@import url('https://fonts.googleapis.com/css2?family=Hind:wght@400;500;600;700;800&display=swap');

/* Variables de color basadas en tu imagen */
:root {
    --primary-dark: #001529;    /* Azul muy oscuro del botón */
    --text-main: #2d3748;      /* Gris oscuro para el logo/menú */
    --lang-bg: #e2e8f0;        /* Gris claro del botón de idioma */
    --lang-text: #718096;      /* Texto del botón de idioma */
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
}

body {
    font-family: 'Hind', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    padding: 0.5rem 5%;
    background-color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-img {
    height: 62px;
    width: auto;
}

.logo-text {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: 1px;
}

.nav-links {
    margin-left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px 2px;
    flex: 1;
    flex-wrap: wrap;
    min-width: 320px;
}

.nav-links a {
    text-decoration: none;
    color: #031635;
    margin: 0 10px;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: 'Hind', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: color 0.3s;
    white-space: nowrap;
}

.nav-links a:hover {
    color: #4AB787;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.btn-primary {
    background-color: #031635;
    color: var(--white);
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.82rem;
    font-family: 'Hind', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.lang-btn {
    background-color: var(--lang-bg);
    color: var(--lang-text);
    border: none;
    padding: 6px 11px;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    font-size: 0.72rem;
    transition: background 0.3s;
}

.lang-btn:hover {
    background-color: #cbd5e0;
}


.hero {
    min-height: calc(100vh - 96px);
    height: auto;
    background: linear-gradient(rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.1)), 
                url('img/fondo-hydrosmart.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    padding: clamp(2rem, 6vw, 4rem) 5%;
    scroll-margin-top: 88px;
}

.hero-content {
    width: min(100%, 820px);
    transform: translateY(-24px);
}

.hero-content h1 {
    color: var(--white);
    font-size: clamp(1.8rem, 4.8vw, 2.8rem);
    font-weight: 800;
    line-height: 1.28;
    margin-bottom: 20px;
    text-shadow: 0 2px 15px rgba(0,0,0,0.3);
    font-family: 'Hind', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    white-space: pre-line;
}


.btn-secondary {
    background-color: var(--white);
    color: #031635;
    border: none;
    padding: 14px 30px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    box-shadow: 0 4px 15px lch(0% 0 0 / 0.1);
    transition: transform 0.2s;
    font-family: 'Hind', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin-top: 8px;
}

.btn-secondary:hover {
    transform: translateY(-2px);
}

.benefits-section {
    position: relative;
    overflow: hidden;
    padding: 5rem 5% 4rem;
    background: linear-gradient(180deg, #eaf1fb 0%, #f4f7fc 68%, #dfe8f4 100%);
    scroll-margin-top: 88px;
}

.benefits-section::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(157, 175, 207, 0) 0%, rgba(157, 175, 207, 0.06) 78%, rgba(157, 175, 207, 0.14) 100%);
    pointer-events: none;
}

.benefits-header,
.benefits-grid,
.benefits-cta {
    position: relative;
    z-index: 1;
}

.benefits-header {
    text-align: center;
    margin-bottom: 3rem;
}

.benefits-header h2 {
    color: #031635;
    font-size: clamp(2rem, 3.4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.benefits-header p {
    color: #666666;
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    font-weight: 500;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2rem 2.6rem;
    max-width: 1120px;
    margin: 0 auto;
}

.benefit-card {
    background: var(--white);
    border-radius: 10px;
    padding: 1.7rem 1.5rem 1.55rem;
    text-align: center;
    box-shadow: 0 2px 10px rgba(3, 22, 53, 0.14);
    border: 1px solid rgba(3, 22, 53, 0.08);
    min-height: 200px;
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
    will-change: transform;
    cursor: pointer;
}

.benefit-card:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 14px 28px rgba(3, 22, 53, 0.18);
    border-color: rgba(3, 22, 53, 0.14);
    position: relative;
    z-index: 1;
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.08);
}

.benefit-icon {
    width: 58px;
    height: 58px;
    object-fit: contain;
    margin-bottom: 1rem;
    transition: transform 0.28s ease;
}

.benefit-card h3 {
    color: #031635;
    font-size: clamp(1.05rem, 1.5vw, 1.38rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.benefit-card p {
    color: #666666;
    font-size: 0.92rem;
    line-height: 1.7;
    font-weight: 400;
}

.benefits-cta {
    display: flex;
    justify-content: center;
    margin-top: 2.75rem;
}

