/* =========================================================
   CHEMPETRO — CATALOG PREMIUM / APPLE-LIKE
   Visual language based on the supplied IranChem example.
   Works with the existing 5 independent catalog HTML modules.
   ========================================================= */

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

.catalog-page {
    --catalog-primary: #263746;
    --catalog-secondary: #405365;
    --catalog-muted: #607181;
    --catalog-bg: #f7fafc;
    --catalog-surface: rgba(255,255,255,.72);
    --catalog-border: rgba(38,55,70,.14);
    --catalog-border-soft: rgba(38,55,70,.08);
    --catalog-shadow: 0 22px 60px rgba(38,55,70,.12);
    --catalog-shadow-hover: 0 28px 70px rgba(38,55,70,.16);
    --catalog-radius-xl: 32px;
    --catalog-radius-lg: 24px;
    --catalog-radius-md: 16px;
    --catalog-transition: .35s cubic-bezier(.22,.61,.36,1);

    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0 0 54px;
    color: var(--catalog-primary);
    background: var(--catalog-bg);
    font-family: inherit;
    line-height: 1.5;
    overflow: hidden;
}

.catalog-page img {
    display: block;
    max-width: 100%;
}

.catalog-page a {
    color: inherit;
    text-decoration: none;
}

.catalog-page button,
.catalog-page input,
.catalog-page textarea,
.catalog-page select {
    font: inherit;
}

.catalog-page button {
    cursor: pointer;
}

.catalog-container {
    width: min(1200px,calc(100% - 48px));
    margin-inline: auto;
}

/* ---------- HERO ---------- */

.catalog-hero {
    position: relative;
    margin-top: 16px;
    overflow: hidden;
    border-radius: var(--catalog-radius-xl);
    background:
        radial-gradient(circle at 85% 18%,rgba(255,255,255,.15),transparent 27%),
        linear-gradient(135deg,var(--catalog-primary),var(--catalog-secondary));
    box-shadow: 0 30px 80px rgba(38,55,70,.18);
}

.catalog-hero-inner {
    position: relative;
    min-height: 420px;
    padding: 64px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.catalog-hero-inner::after {
    position: absolute;
    right: -100px;
    bottom: -130px;
    width: 380px;
    height: 380px;
    content: "";
    border-radius: 50%;
    background: rgba(255,255,255,.055);
    pointer-events: none;
}

.catalog-eyebrow,
.catalog-section-label {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    color: var(--catalog-secondary);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .13em;
    text-transform: uppercase;
}

.catalog-eyebrow {
    margin-bottom: 20px;
    padding: 8px 12px;
    border: 1px solid rgba(255,255,255,.35);
    border-radius: 999px;
    background: rgba(255,255,255,.12);
    color: #fff;
    backdrop-filter: blur(16px);
}

.catalog-eyebrow::before,
.catalog-section-label::before {
    width: 7px;
    height: 7px;
    content: "";
    flex: 0 0 7px;
    border-radius: 50%;
    background: currentColor;
}

.catalog-hero h1 {
    max-width: 850px;
    margin: 0 0 18px;
    color: #fff;
    font-size: clamp(42px,5.5vw,72px);
    font-weight: 600;
    line-height: .96;
    letter-spacing: -.065em;
}

.catalog-hero p {
    max-width: 650px;
    margin: 0;
    color: rgba(255,255,255,.78);
    font-size: 14px;
    line-height: 1.7;
}

.catalog-hero-stats {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 8px;
    max-width: 650px;
    margin-top: 28px;
}

.catalog-stat {
    padding: 14px 16px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 16px;
    background: rgba(255,255,255,.10);
    backdrop-filter: blur(18px);
}

.catalog-stat strong {
    display: block;
    color: #fff;
    font-size: 12px;
    font-weight: 700;
}

.catalog-stat span {
    display: block;
    margin-top: 3px;
    color: rgba(255,255,255,.62);
    font-size: 9px;
}

/* ---------- CATEGORY SECTION ---------- */

.catalog-category-section {
    padding: 54px 0 18px;
}

.catalog-section-label {
    margin-bottom: 14px;
}

.catalog-section-label::before {
    width: 6px;
    height: 6px;
    flex-basis: 6px;
}

