/* Explain: Styles for buttons, cards, site header behavior, and filter dropdowns. */
.btn-clay {
    border: 1px solid var(--primary-color);
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 10px 20px rgba(11, 43, 77, 0.25);
    transition: transform 250ms ease, box-shadow 250ms ease, background 250ms ease;
}

.btn-clay:hover {
    background: var(--primary-hover);
    box-shadow: 0 12px 24px rgba(11, 43, 77, 0.35);
    transform: translateY(-2px);
}

.btn-accent {
    border: 1px solid var(--accent-color);
    background: var(--accent-color);
    color: #ffffff;
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.25);
    transition: transform 250ms ease, box-shadow 250ms ease, background 250ms ease;
}

.btn-accent:hover {
    background: #bfa035;
    box-shadow: 0 12px 24px rgba(212, 175, 55, 0.35);
    transform: translateY(-2px);
}

.btn-quiet {
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #ffffff;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    transition: background 250ms ease, transform 250ms ease, border-color 250ms ease;
}

.btn-quiet:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

.arch-frame {
    border-radius: var(--radius-arch);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

.presentation-card {
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    box-shadow: var(--shadow-paper);
}

.service-card {
    border: 1px solid transparent;
    background: var(--surface-color);
    transition: transform 300ms ease, box-shadow 300ms ease, border-color 300ms ease;
}

.service-card:hover {
    border-color: var(--accent-color);
    box-shadow: var(--shadow-soft);
    transform: translateY(-5px);
}

.inquiry-field {
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-color);
    transition: border-color 250ms ease, box-shadow 250ms ease;
}

.inquiry-field:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.15);
    outline: none;
}

.site-header {
    transition: background-color 300ms ease, box-shadow 300ms ease, padding 300ms ease;
}

.site-logo {
    height: 7.5rem;
    max-height: 7.5rem;
    width: auto;
    object-fit: contain;
    transition: height 350ms ease, max-height 350ms ease, transform 350ms ease;
}

@media (min-width: 640px) {
    .site-logo {
        height: 10.5rem;
        max-height: 10.5rem;
    }
}

.site-nav {
    transition: transform 350ms ease, padding 350ms ease;
    transform-origin: top center;
}

.site-header.is-scrolled {
    padding-top: 0.5rem;
}

.site-header.is-scrolled .site-logo {
    height: 4rem;
    max-height: 4rem;
    transform: translateY(-0.25rem);
}

.site-header.is-scrolled .site-nav {
    transform: scale(0.9);
}

@media (min-width: 640px) {
    .site-header.is-scrolled .site-logo {
        height: 4.75rem;
        max-height: 4.75rem;
    }
}

.wa-hint.is-showing,
.phone-hint.is-showing {
    opacity: 1;
}

.catalog-dropdown {
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity 220ms ease, transform 220ms ease, visibility 0s linear 220ms;
}

.catalog-menu:hover .catalog-dropdown,
.catalog-menu:focus-within .catalog-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
    transition: opacity 220ms ease, transform 220ms ease, visibility 0s;
}

.catalog-menu:hover .fa-chevron-down,
.catalog-menu:focus-within .fa-chevron-down {
    transform: rotate(180deg);
}

/* Keep Latin manufacturer names together in the RTL product catalogue. */
.catalog-brand-label {
    display: inline-block;
    width: max-content;
    max-width: none;
    white-space: nowrap;
    word-break: normal;
    overflow-wrap: normal;
    flex-shrink: 0;
    direction: ltr;
    unicode-bidi: isolate;
}

/* Show complete product and manufacturer photographs without cropping or distortion. */
.product-media-image,
.speroni-product-image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

/* Keep identifiers such as VS 16-8 and Movitec V 10/18 on one line in RTL copy. */
.product-model-code {
    display: inline-block;
    white-space: nowrap;
    word-break: normal;
    overflow-wrap: normal;
    hyphens: none;
    direction: ltr;
    unicode-bidi: isolate;
}

.speroni-specs {
    min-width: 0;
    overflow-wrap: anywhere;
}

.speroni-performance {
    max-width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-soft);
    margin-block: 1rem;
}

.speroni-performance table {
    width: 100%;
    min-width: 42rem;
    border-collapse: collapse;
    color: var(--text-color);
    direction: ltr;
}

.speroni-performance th,
.speroni-performance td {
    padding: 0.8rem 0.9rem;
    text-align: center;
    white-space: nowrap;
    border: 1px solid var(--border-color);
}

.speroni-performance th {
    color: var(--clay-color);
    background: var(--surface-deep);
}

/* Compact KSB introduction without scaling or clipping its content. */
.catalog-intro-compact {
    width: 100%;
    margin-inline: auto;
    padding: 0.75rem;
    border-radius: 1rem;
}

.catalog-intro-compact > .aspect-video {
    max-width: 21rem;
    margin-bottom: 0.75rem;
    border-radius: 0.75rem;
}

.catalog-intro-compact .prose h3 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
    line-height: 1.4;
}

.catalog-intro-compact .prose p {
    margin-bottom: 0.75rem;
}

.catalog-intro-compact .btn {
    height: auto;
    min-height: 2.75rem;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    white-space: normal;
}

@media (min-width: 768px) {
    .catalog-intro-compact {
        width: 50%;
    }
}

/* Compact, professional filter dropdowns for the product catalogue. */
.filter-select {
    appearance: none;
    -webkit-appearance: none;
    min-height: 2.75rem;
    padding-block: 0.4rem;
    padding-inline-start: 1rem;
    padding-inline-end: 2.4rem;
    border: 1px solid var(--border-color);
    border-radius: 0.9rem;
    background-color: rgba(0, 0, 0, 0.35);
    color: var(--text-color);
    line-height: 1.4;
    cursor: pointer;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23fde047' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 0.9rem center;
    background-size: 0.85rem;
    transition: border-color 250ms ease, background-color 250ms ease;
}

.filter-select:hover,
.filter-select:focus {
    border-color: var(--primary-color);
    outline: none;
}

.filter-select option {
    background-color: #0b1120;
    color: #ffffff;
}