/* ==========================================
   DESIGN SYSTEM & VARIABLES
   ========================================== */
:root {
    --primary: #5c3d75;
    --primary-light: #8a65a8;
    --secondary: #d4af37;
    --bg-light: #fdfbf7;
    --text-dark: #2c2c2c;
    --text-light: #777;
    --accent: #ff6b6b;
    --glass: rgba(255, 255, 255, 0.8);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition: all 0.8s cubic-bezier(0.65, 0, 0.35, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    overflow: hidden; /* Prevent default scrolling for the app effect */
    height: 100vh;
    width: 100vw;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
}

/* ==========================================
   LAYOUT & VIEWPORT
   ========================================== */
#viewport {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

#app {
    width: 100%;
    height: 100%;
    position: relative;
}

/* ==========================================
   HEADER
   ========================================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    z-index: 100;
    background: var(--glass);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease; /* Smooth transition for hiding */
}

.main-header.header-hidden {
    transform: translateY(-100%);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.hamburger-btn {
    display: none; /* Hide on desktop */
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-dark);
    cursor: pointer;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.logo span span {
    display: block;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--text-light);
}

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

nav ul li a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1rem;
    transition: color 0.3s ease;
}

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

.search-icon {
    font-size: 1.2rem;
    color: var(--text-dark);
    cursor: pointer;
}

/* ==========================================
   SECTIONS (GENERAL)
   ========================================== */
.section {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 6rem 3rem 3rem 3rem;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8);
    transition: var(--transition);
    pointer-events: none;
    overflow-y: auto; /* Allow scrolling within the section if content overflows */
}

.section.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    pointer-events: auto;
}

.section.exit {
    opacity: 0;
    visibility: hidden;
    transform: scale(1.5); /* Zoom in effect as it leaves */
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-number {
    background-color: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 800;
    font-size: 1.2rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary);
}

/* ==========================================
   HERO SECTION
   ========================================== */
#hero {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 3rem;
    background: radial-gradient(circle at top right, #fcf4ec, #fdfbf7);
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.hero-content .highlight {
    position: relative;
    color: var(--primary);
}

.hero-content .highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 12px;
    background-color: rgba(212, 175, 55, 0.3);
    z-index: -1;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: 0 4px 15px rgba(92, 61, 117, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(92, 61, 117, 0.4);
}

.meta-info {
    margin-top: 4rem;
    display: flex;
    gap: 2rem;
    border-top: 1px solid rgba(0,0,0,0.1);
    padding-top: 2rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.meta-item i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.meta-item strong {
    display: block;
    font-size: 0.9rem;
    color: var(--text-dark);
}

.meta-item p {
    font-size: 0.8rem;
    color: var(--text-light);
}

.hero-illustration {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-illustration img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    /* box-shadow: var(--shadow); */
}

.sticky-note {
    position: absolute;
    bottom: -20px;
    right: 20px;
    background-color: #fff9d7;
    padding: 1.5rem;
    width: 250px;
    transform: rotate(3deg);
    box-shadow: 5px 5px 15px rgba(0,0,0,0.1);
    border-radius: 5px;
}

.sticky-note p {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.1rem;
    color: #4a4a4a;
    line-height: 1.4;
}

.sticky-note .heart {
    position: absolute;
    bottom: 10px;
    right: 15px;
    color: var(--accent);
}

/* ==========================================
   INTRO SECTION
   ========================================== */
.section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1100px;
}

.image-wrapper img {
    width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.text-content p {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #444;
}

.tip-box {
    background-color: rgba(212, 175, 55, 0.1);
    border-left: 4px solid var(--secondary);
    padding: 1.5rem;
    border-radius: 0 10px 10px 0;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.tip-box i {
    font-size: 1.5rem;
    color: var(--secondary);
    margin-top: 0.2rem;
}

/* ==========================================
   DESARROLLO SECTION
   ========================================== */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    max-width: 1000px;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.card-icon {
    font-size: 2.5rem;
    color: var(--primary-light);
}

.card h3 {
    color: var(--primary);
    font-size: 1.5rem;
}

.card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* ==========================================
   DISCURSOS SECTION
   ========================================== */
.comparison-container {
    display: flex;
    gap: 2rem;
    align-items: center;
    max-width: 1100px;
    width: 100%;
    position: relative;
}

.comp-box {
    flex: 1;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.comp-box.discursos {
    border-top: 5px solid var(--primary);
}

.comp-box.discusiones {
    border-top: 5px solid var(--primary-light);
}

.comp-box h3 {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.comp-box ul {
    list-style: none;
}

.comp-box ul li {
    padding: 0.8rem 0;
    border-bottom: 1px solid #eee;
    color: #555;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.comp-box ul li::before {
    content: '✓';
    color: var(--secondary);
    font-weight: bold;
}

.vs-circle {
    width: 60px;
    height: 60px;
    background-color: var(--secondary);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 800;
    font-size: 1.2rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    z-index: 2;
}

