/* ============================================
   ALIMENTOS SAYSA — LANDING PAGE
   ============================================ */

/* ---------- VARIABLES ---------- */
:root {
    --red: #C41E3A;
    --red-dark: #A01830;
    --red-light: #E8364F;
    --black: #1A1A1A;
    --dark: #111111;
    --gray-900: #1f1f1f;
    --gray-800: #2a2a2a;
    --gray-700: #333333;
    --gray-600: #555555;
    --gray-500: #777777;
    --gray-400: #999999;
    --gray-300: #cccccc;
    --gray-200: #e5e5e5;
    --gray-100: #f5f5f5;
    --white: #ffffff;
    --font-body: 'Inter', sans-serif;
    --font-heading: 'Playfair Display', serif;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
    --shadow-xl: 0 30px 80px rgba(0,0,0,0.2);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: 0.25s ease;
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: var(--font-body);
    color: var(--black);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* ---------- UTILITIES ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--red);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--black);
    line-height: 1.2;
    margin-bottom: 20px;
}
.section-desc {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}
.section-header { text-align: center; margin-bottom: 60px; }

/* ---------- BUTTONS ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary {
    background: var(--red);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(196, 30, 58, 0.3);
}
.btn-primary:hover {
    background: var(--red-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(196, 30, 58, 0.4);
}
.btn-outline {
    border: 2px solid var(--white);
    color: var(--white);
    background: transparent;
}
.btn-outline:hover {
    background: var(--white);
    color: var(--black);
    transform: translateY(-2px);
}
.btn-whatsapp {
    background: #25D366;
    color: var(--white);
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp:hover {
    background: #1ebe57;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.4);
}
.btn-lg { padding: 18px 40px; font-size: 1.05rem; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- PRELOADER ---------- */
.preloader {
    position: fixed;
    inset: 0;
    background: var(--dark);
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}
.preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader-inner { text-align: center; }
.preloader-food {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
}
.preloader-food i {
    font-size: 2rem;
    color: var(--red);
    animation: preloaderBounce 1.4s ease-in-out infinite;
}
.preloader-food i:nth-child(2) { animation-delay: 0.2s; }
.preloader-food i:nth-child(3) { animation-delay: 0.4s; }
.preloader-food i:nth-child(4) { animation-delay: 0.6s; }
.preloader-text {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 8px;
}
@keyframes preloaderBounce {
    0%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-15px); }
}

/* ---------- NAVBAR ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 10px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}
.nav-logo-img {
    height: 40px;
    width: auto;
    display: block;
    transition: var(--transition);
    filter: brightness(0) invert(1);
}
.navbar.scrolled .nav-logo-img {
    height: 35px;
}
.logo-icon {
    width: 42px;
    height: 42px;
    background: var(--red);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.1rem;
}
.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
}
.nav-menu {
    display: flex;
    gap: 8px;
}
.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.8);
    border-radius: 50px;
    transition: var(--transition-fast);
}
.nav-link:hover, .nav-link.active {
    color: var(--white);
    background: rgba(255,255,255,0.1);
}
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--red);
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
}
.nav-cta:hover {
    background: var(--red-dark);
    transform: translateY(-2px);
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
    padding: 4px;
}
.toggle-bar {
    width: 26px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}
.nav-toggle.active .toggle-bar:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active .toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.active .toggle-bar:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
.mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.mobile-overlay.active { opacity: 1; visibility: visible; }

/* ---------- HERO ---------- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.hero-slider {
    position: absolute;
    inset: 0;
    z-index: 0;
}
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide-bg {
    position: absolute;
    inset: -60px;
    background-size: cover;
    background-position: center;
    will-change: transform;
}
.hero-slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.4) 50%, rgba(196,30,58,0.2) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}
.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(196, 30, 58, 0.2);
    border: 1px solid rgba(196, 30, 58, 0.4);
    border-radius: 50px;
    color: var(--white);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 24px;
    backdrop-filter: blur(10px);
}
.hero-title {
    font-family: var(--font-heading);
    color: var(--white);
    margin-bottom: 20px;
}
.hero-title-line {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
}
.hero-title-accent {
    display: block;
    font-size: clamp(3.5rem, 8vw, 6rem);
    font-weight: 700;
    color: var(--red);
    line-height: 1;
}
.hero-desc {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.85);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.hero-slider-nav {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}
.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    border: 2px solid rgba(255,255,255,0.5);
    transition: var(--transition);
    cursor: pointer;
}
.slider-dot.active {
    background: var(--red);
    border-color: var(--red);
    transform: scale(1.2);
}
.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 3;
    color: rgba(255,255,255,0.6);
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.6), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
    0%, 100% { opacity: 0.4; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ---------- ABOUT ---------- */
.section-about { background: var(--gray-100); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}
.about-img-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-img-wrapper img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.about-img-wrapper:hover img { transform: scale(1.05); }
.about-badge {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: var(--red);
    color: var(--white);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}
.badge-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
}
.badge-text {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.about-accent {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 200px;
    height: 200px;
    border: 3px solid var(--red);
    border-radius: var(--radius-lg);
    opacity: 0.2;
    z-index: -1;
}
.about-content .section-title { text-align: left; }
.about-lead {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 16px;
}
.about-content p {
    color: var(--gray-600);
    margin-bottom: 12px;
}
.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 32px;
}
.about-feature {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.feature-icon {
    width: 48px;
    height: 48px;
    background: rgba(196, 30, 58, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--red);
    font-size: 1.1rem;
    flex-shrink: 0;
}
.about-feature h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 2px;
}
.about-feature p {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin: 0;
}

