/*
* File: style.css
* Website: RetroLingua - Cursos de Inglés
* Description: Estilos para un sitio web de cursos de inglés con temática retro y texturas hiperrealistas.
*/

/* -------------------------------------------------------------------
   1. CSS Variables (Theme Definition)
------------------------------------------------------------------- */

:root {
    /* Color Palette (Tetradic) */
    --color-primary: #0D5C63;    /* Deep Teal */
    --color-secondary: #D97925;  /* Vintage Orange */
    --color-accent-1: #5A733E;     /* Earthy Green */
    --color-accent-2: #BF4A67;     /* Soft Magenta */

    /* Neutral Colors */
    --color-background-light: #F5F0E1; /* Cream */
    --color-background-dark: #2A2B2A;  /* Charcoal */
    --color-text-dark: #222222;       /* Dark text for light backgrounds */
    --color-text-light: #FFFFFF;     /* Light text for dark backgrounds */
    --color-text-muted: #555555;

    /* Fonts */
    --font-primary: 'Playfair Display', serif;
    --font-secondary: 'Source Sans Pro', sans-serif;

    /* UI Elements */
    --border-radius: 8px;
    --box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 12px 35px rgba(0, 0, 0, 0.15);
    --transition-speed: 0.3s;

    /* Spacing */
    --header-height: 80px;
}

/* -------------------------------------------------------------------
   2. Global & Base Styles
------------------------------------------------------------------- */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.7;
    background-color: var(--color-background-light);
    color: var(--color-text-dark);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-primary);
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-text-muted);
}

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* -------------------------------------------------------------------
   3. Layout & Utility Classes
------------------------------------------------------------------- */

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

section {
    padding: 60px 0;
    overflow: hidden;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    color: var(--color-text-dark);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: -30px auto 40px;
    color: var(--color-text-muted);
}

.columns {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    align-items: center;
}

.column {
    flex: 1;
    min-width: 300px;
}

.column.is-two-thirds {
    flex: 2;
}

.parallax-bg {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}

/* -------------------------------------------------------------------
   4. Buttons & Interactive Elements
------------------------------------------------------------------- */

.cta-button {
    display: inline-block;
    padding: 15px 35px;
    font-family: var(--font-secondary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    box-shadow: var(--box-shadow);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
    background-color: #e68a3a;
    color: var(--color-text-light);
}

.cta-button.secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.cta-button.secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.read-more {
    display: inline-block;
    margin-top: 15px;
    font-weight: 600;
    color: var(--color-accent-2);
    position: relative;
}

.read-more::after {
    content: '→';
    margin-left: 8px;
    transition: margin-left var(--transition-speed) ease;
}

.read-more:hover::after {
    margin-left: 15px;
}

/* -------------------------------------------------------------------
   5. Header & Navigation
------------------------------------------------------------------- */

.site-header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(245, 240, 225, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    height: var(--header-height);
}

.main-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu li a {
    color: var(--color-text-dark);
    font-weight: 600;
    padding: 10px 0;
    position: relative;
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-secondary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-speed) ease;
}

.nav-menu li a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.burger-menu {
    display: none;
    cursor: pointer;
    background: transparent;
    border: none;
    z-index: 1001;
}

.burger-menu span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text-dark);
    margin: 5px 0;
    transition: all var(--transition-speed) ease;
}

/* -------------------------------------------------------------------
   6. Section Specific Styles
------------------------------------------------------------------- */

/* Hero Section */
.hero-section {
    color: var(--color-text-light);
    height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-content h1 {
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-bottom: 40px;
}

/* Statistics Section */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-widget .stat-number {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.stat-widget .stat-label {
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

/* Card Component */
.card {
    background-color: var(--color-text-light);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: all var(--transition-speed) ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-align: center;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 30px;
}

.card-content h3 {
    margin-bottom: 15px;
}

/* Methodology Section */
.methodology-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* Pricing Section */
.pricing-section {
    background-color: #fdfaf2;
}
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: center;
}
.pricing-card {
    position: relative;
}
.pricing-card.featured {
    transform: scale(1.05);
    border: 2px solid var(--color-secondary);
}
.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent-2);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}
.pricing-card .price {
    font-size: 2.5rem;
    font-family: var(--font-primary);
    color: var(--color-primary);
    margin: 20px 0;
}
.pricing-card .price span {
    font-size: 1rem;
    color: var(--color-text-muted);
}
.pricing-card ul {
    margin: 30px 0;
    text-align: left;
    display: inline-block;
}
.pricing-card li {
    padding: 8px 0;
    border-bottom: 1px solid #eee;
}

