/* =============================================
   KARRITO — CSS Reset & Variables
   ============================================= */

:root {
    /* Colors */
    --color-primary: #46bab7;
    --color-primary-dark: #3a9e9b;
    --color-primary-light: #5fd0cd;
    --color-accent: #f16fa8;
    --color-accent-dark: #e05a96;
    --color-text: #2D3436;
    --color-text-light: #636e72;
    --color-text-muted: #b2bec3;
    --color-bg: #FAFAFA;
    --color-white: #FFFFFF;
    --color-border: #e0e0e0;
    --color-success: #00b894;
    --color-whatsapp: #25D366;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --navbar-height: 70px;

    /* Borders */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 15px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.text-accent {
    color: var(--color-primary);
}

.text-pink {
    color: var(--color-accent);
}

/* =============================================
   KARRITO — Buttons
   ============================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    box-shadow: 0 4px 20px rgba(70, 186, 183, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(70, 186, 183, 0.4);
}

.btn--full {
    width: 100%;
}

/* =============================================
   KARRITO — Navbar
   ============================================= */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

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

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.navbar__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.logo-icon {
    font-size: 1.5em;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    z-index: 1001;
}

.hamburger {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    position: relative;
    transition: background var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    bottom: -7px;
}

.navbar__toggle.active .hamburger {
    background: transparent;
}

.navbar__toggle.active .hamburger::before {
    transform: translateY(7px) rotate(45deg);
}

.navbar__toggle.active .hamburger::after {
    transform: translateY(-7px) rotate(-45deg);
}

.navbar__menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 999;
}

.navbar__menu.active {
    opacity: 1;
    visibility: visible;
}

.navbar__link {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-text);
    transition: color var(--transition-fast);
}

.navbar__link:hover {
    color: var(--color-primary);
}

/* =============================================
   KARRITO — Hero
   ============================================= */

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--navbar-height);
    position: relative;
    overflow: hidden;
}

.hero__content {
    padding: var(--space-3xl) 0;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.hero__title .text-accent {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

.hero__cta {
    font-size: var(--font-size-lg);
    padding: 1rem 2.5rem;
}

.hero__visual {
    position: absolute;
    top: 50%;
    right: -200px;
    transform: translateY(-50%);
    z-index: 1;
    opacity: 0.1;
}

.hero__shape {
    width: 500px;
    height: 500px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

/* =============================================
   KARRITO — Section Headers
   ============================================= */

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

/* =============================================
   KARRITO — Productos
   ============================================= */

.productos {
    padding: var(--space-4xl) 0;
}

.productos__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
    text-align: center;
}

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

.product-card__icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.product-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.product-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.product-card__link {
    display: inline-block;
    font-weight: 600;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.product-card__link:hover {
    color: var(--color-primary-dark);
}

/* =============================================
   KARRITO — Personalización (Pasos)
   ============================================= */

.personalizacion {
    padding: var(--space-4xl) 0;
    background: var(--color-white);
}

.pasos {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.paso {
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 350px;
    position: relative;
    transition: transform var(--transition-base);
}

.paso:hover {
    transform: translateY(-4px);
}

.paso__number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.paso__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.paso__desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
}

.paso__connector {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
    border-radius: 2px;
}

/* =============================================
   KARRITO — Nosotros
   ============================================= */

.nosotros {
    padding: var(--space-4xl) 0;
}

.nosotros__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.nosotros__content .section-title {
    text-align: left;
}

.nosotros__text {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.nosotros__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.stat__label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nosotros__image-placeholder {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-lg);
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
    color: var(--color-white);
}

.nosotros__image-placeholder span {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--space-md);
}

.nosotros__image-placeholder p {
    font-size: var(--font-size-lg);
    font-weight: 500;
}

/* =============================================
   KARRITO — Contacto
   ============================================= */

.contacto {
    padding: var(--space-4xl) 0;
    background: var(--color-white);
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

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

.form-group input,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(70, 186, 183, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #e74c3c;
}

.form-group .error-message {
    font-size: var(--font-size-xs);
    color: #e74c3c;
    margin-top: var(--space-xs);
    display: none;
}

.form-group.error .error-message {
    display: block;
}

/* =============================================
   KARRITO — Footer
   ============================================= */

.footer {
    background: var(--color-text);
    color: var(--color-white);
    padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
}

.footer__brand .navbar__logo {
    margin-bottom: var(--space-sm);
}

.footer__brand .logo-text {
    -webkit-text-fill-color: white;
}

.footer__tagline {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.footer__links {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.footer__col h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.footer__col a {
    display: block;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
    transition: color var(--transition-fast);
}

.footer__col a:hover {
    color: var(--color-white);
}

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-xl);
    margin-top: var(--space-xl);
    text-align: center;
}