/* ---------- PRODUCTS ---------- */
.section-products { background: var(--white); }
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.product-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--red);
}
.product-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--white);
    font-size: 1.5rem;
    transition: var(--transition);
}
.product-card:hover .product-icon {
    transform: scale(1.1) rotate(5deg);
}
.product-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 10px;
}
.product-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}
.product-line {
    width: 40px;
    height: 3px;
    background: var(--red);
    margin: 20px auto 0;
    border-radius: 2px;
    transition: var(--transition);
}
.product-card:hover .product-line { width: 60px; }

/* ---------- CATALOG CTA ---------- */
.section-catalog {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}
.catalog-parallax {
    position: absolute;
    inset: -60px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    will-change: transform;
}
.catalog-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(196,30,58,0.9) 0%, rgba(26,26,26,0.85) 100%);
}
.catalog-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
}
.catalog-content h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 16px;
}
.catalog-content p {
    font-size: 1.15rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 32px;
}
.catalog-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.catalog-actions .btn-outline {
    border-color: var(--white);
    color: var(--white);
}
.catalog-actions .btn-outline:hover {
    background: var(--white);
    color: var(--black);
}

/* ---------- BENEFITS ---------- */
.section-benefits { background: var(--gray-100); }
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.benefit-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid transparent;
}
.benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--red);
}
.benefit-number {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--gray-100);
    line-height: 1;
    transition: var(--transition);
}
.benefit-card:hover .benefit-number { color: rgba(196,30,58,0.1); }
.benefit-icon {
    width: 60px;
    height: 60px;
    background: rgba(196, 30, 58, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--red);
    font-size: 1.3rem;
    margin-bottom: 20px;
    transition: var(--transition);
}
.benefit-card:hover .benefit-icon {
    background: var(--red);
    color: var(--white);
}
.benefit-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 10px;
}
.benefit-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ---------- CLIENTS ---------- */
.section-clients { background: var(--white); }
.clients-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.client-card {
    background: var(--gray-100);
    border-radius: var(--radius-md);
    padding: 32px 20px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}
.client-card:hover {
    background: var(--white);
    border-color: var(--red);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.client-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    color: var(--white);
    font-size: 1.3rem;
    transition: var(--transition);
}
.client-card:hover .client-icon { transform: scale(1.1); }
.client-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--black);
}

/* ---------- CONTACT ---------- */
.section-contact { background: var(--gray-100); }
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}
.contact-info .section-title { text-align: left; }
.contact-info > p {
    color: var(--gray-600);
    margin-bottom: 32px;
}
.contact-details { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(196, 30, 58, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--red);
    font-size: 1rem;
    flex-shrink: 0;
}
.contact-item h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 2px;
}
.contact-item p {
    font-size: 0.9rem;
    color: var(--gray-500);
}
.contact-socials { display: flex; gap: 12px; }
.contact-socials a {
    width: 44px;
    height: 44px;
    background: var(--gray-200);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: var(--transition);
}
.contact-socials a:hover {
    background: var(--red);
    color: var(--white);
    transform: translateY(-3px);
}
.contact-form-wrapper {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}
.contact-form h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.contact-form h3 i { color: var(--red); }
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}
.form-group label i { color: var(--red); margin-right: 4px; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--black);
    transition: var(--transition-fast);
    background: var(--gray-100);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--red);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(196, 30, 58, 0.1);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-success {
    display: none;
    margin-top: 16px;
    padding: 14px;
    background: #d4edda;
    color: #155724;
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
}
.form-success.show { display: block; }

