/* ===== CSS Variables ===== */
:root {
    --color-primary: #54132b;
    --color-primary-dark: #3f0f21;
    --color-plum: #191875;
    --color-rose-pink: #c0b9fc;
    --color-pink: #e2f4da;
    --color-pink-light: #f7fcf4;
    --color-pink-btn: #c0b9fc;
    --color-pink-border: #d8d2ff;
    --color-accent-red: #54132b;
    --color-gray-dark: #2d2d2d;
    --color-gray: #6b6b6b;
    --color-gray-light: #9a9a9a;
    --color-white: #ffffff;
    --color-orange: #e8a54b;
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-cursive: 'Dancing Script', cursive;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

/* ===== Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-dark);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-white) !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.header .navbar {
    background: transparent !important;
}

.navbar {
    padding: 1rem 0 !important;
}

.navbar-brand {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--color-primary) !important;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin-right: 0.5rem;
}
.logo-dark {
    max-width: 240px;
}
.nav-link {
    font-weight: 400;
    color: var(--color-primary) !important;
    padding: 0.5rem 1rem !important;
}

.nav-link:hover {
    color: var(--color-plum) !important;
}

.nav-separator {
    width: 1px;
    min-height: 20px;
    padding: 0 !important;
    margin: 0 0.5rem;
    list-style: none;
    align-self: center;
}

.nav-separator::after {
    content: '';
    display: block;
    width: 1px;
    height: 18px;
    background: #ccc;
    margin: 0 auto;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn-patient-login {
    background: var(--color-white) !important;
    color: var(--color-primary) !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: 8px !important;
    font-weight: 600;
    border: 1px solid #e0e0e0 !important;
    transition: var(--transition);
}

.btn-patient-login:hover {
    background: #f8f8f8 !important;
    color: var(--color-plum) !important;
    border-color: #ccc !important;
}

.btn-header {
    background: var(--color-plum) !important;
    color: var(--color-white) !important;
    padding: 0.5rem 1.5rem !important;
    border-radius: 8px !important;
    font-weight: 600;
    border: none !important;
}

.btn-header:hover {
    background: #4f3259 !important;
    color: var(--color-white) !important;
}

/* ===== Hero Section ===== */
.hero-section {
    background: linear-gradient(135deg, #e2f4da 0%, #f3f1ff 100%);
    padding: 4rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: var(--color-pink);
    border-radius: 50%;
    opacity: 0.4;
    z-index: 0;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -80px;
    right: -80px;
    width: 300px;
    height: 300px;
    background: var(--color-pink);
    border-radius: 50%;
    opacity: 0.3;
    z-index: 0;
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.hero-label {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: #ffffffd9;
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3.25rem);
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.hero-title-accent {
    font-family: var(--font-heading);
    font-style: italic;
    font-weight: 600;
    color: var(--color-rose-pink);
}

.hero-desc {
    color: #6b6b6b;
    font-size: 1rem;
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-hero-primary {
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    border: none;
    transition: var(--transition);
}

.btn-hero-primary:hover {
    background: var(--color-plum) !important;
    color: var(--color-white) !important;
    transform: translateY(-2px);
}

.hero-image-wrapper {
    position: relative;
    padding: 0.5rem;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.hero-img {
    width: 100%;
    border-radius: calc(var(--radius-lg) - 4px);
    display: block;
}

/* ===== Section Common Styles ===== */
.section-title {
    font-family: var(--font-body);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--color-gray-dark);
    margin-bottom: 1rem;
}

.section-title-serif {
    font-family: var(--font-heading) !important;
    font-weight: 600;
}

.section-desc {
    color: var(--color-gray);
    font-size: 1rem;
    max-width: 600px;
}

.section-header.text-center .section-desc {
    margin: 0 auto;
}

/* ===== Services Section ===== */
.services-section {
    background: var(--color-white);
}

.service-card {
    background: var(--color-pink-light);
    padding: 2rem;
    border-radius: var(--radius-md);
    height: 100%;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
}

.service-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--color-pink);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.service-icon i {
    color: var(--color-accent-red);
    font-size: 1.25rem;
}

