/* ==================== BASE STYLES ==================== */
/* Reset, Typography, and Global Styles */

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

/* Root Element */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

/* Body */
body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Gradient */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(139, 92, 246, 0.1), transparent);
    pointer-events: none;
    z-index: -1;
}

/* ==================== TYPOGRAPHY ==================== */

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

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

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

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

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

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

strong {
    font-weight: var(--font-semibold);
    color: var(--color-text);
}

/* ==================== LINKS ==================== */

a {
    color: var(--color-primary-400);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--color-primary-300);
}

/* ==================== FOCUS STATES ==================== */

:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* ==================== SELECTION ==================== */

::selection {
    background-color: var(--color-primary-600);
    color: white;
}

/* ==================== BUTTONS (Reset) ==================== */

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

button:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* ==================== INPUTS (Reset) ==================== */

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

input[type="file"] {
    cursor: pointer;
}

input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

/* ==================== LISTS ==================== */

ul,
ol {
    list-style: none;
}

/* ==================== IMAGES ==================== */

img,
svg {
    display: block;
    max-width: 100%;
}

/* ==================== SCROLLBAR ==================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-neutral-900);
}

::-webkit-scrollbar-thumb {
    background: var(--color-neutral-700);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-600);
}

/* ==================== UTILITIES ==================== */

.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;
}

[hidden] {
    display: none !important;
}