/* ---------- FOOTER ---------- */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.7);
    padding: 80px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.footer-logo-img {
    height: 45px;
    width: auto;
    display: block;
    filter: brightness(0) invert(1);
}
.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}
.footer-socials { display: flex; gap: 10px; }
.footer-socials a {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.footer-socials a:hover {
    background: var(--red);
    color: var(--white);
    transform: translateY(-3px);
}
.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col li {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-col a:hover { color: var(--red); }
.footer-col a i { width: 16px; color: var(--red); }
.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ---------- WHATSAPP FLOAT ---------- */
.whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 60px;
    height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.6rem;
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.4);
    z-index: 998;
    transition: var(--transition);
    animation: whatsappPulse 2s ease-in-out infinite;
}
.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 40px rgba(37, 211, 102, 0.5);
}
.whatsapp-tooltip {
    position: absolute;
    right: 72px;
    background: var(--white);
    color: var(--black);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--white);
}
.whatsapp-float:hover .whatsapp-tooltip { opacity: 1; visibility: visible; }
@keyframes whatsappPulse {
    0%, 100% { box-shadow: 0 6px 30px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 6px 40px rgba(37, 211, 102, 0.6); }
}

/* ---------- BACK TO TOP ---------- */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 28px;
    width: 46px;
    height: 46px;
    background: var(--black);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    z-index: 997;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--red); transform: translateY(-3px); }

/* ---------- REVEAL ANIMATIONS ---------- */
.reveal-up, .reveal-left, .reveal-right {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal-up { transform: translateY(40px); }
.reveal-left { transform: translateX(-40px); }
.reveal-right { transform: translateX(40px); }
.reveal-up.revealed, .reveal-left.revealed, .reveal-right.revealed {
    opacity: 1;
    transform: translate(0, 0);
}

/* ---------- RESPONSIVE TABLET ---------- */
@media (max-width: 1024px) {
    .about-grid { gap: 50px; }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .clients-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

/* ---------- RESPONSIVE MOBILE ---------- */
@media (max-width: 768px) {
    .section { padding: 70px 0; }

    /* Nav */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--dark);
        flex-direction: column;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: var(--transition);
        z-index: 1000;
        box-shadow: -10px 0 40px rgba(0,0,0,0.3);
    }
    .nav-menu.active { right: 0; }
    .nav-link {
        padding: 12px 16px;
        font-size: 1rem;
        border-radius: var(--radius-sm);
    }
    .nav-cta { display: none; }
    .nav-toggle { display: flex; }
    .nav-logo-img { height: 36px; }

    /* Hero */
    .hero { min-height: 600px; }
    .hero-title-line { font-size: 2.2rem; }
    .hero-title-accent { font-size: 3rem; }
    .hero-desc { font-size: 1rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .hero-actions .btn { width: 100%; max-width: 280px; justify-content: center; }
    .hero-slider-nav { bottom: 80px; }

    /* About */
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-img-wrapper img { height: 350px; }
    .about-content .section-title { text-align: center; }
    .about-lead, .about-content p { text-align: center; }
    .about-features { grid-template-columns: 1fr; }

    /* Products */
    .products-grid { grid-template-columns: 1fr; gap: 20px; }

    /* Catalog */
    .catalog-parallax { background-attachment: scroll; }

    /* Benefits */
    .benefits-grid { grid-template-columns: 1fr; gap: 20px; }

    /* Clients */
    .clients-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

    /* Contact */
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-info .section-title { text-align: center; }
    .contact-info > p { text-align: center; }
    .contact-details { align-items: center; }
    .contact-socials { justify-content: center; }

    /* Footer */
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-brand { display: flex; flex-direction: column; align-items: center; }
    .footer-socials { justify-content: center; }
    .footer-col ul { align-items: center; }

    /* WhatsApp */
    .whatsapp-float { width: 52px; height: 52px; font-size: 1.4rem; bottom: 20px; right: 20px; }
    .back-to-top { bottom: 84px; right: 20px; width: 40px; height: 40px; }
}

/* ---------- RESPONSIVE SMALL MOBILE ---------- */
@media (max-width: 480px) {
    .nav-logo-img { height: 36px; }
    .hero { min-height: 550px; }
    .hero-title-line { font-size: 1.8rem; }
    .hero-title-accent { font-size: 2.5rem; }
    .section-title { font-size: 1.8rem; }
    .contact-form-wrapper { padding: 24px; }
    .clients-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .client-card { padding: 20px 14px; }
    .client-icon { width: 48px; height: 48px; font-size: 1.1rem; }
    .footer-logo-img { height: 40px; }
}