:root {
    --bg: #ffffff;
    --bg-alt: #f5f7fa;
    --ink: #052147;
    --muted: #8396a9;
    --accent: #005ac9;
    --accent-2: #0030a4;
    --card: #ffffff;
    --stroke: #d5dee7;
    --shadow: 0 24px 60px rgba(5, 33, 71, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Montserrat", "Futura", "Futura PT", "Trebuchet MS", sans-serif;
    color: var(--ink);
    background: radial-gradient(circle at 10% 10%, #ffffff 0%, #f7f9fc 45%, #eef3f9 100%);
    line-height: 1.6;
}

h1, h2, h3 {
    font-family: "Montserrat", "Futura", "Futura PT", "Trebuchet MS", sans-serif;
    margin: 0 0 0.6rem;
    line-height: 1.1;
    letter-spacing: -0.01em;
}

p {
    margin: 0 0 1rem;
    color: var(--muted);
}

a {
    color: inherit;
    text-decoration: none;
}

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

.container {
    width: min(1200px, 92vw);
    margin: 0 auto;
}

.site-main {
    padding-bottom: 3rem;
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--stroke);
}

.nav-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 0;
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.06em;
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
}

.brand-logo {
    height: clamp(64px, 8vw, 88px);
    width: auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    font-size: 0.95rem;
}

.nav-link {
    color: var(--muted);
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--ink);
}

.nav-search {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.nav-search input {
    border: 1px solid var(--stroke);
    background: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
    font-size: 0.9rem;
    min-width: 180px;
}

.nav-search button {
    border: none;
    background: var(--accent);
    color: #fff;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
    font-size: 0.85rem;
    cursor: pointer;
}

.hero {
    padding: 4rem 0 2rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.hero-kicker {
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-size: 0.75rem;
    color: var(--accent-2);
    font-weight: 700;
}

.hero-text {
    font-size: 1.1rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-copy-centered {
    text-align: center;
}

.hero-copy-centered .hero-actions {
    justify-content: center;
}

.hero-panel {
    position: relative;
    background: var(--card);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--stroke);
}

.hero-gradient {
    position: absolute;
    inset: auto -40% -40% auto;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(0, 90, 201, 0.22), transparent 70%);
}

.stats {
    display: grid;
    gap: 1.5rem;
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--bg-alt);
    border-radius: 16px;
    padding: 1rem 1.25rem;
    border: 1px solid var(--stroke);
    box-shadow: 0 12px 26px rgba(5, 33, 71, 0.08);
}

.stat-card .stat-number {
    font-size: 1.8rem;
}

.stat-card .stat-label {
    font-size: 0.75rem;
    letter-spacing: 0.22em;
}

.recent-layout {
    display: grid;
    grid-template-columns: 3fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.recent-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
}

.recent-grid.is-loading {
    opacity: 0.6;
    pointer-events: none;
}

.recent-grid .project-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.recent-grid .project-link {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.recent-grid .project-body {
    margin-top: auto;
}

.category-sidebar {
    background: var(--card);
    border-radius: 18px;
    border: 1px solid var(--stroke);
    padding: 1.25rem;
    box-shadow: 0 14px 30px rgba(5, 33, 71, 0.06);
    position: sticky;
    top: 110px;
}

.category-kicker {
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 0.7rem;
    color: var(--muted);
    margin-bottom: 1rem;
}

.category-list {
    display: grid;
    gap: 0.8rem;
    max-height: 620px;
    overflow-y: auto;
    padding-right: 0.35rem;
    scrollbar-width: thin;
}

.category-chip {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: 0.75rem;
    align-items: center;
    padding: 0.7rem 0.85rem;
    border-radius: 12px;
    border: 1px solid var(--stroke);
    background: #fff;
    border-left: 6px solid var(--category-accent, var(--accent));
    color: inherit;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.category-name {
    font-weight: 600;
    color: var(--ink);
    font-size: 0.9rem;
    overflow-wrap: anywhere;
}

