/* ============================================================
   SCHOLARIA BASE STYLES
   Modern CSS reset + sensible defaults consuming design tokens.
   Loaded after tokens.css, before any component or page CSS.
   ============================================================ */

/* ---- Box Model Reset ---- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* ---- Margin / Padding Reset ---- */
* {
  margin: 0;
  padding: 0;
}

/* ---- Document ---- */
html {
  font-size: 100%; /* 16px base for rem calculations */
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}

/* ---- Body ---- */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- Typography ---- */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

@media (min-width: 768px) {
  h1 { font-size: var(--font-size-4xl); }
  h2 { font-size: var(--font-size-3xl); }
  h3 { font-size: var(--font-size-2xl); }
}

p {
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

small {
  font-size: var(--font-size-sm);
}

strong, b {
  font-weight: var(--font-weight-semibold);
}

/* ---- Links ---- */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ---- Lists ---- */
ul, ol {
  list-style: none;
}

/* ---- Media ---- */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

img {
  border-style: none;
}

/* ---- Form Elements ---- */
input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

input,
textarea,
select {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2-5) var(--space-3);
  min-height: var(--touch-target);
  width: 100%;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-tertiary);
}

textarea {
  resize: vertical;
  min-height: 80px;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M2.22 4.22a.75.75 0 0 1 1.06 0L6 6.94l2.72-2.72a.75.75 0 1 1 1.06 1.06l-3.25 3.25a.75.75 0 0 1-1.06 0L2.22 5.28a.75.75 0 0 1 0-1.06z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-10);
}

label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-1-5);
}

fieldset {
  border: none;
}

/* ---- Table Base ---- */
table {
  border-collapse: collapse;
  width: 100%;
}

th {
  text-align: left;
  font-weight: var(--font-weight-semibold);
}

/* ---- Horizontal Rule ---- */
hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

/* ---- Code ---- */
code, pre {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

pre {
  overflow-x: auto;
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background-color: var(--color-gray-100);
}

/* ---- Focus Styles (Accessibility) ---- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* ---- Selection ---- */
::selection {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

/* ---- Scrollbar (Webkit) ---- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500);
}

/* ---- 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;
  }
}

/* ---- Print ---- */
@media print {
  body {
    background: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}