@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&family=Syne:wght@400;700;800&family=Inter:wght@300;400;600&display=swap');

:root {
    --bg-color: #ffffff;
    --bg-alt: #f4f4f4;
    --text-primary: #111111;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    
    --font-serif: 'Playfair Display', serif;
    --font-display: 'Syne', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Scroll Container */
.scroll-container {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

.horizontal-wrapper {
    display: flex;
    height: 100vh;
    width: fit-content;
}

/* Sections */
.panel {
    width: 100vw;
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 5vw;
    flex-shrink: 0;
}

/* Header / Nav */
.header-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    mix-blend-mode: difference;
    color: #fff;
}

.logo {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.05em;
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-links a {
    color: currentColor;
    text-decoration: none;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.6;
}

/* Section Indices (*01, *02) */
.section-index {
    position: absolute;
    bottom: 3rem;
    right: 5vw;
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    color: var(--text-primary);
}

/* Typography Utilities */
.text-huge {
    font-family: var(--font-serif);
    font-size: clamp(6rem, 15vw, 15rem);
    line-height: 0.8;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.text-sub {
    font-family: var(--font-display);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    font-weight: 700;
}

/* --- Panel 1: Hero --- */
.hero-content {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
}

.hero-img-wrap {
    width: 35vw;
    height: 70vh;
    overflow: hidden;
    position: relative;
}

.hero-img-wrap img {
    width: 100%;
    height: 120%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.2);
}

.hero-text {
    width: 50vw;
    position: relative;
    z-index: 2;
}

.hero-text .text-huge {
    margin-left: -15vw; /* Overlap image */
}

/* --- Panel 2: About --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5vw;
    width: 100%;
    align-items: center;
}

.about-text p {
    font-size: 1.2rem;
    line-height: 1.8;
    max-width: 500px;
    margin-bottom: 2rem;
}

.editorial-block {
    background: var(--bg-alt);
    padding: 3rem;
    border-left: 4px solid var(--text-primary);
}

/* --- Panel 3: Library --- */
.library-panel {
    align-items: flex-start;
    padding-top: 20vh;
}

.library-container {
    display: flex;
    gap: 4vw;
    width: 100%;
}

.filters-sidebar {
    width: 20vw;
}

.custom-select {
    width: 100%;
    padding: 1rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-primary);
    outline: none;
    margin-bottom: 1.5rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.files-area {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    width: 65vw;
    align-content: start;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    width: 65vw;
}

.pagination-btn {
    background: none;
    border: none;
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    padding: 0.6rem 1rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.pagination-btn:hover { color: var(--text-primary); }

.pagination-btn.active {
    color: var(--text-primary);
    border-bottom: 2px solid var(--text-primary);
}

.pagination-btn:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

.pagination-sep {
    font-size: 0.7rem;
    color: var(--border-color);
    font-family: var(--font-display);
}

/* Custom Scrollbar for files area */
.files-area::-webkit-scrollbar { width: 4px; }
.files-area::-webkit-scrollbar-track { background: transparent; }
.files-area::-webkit-scrollbar-thumb { background: var(--text-primary); }

.file-item {
    border: 1px solid var(--border-color);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: all 0.4s ease;
    background: #fff;
}

.file-item:hover {
    background: var(--text-primary);
    color: #fff;
}

.file-item h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.file-item .meta {
    font-family: var(--font-display);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
    opacity: 0.6;
}

.file-item a {
    margin-top: auto;
    font-family: var(--font-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    color: currentColor;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* --- Panel 4: Contact --- */
.contact-panel {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.contact-form {
    width: 50vw;
    max-width: 600px;
    margin-top: 3rem;
}

.form-input {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--text-primary);
    padding: 1rem 0;
    font-family: var(--font-display);
    font-size: 1.2rem;
    outline: none;
    margin-bottom: 2rem;
}

.btn-submit {
    background: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 1.5rem 4rem;
    font-family: var(--font-display);
    font-size: 1rem;
    text-transform: uppercase;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-submit:hover {
    transform: scale(0.95);
}

/* Utility for GSAP */
.parallax-img { transform-origin: center; }

/* --- Panel: Debates --- */
.debates-panel {
    align-items: flex-start;
    padding-top: 20vh;
}

.debates-container {
    display: flex;
    gap: 4vw;
    width: 100%;
}

.debates-sidebar {
    width: 20vw;
}

.debate-main-area {
    width: 65vw;
    height: 60vh;
    overflow-y: auto;
    padding-right: 2rem;
}

.debate-main-area::-webkit-scrollbar { width: 4px; }
.debate-main-area::-webkit-scrollbar-track { background: transparent; }
.debate-main-area::-webkit-scrollbar-thumb { background: var(--text-primary); }

.student-status-card, .student-login-invite {
    border: 1px solid var(--border-color);
    padding: 2rem;
    background: #fff;
}

