/* ══════════════════════════════════════════
   BASE — Reset + базовые стили + типографика
   ══════════════════════════════════════════ */

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-root);
    background-image: none;
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color var(--duration-slow) var(--ease-out);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: var(--leading-tight);
    color: var(--text-primary);
}

h1 {
    font-size: var(--text-3xl);
    letter-spacing: -0.025em;
}

h2 {
    font-size: var(--text-2xl);
    letter-spacing: -0.02em;
}

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

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

h5 {
    font-size: var(--text-md);
    font-weight: 600;
}

h6 {
    font-size: var(--text-base);
    font-weight: 600;
}

p {
    margin-bottom: 0.75em;
    color: var(--text-secondary);
}

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

a {
    color: var(--text-link);
    text-decoration: none;
    transition: var(--transition-colors);
}

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

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

ul,
ol {
    list-style: none;
}

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

button {
    cursor: pointer;
}

code,
kbd,
pre {
    font-family: var(--font-mono);
    font-size: 0.9em;
}

kbd {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1px 6px;
    font-size: var(--text-xs);
    font-weight: 500;
    background: var(--bg-surface-3);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xs);
    white-space: nowrap;
    min-width: 20px;
    height: 20px;
    line-height: 1;
}

hr {
    border: none;
    border-top: 1px solid var(--border-subtle);
    margin: 1.5rem 0;
}

::selection {
    background: var(--accent-subtle);
    color: var(--text-primary);
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-strong);
}

/* === Утилиты === */
.text-mono {
    font-family: var(--font-mono);
}

.text-xs {
    font-size: var(--text-xs);
}

.text-sm {
    font-size: var(--text-sm);
}

.text-base {
    font-size: var(--text-base);
}

.text-md {
    font-size: var(--text-md);
}

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

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

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

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

.text-primary {
    color: var(--text-primary);
}

.text-secondary {
    color: var(--text-secondary);
}

.text-tertiary {
    color: var(--text-tertiary);
}

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-warning {
    color: var(--warning);
}

.text-accent {
    color: var(--accent);
}

.fw-400 {
    font-weight: 400;
}

.fw-500 {
    font-weight: 500;
}

.fw-600 {
    font-weight: 600;
}

.fw-700 {
    font-weight: 700;
}

.fw-800 {
    font-weight: 800;
}

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.text-uppercase {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.d-none {
    display: none !important;
}

.d-flex {
    display: flex;
}

.d-grid {
    display: grid;
}

.d-block {
    display: block;
}

.d-inline-flex {
    display: inline-flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.flex-col {
    flex-direction: column;
}

.flex-1 {
    flex: 1;
}

.items-center {
    align-items: center;
}

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-end {
    justify-content: flex-end;
}

.gap-1 {
    gap: 4px;
}

.gap-2 {
    gap: 8px;
}

.gap-3 {
    gap: 12px;
}

.gap-4 {
    gap: 16px;
}

.gap-5 {
    gap: 20px;
}

.gap-6 {
    gap: 24px;
}

.gap-8 {
    gap: 32px;
}

.m-0 {
    margin: 0;
}

.mt-1 {
    margin-top: 4px;
}

.mt-2 {
    margin-top: 8px;
}

.mt-3 {
    margin-top: 12px;
}

.mt-4 {
    margin-top: 16px;
}

.mt-5 {
    margin-top: 20px;
}

.mt-6 {
    margin-top: 24px;
}

.mb-1 {
    margin-bottom: 4px;
}

.mb-2 {
    margin-bottom: 8px;
}

.mb-3 {
    margin-bottom: 12px;
}

.mb-4 {
    margin-bottom: 16px;
}

.mb-5 {
    margin-bottom: 20px;
}

.mb-6 {
    margin-bottom: 24px;
}

.p-0 {
    padding: 0;
}

.p-2 {
    padding: 8px;
}

.p-3 {
    padding: 12px;
}

.p-4 {
    padding: 16px;
}

.p-5 {
    padding: 20px;
}

.p-6 {
    padding: 24px;
}

.w-100 {
    width: 100%;
}

.min-w-0 {
    min-width: 0;
}

.overflow-hidden {
    overflow: hidden;
}

.overflow-auto {
    overflow: auto;
}

.overflow-x-auto {
    overflow-x: auto;
}

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.cursor-pointer {
    cursor: pointer;
}

.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;
}