*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: background-color var(--transition), color var(--transition);
}

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

a {
    color: var(--link-color);
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}

a:hover {
    color: var(--link-hover);
}

a:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

h1, h2, h3 {
    font-family: var(--font-display);
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.container {
    width: var(--container);
    margin-inline: auto;
}

.section {
    padding: 5rem 0;
}

.section-alt {
    background: var(--bg-secondary);
}

.section-header {
    max-width: 640px;
    margin-bottom: 3rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin: 0 0 1rem;
}

.section-lead {
    color: var(--text-secondary);
    margin: 0;
    font-size: 1.05rem;
}

.eyebrow {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--eyebrow-color);
    margin: 0 0 0.75rem;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 9999;
    padding: 0.75rem 1rem;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.skip-link:focus {
    top: 1rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: var(--header-height);
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: inherit;
    text-decoration: none;
}

.brand-logo--theme-dark { display: var(--logo-theme); }
.brand-logo--theme-light { display: var(--logo-theme-alt); }

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 700;
}

.brand-tagline {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    background: none;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition);
}

.site-nav .nav-list {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.site-nav a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    color: var(--link-color);
}

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

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-strong);
    border-radius: 50%;
    background: var(--card-bg);
    cursor: pointer;
    color: var(--text-primary);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

[data-theme='light'] .icon-moon { display: block; }
[data-theme='light'] .icon-sun { display: none; }
[data-theme='dark'] .icon-moon { display: none; }
[data-theme='dark'] .icon-sun { display: block; }

/* Hero */
.hero {
    position: relative;
    overflow: hidden;
    padding-top: 3rem;
    padding-bottom: 4rem;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--hero-gradient);
    z-index: 0;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    margin: 0 0 1rem;
}

.hero-lead {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 0 1.5rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.hero-stats strong {
    display: block;
    color: var(--eyebrow-color);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-visual {
    position: relative;
    max-width: 400px;
    margin-inline: auto;
}

.hero-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    object-fit: cover;
    width: 100%;
    aspect-ratio: 433 / 800;
}

.hero-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 60%;
    height: 40%;
    background: linear-gradient(135deg, var(--color-gold) 0%, transparent 70%);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.4;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 480px;
    margin-inline: auto;
}

.conditions-title {
    font-size: 1rem;
    margin: 2rem 0 1rem;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.tag-list li {
    padding: 0.4rem 0.85rem;
    background: var(--card-bg);
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    font-size: 0.85rem;
}

/* Credentials */
.credentials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

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

.credentials-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
}

.credentials-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.credentials-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 360px;
    margin-inline: auto;
}

.credentials-marquee {
    margin-top: 3rem;
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.marquee-track {
    display: flex;
    gap: 2rem;
    width: max-content;
    animation: marquee 40s linear infinite;
}

.marquee-item {
    white-space: nowrap;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* Regenerative */
.regenerative-intro {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
    align-items: center;
}

.regenerative-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 420px;
    margin-inline: auto;
}

/* Process */
.process-timeline {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.process-step {
    position: relative;
    padding: 1.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--accent);
}

.process-number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--accent);
    opacity: 0.6;
}

.process-step h3 {
    margin: 0.5rem 0;
    font-size: 1.1rem;
}

.process-step p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Treatments gallery */
.treatments-gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2.5rem;
}

.gallery-image {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    width: 100%;
    object-fit: cover;
    aspect-ratio: 3 / 4;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.contact-details {
    list-style: none;
    margin: 2rem 0;
    padding: 0;
}

.contact-details li {
    margin-bottom: 1rem;
}

.contact-details strong {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--eyebrow-color);
    margin-bottom: 0.25rem;
}

.contact-portrait {
    max-width: 200px;
}

.contact-image {
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
}

/* Footer */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-heading {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--eyebrow-color);
    margin: 0 0 1rem;
}

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

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

.footer-grid a {
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-grid a:hover,
.footer-grid a:focus-visible {
    color: var(--link-color);
}

.footer-name {
    font-family: var(--font-display);
    margin: 0.75rem 0 0.25rem;
}

.footer-rqe {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin: 0;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.social-link:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

.social-link--instagram {
    color: #e1306c;
    background: rgba(225, 48, 108, 0.1);
}

.social-link--instagram:hover,
.social-link--instagram:focus-visible {
    background: var(--social-instagram);
    border-color: transparent;
    color: var(--color-white);
}

.social-link--threads {
    color: var(--social-threads);
    background: color-mix(in srgb, var(--social-threads) 12%, transparent);
}

.social-link--threads:hover,
.social-link--threads:focus-visible {
    background: var(--social-threads);
    border-color: var(--social-threads);
    color: var(--bg-primary);
}

.social-link--whatsapp {
    color: var(--social-whatsapp);
    background: rgba(37, 211, 102, 0.12);
}

.social-link--whatsapp:hover,
.social-link--whatsapp:focus-visible {
    background: var(--social-whatsapp);
    border-color: var(--social-whatsapp);
    color: var(--color-white);
}

.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-legal {
    max-width: 560px;
    margin: 0 auto 0.5rem;
}

.link-button {
    background: none;
    border: none;
    padding: 0;
    color: var(--link-color);
    text-decoration: underline;
    cursor: pointer;
    font: inherit;
}

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

.link-button:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: 3px;
}

/* WhatsApp float */
.whatsapp-float {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--social-whatsapp);
    color: var(--color-white);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition);
    text-decoration: none;
}

.whatsapp-float:hover {
    color: var(--color-white);
}

/* Reveal animations — see animations.css */

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

/* Responsive */
@media (min-width: 768px) {
    .hero-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }

    .hero-visual {
        margin-inline: 0;
        justify-self: end;
    }

    .about-grid {
        grid-template-columns: 0.9fr 1.1fr;
    }

    .regenerative-intro {
        grid-template-columns: 1.2fr 0.8fr;
    }

    .credentials-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }

    .contact-grid {
        grid-template-columns: 1fr 1.2fr;
    }

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
    }

    .treatments-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .process-timeline {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 900px) {
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--header-bg);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition), opacity var(--transition);
    }

    .site-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .site-nav .nav-list {
        flex-direction: column;
        gap: 0.75rem;
    }

    .brand-tagline {
        display: none;
    }
}