:root {
    /* Variables de Color */
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #f5f5f5;
    --subtext-color: #a0a0a0;
    --badge-bg: #ffffff;
    --badge-text: #000000;
    --hover-bg: rgba(255, 255, 255, 0.05);

    /* Botones CTA */
    --btn-primary-bg: #ffffff;
    --btn-primary-text: #000000;
    --btn-secondary-bg: rgba(255, 255, 255, 0.08);
    --btn-secondary-hover-bg: rgba(255, 255, 255, 0.15);

    /* Estructura y Bordes */
    --border-width: 1px;
    --border-style: solid;
    --border-color: #333333;
    --border-radius-card: 16px;
    --border-radius-btn: 20px;
    --border-radius-badge: 4px;
    --border-radius-avatar: 50%;

    --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    --transition-standard: all 0.2s ease;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 40px 20px;
}

/* Contenedor Principal (Card) */
.container {
    position: relative;
    width: 100%;
    max-width: 680px;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-card);
    border: var(--border-width) var(--border-style) var(--border-color);
    padding: 40px;
}

.group-container {
    max-width: 480px;
    padding: 0 32px 32px 32px;
    overflow: hidden; /* Corta la imagen para que respete los bordes redondeados */
}

/* Ajuste del Banner Superior */
.banner-container {
    width: calc(100% + 64px);
    margin-left: -32px;
    margin-right: -32px;
    margin-bottom: 24px;
}

.banner-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
    border-bottom: var(--border-width) var(--border-style) var(--border-color);
}

/* Botón Volver (Overlay sobre Banner) */
.back-btn {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 10;
    color: #ffffff;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-decoration: none;
    transition: var(--transition-standard);
}

.back-btn:hover {
    background-color: rgba(0, 0, 0, 0.8);
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.back-icon {
    fill: currentColor;
}

/* Encabezado */
header.group-header {
    display: block;
    margin-top: 0;
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: var(--border-width) var(--border-style) var(--border-color);
}

.group-id {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 4px;
}

.meta-info {
    font-size: 0.8rem;
    color: var(--subtext-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
    line-height: 1.4;
}

main {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--subtext-color);
    font-weight: 600;
}

/* Lista de Integrantes */
.item-list {
    list-style: none;
    display: flex;
    flex-direction: column;
}

.list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: var(--border-width) var(--border-style) var(--border-color);
}

.list-item:last-child {
    border-bottom: none;
}

.member-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.member-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-avatar);
    object-fit: cover;
    border: var(--border-width) var(--border-style) var(--border-color);
}

.item-title {
    font-size: 0.95rem;
    font-weight: 400;
}

.item-link {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition-standard);
}

.item-link:hover {
    opacity: 0.8;
}

.badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: var(--border-radius-badge);
    letter-spacing: 0.05em;
    background-color: var(--badge-bg);
    color: var(--badge-text);
}

/* Divisor */
.divider {
    width: 100%;
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}

/* Estilos de Botonera CTA (Figma, Mapa, Plan) */
.cta-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 18px;
    border-radius: var(--border-radius-btn);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition-standard);
    white-space: nowrap;
}

.cta-btn-primary {
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    border: 1px solid var(--btn-primary-bg);
    flex: 1;
}

.cta-btn-primary:hover {
    opacity: 0.88;
}

.cta-btn-secondary {
    background-color: var(--btn-secondary-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
}

.cta-btn-secondary:hover {
    background-color: var(--btn-secondary-hover-bg);
    border-color: var(--subtext-color);
}

.secondary-group {
    display: flex;
    gap: 8px;
}

/* Pie de página y legales */
footer {
    margin-top: 28px;
    padding-top: 20px;
    border-top: var(--border-width) var(--border-style) var(--border-color);
    font-size: 0.75rem;
    color: var(--subtext-color);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-link {
    color: var(--subtext-color);
    text-decoration: underline;
    text-underline-offset: 3px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition-standard);
}

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

.external-icon {
    fill: currentColor;
}

.legal-notice {
    font-size: 0.7rem;
    line-height: 1.4;
    color: var(--subtext-color);
    opacity: 0.7;
}