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

body {
    font-family: 'Inter', sans-serif;
    background-color: #161e29;
    color: #ffffff;
    line-height: 1.6;
}

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

/* Header */
.header {
    background-color: rgba(22, 30, 41, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand .logo {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: #3779e7;
}

.btn-login {
    background-color: #3779e7;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-login:hover {
    background-color: #2c5fb8;
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: linear-gradient(135deg, #161e29 0%, #1a2332 100%);
}

.hero-badge {
    display: inline-block;
    background-color: rgba(55, 121, 231, 0.1);
    color: #3779e7;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(55, 121, 231, 0.3);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #b0b8c4;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.highlight {
    color: #ff4444;
    position: relative;
}

.hero-description {
    font-size: 1.2rem;
    color: #b0b8c4;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn-primary {
    background-color: #3779e7;
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: #2c5fb8;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(55, 121, 231, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: #ffffff;
    padding: 1rem 2rem;
    border: 2px solid #3779e7;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: #3779e7;
    transform: translateY(-2px);
}

.social-proof {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: #b0b8c4;
}

.avatars {
    display: flex;
    gap: -10px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(45deg, #3779e7, #ff4444);
    border: 2px solid #161e29;
    margin-left: -10px;
}

.avatar:first-child {
    margin-left: 0;
}

/* Problems Section */
.problems {
    padding: 80px 0;
    background-color: #1a2332;
}

.problems h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: #b0b8c4;
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.problem-card {
    background-color: #161e29;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #ff4444;
}

.problem-card p {
    color: #b0b8c4;
}

/* Solutions Section */
.solutions {
    padding: 80px 0;
    background-color: #161e29;
}

.solutions h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.solution-card {
    background-color: #1a2332;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid rgba(55, 121, 231, 0.2);
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
    border-color: #3779e7;
    box-shadow: 0 10px 25px rgba(55, 121, 231, 0.2);
}

.solution-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.solution-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #3779e7;
}

.solution-card p {
    color: #b0b8c4;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: #1a2332;
}

.features h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

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

.feature-card {
    background-color: #161e29;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #3779e7;
}

.feature-card p {
    color: #b0b8c4;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background-color: #161e29;
}

.pricing h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.pricing-grid {
    padding-left:26%;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    width: 67%;
    justify-content: center;
    text-align: center;
    align-items: center;
    background-color: #1a2332;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-5px);
    border-color: #3779e7;
}

.pricing-switcher {
  text-align: center;
}

.pricing-switcher .fieldset {
  display: inline-block;
  position: relative;
  padding: 2px;
  border-radius: 50em;
  border: 2px solid #2d3e50;
}

.pricing-switcher input[type="radio"] {
  position: absolute;
  opacity: 0;
}

.pricing-switcher label {
  position: relative;
  z-index: 1;
  display: inline-block;
  width: 120px;
  height: 40px;
  line-height: 40px;
  cursor: pointer;
  font-size: 1.4rem;
  color: #ffffff;
}

.pricing-switcher .switch {
  position: absolute;
  top: 2px;
  left: 2px;
  height: 40px;
  width: 120px;
  background-color: #2d3e50;
  border-radius: 50em;
  transition: transform 0.4s ease;
}

/* Estados */
#mensal:checked ~ .switch {
  transform: translateX(0);
}

#semestral:checked ~ .switch {
  transform: translateX(123.5px);
}

#anual:checked ~ .switch {
  transform: translateX(248px);
}

.no-js .pricing-switcher {
  display: none;
}

.pricing-card.featured {
    border-color: #3779e7;
    box-shadow: 0 10px 25px rgba(55, 121, 231, 0.2);
}

.pricing-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #ff4444;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #3779e7;
}

.pricing-header p {
    color: #b0b8c4;
    margin-bottom: 2rem;
}

.pricing-price {
    margin-bottom: 2rem;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
}

.period {
    color: #b0b8c4;
    font-size: 1rem;
}

.pricing-features h4 {
    color: #3779e7;
    margin-bottom: 1rem;
}

.pricing-features ul {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: #b0b8c4;
    position: relative;
    padding-left: 1.5rem;
}

.pricing-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #ffffff;
    font-weight: bold;
}

/* CTA Section */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #3779e7, #2c5fb8);
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.cta .btn-primary {
    background-color: #ffffff;
    color: #3779e7;
    margin-top: 2rem;
}

.cta .btn-primary:hover {
    background-color: #f0f0f0;
    color: #2c5fb8;
}

/* Footer */
.footer {
    background-color: #0f1419;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    height: 40px;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: #b0b8c4;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-column h4 {
    color: #3779e7;
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: #b0b8c4;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #3779e7;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: #b0b8c4;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 300px;
    }
    
    .problems-grid,
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-proof {
        flex-direction: column;
        gap: 1rem;
    }

    .pricing-grid {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        width: 100%;
        margin: 0 auto;
        padding: 0;
    }

    .pricing-card {
        width: 90%;
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card .pricing-price .price {
        font-size: 2rem;
    }

    .pricing-card .pricing-header h3 {
        font-size: 1.5rem;
    }

    .pricing-card .pricing-header p {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .problems,
    .solutions,
    .features,
    .pricing,
    .cta {
        padding: 60px 0;
    }
}

.whatsapp-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: #25D366;
    color: white;
    border: none;
    border-radius: 50px;
    padding: 15px 20px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    text-decoration: none;
    z-index: 9999;
}

.whatsapp-button img {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

.whatsapp-button:hover {
    background-color: #1ebe5d;
}