/* assets/css/base.css — reset, body, scrollbar, утилиты */

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

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

body {
    font-family: var(--font);
    font-size: var(--text-md);
    font-weight: var(--weight-normal);
    line-height: var(--leading-normal);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    height: 100vh;
    overflow: hidden;
    position: fixed;
    inset: 0;
    -webkit-tap-highlight-color: transparent;
    letter-spacing: -0.005em;
}

/* Тонкая сетка на фоне + базовые градиенты */
/* ⚡ z-index: -1 — под canvas (canvas z-index: 1) и под .main-app (z-index: 10) */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.012) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.012) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
}

body.light-theme::before {
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.02) 1px, transparent 1px);
}

/* Градиентное свечение фона — тоже под canvas */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(ellipse at 15% 15%, var(--primary-subtle) 0%, transparent 55%),
        radial-gradient(ellipse at 85% 85%, var(--primary-subtle) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, var(--primary-subtle) 0%, transparent 65%);
    opacity: 0.5;
}

/* ============================================================
   СКРОЛЛБАР
   ============================================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-deep);
}

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

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

/* ============================================================
   ТИПОГРАФИКА
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--weight-semibold);
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

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

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

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

/* ============================================================
   ФОКУС
   ============================================================ */
:focus {
    outline: none;
}

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

/* ============================================================
   УТИЛИТЫ
   ============================================================ */
.hidden {
    display: none !important;
}

.mobile-only {
    display: none !important;
}

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--text-primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-center { text-align: center; }

.font-mono { font-family: var(--font-mono); }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold { font-weight: var(--weight-bold); }

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

/* ============================================================
   SELECT
   ============================================================ */
select {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    padding: 8px 32px 8px 12px;
    color: var(--text-primary);
    font-size: var(--text-base);
    font-family: var(--font);
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236E7278' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    transition: border-color var(--transition-base);
}

select:hover {
    border-color: var(--border-hover);
}

select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-ring);
}

select option {
    background: var(--bg-surface);
    color: var(--text-primary);
}

/* ============================================================
   INPUT / TEXTAREA
   ============================================================ */
input,
textarea {
    font-family: var(--font);
    font-size: var(--text-base);
    color: var(--text-primary);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-dim);
}

/* ============================================================
   УТИЛИТА: визуально скрыто
   ============================================================ */
.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;
}