/* TemaKoyu: Koyu header, minimal hero, Plus Jakarta Sans, turuncu aksan */

:root {
    --tk-dark: #0f172a;
    --tk-dark-soft: #1e293b;
    --tk-accent: #f97316;
    --tk-accent-hover: #ea580c;
    --tk-bg: #f1f5f9;
    --tk-card: #ffffff;
    --tk-text: #1e293b;
    --tk-text-muted: #64748b;
    --tk-border: #e2e8f0;
    --tk-radius: 10px;
    --tk-shadow: 0 1px 3px rgba(0,0,0,0.08);
    --tk-shadow-hover: 0 10px 25px rgba(15,23,42,0.12);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body.theme-koyu {
    font-family: 'Plus Jakarta Sans', -apple-system, sans-serif;
    background: var(--tk-bg);
    color: var(--tk-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { width: 92%; padding: 0 16px; } }

/* ========== Header: koyu ========== */
.theme-koyu-header {
    background: var(--tk-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.theme-koyu-header .header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 20px;
}

.theme-koyu-header .brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.theme-koyu-header .brand-img {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

.theme-koyu-header .header-search {
    flex: 1;
    max-width: 380px;
    position: relative;
    display: flex;
    align-items: center;
}

.theme-koyu-header .header-search input {
    width: 100%;
    padding: 10px 44px 10px 14px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--tk-radius);
    font-size: 0.9rem;
    font-family: inherit;
    background: rgba(255,255,255,0.06);
    color: #fff;
    transition: border-color 0.2s, background 0.2s;
}

.theme-koyu-header .header-search input::placeholder { color: rgba(255,255,255,0.5); }

.theme-koyu-header .header-search input:focus {
    outline: none;
    border-color: var(--tk-accent);
    background: rgba(255,255,255,0.08);
}

.theme-koyu-header .header-search button {
    position: absolute;
    right: 6px;
    background: var(--tk-accent);
    color: #fff;
    border: none;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-koyu-header .header-search button:hover { background: var(--tk-accent-hover); }

.theme-koyu-header .action-link {
    color: #e2e8f0;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.theme-koyu-header .action-link:hover { color: var(--tk-accent); }

.theme-koyu-header .hamburger {
    display: none;
    cursor: pointer;
    font-size: 1.3rem;
    color: #e2e8f0;
    border: none;
    background: none;
    padding: 8px;
    line-height: 1;
}
.theme-koyu-header .hamburger i { pointer-events: none; }

/* Nav: aynı koyu, ince üst çizgi */
.theme-koyu-nav {
    background: var(--tk-dark-soft);
    border-top: 1px solid rgba(255,255,255,0.06);
}

.theme-koyu-nav .container { padding: 0 24px; }

.theme-koyu-nav .nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.theme-koyu-nav .nav-link {
    color: #cbd5e1;
    text-decoration: none;
    padding: 12px 16px;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
    border-radius: 8px;
    transition: background 0.2s, color 0.2s;
}

.theme-koyu-nav .nav-link:hover {
    background: rgba(249,115,22,0.15);
    color: var(--tk-accent);
}

.theme-koyu-nav .nav-item { position: relative; }

.theme-koyu-nav .dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--tk-dark);
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow-hover);
    padding: 8px 0;
    list-style: none;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: 0.2s;
    z-index: 1001;
    border: 1px solid rgba(255,255,255,0.08);
}

.theme-koyu-nav .nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-koyu-nav .dropdown-menu .dropdown-content ul { list-style: none; padding: 0; margin: 0; }

.theme-koyu-nav .dropdown-menu .dropdown-item,
.theme-koyu-nav .dropdown-menu .dropdown-content ul li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    color: #e2e8f0;
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s, color 0.2s;
}

.theme-koyu-nav .dropdown-menu .dropdown-item:hover,
.theme-koyu-nav .dropdown-menu .dropdown-content ul li a:hover {
    background: rgba(249,115,22,0.12);
    color: var(--tk-accent);
}

.theme-koyu-nav .submenu {
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 220px;
    background: var(--tk-dark);
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow-hover);
    padding: 8px 0;
    list-style: none;
    margin: 0;
    display: none;
    border: 1px solid rgba(255,255,255,0.08);
    z-index: 1002;
}