.btn-primary--cta {
    padding: 0.95rem 2.4rem;
    border-radius: 14px;
    box-shadow: 0 10px 20px rgba(3, 22, 53, 0.18);
}

.btn-primary--cta:hover {
    transform: translateY(-2px);
}

.features-section {
    padding: 4.5rem 5%;
    background: #f7f9fc;
    scroll-margin-top: 88px;
}

.features-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 2.5rem;
}

.features-header h2 {
    color: #031635;
    font-size: clamp(1.9rem, 3.1vw, 2.7rem);
    font-weight: 800;
    margin-bottom: 0.6rem;
}

.features-header p {
    color: #4e5c74;
    font-size: clamp(0.98rem, 1.4vw, 1.1rem);
}

.features-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 2rem 2.6rem;
	max-width: 1120px;
	margin: 0 auto;
}

.feature-card {
	background: var(--white);
	border-radius: 10px;
	padding: 2rem 1.8rem;
	text-align: center;
	box-shadow: 0 2px 10px rgba(3, 22, 53, 0.12);
	border: 1px solid rgba(3, 22, 53, 0.08);
	min-height: 240px;
	transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
	will-change: transform;
	cursor: pointer;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.feature-card:hover {
	transform: translateY(-6px) scale(1.03);
	box-shadow: 0 14px 28px rgba(3, 22, 53, 0.16);
	border-color: rgba(3, 22, 53, 0.14);
	position: relative;
	z-index: 1;
}

.feature-card:hover .feature-badge {
	transform: scale(1.08);
}

.feature-badge {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 50px;
	height: 50px;
	border-radius: 50%;
	background: rgba(74, 183, 135, 0.15);
	color: #0b7a57;
	font-size: 1.1rem;
	font-weight: 700;
	margin-bottom: 1.2rem;
	transition: transform 0.28s ease;
}

.feature-card h3 {
	color: #031635;
	font-size: clamp(1.05rem, 1.5vw, 1.3rem);
	font-weight: 800;
	line-height: 1.2;
	margin-bottom: 0.8rem;
}

.feature-card p {
	color: #666666;
	font-size: 0.92rem;
	line-height: 1.7;
	font-weight: 400;
}

.features-cta {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

.features-cta a {
    text-decoration: none;
}

@media (max-width: 1200px) {
    .nav-links a {
        margin: 0 8px;
        font-size: 0.9rem;
    }

    .btn-primary {
        padding: 9px 18px;
    }
}

@media (max-width: 992px) {
    .navbar {
        padding: 0.55rem 4%;
        gap: 12px;
    }

    .logo-img {
        height: 54px;
    }

    .nav-links {
        order: 3;
        flex-basis: 100%;
        min-width: 0;
        justify-content: flex-start;
        row-gap: 8px;
    }

    .nav-actions {
        margin-left: auto;
    }

    .hero {
        min-height: 70vh;
        padding: 3rem 4%;
    }

    .hero-content {
        transform: translateY(-12px);
    }

    .benefits-section {
        padding: 4rem 4% 3.5rem;
    }

    .benefits-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 1.5rem;
    }

    .features-section {
        padding: 3.8rem 4%;
    }

    .features-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0.5rem 4%;
    }

    .logo-img {
        height: 48px;
    }

    .nav-links {
        justify-content: center;
    }

    .nav-links a {
        margin: 0 6px;
        font-size: 0.88rem;
    }

    .nav-actions {
        width: 100%;
        justify-content: center;
        gap: 10px;
    }

    .btn-primary {
        font-size: 0.85rem;
        padding: 9px 16px;
    }

    .lang-btn {
        font-size: 0.75rem;
        padding: 7px 12px;
    }

    .hero {
        min-height: 65vh;
        padding: 2.2rem 4%;
    }

    .hero-content {
        max-width: 100%;
        transform: none;
    }

    .hero-content h1 {
        line-height: 1.32;
        margin-bottom: 16px;
    }

    .btn-secondary {
        padding: 12px 24px;
        font-size: 0.85rem;
    }

    .benefits-header {
        margin-bottom: 2.25rem;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .benefit-card {
        padding: 1.5rem 1.35rem 1.4rem;
        min-height: auto;
    }

