/* =========================================
   VARIABLES & DESIGN TOKENS
   ========================================= */
:root {
    /* Color Palette */
    --color-white: #FFFFFF;
    --color-beige: #F5F1E8;
    --color-dark-blue: #0F1C3F;
    --color-gold: #D4AF37;

    /* Typography */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;

    /* Layout */
    --transition-fast: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Dark Mode Overrides */
body.dark-theme {
    /* We invert the functional colors */
    --color-white: #0A1328;
    --color-beige: #0F1C3F;
    --color-dark-blue: #F5F1E8;
    /* We keep gold */
    --color-gold: #D4AF37;
}

/* =========================================
   RESET & BASICS
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-dark-blue);
    background-color: var(--color-white);
    /* Base bg */
    overflow-x: hidden;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.container {
    width: 100%;
    max-width: 1280px;
    padding: 0 5%;
    margin: 0 auto;
}

/* =========================================
   HEADER (NAVIGATION)
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 24px 0;
    /* Transparent init state */
    background-color: transparent;
    transition: background-color var(--transition-fast), padding var(--transition-fast), box-shadow var(--transition-fast);
}

.header.scrolled {
    background-color: var(--color-white);
    padding: 14px 0;
    box-shadow: 0 4px 20px rgba(15, 28, 63, 0.06);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: clamp(35px, 6vw, 55px);
    width: auto;
    transition: height var(--transition-fast), transform var(--transition-fast);
}

.logo:hover img {
    transform: scale(1.02);
}

.header.scrolled .logo img {
    height: clamp(28px, 5vw, 45px);
}

/* Header Right (Nav + Actions grouped) */
.header-right {
    display: flex;
    align-items: center;
    gap: 40px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Theme Toggle Button */
.btn-theme {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-dark-blue);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-beige);
    transition: transform var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-theme:hover {
    background-color: var(--color-gold);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
}

.menu-toggle {
    display: none;
    color: var(--color-dark-blue);
    padding: 5px;
    z-index: 1001;
    /* Stay above nav */
}

/* Hamburger Animation */
.menu-toggle line {
    transition: transform var(--transition-fast), opacity var(--transition-fast);
    transform-origin: center;
}

body.menu-open .menu-toggle .line1 {
    transform: translateY(6px) rotate(45deg);
}
body.menu-open .menu-toggle .line2 {
    opacity: 0;
}
body.menu-open .menu-toggle .line3 {
    transform: translateY(-6px) rotate(-45deg);
}

/* Main Nav */
.main-nav ul {
    display: flex;
    gap: 40px;
}

.nav-link {
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 1rem;
    color: var(--color-dark-blue);
    position: relative;
    padding: 8px 0;
    transition: color var(--transition-fast);
}

/* Nav Link Hover Effect */
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-gold);
    transition: width var(--transition-fast);
}

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

.nav-link:hover::after {
    width: 100%;
}

/* Cart Button */
.btn-cart {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: var(--color-dark-blue);
    color: var(--color-white);
    padding: 10px 24px;
    border-radius: 50px;
    /* Pill shape */
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 4px 12px rgba(15, 28, 63, 0.15);
    transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

/* Cart Button Hover */
.btn-cart:hover {
    background-color: var(--color-gold);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(212, 175, 55, 0.35);
}

.btn-cart svg {
    transition: transform var(--transition-fast);
}

.btn-cart:hover svg {
    transform: scale(1.1);
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background-image: url('../img/fondoHero.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    /* Adding a subtle fallback color */
    background-color: var(--color-beige);
    padding-top: 100px;
    /* Offset for absolute header */
}

/* Overlay to blend text if image is complex */
.hero-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Subtle gradient to ensure dark blue text stays readable */
    background: linear-gradient(100deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0) 100%);
    z-index: 1;
    pointer-events: none;
    transition: background var(--transition-fast);
}

body.dark-theme .hero-bg-overlay {
    background: linear-gradient(100deg, rgba(10, 19, 40, 0.7) 0%, rgba(10, 19, 40, 0.2) 100%);
}

.hero-container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

/* Hero Content (Left) */
.hero-content {
    flex: 1;
    max-width: 50%;
    padding-right: 6%;
}

.hero-content h1 {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 6vw, 5.5rem);
    font-weight: 500;
    line-height: 1.05;
    color: var(--color-dark-blue);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-content p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-dark-blue);
    margin-bottom: 40px;
    max-width: 480px;
    opacity: 0.9;
}

/* Primary Button */
.btn-primary {
    display: inline-block;
    background-color: var(--color-dark-blue);
    color: var(--color-white);
    padding: 16px 40px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(15, 28, 63, 0.2);
    transition: transform var(--transition-fast), background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    background-color: var(--color-gold);
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(212, 175, 55, 0.4);
}

/* Hero Image (Right) */
.hero-image-wrapper {
    flex: 1;
    max-width: 50%;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.hero-product-img {
    max-width: 130%;
    height: auto;
    /* Soft floating animation to give dynamic feel */
    animation: float 6s ease-in-out infinite;
    transform-origin: center;
    filter: drop-shadow(0 30px 40px rgba(15, 28, 63, 0.2));
}

/* Keyframes for micro-animations */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-16px);
    }

    100% {
        transform: translateY(0px);
    }
}

/* =========================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================= */

/* Desktop / Tablets Landscape (Handled via clamp) */

/* Tablets Portrait */
@media (max-width: 820px) {
    .menu-toggle {
        display: block;
    }

