:root {
    --font-body: "IRANSansX", Tahoma, sans-serif;
    --font-heading: "IRANYekanX", "IRANSansX", sans-serif;
    --clr-primary: #542c50;
    --clr-primary-rgb: 84, 44, 80;
    --clr-accent: #cf735d;
    --clr-accent-rgb: 207, 115, 93;
    --clr-danger: #a94545;
    --bg-base: #fffaf4;
    --bg-surface: #f5ede4;
    --bg-soft: #eee5da;
    --text-primary: #2f252d;
    --text-secondary: #71636c;
    --border: #dcd0c5;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 14px;
    --transition-base: 180ms ease;
}

html { scroll-padding-top: 138px; }
body.piano-body { background: var(--bg-base); color: var(--text-primary); }
body.piano-menu-open { overflow: hidden; }
button, a { -webkit-tap-highlight-color: transparent; }
button:active, .piano-button:active, .piano-icon-button:active { transform: translateY(1px) scale(.98); }
img { max-width: 100%; }

.piano-shell {
    width: min(100% - 40px, 1440px);
    margin-inline: auto;
}
.piano-main { min-height: 60vh; padding-block: 2rem; }
.piano-main--wide { min-height: 60vh; padding-block: 0; overflow: clip; }
.piano-skip {
    position: fixed; z-index: 110; inset-block-start: 8px; inset-inline-start: 12px;
    padding: .6rem 1rem; background: #fff; color: var(--clr-primary);
    border: 2px solid var(--clr-primary); transform: translateY(-150%);
}
.piano-skip:focus { transform: translateY(0); }

.piano-header {
    position: sticky; z-index: 60; inset-block-start: 0;
    background: rgba(255, 250, 244, .96); border-bottom: 1px solid var(--border);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.piano-announcement { background: var(--clr-primary); color: #fff; font-size: .76rem; }
.piano-announcement__inner {
    min-height: 32px; display: flex; align-items: center; justify-content: center; gap: 1rem;
}
.piano-announcement a { color: #fff; border-bottom: 1px solid rgba(255,255,255,.65); }
.piano-header__main-inner {
    min-height: 78px; display: grid; grid-template-columns: auto minmax(260px, 660px) auto;
    align-items: center; gap: clamp(1rem, 3vw, 3rem);
}
.piano-brand { display: flex; flex-direction: column; min-width: 138px; color: var(--text-primary); line-height: 1; }
.piano-brand:hover { color: var(--clr-primary); opacity: 1; }
.piano-brand strong { font-family: var(--font-heading); font-size: 1.85rem; font-weight: 900; letter-spacing: -.05em; }
.piano-brand small { margin-top: .45rem; color: var(--text-secondary); font-size: .6rem; white-space: nowrap; }
.piano-search { position: relative; display: flex; align-items: center; }
.piano-search > i { position: absolute; inset-inline-start: 1rem; z-index: 1; color: var(--text-secondary); font-size: 1.1rem; }
.piano-search input {
    width: 100%; height: 44px; padding: .65rem 2.8rem .65rem 3.1rem;
    border: 1px solid var(--border); border-radius: 2px; background: #fff; color: var(--text-primary);
}
.piano-search input:focus { border-color: var(--clr-primary); box-shadow: 0 0 0 3px rgba(var(--clr-primary-rgb), .12); outline: 0; }
.piano-search > button {
    position: absolute; inset-inline-end: 5px; width: 35px; height: 35px; display: grid; place-items: center;
    border: 0; background: var(--clr-primary); color: #fff; cursor: pointer;
}
.piano-search .site-search__results { inset-block-start: calc(100% + 8px); }
.piano-actions { display: flex; align-items: center; justify-content: flex-end; gap: .25rem; }
.piano-icon-button {
    min-width: 42px; min-height: 42px; display: inline-flex; flex-direction: column; align-items: center; justify-content: center;
    gap: .12rem; padding: .25rem .5rem; border: 0; background: transparent; color: var(--text-primary); cursor: pointer;
}
.piano-icon-button i { font-size: 1.3rem; }
.piano-icon-button span { font-size: .63rem; }
.piano-mobile-menu-button, .piano-mobile-search-button { display: none; }
.piano-actions .mini-cart {
    min-width: 42px; min-height: 42px; flex-direction: column; justify-content: center; gap: .1rem;
    padding: .25rem .5rem; border: 0; border-radius: 0; background: transparent;
}
.piano-actions .mini-cart > i { font-size: 1.3rem; }
.piano-actions .mini-cart__label { display: inline; font-size: .63rem; }
.piano-actions .mini-cart__count {
    position: absolute; inset-block-start: 0; inset-inline-end: 0; min-width: 17px; height: 17px;
    background: var(--clr-accent); font-size: .58rem;
}
.piano-actions .account-menu__panel { border-radius: 4px; background: #fffaf4; }
.piano-header__nav { border-top: 1px solid rgba(84,44,80,.1); }
.piano-header__nav nav { min-height: 43px; display: flex; align-items: stretch; justify-content: center; gap: clamp(1.1rem, 3vw, 2.8rem); }
.piano-header__nav nav > a, .piano-header__nav .site-nav__item > a {
    min-height: 43px; display: inline-flex; align-items: center; color: var(--text-primary); font-size: .82rem; font-weight: 650;
    border-bottom: 2px solid transparent;
}
.piano-header__nav nav > a:hover, .piano-header__nav .site-nav__item > a:hover { color: var(--clr-primary); border-bottom-color: var(--clr-accent); opacity: 1; }
.piano-header__nav .site-nav__item { position: relative; display: inline-flex; }
.piano-header__nav .site-nav__submenu {
    inset-block-start: 100%; inset-inline-start: 50%; transform: translateX(50%);
    min-width: 190px; padding: .55rem; border: 1px solid var(--border); border-radius: 4px; background: #fff;
}
.piano-header__nav .site-nav__submenu a { display: block; padding: .55rem .7rem; color: var(--text-primary); }
.piano-mobile-search { padding-block-end: .75rem; }
.piano-mobile-search[hidden] { display: none; }
.piano-mobile-search form { display: flex; align-items: center; border: 1px solid var(--border); background: #fff; }
.piano-mobile-search i { margin-inline: .75rem; color: var(--text-secondary); }
.piano-mobile-search input { flex: 1; min-width: 0; height: 44px; border: 0; background: transparent; }
.piano-mobile-search button { align-self: stretch; padding-inline: 1rem; border: 0; background: var(--clr-primary); color: #fff; }