.catalog-category {
    max-width: 800px;
    margin: 0 0 18px;
    color: var(--catalog-primary);
    font-size: clamp(36px,5vw,62px);
    font-weight: 600;
    line-height: .98;
    letter-spacing: -.055em;
}

.catalog-category-box {
    padding: 26px;
    border: 1px solid var(--catalog-border);
    border-radius: var(--catalog-radius-lg);
    background: var(--catalog-surface);
    box-shadow: 0 14px 38px rgba(38,55,70,.06);
    backdrop-filter: blur(20px);
}

.catalog-category-grid {
    display: grid;
    grid-template-columns: repeat(3,minmax(0,1fr));
    gap: 10px;
}

.catalog-category-grid > * {
    min-width: 0;
}

/* ---------- CONTROLS ---------- */

.catalog-controls {
    display: grid;
    grid-template-columns: minmax(0,1fr) 240px auto;
    align-items: center;
    gap: 10px;
    margin: 24px 0 28px;
}

.catalog-search,
.catalog-select {
    width: 100%;
    min-height: 50px;
    border: 1px solid var(--catalog-border);
    border-radius: 999px;
    outline: none;
    background: rgba(255,255,255,.74);
    color: var(--catalog-primary);
    box-shadow: 0 10px 30px rgba(38,55,70,.05);
    backdrop-filter: blur(18px);
    transition:
        border-color var(--catalog-transition),
        box-shadow var(--catalog-transition),
        transform var(--catalog-transition);
}

.catalog-search {
    padding: 0 20px;
}

.catalog-select {
    padding: 0 18px;
    appearance: auto;
}

.catalog-search::placeholder {
    color: var(--catalog-muted);
}

.catalog-search:focus,
.catalog-select:focus {
    border-color: rgba(64,83,101,.38);
    box-shadow: 0 14px 34px rgba(38,55,70,.10);
}

.catalog-results {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 14px;
    border: 1px solid var(--catalog-border);
    border-radius: 999px;
    background: rgba(255,255,255,.55);
    color: var(--catalog-secondary);
    font-size: 10px;
    font-weight: 800;
    white-space: nowrap;
}

/* ---------- PRODUCT GRID ---------- */

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(3,minmax(0,1fr));
    gap: 10px;
    width: 100%;
}

.catalog-card {
    position: relative;
    min-width: 0;
    min-height: 300px;
    padding: 24px;
    overflow: hidden;
    border: 1px solid var(--catalog-border);
    border-radius: var(--catalog-radius-lg);
    background:
        linear-gradient(145deg,rgba(255,255,255,.86),rgba(255,255,255,.58));
    box-shadow: 0 14px 38px rgba(38,55,70,.06);
    backdrop-filter: blur(20px);
    transition:
        transform var(--catalog-transition),
        box-shadow var(--catalog-transition),
        border-color var(--catalog-transition);
}

.catalog-card::before {
    position: absolute;
    right: -50px;
    top: -50px;
    width: 145px;
    height: 145px;
    content: "";
    border-radius: 50%;
    background: rgba(64,83,101,.065);
    transition: transform var(--catalog-transition);
}

.catalog-card::after {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 0;
    height: 1px;
    content: "";
    background: linear-gradient(
        90deg,
        transparent,
        rgba(64,83,101,.16),
        transparent
    );
}

.catalog-card:hover {
    transform: translateY(-6px);
    border-color: rgba(64,83,101,.22);
    box-shadow: var(--catalog-shadow-hover);
}

.catalog-card:hover::before {
    transform: scale(1.18);
}

.catalog-card-top,
.catalog-card-body,
.catalog-card-meta {
    position: relative;
    z-index: 2;
}

.catalog-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    min-height: 28px;
}

.catalog-card-body {
    padding-top: 58px;
}

.catalog-card h3 {
    margin: 0 0 10px;
    color: var(--catalog-primary);
    font-size: 14px;
    font-weight: 200;
    line-height: 1.08;
    letter-spacing: -.04em;
}

.catalog-card-description {
    max-width: 360px;
    margin: 0;
    color: var(--catalog-muted);
    font-size: 11px;
    line-height: 1.7;
}

