/* =============================================================================
   KONTROL WEBSITE STYLES
   Siguiendo la paleta de colores y estilo Dark Modern Professional
   ============================================================================= */

/* Reset y Variables CSS */
:root {
    /* Paleta de Colores de Kontrol */
    /* Fondos (Dark Theme) */
    --bg-primary: #1a1d23;      /* Gris oscuro profundo */
    --bg-secondary: #252932;    /* Gris medio oscuro */
    --bg-tertiary: #2f3349;     /* Gris azulado */
    --bg-surface: #353a50;      /* Gris azul claro */
    
    /* Texto */
    --text-primary: #e8eaed;    /* Blanco suave */
    --text-secondary: #bdc1c6;  /* Gris claro */
    --text-tertiary: #9aa0a6;   /* Gris medio */
    
    /* Acentos (Colores de acción) */
    --accent-primary: #4285f4;  /* Azul Google */
    --accent-success: #34a853;  /* Verde Google */
    --accent-warning: #fbbc04;  /* Amarillo Google */
    --accent-error: #ea4335;    /* Rojo Google */
    --accent-info: #17a2b8;     /* Azul cyan */
    
    /* Bordes */
    --border-primary: #3c4043;
    --border-secondary: #5f6368;
    
    /* Radio de bordes */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Espaciado */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    
    /* Tipografía */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;    /* 12px */
    --text-sm: 0.875rem;   /* 14px */
    --text-base: 1rem;     /* 16px */
    --text-lg: 1.125rem;   /* 18px */
    --text-xl: 1.25rem;    /* 20px */
    --text-2xl: 1.5rem;    /* 24px */
    --text-3xl: 1.875rem;  /* 30px */
    --text-4xl: 2.25rem;   /* 36px */
    --text-5xl: 3rem;      /* 48px */
    
    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

html {
    /* Removemos scroll-behavior para usar JavaScript personalizado */
    scroll-behavior: auto;
}

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

/* Secciones principales */
section {
    position: relative;
    scroll-margin-top: 20px; /* Reducido proporcionalmente de 40px a 20px */
}

/* Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

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

.section-title {
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* =============================================================================
   HEADER & NAVIGATION
   ============================================================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 29, 35, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav {
    padding: var(--space-md) 0;
}

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

/* Logo en navegación */
.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
}

.nav-link::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(77, 171, 247, 0.05);
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: var(--radius-sm);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-primary);
    transform: translateY(-1px);
}

.nav-link:hover::after,
.nav-link.active::after {
    opacity: 1;
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 70%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: var(--space-xs);
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

/* =============================================================================
   HERO SECTION
   ============================================================================= */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
    display: flex;
    align-items: center;
    padding-top: var(--space-4xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(66, 133, 244, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(52, 168, 83, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.highlight {
    color: var(--accent-primary);
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-success) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--accent-success);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* App Mockup */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.app-mockup {
    width: 100%;
    max-width: 400px;
    perspective: 1000px;
}

.mockup-screen {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: var(--transition-normal);
}

.mockup-screen:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.mockup-header {
    background: var(--bg-tertiary);
    padding: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    border-bottom: 1px solid var(--border-primary);
}

.mockup-controls {
    display: flex;
    gap: var(--space-sm);
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.error { background: var(--accent-error); }
.control.warning { background: var(--accent-warning); }
.control.success { background: var(--accent-success); }

.mockup-title {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.mockup-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Mockup de inventario */
.inventory-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-primary);
}

.inventory-header h4 {
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.inventory-count {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.product-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
    margin-bottom: var(--space-sm);
}

.product-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-grow: 1;
}

.product-image {
    width: 32px;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-base);
}

.product-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.product-name {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.product-stock {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.product-stock.low-stock {
    color: var(--accent-warning);
    font-weight: var(--font-weight-medium);
}

