:root {
    --bg-main: #F9F6F0;
    --bg-card: #FFFFFF;
    --text-title: #2B1B12;
    --text-body: #4A3E37;
    --text-muted: #7A6C63;
    --brand-primary: #3D2517;
    --brand-accent: #8C4327;
    --brand-soft: #EFE8DF;
    --border-color: #E2D7CB;
    --alert-bg: #7A2417;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

/* BANNER OBLIGATORIO */
.notice-bar {
    background-color: var(--alert-bg);
    color: #FFFFFF;
    text-align: center;
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* HEADER INSTITUCIONAL */
header {
    background-color: var(--brand-primary);
    color: #FAF6F0;
    padding: 56px 0;
    border-bottom: 3px solid var(--brand-accent);
}

.header-content {
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}

.inst-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #D6C2B0;
    margin-bottom: 12px;
    font-weight: 500;
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 8px;
}

.main-title span {
    color: #E2BBA3;
    font-weight: 400;
    display: block;
    font-size: 1.8rem;
    margin-top: 4px;
}

.slogan {
    font-size: 1.1rem;
    color: #D6C2B0;
    font-style: italic;
    margin-bottom: 32px;
}

/* METADATOS CLAVE */
.meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(226, 215, 203, 0.2);
    padding: 20px;
    border-radius: 6px;
    text-align: left;
}

.meta-item label {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #C2AFA0;
    margin-bottom: 2px;
}

.meta-item span {
    font-size: 0.98rem;
    font-weight: 600;
    color: #FFFFFF;
}

/* BOTÓN DE INSCRIPCIÓN */
.cta-box {
    margin-top: 36px;
}

.btn-action {
    display: inline-block;
    background-color: var(--brand-accent);
    color: #FFFFFF;
    font-size: 1rem;
    font-weight: 600;
    padding: 14px 32px;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.btn-action:hover {
    background-color: #72341D;
}

/* SECCIONES */
section {
    padding: 56px 0;
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    margin-bottom: 36px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 16px;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-title);
    letter-spacing: -0.01em;
}

/* CONTROLES ACORDEÓN */
.accordion-controls {
    display: flex;
    gap: 10px;
}

.btn-small {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-body);
    padding: 6px 14px;
    font-size: 0.82rem;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-small:hover {
    background-color: var(--brand-soft);
    border-color: var(--brand-accent);
}

/* CRONOGRAMA DESPLEGABLE */
.accordion-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.accordion-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    background: none;
    border: none;
    padding: 18px 24px;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: inherit;
}

.accordion-header:hover {
    background-color: #FDFBF8;
}

.time-title {
    display: flex;
    align-items: center;
    gap: 16px;
}

.time-badge {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--brand-accent);
    background-color: var(--brand-soft);
    padding: 4px 10px;
    border-radius: 4px;
    min-width: 125px;
    text-align: center;
}

.block-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-title);
}

.toggle-icon {
    font-size: 1.2rem;
    color: var(--text-muted);
    transition: transform 0.3s ease;
}

.accordion-item.active .toggle-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
    background-color: #FAF8F5;
    border-top: 1px solid transparent;
}

.accordion-item.active .accordion-content {
    max-height: 1000px;
    border-top-color: var(--border-color);
    transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

.event-list {
    padding: 16px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.event-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 14px 18px;
    border-radius: 4px;
}

.event-card h4 {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 4px;
}

.event-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.event-loc {
    display: inline-block;
    margin-top: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--brand-primary);
    background-color: var(--brand-soft);
    padding: 2px 8px;
    border-radius: 3px;
}

/* GRID DE DISERTANTES */
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
    gap: 24px;
}

.speaker-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.speaker-img-wrapper {
    position: relative;
    width: 100%;
    height: 240px;
    background-color: #EFEAE4;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.speaker-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.speaker-img-placeholder {
    width: 80px;
    height: 80px;
    opacity: 0.35;
    fill: var(--brand-primary);
}

.speaker-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.speaker-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-title);
    margin-bottom: 2px;
}

.speaker-origin {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: var(--brand-accent);
    margin-bottom: 12px;
}

.speaker-topic {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--brand-primary);
    background-color: var(--brand-soft);
    padding: 8px 12px;
    border-radius: 4px;
    margin-bottom: 12px;
}

.speaker-bio {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.45;
}

/* NOTAS Y PIE */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.info-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 6px;
}

.info-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-title);
    margin-bottom: 6px;
}

.info-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
}

footer {
    background-color: var(--brand-primary);
    color: #C2AFA0;
    padding: 40px 0;
    text-align: center;
    font-size: 0.88rem;
}

footer strong {
    color: #FFFFFF;
}

@media (max-width: 768px) {
    .main-title { font-size: 1.9rem; }
    .main-title span { font-size: 1.3rem; }
    .accordion-header { flex-direction: column; align-items: flex-start; gap: 8px; }
    .time-badge { width: auto; }
    .section-header { flex-direction: column; align-items: flex-start; }
}