/* ===== Variables ===== */
:root {
    --green-50: #f0fdf4;
    --green-100: #dcfce7;
    --green-200: #bbf7d0;
    --green-400: #4ade80;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --green-700: #15803d;
    --green-800: #166534;
    --green-900: #14532d;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(255,255,255,0.95);
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--gray-900);
}

.logo-icon {
    color: var(--green-600);
}

.dot {
    color: var(--green-500);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-links a {
    padding: 8px 14px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: 8px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--gray-900);
    background: var(--gray-100);
}

.nav-cta {
    background: var(--green-600) !important;
    color: var(--white) !important;
    font-weight: 600 !important;
}

.nav-cta:hover {
    background: var(--green-700) !important;
    color: var(--white) !important;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 72px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--green-50) 0%, var(--white) 50%, var(--green-100) 100%);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 700px;
    height: 700px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--green-200) 0%, transparent 70%);
    opacity: 0.5;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 24px;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--green-100);
    color: var(--green-700);
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 100px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.hero-content h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.15;
    color: var(--gray-900);
    margin-bottom: 24px;
}

.hero-content h1 em {
    font-style: normal;
    color: var(--green-600);
}

.hero-sub {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 520px;
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-card {
    width: 100%;
    max-width: 420px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-illustration svg {
    width: 100%;
    height: auto;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll a {
    color: var(--gray-400);
    transition: var(--transition);
}

.hero-scroll a:hover {
    color: var(--green-600);
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--green-600);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(22, 163, 74, 0.3);
}

.btn-primary:hover {
    background: var(--green-700);
    box-shadow: 0 6px 20px rgba(22, 163, 74, 0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background: var(--white);
    color: var(--gray-700);
    border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--green-500);
    color: var(--green-700);
    background: var(--green-50);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--gray-50);
}

.section-dark {
    background: var(--gray-900);
    color: var(--white);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
}

.section-label {
    display: inline-block;
    padding: 4px 14px;
    background: var(--green-100);
    color: var(--green-700);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-dark .section-label {
    background: rgba(74, 222, 128, 0.15);
    color: var(--green-400);
}

.section-header h2 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-header h2 em {
    font-style: normal;
    color: var(--green-600);
}

.section-dark .section-header h2 em {
    color: var(--green-400);
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--gray-500);
    line-height: 1.7;
}

.section-dark .section-desc {
    color: var(--gray-400);
}

.section-header.light h2 {
    color: var(--white);
}

/* ===== Features (Nosotros) ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--green-200);
    transform: translateY(-4px);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-100);
    color: var(--green-700);
    border-radius: 14px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== Steps (Acuaponía) ===== */
.steps {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 16px;
}

.step {
    flex: 1;
    max-width: 320px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    position: relative;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.step.visible {
    opacity: 1;
    transform: translateY(0);
}

.step:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--green-300);
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--green-100);
    line-height: 1;
    margin-bottom: 16px;
}

.step-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: var(--green-50);
    color: var(--green-600);
    border-radius: 50%;
}

.step h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.step p {
    font-size: 0.9375rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.step-connector {
    display: flex;
    align-items: center;
    color: var(--green-400);
    flex-shrink: 0;
}

/* ===== Benefits ===== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.benefit-item {
    text-align: center;
    padding: 40px 24px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.benefit-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.benefit-item:hover {
    box-shadow: var(--shadow);
    border-color: var(--green-200);
}

.benefit-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--green-600);
    line-height: 1;
    margin-bottom: 8px;
}

.benefit-item h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.benefit-item p {
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== Products ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.product-card.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.product-visual {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-green {
    background: linear-gradient(135deg, var(--green-50), var(--green-100));
    color: var(--green-600);
}

.product-blue {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    color: #2563eb;
}

.product-amber {
    background: linear-gradient(135deg, #fffbeb, #fef3c7);
    color: #d97706;
}

.product-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    padding: 24px 24px 8px;
    color: var(--gray-900);
}

.product-card p {
    font-size: 0.9375rem;
    color: var(--gray-500);
    padding: 0 24px 28px;
    line-height: 1.6;
}

/* ===== Stats (Impacto) ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.stat-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.stat-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--green-200);
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--green-600);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

/* ===== Team ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.team-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.team-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--green-200);
}

.team-avatar {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    color: var(--green-600);
    border-radius: 50%;
    margin: 0 auto 16px;
}

.team-card h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.team-card p {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* ===== Congress ===== */
.congress-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.congress-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(24px);
}

.congress-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.congress-card:hover {
    background: rgba(255,255,255,0.08);
    border-color: rgba(74, 222, 128, 0.3);
}

.congress-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: rgba(74, 222, 128, 0.1);
    color: var(--green-400);
    border-radius: 14px;
}

.congress-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.congress-card p {
    font-size: 1.0625rem;
    color: var(--white);
    font-weight: 600;
}

.congress-cta {
    text-align: center;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-form {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 0.9375rem;
    font-family: inherit;
    border: 1.5px solid var(--gray-200);
    border-radius: 10px;
    background: var(--gray-50);
    color: var(--gray-800);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--green-500);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding-top: 20px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-item svg {
    flex-shrink: 0;
    color: var(--green-600);
    margin-top: 2px;
}

.contact-item strong {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-900);
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 0.9375rem;
    color: var(--gray-500);
}

/* ===== Footer ===== */
footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 60px 0 32px;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
}

.footer-brand {
    text-align: center;
}

.footer-brand p {
    font-size: 0.875rem;
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--gray-400);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--green-400);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.08);
    width: 100%;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
}

/* ===== Animations ===== */
.feature-card,
.step,
.benefit-item,
.product-card,
.stat-card,
.team-card,
.congress-card {
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow var(--transition), border-color var(--transition);
}

.step:nth-child(1) { transition-delay: 0s; }
.step:nth-child(3) { transition-delay: 0.1s; }
.step:nth-child(5) { transition-delay: 0.2s; }

.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.2s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 60px 24px;
    }

    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .features-grid,
    .products-grid,
    .congress-details {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

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

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

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

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

    .steps {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        transform: rotate(90deg);
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-110%);
        transition: var(--transition);
        gap: 4px;
    }

    .nav-links.open {
        transform: translateY(0);
    }

    .nav-links a {
        display: block;
        padding: 12px 16px;
        font-size: 1rem;
    }

    .section {
        padding: 72px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .benefits-grid,
    .stats-grid,
    .team-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form {
        padding: 24px;
    }

    .hero-scroll {
        display: none;
    }
}