.theme-koyu-nav .dropdown-menu li:hover > .submenu { display: block; }

@media (max-width: 992px) {
    .theme-koyu-header { position: relative; }
    .theme-koyu-header .header-row { flex-wrap: wrap; }
    .theme-koyu-header .brand { order: 1; }
    .theme-koyu-header .hamburger { order: 2; display: block; margin-left: auto; }
    .theme-koyu-header .header-search { order: 3; width: 100%; max-width: 100%; flex-basis: 100%; margin-top: 12px; }
    .theme-koyu-header .action-link:not(.mobile-only) { display: none; }
    .theme-koyu-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--tk-dark-soft);
        box-shadow: 0 8px 24px rgba(0,0,0,0.2);
        z-index: 1001;
        max-height: 0;
        overflow: hidden;
        visibility: hidden;
        transition: max-height 0.3s ease, visibility 0.2s;
    }
    .theme-koyu-nav.mobile-open {
        max-height: 80vh;
        overflow-y: auto;
        visibility: visible;
    }
    .theme-koyu-nav .nav-menu { display: flex; flex-direction: column; padding: 12px 0; align-items: stretch; }
    .theme-koyu-nav .nav-item { position: static; }
    .theme-koyu-nav .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        background: transparent;
        margin: 0;
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.25s ease;
    }
    .theme-koyu-nav .nav-item.open .dropdown-menu {
        max-height: 500px;
        background: rgba(0,0,0,0.15);
        margin: 4px 16px 8px;
        padding: 8px 0;
    }
    .theme-koyu-nav .submenu { position: static; display: none; padding-left: 16px; }
    .theme-koyu-nav .nav-item.open .submenu { display: block; }
    /* Birinci seviye öğe açıldığında kendi alt menüsü görünsün */
    .theme-koyu-nav .dropdown-menu li.open > .submenu { display: block; }
}

/* ========== Hero: minimal şerit ========== */
.theme-koyu-hero {
    background: linear-gradient(90deg, var(--tk-dark) 0%, var(--tk-dark-soft) 100%);
    border-bottom: 3px solid var(--tk-accent);
    padding: 16px 0;
}

.theme-koyu-hero .hero-tagline {
    color: rgba(255,255,255,0.9);
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
    text-align: center;
}

/* ========== Main ========== */
.theme-koyu-main {
    flex: 1;
    padding: 40px 0 60px;
}

/* ========== Ortak içerik stilleri ========== */
.theme-koyu-main .section-title {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--tk-text);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.theme-koyu-main .section-subtitle {
    color: var(--tk-text-muted);
    font-size: 1rem;
    margin-bottom: 28px;
}

.process-section { margin-bottom: 48px; }

.theme-koyu-main .process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 24px;
}

.theme-koyu-main .process-card {
    background: var(--tk-card);
    border-radius: var(--tk-radius);
    padding: 28px;
    box-shadow: var(--tk-shadow);
    border: 1px solid var(--tk-border);
    transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
}

.theme-koyu-main .process-card:hover {
    box-shadow: var(--tk-shadow-hover);
    transform: translateY(-2px);
    border-color: var(--tk-accent);
}

.theme-koyu-main .process-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--tk-accent), var(--tk-accent-hover));
    color: #fff;
    border-radius: var(--tk-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 16px;
}

.theme-koyu-main .process-card h3 { font-size: 1.1rem; margin-bottom: 8px; color: var(--tk-text); }
.theme-koyu-main .process-card p { font-size: 0.9rem; color: var(--tk-text-muted); line-height: 1.5; }

/* Grid */
.theme-koyu-main .grid-container,
.theme-koyu-main #productGrid,
body.theme-koyu .grid-container,
body.theme-koyu #productGrid {
    display: grid;
    width: 100%;
    grid-template-columns: 1fr;
    gap: 20px;
}
@media (min-width: 600px) {
    .theme-koyu-main .grid-container, .theme-koyu-main #productGrid,
    body.theme-koyu .grid-container, body.theme-koyu #productGrid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 24px;
    }
}
@media (min-width: 900px) {
    .theme-koyu-main .grid-container, .theme-koyu-main #productGrid,
    body.theme-koyu .grid-container, body.theme-koyu #productGrid {
        grid-template-columns: repeat(3, 1fr) !important;
    }
}
@media (min-width: 1200px) {
    .theme-koyu-main .grid-container, .theme-koyu-main #productGrid,
    body.theme-koyu .grid-container, body.theme-koyu #productGrid {
        grid-template-columns: repeat(4, 1fr) !important;
    }
}