.product-status {
    font-size: var(--text-xs);
    font-weight: var(--font-weight-medium);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.product-status.success {
    background: rgba(52, 168, 83, 0.1);
    color: var(--accent-success);
    border: 1px solid rgba(52, 168, 83, 0.2);
}

.product-status.warning {
    background: rgba(251, 188, 4, 0.1);
    color: var(--accent-warning);
    border: 1px solid rgba(251, 188, 4, 0.2);
}

.summary-bar {
    margin-top: var(--space-lg);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
    display: flex;
    justify-content: space-between;
}

.summary-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.summary-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.summary-value {
    font-size: var(--text-base);
    font-weight: var(--font-weight-bold);
    color: var(--accent-primary);
}

/* =============================================================================
   FEATURES SECTION
   ============================================================================= */
.features {
    padding: var(--space-4xl) 0;
    background: var(--bg-secondary);
}

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

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1200px) {
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-card {
    background: var(--bg-surface);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-success));
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    position: relative;
}

.feature-icon.primary {
    background: rgba(66, 133, 244, 0.1);
    color: var(--accent-primary);
}

.feature-icon.success {
    background: rgba(52, 168, 83, 0.1);
    color: var(--accent-success);
}

.feature-icon.warning {
    background: rgba(251, 188, 4, 0.1);
    color: var(--accent-warning);
}

.feature-icon.info {
    background: rgba(23, 162, 184, 0.1);
    color: var(--accent-info);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* =============================================================================
   DOWNLOAD SECTION
   ============================================================================= */
.download {
    padding: var(--space-4xl) 0;
    background: var(--bg-primary);
}

.download-content {
    text-align: center;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-3xl);
}

.download-card {
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    pointer-events: auto;
    cursor: pointer;
}

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

.download-card.main-download {
    border: 2px solid var(--accent-primary);
    position: relative;
}

.download-card.main-download::before {
    content: 'Recomendado';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-primary);
    color: white;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: var(--font-weight-medium);
}

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

.download-info {
    text-align: center;
    width: 100%;
}

.download-info h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.download-info p {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.download-size {
    background: var(--bg-tertiary);
    color: var(--text-tertiary);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    display: inline-block;
    margin-bottom: var(--space-md);
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

.download-features span {
    font-size: var(--text-xs);
    color: var(--accent-success);
    text-align: center;
}

/* Asegurar que los clics pasen al enlace padre */
.download-card * {
    pointer-events: none;
}

.system-requirements, .download-details {
    margin-top: var(--space-xl);
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
}

.system-requirements h3, .download-details h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.system-requirements ul, .download-details ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-sm);
}

.system-requirements li, .download-details li {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    padding: var(--space-sm);
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
}

.download-note {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: rgba(77, 171, 247, 0.1);
    border: 1px solid rgba(77, 171, 247, 0.3);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.download-note a {
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.download-note a:hover {
    opacity: 0.8;
}

/* =============================================================================
   MANUAL INFO SECTION
   ============================================================================= */
.manual-info {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--bg-surface), var(--bg-secondary));
    border-top: 1px solid var(--border-primary);
    border-bottom: 1px solid var(--border-primary);
}

.manual-content {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.manual-icon {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.manual-text h3 {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.manual-text p {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.manual-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .manual-content {
        flex-direction: column;
        text-align: center;
    }
    
    .manual-features {
        grid-template-columns: 1fr;
    }
}

/* =============================================================================
   ABOUT SECTION
   ============================================================================= */
.about {
    padding: var(--space-4xl) 0;
    background: var(--bg-secondary);
}

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

.about-text {
    max-width: 600px;
}

.about-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

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

.stat {
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
}

.stat-number {
    display: block;
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--accent-primary);
    margin-bottom: var(--space-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.about-image {
    display: flex;
    justify-content: center;
}

.feature-showcase {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: 400px;
}

.showcase-item {
    background: var(--bg-surface);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
    transition: var(--transition-normal);
}

.showcase-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.showcase-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
}

