/* ==========================================================================
   Un Día Perfecto - Landing Page Styles
   ========================================================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #1a73e8;
    --color-primary-dark: #1557b0;
    --color-primary-light: #4a90e8;
    --color-secondary: #2c3e50;
    --color-accent: #25d366;
    --color-accent-hover: #128c7e;
    
    --color-dark: #1a1f2e;
    --color-dark-alt: #252d3d;
    --color-dark-light: #3a4556;
    
    --color-light: #ffffff;
    --color-light-alt: #f5f7fa;
    --color-gray: #6c757d;
    --color-gray-light: #adb5bd;
    
    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
    letter-spacing: 2px;
}

.section-title--light {
    color: var(--color-light);
}

.section-description {
    text-align: center;
    color: var(--color-gray-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-light);
}

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

.btn--whatsapp {
    background: var(--color-accent);
    color: var(--color-light);
}

.btn--whatsapp:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
    padding: var(--spacing-md) 0;
    transition: background var(--transition-normal);
}

.header.scrolled {
    background: rgba(26, 31, 46, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.logo-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2rem);
    color: var(--color-light);
    letter-spacing: 3px;
    line-height: 1;
}

.logo-tagline {
    font-size: 0.85rem;
    color: var(--color-gray-light);
    letter-spacing: 1px;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-light);
    font-weight: 600;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding: var(--spacing-xs) 0;
}

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

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

.nav-link--cta {
    background: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
}

.nav-link--cta::after {
    display: none;
}

.nav-link--cta:hover {
    background: var(--color-primary-dark);
}

/* ==========================================================================
   Hero Carousel
   ========================================================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.carousel {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slides {
    position: relative;
    width: 100%;
    height: 100%;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.carousel-slide.active {
    opacity: 1;
}

.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.4) 0%,
        rgba(0, 0, 0, 0.2) 50%,
        rgba(0, 0, 0, 0.5) 100%
    );
}

.carousel-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    width: 90%;
    max-width: 800px;
}

.carousel-text-box {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-left: 4px solid var(--color-primary);
    border-right: 4px solid var(--color-primary);
    padding: var(--spacing-xl) var(--spacing-lg);
}

.carousel-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 6vw, 4rem);
    color: var(--color-light);
    letter-spacing: 4px;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.carousel-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.4rem);
    color: var(--color-gray-light);
    letter-spacing: 2px;
}

/* Carousel Controls */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    color: var(--color-light);
    font-size: 1.2rem;
    transition: all var(--transition-normal);
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.carousel-btn--prev {
    left: var(--spacing-md);
}

.carousel-btn--next {
    right: var(--spacing-md);
}

/* Carousel Indicators */
.carousel-indicators {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.carousel-indicator.active,
.carousel-indicator:hover {
    background: var(--color-primary);
    border-color: var(--color-light);
}

/* Hero CTA */
.hero-cta {
    position: absolute;
    bottom: var(--spacing-xl);
    right: var(--spacing-lg);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-primary);
    color: var(--color-light);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    z-index: 10;
    transition: all var(--transition-normal);
    animation: pulse 2s infinite;
}

.hero-cta:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
    animation: none;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(26, 115, 232, 0);
    }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about {
    padding: var(--spacing-xxl) 0;
    background: var(--color-light-alt);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray);
    font-size: 1.1rem;
}

.about-text strong {
    color: var(--color-dark);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.feature {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

.feature i {
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.feature h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.feature p {
    font-size: 0.9rem;
    color: var(--color-gray);
}

.about .btn {
    display: block;
    width: fit-content;
    margin: 0 auto;
}

/* ==========================================================================
   Demos Section
   ========================================================================== */
.demos {
    padding: var(--spacing-xxl) 0;
    background: var(--color-dark);
}

.demos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.demo-card {
    background: var(--color-dark-alt);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.demo-image {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.demo-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.demo-card:hover .demo-image img {
    transform: scale(1.1);
}

.demo-content {
    padding: var(--spacing-md);
}

.demo-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--color-light);
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.demo-description {
    color: var(--color-gray-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
}

.demo-audio {
    width: 100%;
    height: 40px;
    border-radius: var(--radius-sm);
}

/* Custom Audio Player Styling */
.demo-audio::-webkit-media-controls-panel {
    background: var(--color-dark-light);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-dark) 100%);
}

.cta-box {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--color-light);
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
}

.cta-text {
    color: var(--color-gray-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: var(--color-dark);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    border-top: 1px solid var(--color-dark-light);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--color-light);
    letter-spacing: 2px;
}

.footer-tagline {
    color: var(--color-gray-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    color: var(--color-gray);
    font-size: 0.95rem;
}

.footer-links h3,
.footer-contact h3,
.footer-social h3 {
    color: var(--color-light);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.footer-links a,
.footer-contact a {
    display: block;
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--color-primary);
}

.footer-contact a i {
    margin-right: var(--spacing-xs);
    width: 20px;
}

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-dark-alt);
    border-radius: var(--radius-full);
    color: var(--color-light);
    font-size: 1.1rem;
    transition: all var(--transition-normal);
}

.social-icons a:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-dark-light);
    color: var(--color-gray);
    font-size: 0.9rem;
}

/* ==========================================================================
   WhatsApp Float Button
   ========================================================================== */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-light);
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.whatsapp-float:hover {
    background: var(--color-accent-hover);
    transform: scale(1.1);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    transform: translateY(-50%) translateX(-10px);
}

.whatsapp-tooltip {
    position: absolute;
    right: 100%;
    top: 50%;
    transform: translateY(-50%) translateX(0);
    background: var(--color-dark);
    color: var(--color-light);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    transition: all var(--transition-normal);
    pointer-events: none;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablets */
@media (max-width: 991px) {
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .hero-cta {
        bottom: calc(var(--spacing-xl) + 40px);
        right: 50%;
        transform: translateX(50%);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .header {
        padding: var(--spacing-sm) 0;
    }
    
    .header-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .logo {
        text-align: center;
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .nav-link--cta {
        order: -1;
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-xs);
    }
    
    .hero {
        min-height: 100vh;
    }
    
    .carousel-text-box {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .carousel-btn {
        display: none;
    }
    
    .hero-cta {
        bottom: var(--spacing-lg);
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .about-content {
        text-align: center;
    }
    
    .demos-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .footer-content {
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .whatsapp-float {
        width: 55px;
        height: 55px;
        font-size: 1.8rem;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .whatsapp-tooltip {
        display: none;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-xxl: 3rem;
    }
    
    .logo-text {
        font-size: 1.3rem;
    }
    
    .carousel-title {
        font-size: 1.6rem;
    }
    
    .carousel-subtitle {
        font-size: 0.95rem;
    }
    
    .demo-image {
        height: 150px;
    }
}

/* ==========================================================================
   Placeholder Images (remove in production)
   ========================================================================== */
.carousel-slide {
    background-color: var(--color-dark-alt);
}

.demo-image {
    background: linear-gradient(135deg, var(--color-dark-light) 0%, var(--color-dark-alt) 100%);
}

/* Placeholder styling for missing images */
.demo-image img[src*="demo-"] {
    background: var(--color-dark-light);
}