.book-section{background:var(--color-cream);min-height:100svh;padding:calc(var(--navbar-h) + 2rem) clamp(1.25rem, 5vw, 3rem) 4rem;justify-content:center;align-items:flex-start;display:flex}.book-container{width:100%;max-width:680px}.book-eyebrow{letter-spacing:.22em;text-transform:uppercase;color:var(--color-gold);margin-bottom:.6rem;font-size:.7rem}.book-title{font-family:var(--font-serif);margin-bottom:.6rem;font-size:clamp(2.2rem,6vw,3.5rem);font-weight:900;line-height:1.05}.book-subtitle{color:var(--color-muted);margin-bottom:2.5rem;font-size:.9rem;line-height:1.6}.book-form{flex-direction:column;gap:1.25rem;display:flex}.form-group{flex-direction:column;gap:.4rem;display:flex}.form-group label{letter-spacing:.1em;text-transform:uppercase;color:var(--color-text);font-size:.75rem;font-weight:600}.form-group input,.form-group select,.form-group .phone-wrap select,.form-group .phone-wrap input{font-family:var(--font-sans);color:var(--color-text);background:var(--color-white);width:100%;transition:border-color var(--transition), box-shadow var(--transition);appearance:none;border:1.5px solid #0000001f;border-radius:10px;outline:none;padding:.8rem 1rem;font-size:.95rem}.form-group input:focus,.form-group select:focus,.form-group .phone-wrap select:focus,.form-group .phone-wrap input:focus{border-color:var(--color-gold);box-shadow:0 0 0 3px #c9a96e2e}.form-group input.error,.form-group select.error,.form-group .phone-wrap input.error{border-color:#e74c3c;box-shadow:0 0 0 3px #e74c3c1f}.form-error{color:#e74c3c;margin-top:.2rem;font-size:.75rem;display:none}.form-error.visible{display:block}.phone-wrap{grid-template-columns:130px 1fr;gap:.75rem;display:grid}.phone-wrap select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23888' stroke-width='1.5' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");background-position:right .75rem center;background-repeat:no-repeat;background-size:14px;padding-right:2rem}.date-row{grid-template-columns:1fr 1fr;gap:1rem;display:grid}.form-group select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23888' stroke-width='1.5' d='M4 6l4 4 4-4'/%3E%3C/svg%3E");background-position:right 1rem center;background-repeat:no-repeat;background-size:14px;padding-right:2.5rem}.btn-whatsapp{color:var(--color-white);font-family:var(--font-sans);letter-spacing:.08em;text-transform:uppercase;border-radius:var(--radius-btn);cursor:pointer;transition:background var(--transition), transform var(--transition), box-shadow var(--transition);background:#25d366;border:none;justify-content:center;align-items:center;gap:.6rem;width:100%;margin-top:.5rem;padding:1rem 2rem;font-size:.9rem;font-weight:700;display:flex}.btn-whatsapp:hover{background:#1ebe5d;transform:translateY(-2px);box-shadow:0 8px 24px #25d3664d}.btn-whatsapp svg{width:22px;height:22px;fill:var(--color-white);flex-shrink:0}@media (width<=480px){.date-row,.phone-wrap{grid-template-columns:1fr}}