/* Variables
   ========================================================================== */
:root {
  /* Color System */
  --color-primary: #2563eb;
  --color-primary-strong: #1d4ed8;
  --color-primary-soft: #eff6ff;
  --color-brand-accent: #ffaa64;
  --color-brand-accent-strong: #f97316;
  --color-brand-accent-soft: #fff3e8;

  /* Neutral Colors */
  --color-gray-50: #f8fafc;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #111827;
  --color-gray-900: #0f172a;

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Background Colors */
  --bg-neutral: #f8fafc;
  --bg-warm: #fffaf5;

  /* Typography */
  --typography-scale: 16px;
  --typography-size-1: calc(3 * var(--typography-scale));
  --typography-size-2: calc(2.25 * var(--typography-scale));
  --typography-size-3: calc(1.625 * var(--typography-scale));
  --typography-size-4: calc(1.25 * var(--typography-scale));
  --typography-size-5: calc(1 * var(--typography-scale));
  --typography-size-6: calc(.875 * var(--typography-scale));

  /* Layout */
  --corners-radius: 10px;
  --button-border-radius: 10px;
  --surface-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --surface-shadow-md: 0 10px 25px rgba(15, 23, 42, 0.08);
}

/* Theme: Light Blue
   ========================================================================== */
.theme-light-blue {
  --app-background: var(--bg-neutral);
  --color-brand: var(--color-primary);

  --typography-light: #FFFFFF;
  --typography-primary: var(--color-gray-800);
  --typography-secondary: var(--color-gray-600);

  --cards-background: #fff;
  --cards-border-color: var(--color-gray-200);
  --views-background: #f3f6fb;
}

/* Base Styles
   ========================================================================== */
body {
  margin: 0;
  padding: 0;
  font-family: "Helvetica Now Display", Helvetica, ui-sans-serif, system-ui, -apple-system, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--typography-primary);
  background: var(--app-background);
}

a {
  text-decoration: none;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.5rem, 2vw, 2rem);
  line-height: 1.2;
}

.btn {
  --bs-btn-border-radius: var(--button-border-radius);
  --bs-btn-font-weight: 600;
  --bs-btn-padding-y: 0.5rem;
  --bs-btn-padding-x: 0.95rem;
}

.btn-primary {
  --bs-btn-bg: var(--color-primary);
  --bs-btn-border-color: var(--color-primary);
  --bs-btn-hover-bg: var(--color-primary-strong);
  --bs-btn-hover-border-color: var(--color-primary-strong);
}

.card {
  border: 1px solid var(--cards-border-color);
  box-shadow: var(--surface-shadow-sm);
}

.card:hover {
  box-shadow: var(--surface-shadow-md);
}

/* Layout Components
   ========================================================================== */
.page {
  background-color: var(--app-background);
  min-width: min-content;
  min-height: calc(100vh - 50px);
}

.page__title {
  text-align: center;
}

/* Navigation
   ========================================================================== */
.navbar {
  background-color: #fff;
}

.site-header {
  background-color: #fff;
  border-bottom: 1px solid var(--color-gray-200);
}

.navbar-nav .nav-link {
  color: var(--color-gray-600);
  font-weight: 500;
}

.navbar-nav .nav-link:hover {
  color: var(--color-primary);
}

.navbar-nav .nav-link.active {
  color: var(--color-primary);
  font-weight: 500;
}

.nav-user-avatar-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  vertical-align: middle;
  flex-shrink: 0;
}

.nav-user-avatar {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 50%;
  object-fit: cover;
}

.nav-user-avatar-icon {
  font-size: 24px;
  line-height: 1;
  color: var(--color-gray-500);
}

/* Forms
   ========================================================================== */
.form-signin {
  max-width: 500px;
  padding: 1rem;
}

.dropdown-menu {
  --bs-dropdown-font-size: 0.8rem;
  --bs-dropdown-item-padding-x: 0.8rem;
}

/* Progress Overlay
   ========================================================================== */
.progress-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1060;
}

.progress-overlay--hidden {
  display: none;
}

.progress-overlay__content {
  text-align: center;
}

.progress-overlay__spinner {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--color-gray-500);
}

.progress-overlay__message {
  font-size: 1.2rem;
  color: var(--color-gray-700);
}

/* Utilities
   ========================================================================== */
.hr-text {
  display: flex;
  align-items: center;
  text-align: center;
}

.hr-text::before,
.hr-text::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--color-gray-400);
}

.hr-text:not(:empty)::before {
  margin-right: .25em;
}

.hr-text:not(:empty)::after {
  margin-left: .25em;
}

/* Media Queries
   ========================================================================== */
@media (max-width: 768px) {
  .blog-post {
    font-size: 1rem;
  }

  .blog-post .lead {
    font-size: 1.1rem;
  }
}