/* =========================
   VARIABLES & RESET
   ========================= */
:root {
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-card: rgba(30, 41, 59, 0.5);
    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-primary: #22d3ee;
    --color-secondary: #3b82f6;
    --color-accent: #a855f7;
    --color-border: #334155;
    
    --transition-speed: 0.3s;
    --border-radius: 0.75rem;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.3);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* =========================
   LOADER
   ========================= */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s, visibility 0.3s;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* =========================
   INSTALL BANNER (PWA)
   ========================= */
.install-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 1rem;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform 0.3s;
}

.install-banner:not(.hidden) {
    transform: translateY(0);
}

.install-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.install-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.install-btn {
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border: none;
    border-radius: 0.5rem;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.install-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.close-btn {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 0.5rem;
}

/* =========================
   NAVIGATION
   ========================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    transition: transform 0.3s;
}

.navbar.hidden {
    transform: translateY(-100%);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: white;
}

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

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-speed);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-speed);
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-speed);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* =========================
   SECTIONS
   ========================= */
.section {
    min-height: 100vh;
    padding: 6rem 1rem 4rem;
    display: flex;
    align-items: center;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 3rem;
}

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

/* Hero Section */
.hero-section {
    background: radial-gradient(ellipse at top, rgba(34, 211, 238, 0.1), transparent);
}

.hero-content {
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 48rem;
    margin: 0 auto 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* About Section (Misión y Visión) */
.about-section {
    background: var(--color-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.about-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    text-align: center;
    transition: all var(--transition-speed);
    animation: fadeInUp 0.6s ease-out backwards;
}

.about-card:nth-child(1) {
    animation-delay: 0.1s;
}

.about-card:nth-child(2) {
    animation-delay: 0.2s;
}

.about-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.about-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1.5rem;
    color: var(--color-primary);
    transition: transform var(--transition-speed);
}

.about-card:hover .about-icon {
    transform: scale(1.1);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.about-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* Services Section */
.services-section {
    background: var(--color-bg-card);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: all var(--transition-speed);
    animation: fadeInUp 0.6s ease-out backwards;
}

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.service-icon {
    width: 3rem;
    height: 3rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    transition: transform var(--transition-speed);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.service-card p {
    color: var(--color-text-secondary);
}

/* Contact Section */
.contact-section {
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
}

.contact-icon {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 0.25rem;
}

.contact-item h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.contact-item a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

.contact-item a:hover {
    color: var(--color-primary);
}

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

.social-links h3 {
    margin-bottom: 0.75rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-speed);
}

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

.social-icons svg {
    width: 1.5rem;
    height: 1.5rem;
}

.contact-form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 2rem;
}

.contact-form-wrapper h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-input {
    padding: 0.75rem 1rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    color: var(--color-text);
    font-family: inherit;
    transition: border-color var(--transition-speed);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-message {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

/* =========================
   BUTTONS
   ========================= */
.btn {
    padding: 0.75rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-speed);
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
}

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

.btn-secondary {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

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

.btn-full {
    width: 100%;
}

/* =========================
   FOOTER
   ========================= */
.footer {
    padding: 2rem 1rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    color: var(--color-text-secondary);
}

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

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

/* =========================
   UTILITIES
   ========================= */
.hidden {
    display: none !important;
}

/* =========================
   RESPONSIVE
   ========================= */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 4rem;
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-speed);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 0.75rem 0;
        display: block;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .section {
        padding: 5rem 1rem 3rem;
        min-height: auto;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}

/* =========================
   WHATSAPP FLOAT BUTTON
   ========================= */
.whatsapp-float {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25d366, #128c7e);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all 0.3s ease;
    text-decoration: none;
    cursor: pointer;
    animation: pulse-whatsapp 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
}

.whatsapp-tooltip {
    position: absolute;
    right: 70px;
    background: white;
    color: #333;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    white-space: nowrap;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid white;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    right: 75px;
}

@keyframes pulse-whatsapp {
    0%, 100% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.7);
    }
}

/* Responsive para WhatsApp */
@media (max-width: 768px) {
    .whatsapp-float {
        width: 55px;
        height: 55px;
        bottom: 20px;
        right: 20px;
    }
    
    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
    
    .whatsapp-tooltip {
        display: none; /* Ocultar tooltip en móvil */
    }
}