.textbook-selector[data-v-a50b2adf]{background:linear-gradient(135deg,#0f0c29,#1a1a2e 40%,#16213e 70%,#0f3460);color:#fff;min-height:100vh;overflow-x:hidden;-webkit-user-select:none;-moz-user-select:none;user-select:none}.header[data-v-a50b2adf]{gap:12px;padding:16px 20px}.back-btn[data-v-a50b2adf],.header[data-v-a50b2adf]{align-items:center;display:flex}.back-btn[data-v-a50b2adf]{background:#ffffff1a;border:none;border-radius:12px;color:#fff;cursor:pointer;height:40px;justify-content:center;transition:background .2s;width:40px}.back-btn[data-v-a50b2adf]:hover{background:#fff3}.title[data-v-a50b2adf]{font-size:20px;font-weight:700}.spacer[data-v-a50b2adf]{width:40px}.textbook-list[data-v-a50b2adf]{padding:20px}.section-title[data-v-a50b2adf]{color:#fff9;font-size:16px;font-weight:600;letter-spacing:2px;margin-bottom:20px;text-transform:uppercase}.textbook-cards[data-v-a50b2adf]{display:flex;flex-direction:column;gap:16px}.textbook-card[data-v-a50b2adf]{align-items:center;background:#ffffff14;border:1px solid hsla(0,0%,100%,.1);border-radius:16px;cursor:pointer;display:flex;gap:16px;padding:20px;transition:all .3s}.textbook-card[data-v-a50b2adf]:hover{background:#ffffff24;border-color:var(--accent);transform:translateY(-2px)}.card-icon[data-v-a50b2adf]{align-items:center;background:#ffffff0d;border-radius:12px;display:flex;flex-shrink:0;font-size:48px;height:64px;justify-content:center;width:64px}.card-info[data-v-a50b2adf]{flex:1}.card-info h3[data-v-a50b2adf]{font-size:18px;font-weight:700;margin-bottom:4px}.card-info p[data-v-a50b2adf]{color:#ffffff80;font-size:13px;margin-bottom:8px}.book-count[data-v-a50b2adf]{background:#ffffff1a;border-radius:20px;color:#ffffffb3;font-size:12px;padding:2px 10px}.arrow[data-v-a50b2adf]{color:#ffffff4d}