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

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--brand-primary);
}

h1 {
    font-size: var(--text-6xl);
    line-height: 1.1;
}

h2 {
    font-size: var(--text-4xl);
}

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

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

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

p:last-child {
    margin-bottom: 0;
}

a {
    color: var(--brand-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

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

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

/* 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;
}