:root {
    --catalog-navy: #0f1d33;
    --catalog-navy-soft: #162845;
    --catalog-forest: #1a472a;
    --catalog-green: #2d7a47;
    --catalog-bg: #f6f8fb;
    --catalog-border: #e2e8f0;
    --catalog-muted: #64748b;
    --catalog-wa: #25d366;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--catalog-navy);
    background: var(--catalog-bg);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
    color: inherit;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
    outline: 3px solid #78a889;
    outline-offset: 3px;
}

.catalog-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid rgba(226, 232, 240, .86);
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(18px);
}

.catalog-topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1180px;
    min-height: 76px;
    margin: 0 auto;
    padding: .75rem 1.25rem;
}

.catalog-logo {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}

.catalog-logo img {
    width: auto;
    height: 46px;
}

.catalog-back {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    min-height: 44px;
    padding: .65rem .9rem;
    border: 1px solid var(--catalog-border);
    border-radius: 999px;
    color: var(--catalog-navy-soft);
    font-size: .9rem;
    font-weight: 700;
    text-decoration: none;
    transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
}

.catalog-back:hover {
    border-color: #b8c8d7;
    background: #f8fafc;
    transform: translateX(-2px);
}

.catalog-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #091322 0%, #162845 53%, #1a472a 100%);
    color: #fff;
}

.catalog-hero::after {
    position: absolute;
    right: -8rem;
    bottom: -10rem;
    width: 28rem;
    height: 28rem;
    border-radius: 50%;
    background: rgba(71, 159, 99, .18);
    content: "";
    filter: blur(8px);
}

.catalog-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 1180px;
    margin: 0 auto;
    padding: 5.5rem 1.25rem 4.5rem;
}

.catalog-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .45rem;
    margin-bottom: 1.6rem;
    color: rgba(255, 255, 255, .62);
    font-size: .82rem;
}

.catalog-breadcrumb a {
    text-decoration: none;
}

.catalog-breadcrumb a:hover {
    color: #fff;
}

.catalog-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: 1rem;
    color: #a3cfb1;
    font-size: .76rem;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.catalog-eyebrow::before {
    width: .5rem;
    height: .5rem;
    border-radius: 50%;
    background: #75b78a;
    content: "";
}

.catalog-hero h1 {
    max-width: 820px;
    margin: 0;
    font-size: clamp(2.1rem, 5vw, 4.4rem);
    line-height: 1.06;
    letter-spacing: -.04em;
}

.catalog-hero p {
    max-width: 720px;
    margin: 1.35rem 0 0;
    color: rgba(255, 255, 255, .72);
    font-size: clamp(1rem, 2vw, 1.22rem);
    line-height: 1.7;
}

.catalog-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    margin-top: 2rem;
}

.catalog-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .55rem;
    min-height: 48px;
    padding: .8rem 1.15rem;
    border-radius: .9rem;
    font-size: .95rem;
    font-weight: 800;
    text-decoration: none;
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
}

.catalog-button:hover {
    transform: translateY(-2px);
}

.catalog-button--primary {
    background: var(--catalog-wa);
    color: #073b1a;
    box-shadow: 0 12px 24px rgba(37, 211, 102, .2);
}

.catalog-button--secondary {
    border: 1px solid rgba(255, 255, 255, .24);
    background: rgba(255, 255, 255, .1);
    color: #fff;
}

.catalog-main {
    max-width: 1180px;
    margin: 0 auto;
    padding: 3.75rem 1.25rem 5rem;
}

.catalog-section {
    margin-top: 3.5rem;
}

.catalog-section:first-child {
    margin-top: 0;
}

.catalog-section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.35rem;
}

.catalog-section-heading h2 {
    margin: 0;
    color: var(--catalog-navy);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    letter-spacing: -.03em;
}

.catalog-section-heading p {
    max-width: 620px;
    margin: .55rem 0 0;
    color: var(--catalog-muted);
    line-height: 1.65;
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

.catalog-card {
    overflow: hidden;
    border: 1px solid var(--catalog-border);
    border-radius: 1.25rem;
    background: #fff;
    box-shadow: 0 8px 22px rgba(15, 29, 51, .05);
    transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}

.catalog-card:hover {
    border-color: #c7d5df;
    box-shadow: 0 18px 34px rgba(15, 29, 51, .11);
    transform: translateY(-4px);
}

.catalog-card-media {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 250px;
    overflow: hidden;
    background: #f8fafc;
}

.catalog-card-media img {
    width: 100%;
    height: 250px;
    object-fit: contain;
    mix-blend-mode: multiply;
}

.catalog-card-content {
    padding: 1.25rem;
}

.catalog-card-content h2,
.catalog-card-content h3 {
    margin: 0;
    color: var(--catalog-navy);
    font-size: 1.18rem;
    letter-spacing: -.02em;
}

.catalog-card-content p {
    margin: .55rem 0 0;
    color: var(--catalog-muted);
    font-size: .94rem;
    line-height: 1.6;
}

.catalog-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
    margin-bottom: .75rem;
}