body.theme-koyu .card,
body.theme-koyu .category-card {
    background: var(--tk-card);
    border-radius: var(--tk-radius);
    overflow: hidden;
    box-shadow: var(--tk-shadow);
    border: 1px solid var(--tk-border);
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.2s, transform 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
    min-width: 0;
    max-width: 100%;
}

body.theme-koyu .card:hover,
body.theme-koyu .category-card:hover {
    box-shadow: var(--tk-shadow-hover);
    transform: translateY(-3px);
    border-color: var(--tk-accent);
}

body.theme-koyu .card-image-wrapper {
    width: 100%;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    padding-bottom: 100%;
    height: 0;
}

body.theme-koyu .card-image {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

body.theme-koyu .card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

body.theme-koyu .card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--tk-text);
}

body.theme-koyu .card-desc {
    font-size: 0.9rem;
    color: var(--tk-text-muted);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

body.theme-koyu .card-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
}

body.theme-koyu .card-features .feature-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--tk-bg-secondary, #1e2228);
    color: var(--tk-accent, #4facfe);
    border: 1px solid var(--tk-accent, #4facfe);
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}

body.theme-koyu .card-features .feature-badge i {
    font-size: 0.8rem;
    opacity: 0.9;
}

body.theme-koyu .card:hover .card-features .feature-badge {
    background: rgba(79, 172, 254, 0.12);
    box-shadow: 0 2px 6px rgba(79, 172, 254, 0.2);
}

body.theme-koyu .product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

body.theme-koyu .product-features .feature-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--tk-bg-secondary, #1e2228);
    color: var(--tk-accent, #4facfe);
    border: 2px solid var(--tk-accent, #4facfe);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    transition: background 0.2s, color 0.2s, transform 0.2s;
}

body.theme-koyu .product-features .feature-badge i {
    font-size: 1rem;
}

body.theme-koyu .product-features .feature-badge:hover {
    background: var(--tk-accent, #4facfe);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 172, 254, 0.4);
}

body.theme-koyu .btn-link {
    font-weight: 600;
    color: var(--tk-accent);
    font-size: 0.9rem;
    margin-top: auto;
}

body.theme-koyu .page-header {
    background: var(--tk-dark);
    color: #fff;
    padding: 28px 0;
    margin: -40px -24px 32px -24px;
    padding-left: 24px;
    padding-right: 24px;
    border-bottom: 3px solid var(--tk-accent);
}

body.theme-koyu .page-header h1 { font-size: 1.65rem; font-weight: 700; }

/* Footer */
.theme-koyu-footer {
    background: var(--tk-dark);
    color: #e2e8f0;
    padding: 48px 0 24px;
    margin-top: auto;
    border-top: 3px solid var(--tk-accent);
}

.theme-koyu-footer .footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    margin-bottom: 32px;
}

.theme-koyu-footer .footer-block h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 14px;
    color: #fff;
}

.theme-koyu-footer .footer-logo { height: 38px; margin-bottom: 14px; filter: brightness(0) invert(1); opacity: 0.95; }
.theme-koyu-footer .footer-desc { font-size: 0.9rem; opacity: 0.88; margin-bottom: 14px; line-height: 1.5; }
.theme-koyu-footer .footer-links { list-style: none; padding: 0; margin: 0; }
.theme-koyu-footer .footer-links li { margin-bottom: 8px; }
.theme-koyu-footer .footer-links a,
.theme-koyu-footer .footer-contact li {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.9rem;
}
.theme-koyu-footer .footer-links a:hover { color: var(--tk-accent); }
.theme-koyu-footer .footer-contact li { display: flex; align-items: center; gap: 8px; }
.theme-koyu-footer .social-links { display: flex; gap: 12px; margin-top: 12px; }
.theme-koyu-footer .social-links a { color: #94a3b8; font-size: 1.2rem; }
.theme-koyu-footer .social-links a:hover { color: var(--tk-accent); }
.theme-koyu-footer .footer-copy {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.85rem;
    opacity: 0.8;
    text-align: center;
}
.theme-koyu-footer .footer-copy-sep { margin: 0 0.35em; opacity: 0.7; }
.theme-koyu-footer .footer-veriasoft-link {
    color: var(--tk-accent);
    text-decoration: none;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}
.theme-koyu-footer .footer-veriasoft-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.15);
    text-decoration: none;
}