/* ==========================================
   RECURSOS SECTION
   ========================================== */
.multimedia-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1100px;
    width: 100%;
}

.media-box {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    justify-content: space-between;
}

.media-box h3 {
    color: var(--primary);
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.media-placeholder {
    height: 150px;
    background: #f4f1ea;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    color: var(--text-light);
}

.media-placeholder i {
    font-size: 3rem;
    color: var(--primary-light);
}

.audio-player {
    background: #f4f1ea;
    padding: 1rem;
    border-radius: 10px;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar {
    flex: 1;
    height: 5px;
    background: #ddd;
    border-radius: 5px;
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 30%;
    height: 100%;
    background: var(--primary);
    border-radius: 5px;
}

.timeline-preview {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.tl-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem;
    background: #f4f1ea;
    border-radius: 5px;
    font-size: 0.9rem;
}

.media-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    padding: 0.5rem;
    border: 1px solid var(--primary);
    border-radius: 5px;
    transition: all 0.3s ease;
}

.media-link:hover {
    background: var(--primary);
    color: white;
}

/* ==========================================
   CONCLUSIONES & BIBLIO
   ========================================== */
.section-grid.reverse {
    grid-template-columns: 0.8fr 1.2fr;
}

.illustration-placeholder {
    width: 100%;
    height: 300px;
    background: #f4f1ea;
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.illustration-placeholder i {
    font-size: 5rem;
    color: var(--primary-light);
}

.biblio-content {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
    max-width: 800px;
    width: 100%;
}

.biblio-content ul {
    list-style: none;
}

.biblio-content ul li {
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
    color: #555;
    line-height: 1.6;
}

/* ==========================================
   FOOTER
   ========================================== */
.main-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--primary);
    color: white;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 20px 20px 0 0;
}

.main-footer .quote {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-size: 1.1rem;
    max-width: 60%;
}

.social-icons {
    display: flex;
    gap: 1.5rem;
    font-size: 1.3rem;
}

.social-icons a {
    color: white;
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: var(--secondary);
}

/* ==========================================
   CONTROLS
   ========================================== */
.nav-controls {
    position: fixed;
    bottom: 4rem;
    right: 4rem;
    z-index: 100;
    display: none; /* Hidden on hero, shown later */
}

.btn-nav {
    background-color: var(--secondary);
    color: white;
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.btn-nav:hover {
    transform: scale(1.1);
    background-color: #c49f2c;
}

/* Helper to show controls */
body.show-controls .nav-controls {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================
   IMAGE MODAL (ZOOM EFFECT)
   ========================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 300;
    padding-top: 50px;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 85vh;
    border-radius: 10px;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
    animation: zoom 0.3s ease;
}

@keyframes zoom {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.close-modal:hover {
    color: var(--secondary);
}

.zoomable-img {
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 10px;
}

.zoomable-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow);
}

.click-tip {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.5rem;
    font-style: italic;
}

/* ==========================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================== */

/* Tablets and small desktops */
@media (max-width: 1024px) {
    .section {
        padding: 160px 2rem 350px 2rem; /* Increased bottom padding significantly to prevent content from being hidden by the fixed footer */
        overflow-y: auto; /* Allow scrolling within sections */
        justify-content: flex-start; /* Align content to top to prevent cut-off on overflow */
    }
    
    #hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-illustration {
        order: -1; /* Put illustration on top */
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
    
    .section-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .section-grid.reverse {
        grid-template-columns: 1fr;
    }
    
    .multimedia-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    .hamburger-btn {
        display: block; /* Show on mobile */
    }
    
    .main-header {
        flex-direction: row; /* Keep horizontal layout */
        justify-content: space-between;
        padding: 1rem 1.5rem;
    }
    
    nav {
        position: fixed;
        top: 60px; /* Below header */
        left: 0;
        width: 100%;
        background: var(--glass);
        backdrop-filter: blur(10px);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        z-index: 99;
        border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    }
    
    nav.active {
        transform: translateY(0);
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        padding: 2rem;
        gap: 1.5rem;
    }
    
    nav ul li a {
        font-size: 1.1rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
        overflow-wrap: break-word; /* Prevent overflow */
    }
    
    .sticky-note {
        position: static; /* Prevent cut off */
        width: 100%;
        margin-top: 1rem;
        transform: none;
    }
    
    .grid-cards {
        grid-template-columns: 1fr;
    }
    
    .comparison-container {
        flex-direction: column;
        gap: 2rem;
    }
    
    .multimedia-grid {
        grid-template-columns: 1fr;
    }
    
    .main-footer {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1.5rem;
    }
    
    .main-footer .quote {
        max-width: 100%;
    }
    
    .nav-controls {
        bottom: 2rem;
        right: 2rem;
    }
}

/* Small Phones */
@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .meta-info {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .comp-box {
        padding: 1.5rem;
    }
}