/* Portfolio Section */
.portfolio-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}
.portfolio-gallery .card-image {
    height: 350px;
}
.portfolio-gallery blockquote {
    font-style: italic;
    color: var(--color-text-muted);
    border-left: 3px solid var(--color-secondary);
    padding-left: 20px;
    margin-bottom: 15px;
    text-align: left;
}
.portfolio-gallery cite {
    font-weight: 600;
    color: var(--color-primary);
    display: block;
    text-align: right;
}

/* Blog Section */
.blog-posts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}
.blog-post-card .card-content {
    text-align: left;
}

/* Partners Section */
.partners-slider {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 40px;
}
.partner-logo img {
    max-height: 60px;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all var(--transition-speed) ease;
}
.partner-logo img:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* Careers Section */
.job-listings {
    max-width: 800px;
    margin: 0 auto;
}
.job-item {
    background-color: white;
    padding: 30px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}
.job-item h3, .job-item p { margin-bottom: 0; }
.job-item p { flex-basis: 100%; }

/* External Resources Section */
.resource-list {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: var(--border-radius);
}
.resource-list li {
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}
.resource-list li:last-child {
    border-bottom: none;
}
.resource-list a {
    font-weight: 600;
    font-size: 1.1rem;
}

/* Contact Section */
.contact-section {
    color: var(--color-text-light);
}
.contact-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 92, 99, 0.85); /* Primary color with opacity */
}
.contact-content {
    position: relative;
    z-index: 1;
    text-align: center;
}
.contact-content h2, .contact-content p {
    color: var(--color-text-light);
}
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    margin-top: 40px;
}
.form-group {
    position: relative;
    margin-bottom: 25px;
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius);
    color: var(--color-text-light);
    font-family: var(--font-secondary);
    font-size: 1rem;
    transition: border-color var(--transition-speed) ease;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
}
.contact-form ::placeholder {
    color: rgba(255, 255, 255, 0.7);
}
.contact-form label {
    position: absolute;
    top: -10px;
    left: 15px;
    background: var(--color-primary);
    padding: 0 5px;
    font-size: 0.9rem;
    color: var(--color-text-light);
}
.contact-form button {
    width: 100%;
}

/* -------------------------------------------------------------------
   7. Footer
------------------------------------------------------------------- */

.site-footer {
    background-color: var(--color-background-dark);
    color: #aab;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h4 {
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.footer-column a {
    color: #aab;
    display: inline-block;
    padding: 5px 0;
}

.footer-column a:hover {
    color: var(--color-secondary);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    font-size: 0.9rem;
}

/* -------------------------------------------------------------------
   8. Page Specific & Animation
------------------------------------------------------------------- */

/* Legal Pages (Privacy & Terms) */
.legal-page-content {
    padding: 120px 0 60px;
}
.legal-page-content .container {
    max-width: 800px;
}
.legal-page-content h1 {
    margin-bottom: 30px;
}

/* Success Page */
.success-page body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    text-align: center;
    background-color: var(--color-primary);
}
.success-content {
    background: var(--color-background-light);
    padding: 50px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}
.success-content h1 {
    color: var(--color-accent-1);
}

/* Scroll Animations */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate.animate__fadeIn,
.scroll-animate.animate__fadeInUp,
.scroll-animate.animate__fadeInLeft,
.scroll-animate.animate__fadeInRight,
.scroll-animate.animate__zoomIn {
    opacity: 1;
    transform: translateY(0);
}

/* -------------------------------------------------------------------
   9. Media Queries (Responsive Design)
------------------------------------------------------------------- */

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background-color: var(--color-background-light);
        transition: right var(--transition-speed) ease-in-out;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-menu li a {
        font-size: 1.5rem;
    }

    .burger-menu {
        display: block;
    }

    .burger-menu.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .burger-menu.active span:nth-child(2) {
        opacity: 0;
    }
    .burger-menu.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .columns {
        flex-direction: column;
    }

    .job-item {
        text-align: center;
        justify-content: center;
    }
}