.category-count {
    font-size: 0.75rem;
    color: var(--accent-2);
    border: 1px solid var(--stroke);
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    background: #fff;
    min-width: 2.6rem;
    text-align: center;
    border-left: 3px solid rgba(0, 0, 0, 0.08);
    justify-self: end;
}

.category-chip:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(5, 33, 71, 0.1);
}

.category-chip.is-active {
    border-color: var(--category-accent, var(--accent));
    background: rgba(0, 0, 0, 0.04);
}

.category-chip.is-active .category-count {
    border-color: var(--category-accent, var(--accent));
    color: var(--ink);
}

.category-chip-all {
    --category-accent: #000000;
    background: rgba(0, 0, 0, 0.05);
}

.category-chip:nth-child(8n + 1) {
    --category-accent: #ff8a3d;
    background: rgba(255, 138, 61, 0.12);
}

.category-chip:nth-child(8n + 2) {
    --category-accent: #2a9d8f;
    background: rgba(42, 157, 143, 0.12);
}

.category-chip:nth-child(8n + 3) {
    --category-accent: #3a86ff;
    background: rgba(58, 134, 255, 0.12);
}

.category-chip:nth-child(8n + 4) {
    --category-accent: #f4b740;
    background: rgba(244, 183, 64, 0.14);
}

.category-chip:nth-child(8n + 5) {
    --category-accent: #ef476f;
    background: rgba(239, 71, 111, 0.12);
}

.category-chip:nth-child(8n + 6) {
    --category-accent: #577590;
    background: rgba(87, 117, 144, 0.12);
}

.category-chip:nth-child(8n + 7) {
    --category-accent: #00b4d8;
    background: rgba(0, 180, 216, 0.12);
}

.category-chip:nth-child(8n + 8) {
    --category-accent: #84a98c;
    background: rgba(132, 169, 140, 0.14);
}

.stat-number {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--ink);
    display: block;
}

.stat-label {
    color: var(--muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
}

.section {
    padding: 3rem 0 2rem;
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.section-kicker {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    color: var(--accent-2);
    font-weight: 700;
}

.link {
    color: var(--accent);
    font-weight: 600;
}

/* =============================================
   FEATURED CAROUSEL - CORREGIDO
   ============================================= */
.featured-grid {
    display: flex;
    gap: 1.5rem;
    overflow-x: auto;
    overflow-y: visible;
    scroll-behavior: smooth;
    padding-bottom: 0.5rem;
    
    /* Ocultar scrollbar */
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.featured-grid::-webkit-scrollbar {
    display: none;
}

/* Todas las cards del carousel - ANCHO FIJO para consistencia */
.featured-grid > .project-card {
    flex: 0 0 280px;
    width: 280px;
    min-width: 280px;
    max-width: 280px;
    scroll-snap-align: start;
    margin-bottom: 0;
}

.featured-grid .project-link {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.featured-grid .project-media {
    flex-shrink: 0;
}

.featured-grid .project-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.featured-grid .project-desc {
    flex: 1;
}

.featured-grid .project-tag {
    margin-top: auto;
}

/* Responsive para carousel */
@media (max-width: 1200px) {
    .featured-grid > .project-card {
        flex: 0 0 260px;
        width: 260px;
        min-width: 260px;
        max-width: 260px;
    }
}

@media (max-width: 900px) {
    .featured-grid > .project-card {
        flex: 0 0 240px;
        width: 240px;
        min-width: 240px;
        max-width: 240px;
    }
}

@media (max-width: 600px) {
    .featured-grid > .project-card {
        flex: 0 0 85vw;
        width: 85vw;
        min-width: 240px;
        max-width: none;
    }
}

/* CAROUSEL CONTROLS */
.carousel-controls {
    display: flex;
    gap: 0.5rem;
}

.carousel-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--stroke);
    background: var(--card);
    color: var(--accent);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(5, 33, 71, 0.08);
}

.carousel-btn:hover {
    background: var(--accent);
    color: #fff;
    transform: scale(1.05);
}

.carousel-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* =============================================
   OTROS ESTILOS (sin cambios)
   ============================================= */
.carousel {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: minmax(260px, 1fr);
    gap: 1.5rem;
    overflow-x: auto;
    padding-bottom: 1rem;
    scroll-snap-type: x mandatory;
}