.piano-mobile-menu {
    position: fixed; z-index: 91; inset-block: 0; inset-inline-start: 0; width: min(88vw, 380px);
    display: flex; flex-direction: column; padding: 1rem; background: var(--bg-base);
    transform: translateX(110%); transition: transform 240ms ease;
}
.piano-mobile-menu.is-open { transform: translateX(0); }
.piano-mobile-menu__head { display: flex; align-items: center; justify-content: space-between; padding-block-end: 1rem; border-bottom: 1px solid var(--border); }
.piano-mobile-menu__head strong { font-size: 1.2rem; }
.piano-mobile-menu__head button { width: 42px; height: 42px; border: 0; background: transparent; font-size: 1.4rem; }
.piano-mobile-menu nav { display: flex; flex-direction: column; padding-block: 1rem; }
.piano-mobile-menu nav > a, .piano-mobile-menu .site-nav__item > a { display: flex; padding: .75rem .25rem; color: var(--text-primary); border-bottom: 1px solid var(--border); }
.piano-mobile-menu .site-nav__item { display: flex; flex-direction: column; }
.piano-mobile-menu .site-nav__submenu { position: static; display: flex; flex-direction: column; padding-inline-start: 1rem; border: 0; box-shadow: none; background: transparent; }
.piano-mobile-menu .site-nav__submenu a { padding: .55rem .25rem; color: var(--text-secondary); }
.piano-mobile-menu__help { margin-top: auto; padding: .8rem; display: flex; align-items: center; gap: .5rem; background: var(--bg-surface); color: var(--clr-primary); }
.piano-menu-backdrop { position: fixed; z-index: 90; inset: 0; border: 0; background: rgba(36,25,34,.42); }
.piano-menu-backdrop[hidden] { display: none; }

.piano-footer { padding-block-start: clamp(3rem, 7vw, 6rem); background: #342831; color: #f6eee8; }
.piano-footer__top { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: clamp(2rem, 5vw, 5rem); padding-block-end: 3rem; }
.piano-footer__brand strong { font-family: var(--font-heading); font-size: 2.5rem; }
.piano-footer__brand p { margin: .5rem 0 .25rem; color: #f6eee8; }
.piano-footer__brand span { color: #cdbfc8; font-size: .8rem; }
.piano-footer nav, .piano-footer__contact { display: flex; flex-direction: column; align-items: flex-start; gap: .6rem; }
.piano-footer nav > strong, .piano-footer__contact > strong { margin-bottom: .4rem; color: #fff; }
.piano-footer a, .piano-footer button, .piano-footer__contact span { padding: 0; border: 0; background: transparent; color: #cdbfc8; font: inherit; font-size: .82rem; }
.piano-footer a:hover, .piano-footer button:hover { color: #fff; opacity: 1; }
.piano-footer__legal { display: flex; justify-content: space-between; padding-block: 1.1rem; border-top: 1px solid rgba(255,255,255,.12); color: #a99ca5; font-size: .75rem; }

[data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 560ms ease, transform 560ms ease; }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 980px) {
    html { scroll-padding-top: 80px; }
    .piano-shell { width: min(100% - 28px, 1440px); }
    .piano-announcement__inner { justify-content: space-between; }
    .piano-header__main-inner { min-height: 62px; grid-template-columns: auto 1fr auto; gap: .5rem; }
    .piano-brand { min-width: 0; align-items: center; }
    .piano-brand strong { font-size: 1.5rem; }
    .piano-brand small { display: none; }
    .piano-search, .piano-header__nav { display: none; }
    .piano-mobile-menu-button, .piano-mobile-search-button { display: inline-flex; }
    .piano-mobile-menu-button { justify-self: start; }
    .piano-mobile-menu-button span, .piano-mobile-search-button span, .piano-actions .mini-cart__label, .piano-actions .account-menu .piano-icon-button span { display: none; }
    .piano-actions { gap: 0; }
    .piano-actions .piano-icon-button, .piano-actions .mini-cart { padding-inline: .3rem; }
    .piano-footer__top { grid-template-columns: 1.4fr 1fr 1fr; }
    .piano-footer__contact { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
    .piano-announcement { font-size: .66rem; }
    .piano-announcement__inner { min-height: 30px; gap: .5rem; }
    .piano-announcement__inner span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .piano-footer__top { grid-template-columns: 1fr 1fr; gap: 2rem 1rem; }
    .piano-footer__brand, .piano-footer__contact { grid-column: 1 / -1; }
    .piano-footer__legal { flex-direction: column; gap: .25rem; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    [data-reveal] { opacity: 1; transform: none; }
}