/* Breadcrumb */
body.theme-koyu .custom-breadcrumb { font-size: 0.9rem; margin-bottom: 16px; color: var(--tk-text-muted); }
body.theme-koyu .custom-breadcrumb a { color: var(--tk-accent); text-decoration: none; }
body.theme-koyu .custom-breadcrumb a:hover { text-decoration: underline; }
body.theme-koyu .custom-breadcrumb .separator { margin: 0 8px; opacity: 0.6; }
body.theme-koyu .custom-breadcrumb .current { font-weight: 600; color: var(--tk-text); }
body.theme-koyu .page-title-main { font-size: 1.5rem; font-weight: 700; color: var(--tk-text); }

/* Slider */
body.theme-koyu .slider-container { overflow: hidden; margin: 0 -4px; }
body.theme-koyu .product-slider {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding: 8px 0;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}
body.theme-koyu .product-slider .card { scroll-snap-align: start; flex-shrink: 0; }
body.theme-koyu .product-slider .product-card {
    width: 280px;
    min-width: 280px;
    max-width: 280px;
    display: flex;
    flex-direction: column;
}
body.theme-koyu .product-slider .product-card .card-image-wrapper {
    width: 100%;
    height: 0;
    padding-bottom: 100%;
    flex-shrink: 0;
    background: var(--tk-bg);
}
body.theme-koyu .product-slider .product-card .card-image {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}
body.theme-koyu .product-slider .product-card .card-content { flex-grow: 1; }
body.theme-koyu .slider-nav {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
    flex-wrap: nowrap;
}
body.theme-koyu .slider-nav .nav-btn { flex-shrink: 0; }
body.theme-koyu .nav-btn {
    width: 44px;
    height: 44px;
    border-radius: var(--tk-radius);
    border: 1px solid var(--tk-border);
    background: var(--tk-card);
    color: var(--tk-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: background 0.2s, border-color 0.2s, color 0.2s;
}
body.theme-koyu .nav-btn:hover {
    background: var(--tk-accent);
    border-color: var(--tk-accent);
    color: #fff;
}

/* WhatsApp bölümü */
body.theme-koyu .whatsapp-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    background: var(--tk-dark-soft);
    color: #e2e8f0;
    padding: 32px;
    border-radius: var(--tk-radius);
    margin-top: 48px;
}
body.theme-koyu .whatsapp-content h2 { font-size: 1.35rem; margin-bottom: 8px; color: #fff; }
body.theme-koyu .whatsapp-content p { color: #cbd5e1; margin-bottom: 16px; }
body.theme-koyu .btn-whatsapp { background: #25d366; color: #fff; padding: 12px 20px; border-radius: var(--tk-radius); font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
body.theme-koyu .btn-whatsapp:hover { color: #fff; opacity: 0.95; }
body.theme-koyu .btn-call { background: var(--tk-accent); color: #fff; padding: 12px 20px; border-radius: var(--tk-radius); font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 8px; }
body.theme-koyu .btn-call:hover { color: #fff; opacity: 0.95; }
body.theme-koyu .whatsapp-image { flex-shrink: 0; }
body.theme-koyu .whatsapp-image img { max-width: 160px; max-height: 160px; width: auto; height: auto; object-fit: contain; }
@media (max-width: 768px) {
    body.theme-koyu .whatsapp-section { flex-direction: column-reverse; text-align: center; }
    body.theme-koyu .whatsapp-image img { max-height: 140px; }
}