.btn-student-login {
    display: block;
    background: var(--text-primary);
    color: #fff;
    text-decoration: none;
    text-align: center;
    padding: 1rem;
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.1em;
    transition: 0.3s;
}
.btn-student-login:hover {
    background: #333;
}

.btn-student-logout {
    display: inline-block;
    color: #ff4d4d;
    text-decoration: none;
    font-family: var(--font-display);
    font-size: 0.7rem;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.1em;
    margin-top: 1rem;
}
.btn-student-logout:hover {
    text-decoration: underline;
}

.debate-item-link {
    display: block;
    padding: 1.2rem;
    border: 1px solid var(--border-color);
    margin-bottom: 0.8rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s;
    background: #fff;
    cursor: pointer;
}

.debate-item-link:hover, .debate-item-link.active {
    background: var(--text-primary);
    color: #fff;
}

.debate-item-link h5 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.debate-item-link .meta {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.6;
    font-family: var(--font-display);
}

.stars-rating-input {
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-end;
    gap: 0.2rem;
}
.stars-rating-input input { display: none; }
.stars-rating-input label {
    font-size: 2rem;
    color: #ccc;
    cursor: pointer;
    transition: color 0.2s;
}
.stars-rating-input label:hover,
.stars-rating-input label:hover ~ label,
.stars-rating-input input:checked ~ label {
    color: #ecc94b;
}

.opinions-feed-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.opinion-card {
    border: 1px solid var(--border-color);
    padding: 1.8rem;
    background: #fff;
}

.opinion-card.is-mine {
    border-color: #2b6cb0;
    background: #f7fafc;
}

.opinion-card .header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.opinion-card .author {
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 800;
}

.opinion-card .stars {
    color: #ecc94b;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

.opinion-card .body-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #333;
}

.opinion-card .date {
    font-size: 0.65rem;
    color: #888;
    margin-top: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-display);
}

/* --- Ventana Emergente (Modal) Portal Alumnos --- */
.student-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
}

.student-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.student-modal-card {
    position: relative;
    background: #ffffff;
    width: 450px;
    padding: 4rem;
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    z-index: 3001;
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: modalFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.student-modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    font-size: 2.2rem;
    font-weight: 300;
    cursor: pointer;
    color: #888;
    line-height: 1;
    padding: 0;
    transition: color 0.2s, transform 0.2s;
}

.student-modal-close:hover {
    color: #111;
    transform: scale(1.1);
}

.student-modal-header {
    text-align: center;
    margin-bottom: 3rem;
    width: 100%;
}

.student-modal-header p {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.student-modal-header h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    line-height: 1.2;
    font-weight: 400;
}

.modal-form-group {
    width: 100%;
    margin-bottom: 1.5rem;
}

.modal-form-group label {
    display: block;
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.65rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.modal-form-input {
    width: 100%;
    border: none;
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 0;
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
    background: transparent;
}

.modal-form-input:focus {
    border-color: var(--text-primary);
}

.btn-modal-login {
    background: var(--text-primary);
    color: #fff;
    border: none;
    padding: 1.2rem;
    width: 100%;
    font-family: var(--font-display);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.2em;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
    margin-top: 1rem;
}

.btn-modal-login:hover {
    background: #333;
    transform: translateY(-2px);
}

.modal-error-msg {
    width: 100%;
    color: #ff4d4d;
    background: #fff5f5;
    border-left: 3px solid #ff4d4d;
    padding: 0.8rem 1rem;
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
    font-family: var(--font-body);
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(35px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Footer de Desarrollo --- */
.dev-footer {
    position: fixed;
    bottom: 1rem;
    left: 4vw;
    width: calc(100% - 8vw);
    border-top: 1px solid var(--border-color);
    padding-top: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-display);
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    z-index: 999;
    pointer-events: none;
}

.dev-footer p {
    margin: 0;
}

.dev-footer a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    transition: opacity 0.2s;
    pointer-events: auto;
}

.dev-footer a:hover {
    opacity: 0.7;
}

/* ==========================================================================
   Responsive Design & Mobile Styles (max-width: 1023px)
   ========================================================================== */
@media (max-width: 1023px) {
    /* 1. Reset GSAP horizontal scroll properties */
    .scroll-container {
        width: 100% !important;
        height: auto !important;
        overflow: visible !important;
        position: relative !important;
    }

    .horizontal-wrapper {
        display: flex !important;
        flex-direction: column !important;
        width: 100% !important;
        height: auto !important;
    }

    /* 2. Panels Stack Vertically */
    .panel {
        width: 100% !important;
        height: auto !important;
        min-height: 100vh !important;
        padding: 10rem 1.5rem 4rem 1.5rem !important; /* Top padding to prevent sticky nav overlay */
        scroll-margin-top: 75px !important; /* Proper scroll offset when jumping to panels */
        flex-shrink: unset !important;
        display: flex !important;
        flex-direction: column !important;
        justify-content: center !important;
        align-items: flex-start !important;
        border-bottom: 1px solid var(--border-color) !important;
    }

