/* VoltOne V2 - Estilos Globales Responsive */

/* ========================================
   VARIABLES CSS (Design Tokens)
   ======================================== */
:root {
    /* Colores principales */
    --color-primary: #005D4B;
    --color-primary-dark: #004a3c;
    --color-secondary: #B4E8FC;
    --color-secondary-dark: #9DD9E3;
    --color-white: #FFFFFF;
    --color-text-dark: #052525;
    --color-text-light: #052525;
    --color-accent-light: #E8F7F9;

    /* Border radius */
    --border-radius: 20px;
    --border-radius-sm: 10px;
    --border-radius-lg: 20px;
    --border-radius-full: 100px;

    /* Transiciones */
    --transition-fast: all 0.2s ease;
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;

    /* Sombras */
    --shadow-sm: 0 2px 10px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-btn: 0 4px 12px rgba(0, 93, 75, 0.3);

    /* Dimensiones */
    --max-width: 1400px;
    --max-width-content: 1156px;
    --max-width-narrow: 800px;
    --max-width-text: 632px;

    /* Espaciado fluido (mobile → desktop) */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(1rem, 2vw, 1.5rem);
    --space-md: clamp(1.5rem, 3vw, 2.5rem);
    --space-lg: clamp(2rem, 4vw, 4rem);
    --space-xl: clamp(3rem, 6vw, 6rem);
    --space-2xl: clamp(4rem, 8vw, 8rem);

    /* Padding de contenedores */
    --container-padding: clamp(1rem, 5vw, 5rem);
}

/* ========================================
   RESET Y ESTILOS BASE
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

@font-face {
    font-family: 'Instrument Sans';
    src: url('../fonts/InstrumentSans-VariableFont_wdth,wght.ttf') format('truetype');
    font-weight: 100 900;
    font-stretch: 75% 100%;
    font-display: swap;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--color-text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   TIPOGRAFÍA FLUIDA (Mobile-first)
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 0;
}

h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem); /* 28px → 40px */
    font-weight: 600;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2rem); /* 24px → 32px */
    font-weight: 600;
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem); /* 20px → 24px */
    font-weight: 600;
}

h4 {
    font-size: clamp(1.125rem, 2vw, 1.25rem); /* 18px → 20px */
    font-weight: 500;
}

p {
    font-size: clamp(0.938rem, 1.5vw, 1rem); /* 15px → 16px */
    line-height: 1.7;
    color: var(--color-text-light);
    font-weight: 400;
}

/* ========================================
   HEADER (Mobile-first con hamburguesa)
   ======================================== */
.header {
    padding: clamp(0.75rem, 2vw, 1.25rem) clamp(1rem, 3vw, 2.5rem);
    background: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    text-decoration: none;
    z-index: 1001;
}

.logo {
    height: clamp(2.5rem, 5vw, 5rem); /* 40px → 80px */
    width: auto;
    transition: var(--transition);
}

/* Menú Desktop - oculto en móvil */
.nav-menu {
    display: none;
    gap: clamp(1rem, 2vw, 2rem);
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-text-dark);
    font-size: clamp(0.875rem, 1vw, 1rem);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

/* Menú Hamburguesa (móvil) */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
    transition: var(--transition);
}

.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-text-dark);
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu Overlay */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-white);
    box-shadow: -5px 0 20px rgba(0,0,0,0.1);
    padding: 4.5rem 1.5rem 6rem;
    z-index: 1000;
    transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    font-family: 'Instrument Sans', sans-serif;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    z-index: 999;
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu nav {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.mobile-menu nav a {
    text-decoration: none;
    color: var(--color-text-dark);
    font-size: 0.938rem;
    font-weight: 500;
    padding: 0.625rem 0;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    transition: var(--transition);
    font-family: 'Instrument Sans', sans-serif;
}

.mobile-menu nav a:hover,
.mobile-menu nav a.active {
    color: var(--color-primary);
    background-color: rgba(0,93,75,0.03);
}

.mobile-menu nav p {
    font-size: 0.688rem;
    text-transform: uppercase;
    font-weight: 700;
    color: #6b7280;
    margin: 0.75rem 0 0.5rem;
    font-family: 'Instrument Sans', sans-serif;
    letter-spacing: 0.5px;
}

.mobile-menu nav hr {
    border: none;
    border-top: 1px solid rgba(0,0,0,0.1);
    margin: 0.75rem 0;
}

/* Desktop: mostrar nav, ocultar hamburguesa */
@media (min-width: 769px) {
    .nav-menu {
        display: flex;
    }

    .hamburger {
        display: none;
    }

    /* Dropdown Menu Styles */
    .nav-menu .dropdown {
        position: relative;
    }

    .nav-menu .dropdown > a::after {
        content: ' ▾';
        font-size: 0.75em;
        margin-left: 0.25rem;
    }

