:root {
    /* --- Color Palette (Consistent with Website SEO) --- */
    --primary: #6487AF;
    --primary-dark: #3A5778;
    --primary-light: #E6EFF9;
    --accent: #AABEDC;
    --text-main: #333333;
    --text-sub: #666666;
    --bg-body: #FFFFFF;
    --bg-neutral: #F5F5F5;
    --border-color: #E6E6E6;

    /* --- Design Variables --- */
    --shadow-hover: 0 12px 24px rgba(58, 87, 120, 0.15);
    --radius-pill: 999px;
    --radius-card: 12px;
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'IBM Plex Sans', sans-serif;

    /* --- Header Heights for offset --- */
    --header-height: 80px;
}

/* ================= BASE STYLES ================= */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-body);
    color: var(--text-main);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    font-weight: 300;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-serif);
    font-weight: 600;
}

a {
    text-decoration: none;
    transition: color 0.2s;
}

/* ================= UTILITIES ================= */
.text-serif {
    font-family: var(--font-serif);
}

.text-primary {
    color: var(--primary) !important;
}

/* ================= HEADER (Replicated from Reference) ================= */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 40px;
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary-dark);
    font-family: var(--font-serif);
}

.nav-menu {
    display: flex;
    gap: 30px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: #888;
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link:hover {
    color: var(--primary);
}

.header-actions {
    display: flex;
    gap: 12px;
}

.btn-header-fill {
    background: var(--primary);
    color: white;
    padding: 8px 20px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
}

/* ================= HERO & FILTERS ================= */
.collection-header {
    text-align: center;
    padding: 60px 20px 40px;
    background: #fff;
}

.collection-header h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
    color: #000;
}

.collection-header p {
    color: var(--text-sub);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

/* Filters Row */
.filters-container {
    padding: 20px 0;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
    margin-bottom: 20px;
}
#PList b, #PList strong {
    font-weight: 600;
}
.filter-group {
    display: flex;
    align-items: center;
    gap: 15px;
}

.filter-label {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.1rem;
    color: #888;
    margin-right: 5px;
}

.filter-value {
    font-family: var(--font-serif);
    font-weight: 600;
    font-size: 1.1rem;
    color: #000;
}

.filter-options {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* New Filter Structure */
.filter-option {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 1px solid #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    padding: 2px;
    /* Spacing for the ring */
}

/* Active State - Blue Ring */
.filter-option.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
    /* Simulate thicker border/ring */
}

.filter-option:hover {
    border-color: #ccc;
}

.filter-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.filter-option.active .filter-img {
    opacity: 1;
}

.color-circle {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    display: block;
}

.search-bar {
    background: #F0F0F0;
    border-radius: 20px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    width: 300px;
}

.search-bar input {
    border: none;
    background: transparent;
    width: 100%;
    outline: none;
    font-size: 0.9rem;
    color: #555;
}

/* ================= PRODUCT GRID ================= */
.product-card {
    background: #fff;
    border: none;
    transition: transform 0.3s;
    position: relative;
    padding-bottom: 15px;
}

.product-image-wrapper {
    background: #F9F9F9;
    position: relative;
    margin-bottom: 15px;
    /* Aspect ratio square */
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.3s, opacity 0.3s ease;
}

.product-img.hover-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    z-index: 2;
}

.product-card:hover .product-img {
    transform: scale(1.05);
}

.product-card:hover .product-img.hover-img {
    opacity: 1;
}

.badge-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #fff;
    color: #333;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.btn-wishlist {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 10;
    padding: 0;
    transition: transform 0.2s;
}

.btn-wishlist svg {
    width: 24px;
    height: 24px;
    stroke: #333;
    stroke-width: 2;
    transition: all 0.3s ease;
}

.btn-wishlist:hover {
    transform: scale(1.1);
}

.btn-wishlist:hover svg {
    stroke: #E63946;
    /* Red hover */
}

.btn-wishlist.active svg {
    fill: #E63946;
    stroke: #E63946;
}

.product-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: #111;
}

.product-price {
    font-size: 0.9rem;
    color: #666;
}

/* ================= LOOSE DIAMONDS SECTION ================= */
.loose-diamonds-section {
    position: relative;
    overflow: hidden;
    margin: 80px 0;
}

.loose-diamonds-bg {
    /* Placeholder for the background image from screenshot 2 */
    background: #f4f4f4;
    min-height: 500px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
}

.diamonds-content-card {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 12px;
    max-width: 500px;
    margin-left: 10%;
    backdrop-filter: blur(5px);
}

.diamonds-content-card h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    line-height: 1.2;
}

.diamonds-content-card p {
    color: var(--text-sub);
    margin-bottom: 25px;
}

/* ================= CTA SECTION ================= */
.cta-section {
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.45) 0%, rgba(0, 0, 0, 0.35) 45%, rgba(0, 0, 0, 0.15) 70%, rgba(0, 0, 0, 0.05) 100%), url('https://stargems.com/assets/img/guidelines/grow-your-jewelry-business-with-stargems.webp');
    inset: 0;
    position: relative;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    color: white;
    padding: 100px 0;
    text-align: left;
}