.carousel-card {
    scroll-snap-align: start;
    background: var(--card);
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--stroke);
    box-shadow: 0 12px 30px rgba(5, 33, 71, 0.08);
}

.carousel-media img,
.project-media img {
    width: 100%;
    height: 220px;
    object-fit: cover;
}

.carousel-body {
    padding: 1.2rem;
}

.carousel-meta {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--muted);
}

.carousel-desc {
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

.masonry {
    column-count: 3;
    column-gap: 1.5rem;
}

.project-card {
    break-inside: avoid;
    margin-bottom: 1.5rem;
    border-radius: 18px;
    background: var(--card);
    border: 1px solid var(--stroke);
    overflow: hidden;
    box-shadow: 0 14px 34px rgba(5, 33, 71, 0.08);
}

.project-link {
    display: block;
    color: inherit;
}

.project-media {
    position: relative;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    inset: auto 0 0 0;
    padding: 1.2rem;
    background: linear-gradient(to top, rgba(5, 33, 71, 0.85), transparent);
    color: #fff;
    transition: opacity 0.3s ease;
}

.project-meta {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    display: block;
    margin-bottom: 0.35rem;
}

.project-body {
    padding: 1.1rem 1.2rem 1.4rem;
}

.project-desc {
    font-size: 0.95rem;
    color: var(--muted);
    min-height: 4.6rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-tag {
    display: inline-block;
    margin-top: 0.8rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    background: rgba(0, 90, 201, 0.12);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
}

.project-placeholder {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #e6edf6, #f5f7fb);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.7rem 1.4rem;
    border-radius: 999px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 12px 28px rgba(0, 90, 201, 0.3);
}

.btn-ghost {
    border-color: var(--stroke);
    color: var(--ink);
    background: transparent;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
}

.explore-grid {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) 3fr;
    gap: 2rem;
    align-items: start;
}

.filters-panel {
    background: var(--card);
    padding: 1.5rem;
    border-radius: 18px;
    border: 1px solid var(--stroke);
    box-shadow: 0 14px 30px rgba(5, 33, 71, 0.06);
    position: sticky;
    top: 90px;
    max-height: calc(100vh - 130px);
    overflow-y: auto;
    scrollbar-gutter: stable;
}

.filters {
    display: grid;
    gap: 1rem;
}

.filter-section {
    border-top: 1px solid var(--stroke);
    padding-top: 0.75rem;
}

.filter-section:first-of-type {
    border-top: none;
    padding-top: 0;
}

.filter-section summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--ink);
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.filter-section summary::-webkit-details-marker {
    display: none;
}

.filter-section summary::after {
    content: "+";
    font-weight: 700;
    color: var(--muted);
}

.filter-section[open] summary::after {
    content: "-";
}

.filter-options {
    display: grid;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.filter-option {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--ink);
}

.filter-option input {
    accent-color: var(--accent);
}

.filter-count {
    font-size: 0.8rem;
    color: var(--muted);
}

.filter-group label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    color: var(--muted);
}

.filter-group input,
.filter-group select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border-radius: 12px;
    border: 1px solid var(--stroke);
    background: #fff;
}

.filter-button {
    background: var(--ink);
    color: #fff;
    border: none;
    padding: 0.7rem 1rem;
    border-radius: 12px;
    cursor: pointer;
}

.filter-reset {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--accent-2);
}

.results-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.result-meta {
    color: var(--muted);
}

.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(0, 90, 201, 0.12);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
}

.filter-chip span {
    font-size: 1rem;
    line-height: 1;
}

.filter-clear {
    font-size: 0.85rem;
    color: var(--muted);
    text-decoration: underline;
}

.pagination {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.project-hero {
    width: 100%;
    max-height: 420px;
    overflow: hidden;
    border-bottom: 1px solid var(--stroke);
}

.project-hero img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.project-layout {
    display: grid;
    grid-template-columns: 2.2fr 1fr;
    gap: 2rem;
    align-items: start;
}

.project-summary {
    font-size: 1.1rem;
}

.project-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.project-section {
    margin-top: 2rem;
}