    .nav-menu .dropdown-menu {
        position: absolute;
        top: 100%;
        left: 0;
        background: var(--color-white);
        list-style: none;
        padding: 0.5rem 0;
        margin-top: 0.5rem;
        min-width: 200px;
        border-radius: var(--border-radius-sm);
        box-shadow: var(--shadow-md);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        z-index: 100;
    }

    .nav-menu .dropdown:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-menu .dropdown-menu li {
        list-style: none;
    }

    .nav-menu .dropdown-menu a {
        display: block;
        padding: 0.625rem 1.25rem;
        color: var(--color-text-dark);
        text-decoration: none;
        font-size: 0.875rem;
        font-weight: 500;
        transition: var(--transition);
        white-space: nowrap;
    }

    .nav-menu .dropdown-menu a::after {
        display: none;
    }

    .nav-menu .dropdown-menu a:hover {
        background: var(--color-accent-light);
        color: var(--color-primary);
    }
}

/* ========================================
   BOTONES
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: clamp(0.875rem, 1vw, 1.094rem) clamp(1.5rem, 3vw, 2.5rem);
    border-radius: var(--border-radius-full);
    font-size: clamp(0.75rem, 1vw, 0.875rem);
    font-weight: 700;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    white-space: nowrap;
    min-height: 44px; /* Accesibilidad táctil */
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    min-width: clamp(150px, 15vw, 187px);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--color-primary);
    min-width: clamp(120px, 12vw, 133px);
}

.btn-secondary:hover {
    background: var(--color-secondary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ========================================
   LAYOUT Y CONTENEDORES
   ======================================== */
.section {
    padding: var(--space-2xl) var(--container-padding);
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-lg);
}

/* ========================================
   HERO SECTION (Responsive fluido)
   ======================================== */
.hero {
    background: var(--color-secondary);
    border-radius: var(--border-radius);
    padding: var(--space-md) var(--space-lg) var(--space-lg) var(--space-lg);
    margin: var(--space-xl) auto;
    max-width: var(--max-width-content);
    min-height: clamp(400px, 60vh, 600px);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    align-items: center;
    overflow: hidden;
    position: relative;
}

.hero-content h1 {
    margin-bottom: var(--space-sm);
}

.hero-content p {
    margin-bottom: var(--space-md);
    opacity: 0.95;
}

.hero-image {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-sm);
    position: relative;
}

.hero-image-title {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-weight: 600;
    color: var(--color-text-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
    text-align: center;
    line-height: 1.3;
}

.phone-mockup {
    max-width: 100%;
    height: auto;
    max-height: 600px;
    object-fit: contain;
    display: block;
    align-self: flex-end;
    margin-bottom: -12rem;
    margin-right: calc(var(--space-lg) * -1);
}

/* Columna central: Apps */
.hero-apps {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-md);
    align-self: stretch;
}

.hero-apps-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
}

.app-with-qr {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.qr-code {
    display: flex;
    align-items: center;
}

.qr-image {
    width: auto;
    height: clamp(90px, 10vw, 120px);
    display: block;
    border-radius: 4px;
}

.hero-apps-buttons .app-button {
    display: flex;
    align-items: center;
    border: none;
    background: transparent;
}

.hero-apps-buttons .app-button img {
    height: clamp(45px, 6vw, 55px);
    width: auto;
    display: block;
}

/* Desktop hero: 3 columnas */
@media (min-width: 769px) {
    .hero {
        grid-template-columns: minmax(280px, 1fr) minmax(200px, 0.6fr) minmax(280px, 1fr);
        gap: var(--space-lg);
    }
}

/* CTAs del hero */
.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: var(--space-md);
}

.btn-hero {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 1rem 2rem;
    border-radius: var(--border-radius-full);
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-hero:hover::before {
    opacity: 1;
}

.btn-hero-primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(0, 93, 75, 0.3);
}

.btn-hero-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 93, 75, 0.4);
}

.btn-hero-primary svg {
    transition: transform 0.3s ease;
}

.btn-hero-primary:hover svg {
    transform: translateX(5px);
}

.btn-hero-secondary {
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-hero-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-hero-secondary:hover svg {
    stroke: var(--color-white);
}

/* Responsive CTAs */
@media (max-width: 768px) {
    .hero-ctas {
        flex-direction: column;
        width: 100%;
    }

    .btn-hero {
        width: 100%;
        justify-content: center;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }

    .phone-mockup {
        margin-bottom: -6rem;
    }

    .qr-code {
        display: none;
    }
}

/* ========================================
   TARJETAS (Cards)
   ======================================== */
.card {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-light {
    background: var(--color-secondary);
}

/* ========================================
   SECCIÓN DE BENEFICIOS (Mejorada)
   ======================================== */
.benefits-section {
    background: var(--color-primary);
    padding: var(--space-2xl) var(--container-padding);
    color: var(--color-white);
    margin: var(--space-2xl) auto;
    max-width: var(--max-width-content);
    border-radius: var(--border-radius);
}

