/* ============================================
   EXPO TECH 2026 - ESTILOS PRINCIPALES
   ============================================ */

/* ---------- Variables de colores ---------- */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #0f172a;
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-light: #f8fafc;
    --color-dark: #1e293b;
    --color-gray: #64748b;
    --color-white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--color-light);
    color: var(--color-dark);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---------- Botones ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 28px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    box-shadow: var(--shadow-xl);
    transform: translateY(-3px);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-success), #34d399);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669, var(--color-success));
    box-shadow: var(--shadow-xl);
    transform: translateY(-3px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.2rem;
    border-radius: var(--radius-xl);
}

.btn-form {
    width: 100%;
    padding: 16px;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
    margin-top: 10px;
}

/* ---------- Secciones ---------- */
.section-title {
    font-size: 2.5rem;
    color: var(--color-secondary);
    text-align: center;
    margin-bottom: 10px;
}

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

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-gray);
    text-align: center;
    margin-bottom: 50px;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-accent);
}

.logo-title {
    font-size: 1.6rem;
    color: var(--color-white);
    font-weight: 700;
    background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: url('https://storage.googleapis.com/ot-pt/code_agent/nano2_image_generator/2026-07-11/371584c9c786/expotech_hero.png?Expires=1786326800&GoogleAccessId=gcs-owner%40oreateai-434511.iam.gserviceaccount.com&Signature=Xpx3sX%2FJsGwhiHw3EeJteuj0w2%2B6MbOCiLXNsHkweONZR1kWdbPIikCSrvmZW6SIisYwF3rQGoTOxWx15ra2KgB0eM%2FDuiVAOePHqRGeyxtEKt1VV%2Fe%2F6pwFvyVze4ZsabLYYMYVOfp60xkLsTgrncMIIyDbd4I%2F%2F8w4NTA0Yw25fnzKmS6LMFmrhLY1%2FcbObOJh9sX5hwnunoxOQDC81k9lKWphnVGz9JBMD7b4TsKlEjqzMlDUIVB9xYzhIdtfcu4pBXAqCQwyXBrQyd9GeyTZ5DiNMr0Mk7ufdBS3ghRp5xiitIiBj958R2s1FNAxwVIneG0oOmRLrQzK0nLtvQ%3D%3D') center/cover no-repeat;
    margin-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85), rgba(37, 99, 235, 0.75));
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    color: var(--color-white);
    font-weight: 800;
    margin-bottom: 20px;
    text-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.hero-description {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 35px;
    line-height: 1.8;
}

/* ============================================
   PONENTES
   ============================================ */
.ponentes {
    padding: 100px 0;
    background: var(--color-white);
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-image {
    width: 100%;
    height: 280px;
    overflow: hidden;
}

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

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

.card-body {
    padding: 25px;
    text-align: center;
}

.card-name {
    font-size: 1.4rem;
    color: var(--color-secondary);
    margin-bottom: 8px;
}

.card-specialty {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: 15px;
}

.card-specialty i {
    margin-right: 6px;
}

.card-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.icon-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.1rem;
    transition: var(--transition);
    text-decoration: none;
}

.icon-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

/* ============================================
   INSCRIPCIÓN
   ============================================ */
.inscripcion {
    padding: 100px 0;
    background: linear-gradient(135deg, #f1f5f9, #e2e8f0);
}

.form-container {
    max-width: 550px;
    margin: 0 auto;
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-label i {
    color: var(--color-primary);
    margin-right: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-light);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}

.form-input::placeholder {
    color: #94a3b8;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-secondary);
    color: var(--color-white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--color-accent);
}

.footer-text {
    color: #cbd5e1;
    margin-bottom: 10px;
    font-size: 1rem;
}

.footer-text i {
    color: var(--color-accent);
    margin-right: 8px;
    width: 20px;
}

.social-icons {
    display: flex;
    gap: 12px;
}

.social-link {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.2rem;
    transition: var(--transition);
    text-decoration: none;
}

.social-link:hover {
    background: var(--color-accent);
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 8px 20px rgba(6, 182, 212, 0.4);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    color: #94a3b8;
    font-size: 0.95rem;
}

.footer-bottom i {
    color: var(--color-accent);
    margin-right: 5px;
}

/* ============================================
   ANIMACIONES
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   RESPONSIVE - TABLET
   ============================================ */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    .cards-container {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
}

/* ============================================
   RESPONSIVE - CELULAR
   ============================================ */
@media (max-width: 768px) {
    .header-content {
        height: 70px;
    }
    
    .logo-title {
        font-size: 1.3rem;
    }
    
    .logo-img {
        width: 40px;
        height: 40px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(15, 23, 42, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 20px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        font-size: 1.2rem;
        padding: 15px 30px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero {
        margin-top: 70px;
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .btn-large {
        padding: 14px 30px;
        font-size: 1rem;
    }
    
    .cards-container {
        grid-template-columns: 1fr;
    }
    
    .card-image {
        height: 240px;
    }
    
    .ponentes,
    .inscripcion {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .form-container {
        padding: 25px;
    }
    
    .footer {
        padding: 40px 0 15px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .hero-description {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
    }
    
    .card-name {
        font-size: 1.2rem;
    }
    
    .form-container {
        padding: 20px;
    }
    
    .btn-form {
        font-size: 1rem;
    }
    
    .social-icons {
        flex-wrap: wrap;
        justify-content: center;
    }
}