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

    .feature-card {
        padding: 1.35rem;
    }
}

@media (max-width: 480px) {
    .nav-links {
        gap: 6px 4px;
    }

    .nav-links a {
        margin: 0 4px;
        font-size: 0.82rem;
    }

    .hero {
        min-height: 60vh;
    }

    .hero-content h1 {
        font-size: 1.55rem;
    }

    .btn-secondary {
        width: 100%;
        max-width: 260px;
    }

    .benefits-section {
        padding: 3.25rem 4% 3rem;
    }

    .benefits-header h2 {
        font-size: 1.7rem;
    }

    .benefits-header p {
        font-size: 0.95rem;
    }

    .benefit-card p {
        font-size: 0.88rem;
    }

    .features-section {
        padding: 3.2rem 4%;
    }
}

.faq-section {
    padding: 5rem 5% 4rem;
    background: linear-gradient(180deg, #eaf1fb 0%, #f4f7fc 68%, #dfe8f4 100%);
    scroll-margin-top: 88px;
}

.faq-header {
    text-align: center;
    margin-bottom: 3rem;
}

.faq-header h2 {
    color: #031635;
    font-size: clamp(2rem, 3.4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
}

.faq-container {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 10px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(3, 22, 53, 0.12);
    border: 1px solid rgba(3, 22, 53, 0.08);
    overflow: hidden;
    transition: box-shadow 0.28s ease;
}

.faq-item.active {
    box-shadow: 0 8px 20px rgba(3, 22, 53, 0.16);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.5rem;
    background: var(--white);
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: #031635;
    font-family: 'Hind', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background-color 0.28s ease;
}

.faq-question:hover {
    background-color: #f7f9fc;
}

.faq-icon {
    font-size: 1.5rem;
    color: #666666;
    font-weight: 400;
    transition: transform 0.28s ease, color 0.28s ease;
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq-item.active .faq-question {
    border-bottom: 2px solid rgba(3, 22, 53, 0.08);
}

.faq-item.active .faq-icon {
    transform: scaleY(-1);
    color: #4AB787;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.28s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 1.5rem;
    color: #666666;
    font-size: 0.95rem;
    line-height: 1.7;
    font-weight: 400;
}

/* Footer Section */
.footer-section {
    background-color: #001529;
    color: #ffffff;
    padding: 4rem 5% 2rem;
    scroll-margin-top: 88px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-about {
    max-width: 350px;
}

.footer-about h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-about p {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.75);
    font-weight: 400;
}

.footer-links h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

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

.footer-links li {
    margin-bottom: 0.7rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 400;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #4AB787;
}

.footer-social h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
}

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

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--white);
    text-decoration: none;
    transition: background-color 0.3s ease, color 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.social-icon:hover {
    background-color: #4AB787;
    border-color: #4AB787;
    color: var(--white);
}

.social-icon svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    font-weight: 400;
}

/* FAQ and Footer Responsive */
@media (max-width: 992px) {
    .faq-section {
        padding: 4rem 4% 3.5rem;
    }

    .footer-content {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 2.5rem 2rem;
    }

    .footer-section {
        padding: 3.5rem 4% 2rem;
    }
}

@media (max-width: 768px) {
    .faq-section {
        padding: 3.5rem 4% 3rem;
    }

    .faq-header h2 {
        font-size: 1.8rem;
    }

    .faq-question {
        padding: 1.2rem;
        font-size: 0.95rem;
    }

    .faq-answer p {
        padding: 1.2rem;
        font-size: 0.9rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-about {
        max-width: 100%;
    }

    .footer-section {
        padding: 3rem 4% 1.5rem;
    }

    .social-icons {
        gap: 0.8rem;
    }

    .social-icon {
        width: 36px;
        height: 36px;
    }

    .social-icon svg {
        width: 18px;
        height: 18px;
    }
}

@media (max-width: 480px) {
    .faq-section {
        padding: 2.5rem 4%;
    }

    .faq-header h2 {
        font-size: 1.5rem;
    }

    .faq-question {
        padding: 1rem;
        font-size: 0.9rem;
    }

    .faq-icon {
        font-size: 1.2rem;
        margin-left: 0.5rem;
    }

    .faq-answer p {
        padding: 1rem;
        font-size: 0.85rem;
    }

    .footer-section {
        padding: 2rem 4% 1rem;
    }

    .footer-about h3 {
        font-size: 1.3rem;
    }

    .footer-about p {
        font-size: 0.95rem;
    }

    .footer-links h4,
    .footer-social h4 {
        font-size: 1.05rem;
        margin-bottom: 0.8rem;
    }

    .footer-links a {
        font-size: 0.95rem;
    }

    .social-icons {
        gap: 0.6rem;
    }

    .social-icon {
        width: 32px;
        height: 32px;
    }

    .social-icon svg {
        width: 16px;
        height: 16px;
    }

    .footer-bottom p {
        font-size: 0.8rem;
    }
}