.benefit-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    align-items: center;
    padding: var(--space-lg) 0;
}

.benefit-item:not(:last-child) {
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.benefit-image {
    background: var(--color-secondary);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    width: 100%;
    aspect-ratio: 4 / 5;
    max-width: 400px;
    margin: 0 auto;
}

.benefit-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    transition: transform 0.5s ease;
}

.benefit-image:hover img {
    transform: scale(1.05);
}

.benefit-content {
    max-width: 100%;
}

.benefit-content h3 {
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.benefit-content p {
    color: var(--color-white);
    margin-bottom: var(--space-md);
    opacity: 0.95;
}

/* Desktop: layout alternado */
@media (min-width: 769px) {
    .benefit-item {
        grid-template-columns: minmax(280px, 325px) 1fr;
        gap: var(--space-xl);
        padding: var(--space-xl) var(--space-lg);
    }

    .benefit-item:nth-child(even) {
        direction: rtl;
    }

    .benefit-item:nth-child(even) > * {
        direction: ltr;
    }

    .benefit-image {
        margin: 0;
    }
}

/* ========================================
   FAQ / ACCORDION
   ======================================== */
.faq-section {
    background: var(--color-white);
    padding: var(--space-2xl) var(--container-padding);
    margin-top: var(--space-2xl);
}

.accordion {
    max-width: var(--max-width-text);
    margin: 0 auto;
}

.accordion-item {
    border-bottom: 1px solid var(--color-text-dark);
    padding: var(--space-md) 0;
}

.accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    font-size: clamp(1.125rem, 2vw, 1.875rem);
    color: var(--color-text-dark);
    gap: 1rem;
}

.accordion-icon {
    font-size: 1.5rem;
    transition: var(--transition);
    flex-shrink: 0;
}

.accordion-item.active .accordion-icon {
    transform: rotate(45deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    color: var(--color-text-light);
    text-align: justify;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
    padding-top: var(--space-sm);
}

/* ========================================
   FORMULARIOS
   ======================================== */
.form-section {
    background: var(--color-secondary);
    border-radius: var(--border-radius);
    padding: var(--space-xl) var(--container-padding);
    margin: var(--space-2xl) auto;
    max-width: var(--max-width-content);
}

.form-section h2 {
    font-size: clamp(2rem, 5vw, 3.75rem);
    margin-bottom: var(--space-sm);
}

.form-section > .container > p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-sm);
}

.form-group label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--color-text-dark);
}

.form-control {
    width: 100%;
    padding: clamp(0.625rem, 1vw, 0.875rem) clamp(0.875rem, 1.5vw, 1.25rem);
    border: 2px solid transparent;
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: 'Instrument Sans', sans-serif;
    background: var(--color-white);
    min-height: 44px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 93, 75, 0.1);
}

textarea.form-control {
    min-height: clamp(80px, 10vw, 120px);
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
}

.checkbox-group input[type="checkbox"] {
    margin-top: 0.25rem;
    min-width: 18px;
    min-height: 18px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: #052525;
    color: var(--color-white);
    padding: var(--space-2xl) var(--container-padding) var(--space-md);
    margin-top: var(--space-2xl);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

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

.footer-logo-container {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-md);
}

.footer-logo {
    height: clamp(3rem, 6vw, 5rem);
    width: auto;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition);
    font-size: clamp(0.875rem, 1vw, 1rem);
}

.footer-links a:hover {
    color: var(--color-white);
    padding-left: 0.5rem;
}

.footer-apps {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.app-button {
    display: inline-block;
}

.app-button img {
    height: clamp(40px, 5vw, 50px);
    width: auto;
}

.footer-social {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    flex-wrap: wrap;
}

.social-icon {
    color: var(--color-white);
    font-size: 1.5rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
}

.social-icon:hover {
    transform: translateY(-3px);
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.7);
    font-size: clamp(0.75rem, 1vw, 0.875rem);
}

/* Footer Desktop: grid de 3 columnas */
@media (min-width: 769px) {
    .footer-container {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

/* ========================================
   UTILIDADES
   ======================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }

/* Wrapper genérico para páginas especiales */
.page-wrapper {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--container-padding);
    min-height: 60vh;
}

/* ========================================
   ANIMACIONES Y EFECTOS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scroll offset para header sticky */
html {
    scroll-padding-top: 100px;
}

/* Focus visible para accesibilidad */
*:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ========================================
   VIDEO SECTION
   ======================================== */
.video-section {
    margin: var(--space-xl) auto;
    max-width: var(--max-width-content);
    padding: 0;
}

.video-section .container {
    padding: 0;
}

.video-hero {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: block;
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .header,
    .footer,
    .btn,
    .hamburger,
    .mobile-menu,
    .video-section {
        display: none;
    }
}