/* ============================================================
   «Подшивка» — эффекты и полезные мелочи.
   Подключается после style.css и не меняет базовую палитру.
   ============================================================ */

/* ---------- Прогресс чтения страницы ---------- */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 130;
    pointer-events: none;
    background: transparent;
}
.reading-progress > span {
    display: block;
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--accent), #ff9a6b);
    border-radius: 0 999px 999px 0;
    box-shadow: 0 0 12px rgba(194, 69, 45, .45);
}

/* ---------- Кнопка «наверх» с кольцом прогресса ---------- */
.to-top {
    position: fixed;
    right: 22px;
    bottom: calc(22px + env(safe-area-inset-bottom, 0px));
    z-index: 90;
    width: 52px;
    height: 52px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: var(--glass-strong);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: var(--glass-shadow);
    color: var(--ink);
    cursor: pointer;
    opacity: 0;
    transform: translateY(16px) scale(.82);
    pointer-events: none;
    transition: opacity var(--motion-base, 280ms) var(--motion-ease, cubic-bezier(.22, .8, .25, 1)),
        transform var(--motion-base, 280ms) var(--motion-ease, cubic-bezier(.22, .8, .25, 1)),
        box-shadow var(--motion-base, 280ms) ease;
}
.to-top.is-visible {
    opacity: 1;
    transform: none;
    pointer-events: auto;
}
.to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 38px rgba(31, 26, 22, .24), inset 0 1px 0 rgba(255, 255, 255, .7);
}
.to-top:active { transform: scale(.94); }
.to-top:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.to-top svg {
    grid-area: 1 / 1;
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    pointer-events: none;
}
.to-top .to-top-ring {
    fill: none;
    stroke: var(--accent);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 100.53;
    stroke-dashoffset: 100.53;
}
.to-top .to-top-arrow {
    grid-area: 1 / 1;
    font-size: 20px;
    line-height: 1;
    font-weight: 800;
    transform: translateY(-1px);
}
@media (max-width: 700px) {
    body:has(.home-nav) .to-top { bottom: calc(88px + env(safe-area-inset-bottom, 0px)); }
}

/* ---------- Плавное появление блоков ---------- */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--motion-slow, 360ms) var(--motion-ease, cubic-bezier(.22, .8, .25, 1)),
        transform var(--motion-slow, 360ms) var(--motion-ease, cubic-bezier(.22, .8, .25, 1));
    will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Карточки с подсветкой за курсором ---------- */
.glow-card { position: relative; }
.glow-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
    background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(194, 69, 45, .13), transparent 62%);
    transition: opacity var(--motion-base, 280ms) ease;
}
.glow-card:hover::before { opacity: 1; }
.glow-card > * { position: relative; z-index: 1; }

/* ---------- Волны на кнопках ---------- */
.btn, .chip, .social-action, .item-nav-btn, .follow-button, .sidebar-toggle, .home-nav-card {
    position: relative;
    overflow: hidden;
}
.ripple-ink {
    position: absolute;
    border-radius: 50%;
    background: currentColor;
    opacity: .24;
    transform: scale(0);
    pointer-events: none;
    animation: pod-ripple 560ms var(--motion-ease, cubic-bezier(.22, .8, .25, 1)) forwards;
}
@keyframes pod-ripple {
    to { transform: scale(2.6); opacity: 0; }
}

/* ---------- Поиск по архиву ---------- */
.archive-search {
    position: relative;
    max-width: 560px;
    margin: 0 0 22px;
}
.archive-search input {
    width: 100%;
    height: 50px;
    padding: 0 52px;
    border: 1px solid rgba(255, 255, 255, .7);
    border-radius: 999px;
    background: var(--glass, rgba(255, 255, 255, .55));
    backdrop-filter: var(--glass-blur, blur(14px));
    -webkit-backdrop-filter: var(--glass-blur, blur(14px));
    box-shadow: 0 6px 18px rgba(31, 26, 22, .07), inset 0 1px 0 rgba(255, 255, 255, .6);
    color: var(--ink);
    font: inherit;
    font-size: 14px;
    transition: box-shadow var(--motion-base, 280ms) ease, border-color var(--motion-base, 280ms) ease, background var(--motion-base, 280ms) ease;
}
.archive-search input::placeholder { color: var(--muted); }
.archive-search input:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 10px 28px rgba(194, 69, 45, .16), inset 0 1px 0 rgba(255, 255, 255, .7);
}
.archive-search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--muted);
    font-size: 17px;
    line-height: 1;
    pointer-events: none;
}
.archive-search kbd {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    padding: 3px 8px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: rgba(255, 255, 255, .78);
    color: var(--muted);
    font: 700 11px/1.3 Manrope, "Segoe UI", Arial, sans-serif;
}
.archive-search-clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border: 0;
    border-radius: 50%;
    background: rgba(26, 26, 26, .1);
    color: var(--ink);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    transition: background var(--motion-fast, 180ms) ease, transform var(--motion-fast, 180ms) ease;
}
.archive-search-clear:hover { background: var(--accent); color: #fff; transform: translateY(-50%) scale(1.06); }
.archive-search-clear[hidden] { display: none; }
.archive-search:not(.has-value) kbd { display: inline-block; }
.archive-search.has-value kbd { display: none; }

/* ---------- Шапка при прокрутке ---------- */
.topbar { transition: box-shadow var(--motion-base, 280ms) ease, border-color var(--motion-base, 280ms) ease; }
.topbar.is-scrolled {
    box-shadow: 0 14px 38px rgba(31, 26, 22, .15);
    border-bottom-color: rgba(227, 224, 218, .85);
}

/* ---------- Выделение текста и скроллбар ---------- */
::selection { background: rgba(194, 69, 45, .2); color: var(--ink); }
@media (hover: hover) and (pointer: fine) {
    ::-webkit-scrollbar { width: 12px; height: 12px; }
    ::-webkit-scrollbar-track { background: var(--soft, #f6f4f0); }
    ::-webkit-scrollbar-thumb { background: #cfc9bf; border-radius: 999px; border: 3px solid var(--soft, #f6f4f0); }
    ::-webkit-scrollbar-thumb:hover { background: var(--accent); }
}

/* ---------- Уважение к настройкам уменьшенной анимации ---------- */
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .glow-card::before { display: none; }
    .ripple-ink { display: none; }
}