/* ==========================================================================
   FormosaBible Website Base Styles & Primitives
   Shared across all website pages (index.html, 404.html, etc.)
   ========================================================================== */

/* 1. Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--color-bg-paper);
  color: var(--color-text-primary);
  font-size: 16px;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--color-bg-paper);
  font-family: var(--font-serif-tc);
  color: var(--color-text-primary);
  line-height: var(--lh-body);
  overflow-x: hidden;
  min-height: 100vh;
}

/* 2. Accessibility Defaults */
a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

/* 3. Links & Button Primitives */
a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 1rem;
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-cta-bg);
  color: var(--color-cta-text);
  font-family: var(--font-sans);
  font-size: var(--fs-cta);
  font-weight: 700;
  padding: 16px 36px;
  min-height: 52px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  border: 1px solid var(--color-cta-bg);
  box-shadow: 0 2px 4px rgba(26, 24, 18, 0.08);
  cursor: pointer;
  transition: background-color 0.25s ease, transform 0.15s ease, border-color 0.25s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  background-color: var(--color-cta-hover);
  border-color: var(--color-cta-hover);
  transform: translateY(-1px);
}

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

.btn-secondary {
  background-color: var(--bg-parchment);
  color: var(--text-dark);
  border: 1px solid var(--border-color);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: 4px;
}

.btn-secondary:hover {
  background-color: rgba(221, 215, 203, 0.4);
}

.link-secondary {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: var(--fs-ui);
  font-weight: 600;
  color: var(--color-text-wood);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  padding: 12px 16px;
  min-height: 48px;
}

.link-secondary:hover {
  color: var(--color-text-primary);
  text-decoration-thickness: 2px;
}

/* 4. Shared Layout Primitives */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

.section-divider {
  border: 0;
  border-top: 1px solid var(--color-border-rule);
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 5. Folio Frame Primitive for Real Screenshots */
.folio-frame {
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border-rule);
  border-radius: 4px;
  padding: 16px;
  box-shadow: 0 8px 24px rgba(74, 53, 32, 0.06);
  position: relative;
}

.folio-frame-inner {
  border: 1px solid var(--color-border-subtle);
  border-radius: 2px;
  overflow: hidden;
  background-color: var(--color-bg-paper);
}

.folio-frame img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease;
}

.folio-caption {
  font-family: var(--font-sans);
  font-size: var(--fs-caption);
  color: var(--color-text-secondary);
  line-height: 1.4;
  margin-top: 12px;
  text-align: center;
}