/* ========================================
   NUBENERGY - Eficiencia Energética
   Reformas en Calor y Frío
   ======================================== */

:root {
    --primary: #1B5E20;
    --primary-light: #4CAF50;
    --secondary: #0D47A1;
    --accent: #FF6D00;
    --accent-light: #FF9E40;
    --dark: #1a1a2e;
    --text: #333;
    --text-light: #666;
    --light: #f8f9fa;
    --white: #fff;
    --gradient-warm: linear-gradient(135deg, #FF6D00 0%, #FF9E40 100%);
    --gradient-cool: linear-gradient(135deg, #0D47A1 0%, #1976D2 100%);
    --gradient-green: linear-gradient(135deg, #1B5E20 0%, #4CAF50 100%);
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Montserrat', sans-serif;
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ========== NAVEGACIÓN ========== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.main-nav.scrolled {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo img {
    height: 40px;
    transition: var(--transition);
}

.main-nav:not(.scrolled) .nav-logo img {
    filter: brightness(0) invert(1);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--white);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.main-nav.scrolled .nav-links a {
    color: var(--dark);
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.main-nav.scrolled .mobile-menu-btn span {
    background: var(--dark);
}

/* ========== HERO ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-video video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(27,94,32,0.85) 0%, rgba(13,71,161,0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    padding: 20px;
    max-width: 900px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-claim {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-light);
}

.stat-text {
    font-size: 0.85rem;
    opacity: 0.9;
    max-width: 120px;
    display: block;
}

.hero-logo {
    position: absolute;
    bottom: 30px;
    right: 30px;
    z-index: 2;
}

.hero-logo img {
    height: 60px;
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

/* ========== BOTONES ========== */
.btn-primary {
    display: inline-block;
    padding: 16px 36px;
    background: var(--gradient-warm);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255,109,0,0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(255,109,0,0.5);
}

.btn-secondary {
    display: inline-block;
    padding: 14px 32px;
    background: transparent;
    color: var(--primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid var(--primary);
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-small {
    padding: 10px 20px;
    font-size: 0.9rem;
    border-radius: 25px;
    background: var(--primary);
    color: var(--white);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

/* ========== SECCIÓN URGENCIA ========== */
.urgencia-section {
    background: linear-gradient(90deg, #FFF3E0 0%, #FFECB3 100%);
    padding: 30px 0;
}

.urgencia-box {
    display: flex;
    align-items: center;
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.urgencia-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    color: var(--accent);
}

.urgencia-icon svg {
    width: 100%;
    height: 100%;
}

.urgencia-content h2 {
    font-size: 1.2rem;
    color: var(--accent);
    margin-bottom: 5px;
}

.urgencia-content p {
    font-size: 0.95rem;
    color: var(--text);
    margin: 0;
}

/* ========== SECCIONES GENERALES ========== */
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
    color: var(--dark);
}

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

/* ========== PILARES / SOLUCIONES ========== */
.soluciones-section {
    padding: 80px 0;
    background: var(--light);
}

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

.pilar-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

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

.pilar-destacado {
    border: 3px solid var(--accent);
    transform: scale(1.05);
}

.pilar-destacado:hover {
    transform: scale(1.05) translateY(-10px);
}

.pilar-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-warm);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pilar-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.pilar-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    color: var(--primary);
}

.pilar-icon svg {
    width: 100%;
    height: 100%;
}

.pilar-card h3 {
    font-size: 1.4rem;
    color: var(--dark);
    margin-bottom: 5px;
}

.pilar-subtitle {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 20px;
}

.pilar-features {
    list-style: none;
    text-align: left;
    margin-bottom: 20px;
}

.pilar-features li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--text-light);
}

.pilar-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-light);
    font-weight: bold;
}

.pilar-result {
    background: var(--light);
    padding: 15px;
    border-radius: 8px;
    font-size: 0.95rem;
}

/* ========== SUNTHALPY ========== */
.sunthalpy-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--white) 0%, #E3F2FD 100%);
}

.sunthalpy-header {
    text-align: center;
    margin-bottom: 50px;
}

.sunthalpy-header h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--secondary);
    margin-bottom: 10px;
}

.sunthalpy-tagline {
    font-size: 1.2rem;
    color: var(--text-light);
}

.sunthalpy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.sunthalpy-principle {
    background: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.sunthalpy-principle h3 {
    color: var(--secondary);
    margin-bottom: 15px;
}

.sunthalpy-principle p {
    margin-bottom: 15px;
    color: var(--text);
}

.sunthalpy-temps {
    display: flex;
    gap: 20px;
}

.temp-card {
    flex: 1;
    padding: 25px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 15px;
}

.temp-calor {
    background: linear-gradient(135deg, #FFF3E0 0%, #FFCCBC 100%);
}

