:root {
    --tambre-green-dark: #1b4d27;
    --tambre-green: #2d7a3e;
    --tambre-light: #f0fdf4;
    --tambre-accent: #e67e22; /* Para el botón de reserva */
    --tambre-blue: #2e5c9a;
    --white: #ffffff;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
}

body { font-family: 'Inter', sans-serif; margin: 0; color: #333; background-color: var(--white); scroll-behavior: smooth; }

/* Cabecera Corporativa */
.main-header {
    background-color: var(--tambre-green-dark);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}
.logos-container { display: flex; align-items: center; gap: 20px; }
.logo-img { height: 50px; filter: brightness(0) invert(1); } /* Logos en blanco sobre fondo verde */

.nav-menu a {
    color: var(--white);
    text-decoration: none;
    margin-left: 25px;
    font-weight: 500;
    font-size: 15px;
    transition: opacity 0.3s;
}
.nav-menu a:hover { opacity: 0.7; }

/* Botón Destacado de Reserva */
.btn-reserve {
    background: var(--tambre-accent);
    color: white !important;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(230, 126, 34, 0.4);
}

/* Hero Section Amigable */
.hero {
    background: linear-gradient(rgba(27, 77, 39, 0.8), rgba(27, 77, 39, 0.8)), url('../images/background-golf.jpg');
    background-size: cover;
    color: white;
    text-align: center;
    padding: 100px 20px;
}
.hero h1 { font-size: 3rem; margin-bottom: 20px; }

/* Sección Proyecto (Basada en Dossier) */
.project-section { padding: 80px 20px; background-color: var(--tambre-light); }
.project-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}
.project-content h2 { color: var(--tambre-green-dark); font-size: 2.5rem; }

/* Footer */
.main-footer {
    background: #1a1a1a;
    color: #999;
    padding: 40px 20px;
    text-align: center;
    font-size: 14px;
}
.footer-links { margin-top: 20px; }
.footer-links a { color: #eee; margin: 0 15px; text-decoration: none; }

/* Estilos para el Drag & Drop */
.sponsor-item {
    transition: transform 0.2s, box-shadow 0.2s;
    user-select: none;
    border: 2px solid transparent;
}

.sponsor-item:active {
    cursor: grabbing;
}

/* Clase que SortableJS aplica al elemento que se está moviendo */
.bg-light {
    opacity: 0.5;
    background-color: var(--tambre-light) !important;
    border: 2px dashed var(--tambre-green) !important;
}

.admin-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}