.cta-section h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-family: var(--font-serif);
    max-width: 600px;
}

.cta-section p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 0 40px 0;
    opacity: 0.9;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    justify-content: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-cta {
    background: #3A7CA5;
    border: none;
    color: white;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-cta:hover {
    background: #5aa1cc;
    color: white;
}

.btn-cta-blue {
    background: #3A7CA5;
    /* Lighter blue for 'Book a Demo' */
    border: none;
}

.btn-cta-blue:hover {
    background: #5aa1cc;
}

.btn-promo {
    background: #3A5778;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s;
    cursor: pointer;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-promo:hover {
    background: #4a6b91;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

/* ================= FAQ SECTION (Quick Answers) ================= */
.quick-answers-section {
    padding: 80px 0;
    background: #fff;
}

.quick-answers-box {
    border: 1px solid #eee;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    /* Subtle shadow like screenshot */
}

.quick-answers-header {
    font-family: var(--font-serif);
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: #111;
}

.faq-card {
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    transition: box-shadow 0.3s;
    cursor: pointer;
    /* Interaction hint */
}

.faq-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.faq-card:last-child {
    margin-bottom: 0;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.15rem;
    margin-bottom: 0;
    color: #111;
    font-family: var(--font-sans);
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-card.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer-container {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.4s ease;
    opacity: 0;
}

.faq-card.active .faq-answer-container {
    max-height: 300px;
    /* Adjust if content is longer */
    opacity: 1;
    margin-top: 15px;
    /* Spacing handled here */
}

.faq-answer {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

.faq-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: #666;
    font-size: 0.85rem;
    text-decoration: underline;
    margin-top: 12px;
}

/* ================= REVIEWS SECTION ================= */
.reviews-section {
    padding: 80px 0;
    background: #FAFAFA;
}

.review-card {
    background: white;
    padding: 40px;
    border: 1px solid #eee;
    border-radius: 12px;
    height: 100%;
}

.review-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #333;
    margin-bottom: 20px;
    font-family: var(--font-sans);
    font-weight: 400;
}

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviewer-img {
    width: 50px !important;
    height: 50px !important;
    min-width: 50px !important;
    /* Ensure it stays round */
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    /* Prevent shrinking */
}

@media (max-width: 768px) {
    .review-card {
        padding: 25px;
        /* Reduce padding on mobile */
    }
}

/* Reviews Section - Desktop Masonry */
@media (min-width: 992px) {
    .reviews-carousel {
        column-count: 3;
        column-gap: 20px;
        display: block !important;
        /* Override owl-carousel default if needed */
    }

    .reviews-carousel .review-card {
        display: inline-block;
        width: 100%;
        margin-bottom: 20px;
        break-inside: avoid;
    }

    /* Hide owl styling if accidentally applied */
    .reviews-carousel.owl-carousel {
        display: block;
    }
}

/* Responsive CTA Section for Mobile/Tablet */
@media (max-width: 991px) {
    .cta-section {
        background: none !important;
        padding: 0;
        display: flex;
        flex-direction: column;
    }

    .cta-section::before {
        content: "";
        display: block;
        width: 100%;
        height: 300px;
        background: url('https://stargems.com/assets/img/guidelines/grow-your-jewelry-business-with-stargems-mob.webp') no-repeat center center;
        background-size: cover;
    }

    .cta-section .container {
        background-color: #3A7CA5;
        width: 100%;
        max-width: 100%;
        padding: 50px 20px;
        text-align: center !important;
    }

    .cta-section h2,
    .cta-section p {
        margin-left: auto;
        margin-right: auto;
        text-align: center;
    }

    .cta-buttons {
        justify-content: center;
    }

    .btn-cta {
        background: transparent;
        border: 1px solid white;
    }

    /* Reviews Mobile Layout: Info above Text */
    .review-card {
        display: flex;
        flex-direction: column-reverse;
        gap: 15px;
        padding: 25px;
        /* Ensure padding override is here */
        height: auto;
        /* Allow height to adjust */
    }

    .review-text {
        margin-bottom: 0;
    }

    .reviewer-info {
        justify-content: center;
        /* Center align the info if needed, though card text is left aligned usually */
    }
}

/* ================= RESPONSIVE ================= */
@media (max-width: 991px) {
    .collection-header h1 {
        font-size: 2.5rem;
    }

    .filters-container .row>div {
        margin-bottom: 20px;
        justify-content: center;
    }

    .filter-group {
        justify-content: center;
    }

    .diamonds-content-card {
        margin: 0 auto;
        max-width: 90%;
    }

    .site-header {
        padding: 15px 20px;
    }

    .nav-menu {
        display: none;
        /* Hide for mobile initially or implement hamburger */
    }

    .faq-card {
        margin-bottom: 15px;
        /* Reduced from 24px */
    }
}


@media (max-width: 768px) {
    .collection-header h1 {
        font-size: 2rem;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

    .feature-grid .col-md-6 {
        margin-bottom: 20px;
    }
}

@media (min-width: 1600px) {
    .container {
        max-width: 1520px;
    }
}