/* ============================================================
   BUDDHIST DIPLOMACY — Base Styles
   Reset, Fonts, Global Defaults
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,500;0,8..60,600;0,8..60,700;1,8..60,400;1,8..60,500&family=Inter:wght@300;400;500;600;700&display=swap');

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--body-md-size);
  font-weight: var(--body-md-weight);
  line-height: var(--body-md-line);
  color: var(--on-surface);
  background-color: var(--surface);
  min-height: 100vh;
  transition: background-color 350ms ease, color 350ms ease;
  overflow-x: hidden;
}

/* --- Selection --- */
::selection {
  background-color: rgba(198, 150, 59, 0.25);
  color: var(--charcoal);
}

::-moz-selection {
  background-color: rgba(198, 150, 59, 0.25);
  color: var(--charcoal);
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--neutral);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--on-surface-tertiary);
}

/* --- Focus --- */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* --- Typography Defaults --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--on-surface);
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: var(--display-lg-size);
  line-height: var(--display-lg-line);
  letter-spacing: var(--display-lg-spacing);
}

h2 {
  font-size: var(--headline-lg-size);
  line-height: var(--headline-lg-line);
  letter-spacing: var(--headline-lg-spacing);
}

h3 {
  font-size: var(--headline-md-size);
  line-height: var(--headline-md-line);
}

h4 {
  font-size: var(--headline-sm-size);
  line-height: var(--headline-sm-line);
  font-family: var(--font-body);
}

p {
  font-size: var(--body-md-size);
  line-height: var(--body-md-line);
  color: var(--on-surface-secondary);
}

a {
  color: var(--link);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--link-hover);
}

strong, b {
  font-weight: 600;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
  color: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

/* --- Label Utility --- */
.label {
  font-family: var(--font-body);
  font-size: var(--label-size);
  font-weight: var(--label-weight);
  line-height: var(--label-line);
  letter-spacing: var(--label-spacing);
  text-transform: uppercase;
}

/* Keep backwards compat for admin */
.label-caps {
  font-family: var(--font-body);
  font-size: var(--label-size);
  font-weight: var(--label-weight);
  line-height: var(--label-line);
  letter-spacing: var(--label-spacing);
  text-transform: uppercase;
}

/* --- Caption Utility --- */
.caption {
  font-family: var(--font-body);
  font-size: var(--caption-size);
  font-weight: var(--caption-weight);
  line-height: var(--caption-line);
  color: var(--on-surface-secondary);
}

/* --- Display Text --- */
.display-xl {
  font-family: var(--font-display);
  font-size: var(--display-xl-size);
  font-weight: var(--display-xl-weight);
  line-height: var(--display-xl-line);
  letter-spacing: var(--display-xl-spacing);
  color: var(--on-surface);
}

.display-lg {
  font-family: var(--font-display);
  font-size: var(--display-lg-size);
  font-weight: var(--display-lg-weight);
  line-height: var(--display-lg-line);
  letter-spacing: var(--display-lg-spacing);
  color: var(--on-surface);
}

/* --- Headline --- */
.headline-lg {
  font-family: var(--font-display);
  font-size: var(--headline-lg-size);
  font-weight: var(--headline-lg-weight);
  line-height: var(--headline-lg-line);
  letter-spacing: var(--headline-lg-spacing);
}

.headline-md {
  font-family: var(--font-display);
  font-size: var(--headline-md-size);
  font-weight: var(--headline-md-weight);
  line-height: var(--headline-md-line);
}

/* --- Body --- */
.body-lg {
  font-size: var(--body-lg-size);
  font-weight: var(--body-lg-weight);
  line-height: var(--body-lg-line);
}

/* --- Mono Text (backwards compat for admin) --- */
.mono {
  font-family: var(--font-mono);
}

/* --- Visually Hidden (Accessibility) --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --- Theme transition for interactive elements --- */
body.theme-transitioning * {
  transition-property: background-color, border-color, box-shadow, color;
  transition-duration: 350ms;
  transition-timing-function: ease;
}