/* ============================================
   AMD Base Styles - Reset & Typography
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Arabic font override */
[lang="ar"] body,
[dir="rtl"] body {
    font-family: var(--font-arabic);
}

/* ========== Typography ========== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

[lang="ar"] h1,
[lang="ar"] h2,
[lang="ar"] h3,
[lang="ar"] h4,
[lang="ar"] h5,
[lang="ar"] h6 {
    font-family: var(--font-arabic);
    font-weight: var(--font-weight-bold);
}

h1 {
    font-size: var(--font-size-5xl);
    letter-spacing: var(--letter-spacing-tight);
}

h2 {
    font-size: var(--font-size-4xl);
    letter-spacing: var(--letter-spacing-tight);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

a {
    color: var(--text-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--border-radius-sm);
}

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

em,
i {
    font-style: italic;
}

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

/* ========== Lists ========== */
ul,
ol {
    padding-inline-start: var(--spacing-6);
    margin-bottom: var(--spacing-4);
}

li {
    margin-bottom: var(--spacing-2);
}

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

img {
    border-style: none;
}

/* ========== Forms ========== */
input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

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

input:focus,
textarea:focus,
select:focus,
button:focus {
    outline: none;
}

/* ========== Tables ========== */
table {
    border-collapse: collapse;
    width: 100%;
}

/* ========== Misc ========== */
hr {
    border: none;
    border-top: var(--border-width-thin) solid var(--border-color);
    margin: var(--spacing-8) 0;
}

blockquote {
    border-inline-start: var(--border-width-thick) solid var(--color-primary);
    padding-inline-start: var(--spacing-6);
    margin: var(--spacing-6) 0;
    font-style: italic;
    color: var(--text-secondary);
}

code {
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: var(--font-size-sm);
    background-color: var(--bg-tertiary);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--border-radius-sm);
}

::selection {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* ========== 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;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--border-radius-md);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--spacing-4);
}

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

/* Reduced motion preference */
@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;
    }
}