/* Ürün detay (TemaModern referansı – tüm bloklar) */
body.theme-koyu .product-detail-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    background: var(--tk-card);
    padding: 50px;
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow);
    margin-bottom: 60px;
    border: 1px solid var(--tk-border);
}
body.theme-koyu .product-gallery img {
    width: 100%;
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow);
    border: 1px solid var(--tk-border);
}
body.theme-koyu .product-info h1 {
    font-size: 1.5rem;
    color: var(--tk-accent);
    margin-bottom: 20px;
    line-height: 1.3;
}
body.theme-koyu .product-description { color: var(--tk-text-muted); margin-bottom: 30px; font-size: 1.1rem; }
body.theme-koyu .installation-prep {
    background: #fff7ed;
    border: 1px solid #fed7aa;
    border-radius: var(--tk-radius);
    padding: 20px;
    margin-bottom: 25px;
}
body.theme-koyu .installation-prep h3 {
    font-size: 1.1rem;
    color: var(--tk-accent);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    padding-bottom: 10px;
}
body.theme-koyu .prep-item:hover { border-color: var(--tk-accent); }
body.theme-koyu .prep-item i { color: var(--tk-dark); }
body.theme-koyu .prep-item.highlight {
    background: #fff7ed;
    border-color: #fed7aa;
    color: var(--tk-accent-hover);
}
body.theme-koyu .prep-note { border-left-color: var(--tk-accent); }
body.theme-koyu .prep-note i { color: var(--tk-accent); }
body.theme-koyu .theme-koyu-main .btn,
body.theme-koyu .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
}
body.theme-koyu .btn-primary {
    background: var(--tk-accent);
    color: #fff;
}
body.theme-koyu .btn-primary:hover { opacity: 0.9; transform: translateY(-2px); }
body.theme-koyu .btn-secondary {
    background: var(--tk-dark);
    color: #fff;
}
body.theme-koyu .btn-secondary:hover { opacity: 0.9; transform: translateY(-2px); }
body.theme-koyu .dimensions-title,
body.theme-koyu .video-section h2 { color: var(--tk-accent); }
body.theme-koyu .step-number {
    background: var(--tk-accent);
    color: #fff;
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
    line-height: 1;
    box-sizing: border-box;
}
body.theme-koyu .part-card:hover { border-color: var(--tk-accent); }