.temp-frio {
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 100%);
}

.temp-icon {
    font-size: 2.5rem;
}

.temp-info {
    display: flex;
    flex-direction: column;
}

.temp-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

.temp-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.temp-compare {
    font-size: 0.75rem;
    color: var(--text-light);
}

.sunthalpy-benefits {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.benefit-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.benefit-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.benefit-icon {
    width: 50px;
    height: 50px;
    flex-shrink: 0;
    background: var(--gradient-cool);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.benefit-icon svg {
    width: 24px;
    height: 24px;
}

.benefit-item h4 {
    color: var(--dark);
    margin-bottom: 5px;
}

.benefit-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.sunthalpy-cta {
    text-align: center;
    margin-top: 50px;
    padding: 30px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.sunthalpy-cta p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

/* ========== PANELES SOLARES ========== */
.paneles-section {
    padding: 80px 0;
    background: var(--white);
}

.paneles-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.paneles-info h2 {
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    color: var(--dark);
    margin-bottom: 15px;
}

.paneles-intro {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.paneles-specs {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
}

.spec {
    text-align: center;
    padding: 20px;
    background: var(--light);
    border-radius: var(--radius);
    flex: 1;
}

.spec-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.spec-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

.paneles-features {
    list-style: none;
}

.paneles-features li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    border-bottom: 1px solid var(--light);
}

.paneles-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.paneles-image {
    text-align: center;
}

.paneles-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

/* ========== PAQUETES ========== */
.paquetes-section {
    padding: 80px 0;
    background: var(--light);
}

.paquetes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.paquete-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

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

.paquete-destacado {
    border: 3px solid var(--primary);
    transform: scale(1.05);
}

.paquete-destacado:hover {
    transform: scale(1.05) translateY(-10px);
}

.paquete-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-green);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.paquete-header h3 {
    font-size: 1.5rem;
    color: var(--dark);
    margin-bottom: 5px;
}

.paquete-nombre {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 20px;
}

.paquete-objetivo {
    background: var(--light);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 25px;
}

.paquete-objetivo span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
}

.paquete-objetivo strong {
    font-size: 1.8rem;
    color: var(--primary);
}

.paquete-incluye {
    list-style: none;
    text-align: left;
    margin-bottom: 25px;
}

.paquete-incluye li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    border-bottom: 1px solid var(--light);
    font-size: 0.95rem;
}

.paquete-incluye li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-light);
}

.paquetes-nota {
    text-align: center;
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* ========== CONTACTO ========== */
.contacto-section {
    padding: 80px 0;
    background: linear-gradient(180deg, #E8F5E9 0%, var(--white) 100%);
}

.contacto-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contacto-info h2 {
    font-size: clamp(1.8rem, 4vw, 2.2rem);
    color: var(--dark);
    margin-bottom: 15px;
}

.contacto-info > p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contacto-datos {
    margin-bottom: 30px;
}

.contacto-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid var(--light);
}

.contacto-item svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

.contacto-mapa img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.contacto-form-wrapper {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.contacto-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--light);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

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

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.form-check input[type="checkbox"] {
    width: auto;
    margin-top: 3px;
}

.form-check label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.form-check a {
    color: var(--primary);
}

.btn-submit {
    width: 100%;
    padding: 18px;
    font-size: 1.1rem;
}

/* ========== FOOTER ========== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 50px;
    filter: brightness(0) invert(1);
    margin-bottom: 15px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    max-width: 300px;
}

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    padding: 8px 0;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
}

/* ========== MODAL ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
}

.modal-content h3 {
    margin-bottom: 20px;
    color: var(--dark);
}

/* ========== COOKIE NOTICE ========== */
.cookie-notice {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--dark);
    color: var(--white);
    padding: 20px;
    z-index: 1500;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cookie-notice p {
    margin: 0;
    font-size: 0.9rem;
}

.cookie-notice a {
    color: var(--accent-light);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 992px) {
    .pilares-grid,
    .paquetes-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .pilar-destacado,
    .paquete-destacado {
        transform: none;
    }
    
    .pilar-destacado:hover,
    .paquete-destacado:hover {
        transform: translateY(-10px);
    }
    
    .sunthalpy-grid,
    .paneles-content,
    .contacto-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a {
        color: var(--dark) !important;
        padding: 10px 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero-stats {
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .urgencia-box {
        flex-direction: column;
        text-align: center;
    }
    
    .sunthalpy-temps {
        flex-direction: column;
    }
    
    .paneles-specs {
        flex-direction: column;
    }
    
    .contacto-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .contacto-form-wrapper {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-claim {
        font-size: 1rem;
    }
    
    .btn-primary {
        padding: 14px 28px;
        font-size: 0.95rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
}