.service-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-dark);
    margin-bottom: 0.5rem;
}

.service-desc {
    color: var(--color-gray);
    font-size: 0.95rem;
    margin: 0 0 1rem;
}

.service-link {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

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

/* ===== Specialists Section ===== */
.specialists-section {
    background: #f8f7ff;
}

.specialist-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    height: 100%;
    transition: var(--transition);
}

.specialist-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.specialist-img-wrapper {
    width: 100%;
    max-width: 300px;
    margin: 0 auto 1.25rem;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.specialist-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    object-position: top;
    display: block;
    /* filter: grayscale(100%); */
}

.specialist-role {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-gray-light);
    text-transform: uppercase;
    text-align: center;
    letter-spacing: 0.08em;
    margin-bottom: 0.35rem;
}

.specialist-social {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.specialist-social a {
    width: 36px;
    height: 36px;
    background: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray);
    font-size: 0.85rem;
}

.specialist-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.specialist-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    text-align: center;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.specialist-bio {
    color: var(--color-gray);
    font-size: 0.9rem;
    text-align: center;
    line-height: 1.6;
    margin: 0 0 1.25rem;
}

/* ===== Insurance Section ===== */
.insurance-section {
    background: var(--color-white);
}

.insurance-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.insurance-list li {
    color: var(--color-gray);
    font-size: 0.95rem;
    padding: 0.25rem 0;
    border-bottom: none;
}

.insurance-placeholder {
    background: rgba(0, 0, 0, 0.03);
    border: 1px dashed #ddd;
    border-radius: var(--radius-sm);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 100px;
}

.insurance-placeholder i {
    color: var(--color-gray-light);
    font-size: 1.5rem;
    opacity: 0.5;
}

.insurance-placeholder span {
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

.insurance-note {
    color: var(--color-gray);
    font-size: 0.95rem;
    margin: 0;
}

/* ===== Testimonials Section ===== */
.testimonials-section {
    background: var(--color-plum);
    padding-top: 4rem !important;
    padding-bottom: 4rem !important;
}

.testimonials-section .section-header {
    margin-bottom: 3rem !important;
}

.testimonials-section .section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: #ffffff;
}

.testimonials-section .section-desc {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    line-height: 1.5;
}

.testimonial-card {
    background: #ffffff;
    padding: 1.75rem;
    border-radius: var(--radius-lg);
    height: 100%;
    min-height: 240px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.testimonial-card .stars {
    color: #f5c842;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.testimonial-card .stars i {
    margin-right: 3px;
}

.testimonial-text {
    color: #2d2d2d;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex-grow: 1;
    font-weight: 400;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: auto;
}

.testimonial-author .author-info {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.author-location {
    font-size: 0.8rem;
    color: var(--color-gray-light);
    font-weight: 400;
    margin-top: 0.15rem;
}

.author-avatar-wrapper {
    width: 52px;
    /* height: 32px; */
    border-radius: 9999px;
    overflow: hidden;
    flex-shrink: 0;
    background: rgba(77, 202, 223, 0.15);
}

.author-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.author-name {
    font-weight: 700;
    font-size: 1rem;
    color: #2d2d2d;
}

/* OWL Carousel Testimonials */
.testimonials-carousel .owl-dots {
    margin-top: 2rem;
}

.testimonials-carousel .owl-dot span {
    background: rgba(255, 255, 255, 0.5) !important;
    width: 10px;
    height: 10px;
    margin: 0 4px;
}

.testimonials-carousel .owl-dot.active span {
    background: var(--color-white) !important;
}

.testimonials-carousel .owl-nav button {
    color: var(--color-white) !important;
    font-size: 2rem !important;
}

/* ===== Patient Portal Section ===== */
.portal-section {
    background: var(--color-white);
}

.portal-image {
    position: relative;
}

.portal-logo-badge {
    margin-top: 1rem;
}

.healow-badge {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
}

.btn-portal {
    background: var(--color-orange) !important;
    color: var(--color-white) !important;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    transition: var(--transition);
}