.project-meta-panel {
    display: grid;
    gap: 1.5rem;
}

.meta-card {
    background: var(--card);
    border-radius: 18px;
    padding: 1.5rem;
    border: 1px solid var(--stroke);
}

.meta-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.75rem;
}

.meta-card li {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    color: var(--muted);
}

.meta-card strong {
    color: var(--ink);
}

.student-list {
    display: grid;
    gap: 0.5rem;
}

.share-links {
    display: grid;
    gap: 0.5rem;
}

.admin-layout {
    display: grid;
    gap: 2rem;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1rem;
    flex-wrap: wrap;
}

.admin-subtitle {
    margin: 0.5rem 0 0;
    color: var(--muted);
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.admin-card {
    background: var(--card);
    border-radius: 18px;
    padding: 1.5rem;
    border: 1px solid var(--stroke);
    box-shadow: 0 14px 30px rgba(5, 33, 71, 0.06);
}

.admin-search {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.admin-search input {
    flex: 1;
    min-width: 200px;
    padding: 0.55rem 0.75rem;
    border-radius: 12px;
    border: 1px solid var(--stroke);
}

.admin-search-results,
.admin-featured-list,
.admin-admin-list {
    display: grid;
    gap: 0.75rem;
    max-height: 520px;
    overflow-y: auto;
    padding-right: 0.35rem;
}

.admin-search-item,
.admin-featured-item,
.admin-admin-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.75rem 0.85rem;
    border-radius: 14px;
    border: 1px solid var(--stroke);
    background: #f9fbfe;
}

.admin-search-item input {
    accent-color: var(--accent);
}

.admin-featured-title {
    margin: 0;
    font-weight: 600;
    color: var(--ink);
}

.admin-featured-meta {
    margin: 0.2rem 0 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.admin-badge {
    font-size: 0.75rem;
    color: var(--accent-2);
    border: 1px solid var(--stroke);
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
    background: #fff;
}

.admin-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.admin-add {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.admin-add input {
    flex: 1;
    min-width: 220px;
    padding: 0.55rem 0.75rem;
    border-radius: 12px;
    border: 1px solid var(--stroke);
}

.admin-denied {
    max-width: 520px;
}

.site-footer {
    padding: 2.5rem 0;
    border-top: 1px solid var(--stroke);
    background: #f5f7fa;
    margin-top: 3rem;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-title {
    font-weight: 700;
    color: var(--ink);
}

.footer-text {
    color: var(--muted);
    margin: 0.25rem 0 0;
}

.footer-label {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    color: var(--muted);
}

.footer-link {
    display: inline-block;
    margin-top: 0.25rem;
    color: var(--accent-2);
}

.footer-admin .footer-link {
    font-size: 0.85rem;
    color: var(--muted);
}

.footer-admin .footer-link:hover {
    color: var(--ink);
}

.empty-state {
    color: var(--muted);
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Clones del carousel siempre visibles */
.featured-grid .carousel-clone {
    opacity: 1 !important;
    transform: none !important;
}

/* RESPONSIVE GENERAL */
@media (max-width: 1024px) {
    .masonry {
        column-count: 2;
    }
    .explore-grid {
        grid-template-columns: 1fr;
    }
    .filters-panel {
        position: static;
        max-height: none;
        overflow: visible;
    }
    .project-layout {
        grid-template-columns: 1fr;
    }
    .stats-cards {
        grid-template-columns: 1fr;
    }
    .recent-layout {
        grid-template-columns: 1fr;
    }
    .recent-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .category-sidebar {
        position: static;
    }
}

@media (max-width: 720px) {
    .nav-inner {
        grid-template-columns: 1fr;
        justify-items: start;
    }
    .nav-links {
        flex-wrap: wrap;
    }
    .nav-search {
        width: 100%;
    }
    .nav-search input {
        flex: 1;
        width: 100%;
    }
    .masonry {
        column-count: 1;
    }
    .carousel {
        grid-auto-columns: minmax(220px, 1fr);
    }
    .recent-grid {
        grid-template-columns: 1fr;
    }
}