.catalog-pill {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: .3rem .6rem;
    border-radius: 999px;
    background: #edf5f0;
    color: var(--catalog-forest);
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.catalog-pill--navy {
    background: #eef2f7;
    color: var(--catalog-navy-soft);
}

.catalog-price {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: .75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #edf1f5;
}

.catalog-price strong {
    color: var(--catalog-forest);
    font-size: 1.35rem;
    letter-spacing: -.03em;
}

.catalog-price span {
    color: var(--catalog-muted);
    font-size: .78rem;
    text-align: right;
}

.catalog-card-actions {
    display: grid;
    grid-template-columns: 1fr;
    gap: .65rem;
    margin-top: 1rem;
}

.catalog-card-actions .catalog-button {
    width: 100%;
}

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

.catalog-info-card {
    padding: 1.25rem;
    border: 1px solid var(--catalog-border);
    border-radius: 1rem;
    background: #fff;
}

.catalog-info-card strong {
    display: block;
    margin-bottom: .4rem;
    color: var(--catalog-navy);
}

.catalog-info-card span {
    color: var(--catalog-muted);
    font-size: .92rem;
    line-height: 1.55;
}

.catalog-faq {
    display: grid;
    gap: .7rem;
}

.catalog-faq details {
    padding: 1rem 1.15rem;
    border: 1px solid var(--catalog-border);
    border-radius: .95rem;
    background: #fff;
}

.catalog-faq summary {
    cursor: pointer;
    color: var(--catalog-navy);
    font-weight: 800;
}

.catalog-faq p {
    margin: .8rem 0 0;
    color: var(--catalog-muted);
    line-height: 1.65;
}

.catalog-footer {
    border-top: 1px solid rgba(255, 255, 255, .08);
    background: #091322;
    color: rgba(255, 255, 255, .68);
}

.catalog-footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1180px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem;
    font-size: .86rem;
}

.brand-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: min(82%, 260px);
    min-height: 120px;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 1.5rem;
    background: linear-gradient(135deg, #162845, #1a472a);
    color: #fff;
    font-size: clamp(1.6rem, 4vw, 2.45rem);
    font-weight: 900;
    letter-spacing: -.05em;
    line-height: .95;
    text-align: center;
    text-transform: uppercase;
}

.brand-mark span {
    display: block;
    margin-top: .35rem;
    color: #a3cfb1;
    font-size: .55em;
    letter-spacing: .15em;
}

.brand-mark--adasoy {
    background: linear-gradient(135deg, #5b1524, #a83d2d);
}

.brand-mark--doyum {
    background: linear-gradient(135deg, #123c57, #1c7a86);
}

.catalog-note {
    margin-top: 1rem;
    padding: .9rem 1rem;
    border-left: 4px solid #78a889;
    border-radius: .75rem;
    background: #edf5f0;
    color: #1a472a;
    font-size: .9rem;
    line-height: 1.6;
}

.catalog-product-layout {
    display: grid;
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 1.5rem;
    align-items: stretch;
}

.catalog-product-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 430px;
    overflow: hidden;
    border: 1px solid var(--catalog-border);
    border-radius: 1.35rem;
    background: #fff;
    box-shadow: 0 8px 22px rgba(15, 29, 51, .05);
}

.catalog-product-visual img {
    width: 100%;
    height: 430px;
    object-fit: contain;
    mix-blend-mode: multiply;
}

.catalog-product-panel {
    padding: 1.75rem;
    border: 1px solid var(--catalog-border);
    border-radius: 1.35rem;
    background: #fff;
    box-shadow: 0 8px 22px rgba(15, 29, 51, .05);
}

.catalog-product-panel h2 {
    margin: 0;
    color: var(--catalog-navy);
    font-size: clamp(1.6rem, 3vw, 2.35rem);
    letter-spacing: -.04em;
}

.catalog-product-panel > p {
    margin: .8rem 0 0;
    color: var(--catalog-muted);
    line-height: 1.7;
}

.catalog-spec-list {
    display: grid;
    gap: .65rem;
    margin: 1.5rem 0;
}

.catalog-spec-list div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .75rem .85rem;
    border-radius: .75rem;
    background: #f8fafc;
}

.catalog-spec-list dt {
    color: var(--catalog-muted);
    font-size: .88rem;
}

.catalog-spec-list dd {
    margin: 0;
    color: var(--catalog-navy);
    font-size: .92rem;
    font-weight: 800;
    text-align: right;
}

@media (max-width: 720px) {
    .catalog-topbar-inner {
        min-height: 68px;
        padding: .65rem 1rem;
    }

    .catalog-logo img {
        height: 40px;
    }

    .catalog-back {
        padding: .55rem .72rem;
        font-size: .8rem;
    }

    .catalog-hero-inner {
        padding: 4.2rem 1rem 3.5rem;
    }

    .catalog-main {
        padding: 2.75rem 1rem 4rem;
    }

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

    .catalog-product-layout {
        grid-template-columns: 1fr;
    }

    .catalog-product-visual,
    .catalog-product-visual img {
        min-height: 300px;
        height: 300px;
    }

    .catalog-card-media,
    .catalog-card-media img {
        min-height: 220px;
        height: 220px;
    }

    .catalog-section-heading {
        display: block;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
    }
}