.btn-portal:hover {
    background: #d8943a !important;
    color: var(--color-white) !important;
}

.portal-signin {
    color: var(--color-gray) !important;
    font-size: 0.95rem;
}

.portal-signin a {
    color: var(--color-primary);
}

.portal-signin a:hover {
    text-decoration: underline;
}

/* ===== healow Setup Section ===== */
.healow-setup-section {
    background: var(--color-white);
}

.setup-step {
    padding: 1rem;
}

.setup-icon {
    width: 64px;
    height: 64px;
    background: #d4e8f7;
    color: #2a7ab8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.setup-label {
    font-size: 0.85rem;
    font-weight: 700;
    color: #2a7ab8;
    margin-bottom: 0.5rem;
}

.setup-desc {
    font-size: 0.9rem;
    color: var(--color-gray);
    margin: 0;
}

.promo-code-row {
    display: flex;
    flex-wrap: wrap;
    max-width: 600px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.promo-code-box {
    flex: 1;
    min-width: 200px;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.promo-code-blue {
    background: #1e3a5f;
    color: var(--color-white);
    font-size: 0.95rem;
}

.promo-code-orange {
    background: #e8a54b;
    color: var(--color-white);
}

.promo-code-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.1em;
}

/* ===== Tools Section ===== */
.tools-section {
    background: var(--color-white);
}

.tools-tabs .nav-link {
    color: var(--color-gray) !important;
    border: none !important;
    padding: 0.75rem 1rem;
    font-weight: 500;
}

.tools-tabs .nav-link:hover {
    color: var(--color-primary) !important;
}

.tools-tabs .nav-tabs {
    border-bottom: 1px solid #dee2e6;
}

.tools-tabs .nav-link.active {
    color: var(--color-primary) !important;
    background: transparent !important;
    border: none !important;
    border-bottom: 2px solid var(--color-primary) !important;
    margin-bottom: -1px;
}

/* ===== Check-in / Kiosk ===== */
.checkin-image img,
.kiosk-image img,
.app-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--color-gray-dark);
}

.feature-list i {
    color: var(--color-primary);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.btn-schedule {
    background: var(--color-orange) !important;
    color: var(--color-white) !important;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-weight: 600;
    border: none;
    transition: var(--transition);
}

.btn-schedule:hover {
    background: #d8943a !important;
    color: var(--color-white) !important;
}

/* ===== App Section ===== */
.app-section {
    background: var(--color-white);
}

.app-instruction {
    color: var(--color-gray);
    font-size: 0.95rem;
}

.app-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-app-store,
.btn-google-play {
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: none;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

.btn-app-store:hover,
.btn-google-play:hover {
    background: var(--color-primary-dark) !important;
    color: var(--color-white) !important;
}

/* ===== Kiosk Section ===== */
.kiosk-section {
    background: var(--color-white);
}

/* ===== FAQ Section ===== */
.faq-section {
    background: var(--color-white);
}

.accordion-wrapper {
    max-width: 700px;
}

.accordion-item {
    border: none !important;
    border-bottom: 1px solid #eee !important;
    border-radius: 0 !important;
    margin-bottom: 0;
    overflow: hidden;
}

.accordion-item:last-child {
    border-bottom: none !important;
}

.accordion-button {
    font-weight: 600 !important;
    color: var(--color-gray-dark) !important;
    background: var(--color-white) !important;
    box-shadow: none !important;
    padding: 1rem 1.25rem;
}

.accordion-button:not(.collapsed) {
    border-bottom: 1px solid #eee;
}

.accordion-button::after {
    flex-shrink: 0;
}

.accordion-body {
    padding: 1rem 1.25rem;
    color: var(--color-gray);
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 4rem 2rem;
    /* background: #faf9f7; */
}

.cta-container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.cta-box {
    position: relative;
    background: #f3f1ff;
    padding: 4rem 3rem;
    border-radius: 28px;
    max-width: 720px;
    margin: 0 auto;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 320px;
    height: 320px;
    background: rgba(237, 227, 230, 0.6);
    border-radius: 50%;
    z-index: 0;
}