    /* 3. Header Glassmorphism Navigation for Mobile readability */
    .header-nav {
        padding: 1.2rem 1.5rem !important;
        background: rgba(255, 255, 255, 0.95) !important;
        backdrop-filter: blur(10px) !important;
        -webkit-backdrop-filter: blur(10px) !important;
        color: var(--text-primary) !important;
        mix-blend-mode: normal !important;
        border-bottom: 1px solid var(--border-color) !important;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03) !important;
    }

    .logo {
        font-size: 1.1rem !important;
    }

    .nav-links {
        gap: 0.8rem !important;
    }

    .nav-links a {
        font-size: 0.65rem !important;
        font-weight: 700 !important;
    }

    /* Hide section-index indicators on mobile to avoid layout noise */
    .section-index {
        display: none !important;
    }

    /* Hide redundant desktop parallax hero images on mobile to keep layouts compact */
    .hero-img-wrap {
        display: none !important;
    }

    /* Hero Panel (*01) */
    .hero-content {
        flex-direction: column-reverse !important;
        align-items: flex-start !important;
        gap: 2rem !important;
        width: 100% !important;
    }

    /* Mostrar y estilizar la foto del perfil (avatar) en dispositivos móviles */
    .hero-content .hero-img-wrap {
        display: block !important;
        width: 100% !important;
        height: 50vh !important;
        margin-top: 1rem !important;
    }

    .hero-text {
        width: 100% !important;
    }

    .hero-text .text-huge {
        font-size: 3.5rem !important;
        line-height: 1.0 !important;
        margin-left: 0 !important;
        margin-top: 1rem !important;
    }

    /* Vision Panel (*02) */
    .about-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
        width: 100% !important;
    }

    .about-text .text-huge {
        font-size: 3.5rem !important;
        margin-bottom: 0.2rem !important;
    }

    .editorial-block {
        padding: 2rem !important;
    }

    .editorial-block p {
        font-size: 1.2rem !important;
    }

    /* Re-display one primary image for Vision on mobile but styled cleanly */
    .about-grid .hero-img-wrap {
        display: block !important;
        width: 100% !important;
        height: 35vh !important;
        margin-top: 1rem !important;
    }

    /* Library Panel (*03) */
    .library-panel {
        padding-top: 8rem !important;
    }

    .library-container {
        flex-direction: column !important;
        gap: 2.5rem !important;
        width: 100% !important;
    }

    .filters-sidebar {
        width: 100% !important;
    }

    .filters-sidebar h2 {
        font-size: 1.2rem !important;
        margin-bottom: 1.5rem !important;
    }

    .files-area {
        width: 100% !important;
        grid-template-columns: 1fr !important; /* Stack files on small mobiles */
        gap: 1.5rem !important;
    }

    /* Debates Panel (*04) */
    .debates-panel {
        padding-top: 8rem !important;
    }

    .debates-container {
        flex-direction: column !important;
        gap: 2.5rem !important;
        width: 100% !important;
    }

    .debates-sidebar {
        width: 100% !important;
    }

    .debates-sidebar h2 {
        font-size: 1.2rem !important;
        margin-bottom: 1.5rem !important;
    }

    .debate-main-area {
        width: 100% !important;
        height: auto !important;
        overflow-y: visible !important;
        padding-right: 0 !important;
    }

    .editorial-debate-lock h3 {
        font-size: 1.8rem !important;
    }

    /* Contact Panel (*05) */
    .contact-panel {
        padding-top: 8rem !important;
    }

    .contact-container {
        flex-direction: column !important;
        gap: 2rem !important;
        width: 100% !important;
        align-items: flex-start !important;
    }

    .contact-left {
        width: 100% !important;
        flex-direction: column !important;
        align-items: flex-start !important;
        gap: 2rem !important;
    }

    .contact-left h2 {
        font-size: 3.5rem !important;
    }

    .contact-form {
        width: 100% !important;
        max-width: 100% !important;
        margin-top: 1rem !important;
    }

    /* Show the quill image styled elegantly on mobile */
    .contact-container .hero-img-wrap {
        display: block !important;
        width: 100% !important;
        height: 35vh !important;
        margin-top: 1rem !important;
    }

    /* Student Login Modal Responsiveness */
    .student-login-modal {
        width: 92% !important;
        max-width: 440px !important;
        padding: 2.5rem 1.5rem !important;
    }

    .student-modal-header h2 {
        font-size: 2rem !important;
    }

    /* Ajustes responsivos para el footer de desarrollo en móvil */
    .dev-footer {
        position: relative !important;
        width: calc(100% - 3rem) !important;
        margin: 4rem auto 2rem auto !important;
        padding-top: 1.5rem !important;
        flex-direction: column !important;
        gap: 0.8rem !important;
        text-align: center !important;
        pointer-events: auto !important;
        bottom: auto !important;
        left: auto !important;
    }
}