/* ==========================================================================
   Сертификаты — только изображения, одинакового размера
   ========================================================================== */

.sr-page {
    --sr-bg: #fcf0ea;
    --sr-card: #f8ece5;
    --sr-paper: #fffaf7;
    --sr-line: #e2cbbc;
    --sr-accent: #b28663;
    --sr-ink: #1d1d1d;
    --sr-shadow: 0 28px 62px rgba(122, 78, 45, 0.16);
    --sr-shadow-soft: 0 16px 38px rgba(122, 78, 45, 0.10);

    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 10% 2%, rgba(255, 255, 255, 0.9), transparent 32%),
        radial-gradient(circle at 94% 18%, rgba(178, 134, 99, 0.12), transparent 30%),
        radial-gradient(circle at 2% 86%, rgba(178, 134, 99, 0.10), transparent 28%),
        var(--sr-bg);
}

.sr-page *,
.sr-page *::before,
.sr-page *::after {
    box-sizing: border-box;
}

.sr-container {
    width: min(1260px, 100%);
    margin: 0 auto;
    padding: 0 20px;
}

.sr-section {
    position: relative;
    padding: clamp(46px, 5.5vw, 88px) 0;
}

.sr-section--head {
    padding-bottom: clamp(24px, 3vw, 40px);
}

.sr-section--flush {
    padding-top: 0;
}

.sr-stars {
    position: absolute;
    top: 3%;
    right: -40px;
    width: clamp(180px, 22vw, 340px);
    opacity: 0.18;
    transform: rotate(24deg);
    pointer-events: none;
    user-select: none;
}

/* --- шапка --------------------------------------------------------------- */

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

.sr-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    font-family: "Spectral", serif;
    font-size: 13px;
    font-style: italic;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--sr-accent);
}

.sr-eyebrow::before,
.sr-eyebrow::after {
    content: "";
    width: 40px;
    height: 1px;
    background: var(--sr-accent);
    opacity: 0.6;
}

.sr-title {
    margin: 0;
    font-family: "Forum", serif;
    font-weight: 600;
    font-size: clamp(2.2rem, 4.2vw, 3.8rem) !important;
    line-height: 1.1;
    color: var(--sr-ink);
}

.sr-title::after {
    content: "";
    display: block;
    width: 96px;
    height: 1px;
    margin: 26px auto 0;
    background: var(--sr-accent);
    opacity: 0.55;
}

/* ==========================================================================
   СЕТКА
   ========================================================================== */

.sr-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(22px, 2.4vw, 34px);
}

/* --- рамка сертификата --------------------------------------------------- */

.sr-item {
    position: relative;
    display: block;
    padding: clamp(14px, 1.4vw, 20px);
    border-radius: 28px;
    background: var(--sr-card);
    border: 1px solid rgba(226, 203, 188, 0.75);
    box-shadow: var(--sr-shadow-soft);
    text-decoration: none;
    transition: transform .45s cubic-bezier(.22, .61, .36, 1), box-shadow .45s ease, border-color .45s ease, background-color .45s ease;
}

.sr-item:hover,
.sr-item:focus-visible {
    transform: translateY(-8px);
    border-color: var(--sr-accent);
    background: #fbf3ee;
    box-shadow: var(--sr-shadow);
}

/* окно одинакового размера: пропорции альбомного листа,
   сам сертификат вписан целиком и никогда не обрезается */
.sr-item__window {
    display: block;
    position: relative;
    overflow: hidden;
    aspect-ratio: 297 / 210;
    border-radius: 16px;
    background: var(--sr-paper);
    box-shadow: inset 0 0 0 1px rgba(178, 134, 99, 0.22);
}

.sr-item__window img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform .8s cubic-bezier(.22, .61, .36, 1);
}

.sr-item:hover .sr-item__window img {
    transform: scale(1.035);
}

/* тонкая золотая рамка, которая проявляется при наведении */
.sr-item__frame {
    position: absolute;
    inset: clamp(20px, 2vw, 28px);
    border: 1px solid rgba(178, 134, 99, 0.55);
    border-radius: 10px;
    opacity: 0;
    transform: scale(1.015);
    pointer-events: none;
    transition: opacity .45s ease, transform .45s cubic-bezier(.22, .61, .36, 1);
}

.sr-item:hover .sr-item__frame {
    opacity: 1;
    transform: scale(1);
}

/* мягкое свечение поверх бумаги */
.sr-item__window::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(150deg, rgba(255, 255, 255, 0.5) 0%, rgba(255, 255, 255, 0) 42%);
    opacity: 0.7;
    pointer-events: none;
    transition: opacity .45s ease;
}

.sr-item:hover .sr-item__window::after {
    opacity: 0.35;
}

/* ==========================================================================
   ПОЯВЛЕНИЕ ПРИ СКРОЛЛЕ (класс sr-anim ставит скрипт)
   ========================================================================== */

.sr-page.sr-anim .sr-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .8s cubic-bezier(.22, .61, .36, 1), transform .8s cubic-bezier(.22, .61, .36, 1);
    will-change: opacity, transform;
}

.sr-page.sr-anim .sr-reveal.is-visible {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    .sr-page.sr-anim .sr-reveal,
    .sr-item {
        transition: none !important;
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ==========================================================================
   АДАПТИВ
   ========================================================================== */

@media (max-width: 767.98px) {
    .sr-stars {
        display: none;
    }

    .sr-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 18px;
    }

    .sr-item {
        border-radius: 24px;
        padding: 12px;
    }

    .sr-item__frame {
        inset: 18px;
    }
}