.cta-box::after {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 220px;
    height: 220px;
    background: rgba(237, 227, 230, 0.5);
    border-radius: 50%;
    z-index: 0;
}

.cta-box > * {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-family: var(--font-heading);
    font-size: clamp(1.875rem, 3.5vw, 2.5rem);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.cta-title-accent {
    color: var(--color-plum);
    font-style: italic;
}

.cta-desc {
    font-family: var(--font-body);
    color: #616161;
    margin-bottom: 2rem;
    font-size: 1rem;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.btn-cta-primary {
    font-family: var(--font-body);
    background: var(--color-primary) !important;
    color: var(--color-white) !important;
    padding: 0.75rem 1.75rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    border: none;
    box-shadow: 0 2px 10px rgba(84, 19, 43, 0.3);
    transition: var(--transition);
}

.btn-cta-primary:hover {
    background: var(--color-plum) !important;
    color: var(--color-white) !important;
}

.btn-cta-outline {
    font-family: var(--font-body);
    background: #fbfbfb !important;
    color: #5c3a5a !important;
    padding: 0.75rem 1.75rem;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    border: 1px solid #e5dfe4;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.btn-cta-outline:hover {
    background: #f5f0f2 !important;
    color: #4a2f48 !important;
    border-color: #d5cdd2 !important;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-white);
    border-top: 1px solid #eee;
}

.footer-brand {
    font-weight: 600;
    font-size: 1.5rem;
    color: var(--color-gray-dark);
}

.footer-desc {
    color: var(--color-gray);
    font-size: 0.95rem;
    max-width: 280px;
}

.social-icons {
    display: flex;
    gap: 0.75rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background: #f5f5f5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray);
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.footer-heading {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gray-dark);
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--color-gray);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.copyright {
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

.footer-legal a {
    color: var(--color-gray-light);
    font-size: 0.875rem;
}

.footer-legal a:hover {
    color: var(--color-primary);
}

/* ===== Responsive Styles ===== */
@media (max-width: 991px) {
    .navbar-collapse {
        padding: 1rem 0;
    }
    
    .navbar-nav {
        margin: 0 !important;
    }
    
    .nav-separator {
        display: none !important;
    }
    
    .nav-link {
        padding: 0.5rem 0 !important;
    }
    
    .header-actions {
        flex-direction: column;
        align-items: stretch;
        margin-top: 1rem;
        gap: 0.5rem;
    }
    
    .btn-header {
        margin-top: 0;
        display: block;
        text-align: center;
    }
    
    .hero-section {
        padding: 3rem 0 4rem;
    }
    
    .hero-image-wrapper {
        margin-top: 2rem;
    }
    
    .specialist-img-wrapper {
        max-width: 200px;
    }
    
    .cta-box {
        padding: 3rem 1.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .cta-section{
        padding: 2rem 0rem;
    }
}

@media (max-width: 767px) {
    .hero-subheadline {
        font-size: 0.875rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .tools-tabs .nav-link {
        font-size: 0.85rem;
        padding: 0.5rem 0.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-hero-primary {
        width: 100%;
        text-align: center;
    }
    
    .section-header {
        text-align: left !important;
    }
    
    .section-header.text-center .section-desc {
        margin: 0;
    }
    
    .app-buttons {
        flex-direction: column;
    }
    
    .btn-app-store,
    .btn-google-play {
        width: 100%;
        justify-content: center;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn-cta-primary,
    .btn-cta-outline {
        width: 100%;
    }
    
    .testimonial-card {
        min-height: auto;
    }
}

@media (max-width: 575px) {
    .insurance-placeholder {
        padding: 1.5rem;
        min-height: 80px;
    }
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(78, 59, 77, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.4s ease, visibility 0.4s ease, transform 0.4s ease,
                background 0.3s ease, box-shadow 0.3s ease;
    z-index: 999;
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 6px 24px rgba(78, 59, 77, 0.45);
}

.back-to-top:focus {
    outline: 2px solid var(--color-plum);
    outline-offset: 2px;
}

.back-to-top i {
    font-size: 1.1rem;
}