/* Ürün detay – specs, dimensions, package, hardware, parts */
body.theme-koyu .product-specs-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 40px;
}
body.theme-koyu .specs-top-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}
body.theme-koyu .dimensions-box {
    background: var(--tk-card);
    padding: 25px;
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow);
    border: 1px solid var(--tk-border);
}
body.theme-koyu .dimensions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    text-align: center;
}
body.theme-koyu .dim-item {
    background: var(--tk-bg);
    padding: 15px 10px;
    border-radius: 8px;
}
body.theme-koyu .dim-label { display: block; font-size: 0.9rem; color: var(--tk-text-muted); margin-bottom: 5px; }
body.theme-koyu .dim-value { display: block; font-size: 1.1rem; font-weight: 700; color: var(--tk-text); }
body.theme-koyu .package-list { list-style: none; padding: 0; margin: 0; }
body.theme-koyu .package-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--tk-card);
    border-bottom: 1px solid var(--tk-border);
    font-size: 0.95rem;
}
body.theme-koyu .package-item:last-child { border-bottom: none; }
body.theme-koyu .pkg-name { font-weight: 600; color: var(--tk-text); }
body.theme-koyu .pkg-dims {
    color: var(--tk-text-muted);
    background: var(--tk-bg);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85rem;
}
body.theme-koyu .hardware-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
}
body.theme-koyu .hardware-card {
    background: var(--tk-card);
    border: 1px solid var(--tk-border);
    border-radius: var(--tk-radius);
    padding: 15px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    min-height: 180px;
}
body.theme-koyu .hardware-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--tk-shadow-hover);
    border-color: var(--tk-accent);
}
body.theme-koyu .hardware-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 10px;
    border-radius: 8px;
    background: var(--tk-bg);
}
body.theme-koyu .hw-name { display: block; font-size: 1rem; color: var(--tk-text); font-weight: 600; margin-bottom: 5px; }
body.theme-koyu .hw-count { display: block; font-size: 0.8rem; color: var(--tk-text-muted); }
body.theme-koyu .parts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
}
body.theme-koyu .part-card {
    background: var(--tk-card);
    border: 1px solid var(--tk-border);
    border-radius: var(--tk-radius);
    padding: 15px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    min-height: 180px;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
body.theme-koyu .part-card img.hardware-img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    margin-bottom: 10px;
    border-radius: 8px;
    background: var(--tk-bg);
}
body.theme-koyu .part-card .hw-count {
    font-size: 0.8rem;
    color: var(--tk-text-muted);
    background: var(--tk-bg);
    padding: 4px 8px;
    border-radius: 4px;
    display: inline-block;
}
body.theme-koyu .video-section { margin-top: 50px; }
body.theme-koyu .video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--tk-radius);
    background: #000;
}
body.theme-koyu .video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
body.theme-koyu .steps-container { display: flex; flex-direction: column; gap: 30px; }
body.theme-koyu .step-card {
    background: var(--tk-card);
    border: 1px solid var(--tk-border);
    border-radius: var(--tk-radius);
    box-shadow: var(--tk-shadow);
    overflow: hidden;
}
body.theme-koyu .step-header {
    background: var(--tk-bg);
    padding: 15px 25px;
    border-bottom: 1px solid var(--tk-border);
    display: flex;
    align-items: center;
    gap: 15px;
}
body.theme-koyu .step-header h3 { margin: 0; font-size: 1.1rem; color: var(--tk-text); font-weight: 600; }
body.theme-koyu .step-body {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 0;
    align-items: center;
}
body.theme-koyu .step-image {
    background: var(--tk-card);
    border-right: 1px solid var(--tk-border);
    padding: 20px;
}
body.theme-koyu .step-image img { width: 100%; height: 250px; object-fit: contain; cursor: zoom-in; }
body.theme-koyu .step-info { padding: 25px; }
body.theme-koyu .step-description p { color: var(--tk-text-muted); line-height: 1.6; margin-bottom: 20px; font-size: 1.05rem; }
body.theme-koyu .step-meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: var(--tk-bg);
    padding: 15px;
    border-radius: 8px;
}
body.theme-koyu .meta-box { display: flex; flex-direction: column; gap: 5px; }
body.theme-koyu .meta-label { font-size: 0.85rem; color: var(--tk-text-muted); font-weight: 600; }
body.theme-koyu .meta-value { font-weight: 600; color: var(--tk-text); }
body.theme-koyu .mini-hardware-list { display: flex; flex-wrap: wrap; gap: 15px; margin-top: 5px; }
body.theme-koyu .mini-hw-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--tk-card);
    padding: 5px 10px;
    border-radius: 20px;
    border: 1px solid var(--tk-border);
    font-size: 0.85rem;
}
body.theme-koyu .mini-hw-item img { width: 20px; height: 20px; object-fit: contain; }
body.theme-koyu .btn-step-video {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--tk-card);
    color: #cc0000;
    border: 1px solid #cc0000;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 15px;
}
body.theme-koyu .btn-step-video:hover { background: #cc0000; color: #fff; }
body.theme-koyu .lightbox-modal {
    display: none;
    position: fixed;
    z-index: 99999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background: rgba(0,0,0,0.9);
    padding-top: 50px;
}
body.theme-koyu .lightbox-modal .lightbox-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 1000px;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 4px;
}
body.theme-koyu .close-lightbox {
    position: absolute;
    top: 25px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 100000;
}
body.theme-koyu .close-lightbox:hover { color: #bbb; }
body.theme-koyu .video-modal-content {
    margin: 8vh auto;
    width: 80%;
    max-width: 900px;
    background: #000;
    position: relative;
    aspect-ratio: 16 / 9;
    border-radius: var(--tk-radius);
    overflow: hidden;
}
body.theme-koyu .video-modal-content iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
/* --- Hırdavat modal (GarajHomeKurulum gibi: görsel + başlık + açıklama) --- */
body.theme-koyu .hw-modal-content {
    background: var(--tk-card);
    margin: 10vh auto;
    padding: 0;
    width: 60%;
    max-width: 700px;
    border-radius: var(--tk-radius);
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
body.theme-koyu .hw-modal-grid {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: 300px;
}
body.theme-koyu .hw-modal-image {
    background: var(--tk-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    border-right: 1px solid var(--tk-border);
}
body.theme-koyu .hw-modal-image img {
    width: 100%;
    max-height: 200px;
    object-fit: contain;
}
body.theme-koyu .hw-modal-info {
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
body.theme-koyu .hw-modal-info h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--tk-accent);
    border-bottom: 2px solid var(--tk-dark);
    display: inline-block;
    padding-bottom: 8px;
}
body.theme-koyu .hw-modal-info p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--tk-text);
}