.footer__bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* =============================================
   KARRITO — WhatsApp Chat Box
   ============================================= */

.wa-chat {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    font-family: var(--font-family);
}

.wa-chat__toggle {
    width: 60px;
    height: 60px;
    border: none;
    border-radius: var(--radius-full);
    background: var(--color-whatsapp);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: all var(--transition-base);
    animation: whatsappPulse 2s infinite;
}

.wa-chat__toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(37, 211, 102, 0.5);
}

@keyframes whatsappPulse {
    0% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6); }
    100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
}

.wa-chat__popup {
    position: absolute;
    bottom: 76px;
    right: 0;
    width: 340px;
    max-width: calc(100vw - 48px);
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    animation: waSlideUp 0.3s ease;
}

@keyframes waSlideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.wa-chat__header {
    background: linear-gradient(135deg, var(--color-primary), #2c8f8a);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.wa-chat__avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    object-fit: cover;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.wa-chat__info {
    display: flex;
    flex-direction: column;
}

.wa-chat__name {
    color: #fff;
    font-weight: 700;
    font-size: 16px;
}

.wa-chat__status {
    color: rgba(255, 255, 255, 0.85);
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.wa-chat__dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: #4ade80;
    display: inline-block;
}

.wa-chat__body {
    padding: 16px;
    background: #e5ddd5;
    min-height: 100px;
}

.wa-chat__bubble {
    background: #fff;
    padding: 12px 14px;
    border-radius: 12px;
    border-top-left-radius: 4px;
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-text);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.wa-chat__footer {
    padding: 14px 16px;
    background: #f0f2f5;
    display: flex;
    justify-content: center;
}

.wa-chat__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-whatsapp);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    padding: 12px 22px;
    border-radius: 999px;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
}

.wa-chat__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
    color: #fff;
}

/* =============================================
   KARRITO — Responsive: Tablet (768px+)
   ============================================= */

@media (min-width: 768px) {
    .hero__title {
        font-size: var(--font-size-4xl);
    }

    .hero__subtitle {
        font-size: var(--font-size-xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

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

    .pasos {
        flex-direction: row;
        justify-content: center;
        align-items: flex-start;
    }

    .paso__connector {
        width: 60px;
        height: 2px;
        margin-top: 60px;
    }

    .footer__inner {
        grid-template-columns: 1fr 2fr;
    }

    .footer__links {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* =============================================
   KARRITO — Responsive: Desktop (1024px+)
   ============================================= */

@media (min-width: 1024px) {
    .navbar__toggle {
        display: none;
    }

    .navbar__menu {
        position: static;
        opacity: 1;
        visibility: visible;
        background: transparent;
        backdrop-filter: none;
        flex-direction: row;
        gap: var(--space-xl);
    }

    .navbar__link {
        font-size: var(--font-size-sm);
        font-weight: 500;
        position: relative;
    }

    .navbar__link::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--color-primary);
        transition: width var(--transition-base);
    }

    .navbar__link:hover::after {
        width: 100%;
    }

    .hero__title {
        font-size: var(--font-size-5xl);
    }

    .hero__visual {
        opacity: 0.15;
        right: -100px;
    }

    .hero__shape {
        width: 600px;
        height: 600px;
    }

    .productos__grid {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .nosotros__content .section-title {
        font-size: var(--font-size-3xl);
    }

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

    .contact-form .btn {
        grid-column: 1 / -1;
    }

    .footer__inner {
        grid-template-columns: 1fr 2fr;
    }
}

/* =============================================
   KARRITO — Responsive: Large (1920px+)
   ============================================= */

@media (min-width: 1920px) {
    :root {
        --max-width: 1400px;
    }

    .hero__title {
        font-size: 4rem;
    }

    .hero__shape {
        width: 800px;
        height: 800px;
    }

    .product-card {
        padding: var(--space-3xl);
    }
}

/* =============================================
   KARRITO — Animations
   ============================================= */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Nota plegables */
.productos__note {
  margin-top: 32px;
  padding: 14px 20px;
  background: linear-gradient(135deg, rgba(70, 186, 183, 0.12), rgba(241, 111, 168, 0.12));
  border: 1px solid rgba(70, 186, 183, 0.35);
  border-radius: 12px;
  text-align: center;
  font-size: 15px;
  color: var(--color-text, #2D3436);
}
.productos__note strong { color: var(--color-primary, #46bab7); }

/* Nota pasos */
.pasos__note {
  margin-top: 28px;
  padding: 12px 20px;
  background: rgba(241, 111, 168, 0.1);
  border: 1px solid rgba(241, 111, 168, 0.35);
  border-radius: 12px;
  text-align: center;
  font-size: 14px;
  color: var(--color-text, #2D3436);
}
.pasos__note strong { color: var(--color-accent, #f16fa8); }