/* ============================================
   Variables y Reset
   ============================================ */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --text-dark: #2d3748;
    --text-light: #718096;
    --background: #ffffff;
    --background-alt: #f7fafc;
    --border-radius: 12px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ============================================
   Container Principal
   ============================================ */
.container {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow: hidden;
}

.content {
    position: relative;
    z-index: 10;
    background: var(--background);
    border-radius: 24px;
    padding: 3rem 2rem;
    max-width: 900px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    animation: fadeInUp 0.8s ease-out;
}

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

/* ============================================
   Header / Logo
   ============================================ */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -1px;
}

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

/* ============================================
   Imagen Principal
   ============================================ */
.image-container {
    text-align: center;
    margin: 2rem 0;
    animation: fadeIn 1s ease-out 0.2s both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.main-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.main-image:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Texto Principal
   ============================================ */
.text-content {
    text-align: center;
    margin: 2.5rem 0;
    animation: fadeIn 1s ease-out 0.4s both;
}

.title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   Sección de Suscripción
   ============================================ */
.subscribe-section {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.08), rgba(118, 75, 162, 0.08));
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
    animation: fadeIn 1s ease-out 0.6s both;
}

.subscribe-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.subscribe-section > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.subscribe-form {
    display: flex;
    gap: 0.75rem;
    max-width: 500px;
    margin: 0 auto;
    flex-wrap: wrap;
    justify-content: center;
}

.email-input {
    flex: 1;
    min-width: 250px;
    padding: 0.875rem 1.25rem;
    font-size: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    outline: none;
    transition: var(--transition);
    font-family: inherit;
}

.email-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.submit-btn {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

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

.submit-btn:active {
    transform: translateY(0);
}

.form-message {
    margin-top: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    min-height: 20px;
}

.form-message.success {
    color: #48bb78;
}

.form-message.error {
    color: #f56565;
}

/* ============================================
   Redes Sociales
   ============================================ */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
    animation: fadeIn 1s ease-out 0.8s both;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--background-alt);
    color: var(--text-light);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.social-icon:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #e2e8f0;
    animation: fadeIn 1s ease-out 1s both;
}

.footer p {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* ============================================
   Animación de Fondo
   ============================================ */
.background-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    animation: float linear infinite;
}

.particle:nth-child(1) {
    width: 80px;
    height: 80px;
    left: 10%;
    animation-duration: 25s;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    width: 60px;
    height: 60px;
    left: 70%;
    animation-duration: 20s;
    animation-delay: 3s;
}

.particle:nth-child(3) {
    width: 100px;
    height: 100px;
    left: 40%;
    animation-duration: 30s;
    animation-delay: 1s;
}

.particle:nth-child(4) {
    width: 50px;
    height: 50px;
    left: 80%;
    animation-duration: 22s;
    animation-delay: 5s;
}

.particle:nth-child(5) {
    width: 70px;
    height: 70px;
    left: 20%;
    animation-duration: 28s;
    animation-delay: 2s;
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .content {
        padding: 2rem 1.5rem;
    }

    .logo {
        font-size: 2rem;
    }

    .title {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .subscribe-form {
        flex-direction: column;
    }

    .email-input {
        min-width: 100%;
    }

    .submit-btn {
        width: 100%;
    }

    .social-links {
        gap: 0.75rem;
    }

    .social-icon {
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }

    .content {
        padding: 1.5rem 1rem;
        border-radius: 16px;
    }

    .logo {
        font-size: 1.75rem;
    }

    .title {
        font-size: 1.25rem;
    }

    .subtitle {
        font-size: 0.9375rem;
    }

    .subscribe-section {
        padding: 1.5rem 1rem;
    }

    .subscribe-section h3 {
        font-size: 1.25rem;
    }
}

/* ============================================
   Loading States
   ============================================ */
.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.submit-btn.loading::after {
    content: "";
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
}

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

/* ============================================
   Smooth Scrolling
   ============================================ */
html {
    scroll-behavior: smooth;
}

/* ============================================
   Selection Color
   ============================================ */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}