/* --- Parça modal (3D/görsel + Parça Hakkında açıklama) --- */
body.theme-koyu .part-modal-content {
    background: var(--tk-card);
    margin: 5vh auto;
    padding: 0;
    width: 70%;
    max-width: 900px;
    border-radius: var(--tk-radius);
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}
body.theme-koyu .part-modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid var(--tk-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--tk-card);
}
body.theme-koyu .part-modal-header h3 {
    margin: 0;
    color: var(--tk-accent);
    font-size: 1.35rem;
}
body.theme-koyu .part-dims-badge {
    background: var(--tk-bg);
    color: var(--tk-text-muted);
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
}
body.theme-koyu .part-modal-body {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 0;
}
body.theme-koyu .model-nav-container {
    background: var(--tk-bg);
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--tk-border);
}
body.theme-koyu .part-details-text {
    padding: 30px;
    display: flex;
    flex-direction: column;
}
body.theme-koyu .part-details-text h4 {
    margin-bottom: 12px;
    color: var(--tk-text);
    font-size: 1.05rem;
    border-bottom: 2px solid var(--tk-accent);
    display: inline-block;
    padding-bottom: 5px;
    width: max-content;
}
body.theme-koyu .part-details-text p {
    color: var(--tk-text-muted);
    line-height: 1.6;
    margin-bottom: 24px;
    font-size: 1rem;
}
body.theme-koyu .model-viewer-tips {
    margin-top: auto;
    background: #fff7ed;
    padding: 15px;
    border-radius: 8px;
    font-size: 0.9rem;
    color: var(--tk-accent-hover);
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-weight: 500;
}
body.theme-koyu .model-viewer-tips i { margin-right: 8px; }

@media (max-width: 768px) {
    body.theme-koyu .hw-modal-content { width: 90%; margin: 15vh auto; }
    body.theme-koyu .hw-modal-grid { grid-template-columns: 1fr; }
    body.theme-koyu .hw-modal-image { padding: 20px; min-height: 200px; border-right: none; border-bottom: 1px solid var(--tk-border); }
    body.theme-koyu .hw-modal-image img { max-height: 150px; }
    body.theme-koyu .hw-modal-info { padding: 25px; }
}
@media (max-width: 992px) {
    body.theme-koyu .part-modal-content { width: 95%; margin: 10vh auto; }
    body.theme-koyu .part-modal-body { grid-template-columns: 1fr; }
    body.theme-koyu .model-nav-container { border-right: none; border-bottom: 1px solid var(--tk-border); padding: 15px; }
    body.theme-koyu .part-details-text { padding: 20px; }
}
body.theme-koyu .prep-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}
body.theme-koyu .prep-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--tk-card);
    padding: 15px 10px;
    border-radius: 10px;
    border: 1px solid var(--tk-border);
    font-size: 0.85rem;
    color: var(--tk-text-muted);
    font-weight: 600;
    text-align: center;
    transition: all 0.2s ease;
}
body.theme-koyu .action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    body.theme-koyu .product-detail-container {
        grid-template-columns: 1fr;
        padding: 20px;
    }
    body.theme-koyu .specs-top-row { grid-template-columns: 1fr; gap: 20px; }
    body.theme-koyu .step-body { grid-template-columns: 1fr !important; }
    body.theme-koyu .step-image { border-right: none; border-bottom: 1px solid var(--tk-border); }
    body.theme-koyu .step-image img { height: auto !important; max-height: 250px; }
    body.theme-koyu .step-meta-grid { grid-template-columns: 1fr; }
    body.theme-koyu .hardware-grid,
    body.theme-koyu .parts-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    body.theme-koyu .part-card,
    body.theme-koyu .hardware-card { padding: 10px; min-height: 160px; }
    body.theme-koyu .part-card img.hardware-img,
    body.theme-koyu .hardware-card .hardware-img { width: 60px; height: 60px; }
    body.theme-koyu .lightbox-modal .lightbox-content { width: 100%; }
    body.theme-koyu .video-modal-content { width: 95%; margin: 20vh auto; }
}

body.theme-koyu .whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    background: #25d366;
    color: #fff;
    padding: 12px 20px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(37,211,102,0.4);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
body.theme-koyu .whatsapp-float:hover { color: #fff; opacity: 0.95; }