    .header-right .main-nav {
        display: none; 
    }
    
    .header-actions .btn-theme {
        display: none;
    }
    
    .header-actions .btn-cart {
        display: flex;
    }

    body.menu-open {
        overflow: hidden;
    }

    body.menu-open .header {
        background-color: var(--color-white);
        bottom: 0;
        height: 100vh;
        display: flex;
        flex-direction: column;
        box-shadow: none;
    }

    body.menu-open .header-container {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        height: 100%;
        gap: 40px;
    }

    body.menu-open .header-right {
        flex-direction: column;
        gap: 40px;
    }

    body.menu-open .header-right .main-nav {
        display: flex;
        align-items: center;
    }

    body.menu-open .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 25px;
    }
    
    body.menu-open .nav-link {
        font-size: 1.5rem;
    }

    body.menu-open .header-actions {
        flex-direction: column;
        gap: 20px;
    }
    
    body.menu-open .header-actions .btn-theme {
        display: flex;
    }

    body.menu-open .menu-toggle {
        position: absolute;
        top: 24px;
        right: 5%;
    }

    body.menu-open .logo img {
        height: 70px;
    }

    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
        gap: 50px;
        padding-top: 40px;
        padding-bottom: 50px;
    }

    .hero-content {
        max-width: 100%;
        padding-right: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-content h1 br,
    .hero-content p br {
        display: none;
    }

    /* Remove breaks on mobile */

    .hero-image-wrapper {
        max-width: 80%;
        justify-content: center;
    }
}

/* Mobile Phones */
@media (max-width: 600px) {
    .header-container {
        justify-content: space-between;
    }

    .btn-primary {
        width: 100%;
        text-align: center;
        padding: 16px 20px;
    }

    .hero-image-wrapper {
        max-width: 90%;
    }

    .btn-cart {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .btn-cart svg {
        width: 18px;
        height: 18px;
    }

    .header-right {
        gap: 15px;
    }
}

/* =========================================
   SECCIÓN PROBLEMAS
   ========================================= */
.section-problemas {
    background-color: var(--color-white);
    padding: 120px 0;
    transition: background-color var(--transition-fast);
}

.section-problemas .section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-problemas h2 {
    font-family: var(--font-serif);
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    color: var(--color-dark-blue);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.01em;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
    max-width: 1000px;
    margin: 0 auto;
}

.problem-card {
    background-color: var(--color-white);
    border-radius: 36px;
    padding: 16px;
    box-shadow: 0 16px 40px rgba(15, 28, 63, 0.08); /* Elegant airy shadow */
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body.dark-theme .problem-card {
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(15, 28, 63, 0.12);
}

body.dark-theme .problem-card:hover {
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.card-image {
    width: 100%;
    aspect-ratio: 16 / 11;
    overflow: hidden;
    border-radius: 24px;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.problem-card:hover .card-image img {
    transform: scale(1.04);
}

.card-content {
    padding: 30px 16px 20px 16px;
    text-align: left;
    font-family: var(--font-sans);
}

.card-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-dark-blue);
    opacity: 0.35;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.card-content h3 {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-dark-blue);
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.card-content p {
    font-family: var(--font-sans);
    font-size: 1.15rem;
    color: var(--color-dark-blue);
    opacity: 0.65;
    line-height: 1.45;
    letter-spacing: -0.01em;
}

/* Responsive Problemas */
@media (max-width: 820px) {
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        max-width: 500px;
    }
    .section-problemas {
        padding: 80px 0;
    }
    .card-content {
        padding: 30px 20px;
    }
}

/* =========================================
   FOOTER
   ========================================= */
.main-footer {
    background-color: var(--color-dark-blue);
    padding: 50px 0;
    transition: background-color var(--transition-fast);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    font-family: var(--font-sans);
}

.footer-left-group {
    display: flex;
    align-items: center;
    gap: 30px;
}

.footer-logo img {
    height: 38px;
    filter: brightness(0) invert(1); /* Turns dark logo white for dark blue bg */
    transition: filter var(--transition-fast), transform var(--transition-fast);
}

body.dark-theme .footer-logo img {
    filter: none; /* In dark mode, footer is beige, logo stays its natural dark tone */
}

.footer-logo:hover img {
    transform: scale(1.03);
}

.footer-divider {
    width: 1px;
    height: 45px;
    background-color: var(--color-white);
    opacity: 0.2;
}

.footer-mid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-links {
    display: flex;
    gap: 15px;
}

.footer-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-white);
    opacity: 0.75;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--color-gold);
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--color-white);
    opacity: 0.45;
    margin: 0;
}

.footer-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
}

.social-links {
    display: flex;
    gap: 18px;
    margin: 0;
}

.social-links a {
    color: var(--color-white);
    opacity: 0.75;
    transition: transform var(--transition-fast), color var(--transition-fast), opacity var(--transition-fast);
}

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

.social-links a:hover {
    color: var(--color-gold);
    opacity: 1;
    transform: translateY(-2px);
}

.footer-email {
    font-size: 0.9rem;
    color: var(--color-white);
    opacity: 0.55;
    margin: 0;
}

/* Responsive Footer */
@media (max-width: 820px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }

    .footer-left-group {
        flex-direction: column;
        gap: 20px;
    }

    .footer-divider {
        width: 80px;
        height: 1px;
    }

    .footer-mid {
        align-items: center;
    }

    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
        gap: 20px;
    }

    .footer-right {
        align-items: center;
    }
}