover { color: var(--gti-color-primary-hover); text-decoration: underline; }

h1, h2, h3 { color: var(--gti-color-text); margin: 0 0 var(--gti-space-3); line-height: 1.3; }
h1 { font-size: 22px; font-weight: 600; }
h2 { font-size: 18px; font-weight: 600; }
h3 { font-size: 15px; font-weight: 600; }

p { margin: 0 0 var(--gti-space-3); }

.gti-container {
  max-width: var(--gti-container-max);
  margin: 0 auto;
  padding: 0 var(--gti-space-4);
}

.gti-main {
  padding-top: var(--gti-space-6);
  padding-bottom: var(--gti-space-8);
}

/* Primary nav */
.gti-nav-primary {
  background: var(--gti-color-bg);
  border-bottom: 1px solid var(--gti-color-border);
}
.gti-nav-primary .gti-container {
  display: flex;
  align-items: center;
  gap: var(--gti-space-6);
  height: 52px;
}
.gti-nav-brand {
  font-weight: 700;
  font-size: 16px;
  color: var(--gti-color-primary);
  letter-spacing: 0.5px;
}
.gti-nav-brand:hover { text-decoration: none; }

.gti-nav-tabs {
  display: flex;
  gap: var(--gti-space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}
.gti-nav-link {
  color: var(--gti-color-text-muted);
  padding: var(--gti-space-2) 0;
  border-bottom: 2px solid transparent;
  display: inline-block;
}
.gti-nav-link:hover { color: var(--gti-color-text); text-decoration: none; }
.gti-nav-link-active {
  color: var(--gti-color-primary);
  border-bottom-color: var(--gti-color-primary);
}
.gti-nav-primary .gti-user-menu { margin-left: auto; }

/* User menu */
.gti-user-menu { display: flex; align-items: center; gap: var(--gti-space-3); position: relative; }
.gti-user-menu-button {
  background: transparent;
  border: 0;
  font: inherit;
  color: var(--gti-color-text);
  display: inline-flex;
  align-items: center;
  gap: var(--gti-space-2);
  cursor: pointer;
  padding: var(--gti-space-2);
}
.gti-user-menu-initial {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gti-color-primary-soft);
  color: var(--gti-color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 13px;
}
.gti-user-menu-dropdown {
  position: absolute;
  right: 0;
  top: 100%;
  background: var(--gti-color-bg);
  border: 1px solid var(--gti-color-border);
  border-radius: var(--gti-radius);
  box-shadow: var(--gti-shadow-sm);
  min-width: 200px;
  list-style: none;
  margin: 0;
  padding: var(--gti-space-2) 0;
  display: none;
  z-index: 10;
}
.gti-user-menu-dropdown.open { display: block; }
.gti-user-menu-dropdown a {
  display: block;
  padding: var(--gti-space-2) var(--gti-space-4);
  color: var(--gti-color-text);
}
.gti-user-menu-dropdown a:hover {
  background: var(--gti-color-bg-soft);
  text-decoration: none;
}

/* Secondary nav */
.gti-nav-secondary {
  background: var(--gti-color-bg-soft);
  border-bottom: 1px solid var(--gti-color-border);
}
.gti-nav-secondary .gti-container {
  display: flex;
  gap: var(--gti-space-4);
  height: 40px;
  align-items: center;
  font-size: 13px;
}

/* Page header */
.gti-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--gti-space-4);
  margin-bottom: var(--gti-space-4);
}
.gti-page-header .gti-page-subtitle {
  color: var(--gti-color-text-muted);
  margin-top: calc(-1 * var(--gti-space-2));
}

/* Cards & sections */
.gti-card {
  background: var(--gti-color-bg);
  border: 1px solid var(--gti-color-border);
  border-radius: var(--gti-radius-lg);
  padding: var(--gti-space-6);
  margin-bottom: var(--gti-space-4);
  box-shadow: var(--gti-shadow-sm);
}
.gti-section-title { margin-top: 0; }

/* Buttons */
.gti-btn {
  display: inline-block;
  font-weight: 500;
  border-radius: var(--gti-radius);
  padding: var(--gti-space-2) var(--gti-space-4);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.2;
  font-size: 14px;
}
.gti-btn:hover { text-decoration: none; }
.gti-btn-sm { padding: 4px 10px; font-size: 13px; }

.gti-btn-primary {
  background: var(--gti-color-primary);
  color: #fff;
  border-color: var(--gti-color-primary);
}
.gti-btn-primary:hover {
  background: var(--gti-color-primary-hover);
  border-color: var(--gti-color-primary-hover);
  color: #fff;
}
.gti-btn-ghost {
  background: transparent;
  color: var(--gti-color-text);
  border-color: var(--gti-color-border);
}
.gti-btn-ghost:hover {
  background: var(--gti-color-bg-soft);
  color: var(--gti-color-text);
}
.gti-btn-danger {
  background: var(--gti-color-danger);
  color: #fff;
  border-color: var(--gti-color-danger);
}
.gti-btn-danger:hover { background: #b91c1c; color: #fff; }

/* Forms */
.gti-field { margin-bottom: var(--gti-space-4); }
.gti-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--gti-space-1);
  color: var(--gti-color-text);
}
.gti-input, .gti-select, .gti-textarea {
  width: 100%;
  padding: var(--gti-space-2) var(--gti-space-3);
  border: 1px solid var(--gti-color-border);
  border-radius: var(--gti-radius);
  font: inherit;
  color: var(--gti-color-text);
  background: var(--gti-color-bg);
}
.gti-input:focus, .gti-select:focus, .gti-textarea:focus {
  outline: 2px solid var(--gti-color-primary);
  outline-offset: -1px;
  border-color: var(--gti-color-primary);
}
.gti-field-errors {
  color: var(--gti-color-danger);
  font-size: 13px;
  margin-top: var(--gti-space-1);
}