.showcase-icon.primary { background: rgba(66, 133, 244, 0.1); }
.showcase-icon.success { background: rgba(52, 168, 83, 0.1); }
.showcase-icon.info { background: rgba(23, 162, 184, 0.1); }
.showcase-icon.warning { background: rgba(251, 188, 4, 0.1); }

.showcase-item span {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
}

/* =============================================================================
   CONTACT SECTION
   ============================================================================= */
.contact {
    padding: var(--space-4xl) 0;
    background: var(--bg-primary);
}

.contact-content {
    text-align: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-3xl);
}

.contact-item {
    background: var(--bg-secondary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    transition: var(--transition-normal);
}

.contact-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-icon.primary {
    background: rgba(66, 133, 244, 0.1);
    color: var(--accent-primary);
}

.contact-icon.success {
    background: rgba(52, 168, 83, 0.1);
    color: var(--accent-success);
}

.contact-icon.info {
    background: rgba(23, 162, 184, 0.1);
    color: var(--accent-info);
}

.contact-info {
    text-align: center;
}

.contact-info h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.contact-info p {
    color: var(--text-secondary);
}

/* =============================================================================
   FOOTER
   ============================================================================= */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

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

.footer-title {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    color: var(--accent-primary);
}

.footer-subtitle {
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.footer-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-primary);
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--text-sm);
}

/* =============================================================================
   RESPONSIVE DESIGN
   ============================================================================= */

/* Estilos para navegación móvil */
@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        border-top: 1px solid var(--border-primary);
        border-bottom: 1px solid var(--border-primary);
        padding: var(--space-lg);
        flex-direction: column;
        gap: var(--space-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* Prevenir scroll cuando el menú está abierto */
    body.menu-open {
        overflow: hidden;
    }
    
    /* Hero */
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-2xl);
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    /* About */
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    /* Feature showcase */
    .feature-showcase {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-title {
        font-size: var(--text-3xl);
    }
    
    .section-title {
        font-size: var(--text-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        max-width: 280px;
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.app-mockup {
    animation: float 6s ease-in-out infinite;
}

/* Scroll reveal animation */
.feature-card,
.download-card,
.contact-item {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

/* Smooth scrolling para navegación */
html {
    scroll-behavior: smooth;
}

/* Estados de focus para accesibilidad */
.btn:focus,
.nav-link:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Mejoras de performance */
.mockup-screen,
.feature-card,
.download-card {
    will-change: transform;
}

/* Dark theme enhancement */
::selection {
    background: var(--accent-primary);
    color: var(--text-primary);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-secondary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* =============================================================================
   NOTIFICACIONES Y EFECTOS ESPECIALES
   ============================================================================= */

/* Notificaciones */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateX(400px);
    transition: transform var(--transition-normal);
    max-width: 300px;
}

.notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.notification-message {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
}

.notification-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: var(--text-lg);
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.notification-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.notification-success {
    border-left: 4px solid var(--accent-success);
}

.notification-error {
    border-left: 4px solid var(--accent-error);
}

.notification-warning {
    border-left: 4px solid var(--accent-warning);
}

.notification-info {
    border-left: 4px solid var(--accent-info);
}

/* Clase para navegación activa */
.nav-link.active {
    color: var(--accent-primary);
    background: rgba(66, 133, 244, 0.1);
}

/* Efectos para dispositivos táctiles */
.touch-device .feature-card:hover,
.touch-device .download-card:hover,
.touch-device .contact-item:hover {
    transform: none;
}

.touch-hover {
    transform: translateY(-2px) !important;
    box-shadow: var(--shadow-md) !important;
}

/* Modo desarrollador (Easter egg) */
.developer-mode {
    position: relative;
}

.developer-mode::before {
    content: '🚀 MODO DESARROLLADOR ACTIVADO';
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--accent-success);
    color: white;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    z-index: 10000;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Preloader (opcional) */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10001;
    transition: opacity var(--transition-normal);
}

.preloader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-primary);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}