.proyectos-page{padding:var(--space-m);max-width:1200px;margin:0 auto}.proyectos-header{position:relative;margin-bottom:var(--space-m);min-height:3rem}.btn-volver-proyectos{position:absolute;left:0;top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;gap:.5rem;padding:.4rem .9rem;font-size:.95rem;font-weight:500;color:var(--color-secondary);background:transparent;border:1px solid transparent;border-radius:var(--radius);text-decoration:none;transition:all .3s ease}.btn-volver-proyectos:hover{color:var(--color-primary-hover);background-color:var(--color-surface-alt);border-color:var(--color-primary);transform:translate(-2px,-50%)}.btn-volver-icono{font-size:1rem;transition:transform .3s ease}.btn-volver-proyectos:hover .btn-volver-icono{transform:translateX(-2px)}.proyectos-titulo{margin:0 auto;text-align:center;color:var(--color-primary);font-size:var(--font-size-xl);font-weight:600}.filtros-categorias{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-xs);margin-bottom:var(--space-m)}.filtro-categoria-btn{padding:.5rem 1.25rem;border-radius:17px;font-weight:600;border:1px solid var(--color-secondary);background:var(--color-surface);color:var(--color-text);transition:var(--transition);cursor:pointer}.filtro-categoria-btn:hover{background:var(--color-primary-hover);color:var(--color-bg);border-color:var(--color-primary)}.filtro-categoria-btn.activo{background:var(--color-primary);color:var(--color-bg);border-color:var(--color-primary-hover)}.proyectos-grid{display:grid;grid-template-columns:1fr;gap:var(--space-m)}@media (min-width:640px){.proyectos-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.proyectos-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width:1023px){.proyectos-header{display:flex;flex-direction:column;align-items:center;gap:var(--space-s);padding-top:var(--space-xs);position:static}.btn-volver-proyectos{position:static;transform:none;font-size:.9rem;padding:.5rem 1rem}.proyectos-titulo{font-size:1.7rem}}