/* Form primitives */
.gti-required { color: var(--gti-color-danger); margin-left: 2px; }
.gti-help {
  color: var(--gti-color-text-muted);
  font-size: 12px;
  margin: var(--gti-space-1) 0 0;
}
.gti-checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--gti-space-2) var(--gti-space-4);
}
.gti-checkbox-row {
  display: inline-flex;
  align-items: center;
  gap: var(--gti-space-2);
  font-weight: 400;
  cursor: pointer;
  padding: var(--gti-space-1) 0;
}
.gti-checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--gti-color-primary);
}
.gti-form-actions {
  margin-top: var(--gti-space-4);
  display: flex;
  gap: var(--gti-space-3);
  align-items: center;
}
/* Auto-style raw inputs inside gti-card sections so legacy templates
   without .gti-input still look coherent. */
.gti-card input[type="text"],
.gti-card input[type="email"],
.gti-card input[type="password"],
.gti-card input[type="url"],
.gti-card input[type="number"],
.gti-card select,
.gti-card textarea {
  padding: var(--gti-space-2) var(--gti-space-3);
  border: 1px solid var(--gti-color-border);
  border-radius: var(--gti-radius);
  font: inherit;
  color: var(--gti-color-text);
  background: var(--gti-color-bg);
  max-width: 100%;
}
.gti-card input[type="text"]:focus,
.gti-card input[type="email"]:focus,
.gti-card input[type="password"]:focus,
.gti-card input[type="url"]:focus,
.gti-card input[type="number"]:focus,
.gti-card select:focus,
.gti-card textarea:focus {
  outline: 2px solid var(--gti-color-primary);
  outline-offset: -1px;
  border-color: var(--gti-color-primary);
}

/* Course cards (track) */
.gti-course-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--gti-space-4);
}
.gti-course-card {
  display: block;
  background: var(--gti-color-bg);
  border: 1px solid var(--gti-color-border);
  border-radius: var(--gti-radius-lg);
  padding: var(--gti-space-4) var(--gti-space-6);
  color: var(--gti-color-text);
  transition: border-color .15s, transform .15s;
}
.gti-course-card:hover {
  border-color: var(--gti-color-primary);
  text-decoration: none;
  color: var(--gti-color-text);
  transform: translateY(-1px);
}
.gti-course-card-key {
  font-size: 11px;
  color: var(--gti-color-text-muted);
  letter-spacing: .5px;
  text-transform: uppercase;
  margin-bottom: var(--gti-space-2);
}
.gti-course-card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--gti-color-text);
  margin-bottom: var(--gti-space-2);
}
.gti-course-card-desc {
  font-size: 13px;
  color: var(--gti-color-text-muted);
  margin-bottom: var(--gti-space-3);
  line-height: 1.5;
}
.gti-course-card-cta {
  color: var(--gti-color-primary);
  font-weight: 500;
  font-size: 13px;
}

/* Resource cards (community feed) */
.gti-resource-list > * + * { margin-top: var(--gti-space-4); }
.gti-resource-meta {
  font-size: 12px;
  color: var(--gti-color-text-muted);
  margin-bottom: var(--gti-space-2);
}
.gti-resource-meta a { color: var(--gti-color-text); font-weight: 500; }
.gti-resource-body { line-height: 1.6; }
.gti-tag-row { display: flex; gap: var(--gti-space-2); flex-wrap: wrap; margin-top: var(--gti-space-3); }

/* Tables */
.gti-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--gti-color-bg);
}
.gti-table th, .gti-table td {
  padding: var(--gti-space-3);
  text-align: left;
  border-bottom: 1px solid var(--gti-color-border);
}
.gti-table th {
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--gti-color-text-muted);
  background: var(--gti-color-bg-soft);
}

/* Badges */
.gti-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.4;
}
.gti-badge-neutral { background: var(--gti-color-bg-soft); color: var(--gti-color-text-muted); border: 1px solid var(--gti-color-border); }
.gti-badge-success { background: #d1fae5; color: #065f46; }
.gti-badge-warning { background: #fef3c7; color: #92400e; }
.gti-badge-danger  { background: #fee2e2; color: #991b1b; }

/* Flash messages */
.gti-flash {
  padding: var(--gti-space-3) var(--gti-space-4);
  border-radius: var(--gti-radius);
  margin-bottom: var(--gti-space-4);
  border: 1px solid transparent;
}
.gti-flash-success { background: #d1fae5; color: #065f46; border-color: #a7f3d0; }
.gti-flash-error   { background: #fee2e2; color: #991b1b; border-color: #fecaca; }
.gti-flash-info    { background: #dbeafe; color: #1e40af; border-color: #bfdbfe; }

/* Empty state */
.gti-empty-state {
  text-align: center;
  padding: var(--gti-space-8) var(--gti-space-4);
  color: var(--gti-color-text-muted);
}

/* Utility */
.gti-text-muted { color: var(--gti-color-text-muted); }
.gti-text-sm    { font-size: 13px; }
.gti-text-bold  { font-weight: 600; }
.gti-list       { padding-left: var(--gti-space-6); margin: 0 0 var(--gti-space-3); }
.gti-stack > * + * { margin-top: var(--gti-space-4); }

/* Responsive */
@media (max-width: 640px) {
  .gti-nav-primary .gti-container { flex-wrap: wrap; height: auto; padding-top: var(--gti-space-2); padding-bottom: var(--gti-space-2); }
  .gti-nav-tabs { flex-wrap: wrap; gap: var(--gti-space-4); }
  .gti-user-menu-name { display: none; }
  .gti-card { padding: var(--gti-space-4); }
}