.catalog-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 18px;
}

.catalog-tag {
    display: inline-flex;
    align-items: center;
    min-height: 25px;
    padding: 0 9px;
    border: 1px solid var(--catalog-border);
    border-radius: 999px;
    background: rgba(255,255,255,.52);
    color: var(--catalog-secondary);
    font-size: 8px;
    font-weight: 800;
    letter-spacing: .04em;
}

.catalog-en {
    display: block;
    margin-top: 5px;
    color: var(--catalog-muted);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: -.01em;
}

.catalog-card[hidden] {
    display: none !important;
}

/* ---------- SEO / CTA ---------- */

.catalog-seo {
    padding: 52px 0 10px;
}

.catalog-seo-box,
.catalog-cta-inner {
    padding: 34px;
    border: 1px solid var(--catalog-border);
    border-radius: var(--catalog-radius-lg);
    background: var(--catalog-surface);
    box-shadow: 0 14px 38px rgba(38,55,70,.06);
    backdrop-filter: blur(20px);
}

.catalog-seo-grid {
    display: grid;
    grid-template-columns: repeat(2,minmax(0,1fr));
    gap: 28px;
}

.catalog-seo h2,
.catalog-seo h3 {
    margin: 0 0 12px;
    color: var(--catalog-primary);
    font-weight: 600;
    letter-spacing: -.035em;
}

.catalog-seo h2 {
    font-size: clamp(28px,4vw,46px);
    line-height: 1;
}

.catalog-seo h3 {
    font-size: 20px;
}

.catalog-seo p,
.catalog-seo li {
    color: var(--catalog-muted);
    font-size: 12px;
    line-height: 1.75;
}

.catalog-seo ul {
    margin: 0;
    padding-left: 18px;
}

/* ---------- EMPTY ---------- */

.catalog-empty {
    margin-top: 18px;
    padding: 28px;
    border: 1px dashed var(--catalog-border);
    border-radius: var(--catalog-radius-lg);
    background: rgba(255,255,255,.5);
    color: var(--catalog-muted);
    text-align: center;
    font-size: 12px;
}

/* ---------- SPLIT MODULES ---------- */

.catalog-page--part {
    padding-bottom: 12px;
}

.catalog-page--split .catalog-grid {
    width: 100%;
}

.catalog-page--split .catalog-card {
    min-height: 300px;
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 1000px) {
    .catalog-container {
        width: min(calc(100% - 30px),1200px);
    }

    .catalog-hero-inner {
        padding: 52px 42px;
    }

    .catalog-grid {
        grid-template-columns: repeat(2,minmax(0,1fr));
    }

    .catalog-category-grid {
        grid-template-columns: repeat(2,minmax(0,1fr));
    }
}

@media (max-width: 700px) {
    .catalog-container {
        width: calc(100% - 20px);
    }

    .catalog-hero {
        margin-top: 10px;
        border-radius: 24px;
    }

    .catalog-hero-inner {
        min-height: 500px;
        padding: 42px 18px;
        align-items: flex-start;
    }

    .catalog-hero h1 {
        max-width: 96%;
        font-size: clamp(38px,12vw,54px);
    }

    .catalog-hero p {
        max-width: 96%;
        font-size: 13px;
    }

    .catalog-hero-stats {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .catalog-category-section {
        padding: 32px 0 12px;
    }

    .catalog-category {
        font-size: clamp(34px,10vw,50px);
    }

    .catalog-category-box {
        padding: 18px;
        border-radius: 20px;
    }

    .catalog-category-grid,
    .catalog-seo-grid {
        grid-template-columns: 1fr;
    }

    .catalog-controls {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .catalog-results {
        justify-content: flex-start;
        width: fit-content;
    }

    .catalog-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .catalog-card {
        min-height: 270px;
        padding: 22px;
        border-radius: 22px;
    }

    .catalog-card-body {
        padding-top: 52px;
    }

    .catalog-card h3 {
        font-size: 21px;
    }

    .catalog-seo-box,
    .catalog-cta-inner {
        padding: 24px 20px;
        border-radius: 22px;
    }
}

@media (max-width: 420px) {
    .catalog-container {
        width: calc(100% - 14px);
    }

    .catalog-hero-inner {
        padding: 34px 16px;
    }

    .catalog-stat {
        padding: 12px;
    }

    .catalog-card {
        min-height: 255px;
        padding: 19px;
    }
}