/**
 * Base styles - Reset and typography
 */

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

/* Remove default margin/padding */
* {
    margin: 0;
    padding: 0;
}

/* Prevent font size inflation */
html {
    -moz-text-size-adjust: none;
    -webkit-text-size-adjust: none;
    text-size-adjust: none;
}

/* Core body styles */
body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

h1 {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
}

h2 {
    font-size: var(--text-2xl);
}

h3 {
    font-size: var(--text-xl);
}

h4 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-4);
}

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

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

a:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
    border-radius: var(--radius-sm);
}

/* Lists */
ul, ol {
    padding-left: var(--space-6);
}

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

/* Form elements */
input, button, textarea, select {
    font: inherit;
    color: inherit;
}

/* Remove default button styles */
button {
    background: none;
    border: none;
    cursor: pointer;
}

/* 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;
    }
}

/* Screen reader only */
.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;
}

.sr-only-focusable:focus,
.sr-only-focusable:active {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: var(--z-modal);
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-md);
    font-weight: var(--font-medium);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Selection */
::selection {
    background-color: #E5E5DF;
    color: var(--color-text);
}

/* Paper diagonal texture — fixed so it doesn't scroll with content */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: repeating-linear-gradient(
        -45deg,
        rgba(0, 0, 0, 0.025),
        rgba(0, 0, 0, 0.025) 1px,
        transparent 1px,
        transparent 24px
    );
}

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

::-webkit-scrollbar-track {
    background: var(--color-surface-tertiary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-secondary);
}